MGTX / MeiraGTx Holdings plc - SEC फाइलिंग, वार्षिक रिपोर्ट, प्रॉक्सी स्टेटमेंट

मीराजीटीएक्स होल्डिंग्स पीएलसी
US ˙ NasdaqGS ˙ KYG596651029

मूलभूत आँकड़े
LEI 54930007YV6NYIOGFZ57
CIK 1735438
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to MeiraGTx Holdings plc
SEC Filings (Chronological Order)
यह पृष्ठ SEC फाइलिंग की एक पूरी, कालानुक्रमिक सूची प्रदान करता है, ओनरशिप फाइलिंग को छोड़कर, जो हम अन्यत्र प्रदान करते हैं।
August 14, 2025 EX-99.1

MeiraGTx Reports Second Quarter 2025 Financial and Operational Results - Gained alignment with U.S. Food and Drug Administration (FDA) on the ongoing Phase 2 AQUAx2 randomized double-blind, placebo-controlled pivotal study in Grade 2/3 radiation-indu

Exhibit 99.1 MeiraGTx Reports Second Quarter 2025 Financial and Operational Results - Gained alignment with U.S. Food and Drug Administration (FDA) on the ongoing Phase 2 AQUAx2 randomized double-blind, placebo-controlled pivotal study in Grade 2/3 radiation-induced xerostomia (RIX) to support a potential Biologics License Application (BLA) filing; on track for potential data readout late 2026 - F

August 14, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 14, 2025 MeiraGTx Holdings

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 14, 2025 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or organ

August 14, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 00

June 26, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 26, 2025 MeiraGTx Holdings p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 26, 2025 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or organiz

June 17, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 12, 2025 MeiraGTx Holdings p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 12, 2025 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or organiz

May 13, 2025 EX-10.1

Lease Agreement, dated March 31, 2025, between MeiraGTx, LLC and ARE-East River Science Park, LLC.

Exhibit 10.1 Execution Version Certain information marked as [***] has been excluded from this exhibit because it is both not material and is the type that the registrant treats as private or confidential. LEASE AGREEMENT THIS LEASE AGREEMENT is made as of this 31st day of March, 2025, between ARE-EAST RIVER SCIENCE PARK, LLC, a Delaware limited liability company (“Landlord”), and MEIRAGTX, LLC, a

May 13, 2025 EX-99.1

MeiraGTx Reports First Quarter 2025 Financial and Operational Results -Announced strategic collaboration with Hologen AI, including a $200 million cash upfront payment to MeiraGTx and the formation of a joint venture, Hologen Neuro AI Ltd, with a fur

Exhibit 99.1 MeiraGTx Reports First Quarter 2025 Financial and Operational Results -Announced strategic collaboration with Hologen AI, including a $200 million cash upfront payment to MeiraGTx and the formation of a joint venture, Hologen Neuro AI Ltd, with a further $230 million in capital committed to initially focus on expediting Phase 3 clinical development of AAV-GAD for Parkinson’s disease -

May 13, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 13, 2025 MeiraGTx Holdings pl

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 13, 2025 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or organiza

May 13, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 0

May 9, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 9, 2025 MeiraGTx Holdings plc

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 9, 2025 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or organizat

May 9, 2025 EX-99.1

MeiraGTx Granted FDA Regenerative Medicine Advanced Therapy (RMAT) Designation for AAV-GAD for the Treatment of Parkinson’s Disease -This RMAT designation is based on data from 3 clinical studies demonstrating the potential benefit of AAV-GAD as a on

Exhibit 99.1 MeiraGTx Granted FDA Regenerative Medicine Advanced Therapy (RMAT) Designation for AAV-GAD for the Treatment of Parkinson’s Disease -This RMAT designation is based on data from 3 clinical studies demonstrating the potential benefit of AAV-GAD as a one-time treatment for Parkinson’s disease -RMAT designation includes the benefits of the Fast Track and Breakthrough Therapy designations,

April 30, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14

April 30, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defin

April 4, 2025 8-K

Entry into a Material Definitive Agreement, Termination of a Material Definitive Agreement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 31, 2025 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or organi

March 13, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-38520 MEIRAGT

March 13, 2025 EX-10.24

Collaboration, Option and License Agreement, dated January 30, 2019, by and among Janssen Pharmaceuticals, Inc., MeiraGTx UK II Limited and MeiraGTx Holdings plc.

Exhibit 10.24 EXECUTION VERSION Certain information marked as [***] has been excluded from this exhibit because it is both (i) not material and (ii) is the type that the registrant customarily and actually treats as private or confidential. COLLABORATION, OPTION AND LICENSE AGREEMENT BY AND BETWEEN Janssen Pharmaceuticals, Inc., MEIRAGTX UK II LIMITED AND MEIRAGTX HOLDINGS PLC TABLE OF CONTENTS 1.

March 13, 2025 S-8

As filed with the Securities and Exchange Commission on March 13, 2025

As filed with the Securities and Exchange Commission on March 13, 2025 Registration No.

March 13, 2025 EX-10.51

Framework Agreement, dated March 9, 2025, by and among MeiraGTx Manufacturing Limited, MeiraGTx Limited and Hologen Limited.

Exhibit 10.51 EXECUTION VERSION Certain information marked as [***] has been excluded from this exhibit because it is both not material and is the type that the registrant treats as private or confidential. MEIRAGTX MANUFACTURING LIMITED FRAMEWORK AGREEMENT Dated as of March 9, 2025 TABLE OF CONTENTS Page 1. DEFINITIONS 2 2. FORMATION AND PURPOSE 12 2.1 Formation 12 2.2 Name 12 2.3 Registered Offi

March 13, 2025 EX-19.1

MeiraGTx Holdings plc Insider Trading Compliance Policy.

Exhibit 19.1 MEIRAGTX HOLDINGS PLC INSIDER TRADING COMPLIANCE POLICY This Insider Trading Compliance Policy (this “Policy”) consists of seven sections: · Section I provides an overview; · Section II sets forth the policies of the Company prohibiting insider trading; · Section III consists of procedures that have been put in place by the Company to prevent insider trading; · Section IV explains ins

March 13, 2025 EX-99.2

MeiraGTx Reports Fourth Quarter and Full Year 2024 Financial and Operational Results and Recent Business Updates -Today announced strategic collaboration with Hologen AI, including a $200 million upfront payment to MeiraGTx and the formation of a joi

Exhibit 99.2 MeiraGTx Reports Fourth Quarter and Full Year 2024 Financial and Operational Results and Recent Business Updates -Today announced strategic collaboration with Hologen AI, including a $200 million upfront payment to MeiraGTx and the formation of a joint venture, Hologen Neuro AI Ltd, with a further $230 million in capital committed to initially focus on expediting Phase 3 clinical deve

March 13, 2025 EX-21

List of Subsidiaries

Exhibit 21 SUBSIDIARIES OF MEIRAGTX HOLDINGS PLC Legal Name of Subsidiary Jurisdiction of Organization BRI-Alzan, Inc.

March 13, 2025 EX-10.50

Form of Collaboration and License Agreement by and among Hologen Neuro AI Ltd, Hologen Neuro AI UK Limited, Hologen Limited, MeiraGTx Holdings plc, MeiraGTx UK Neuro Limited and MeiraGTx Neuro I, LLC.

Exhibit 10.50 Certain information marked as [***] has been excluded from this exhibit because it is both not material and is the type that the registrant treats as private or confidential. FORM OF COLLABORATION AND LICENSE AGREEMENT by and among HOLOGEN NEURO AI LTD, HOLOGEN NEURO AI UK LIMITED, HOLOGEN LIMITED, MEIRAGTX HOLDINGS PLC, MEIRAGTX NEURO UK LIMITED and MEIRAGTX NEURO I, LLC , 2025 TABL

March 13, 2025 EX-99.1

MeiraGTx Enters into a Strategic Collaboration with Hologen AI to Expedite Phase 3 Development of AAV-GAD for Parkinson’s Disease and Industrialize MeiraGTx’s Proprietary Manufacturing Process -MeiraGTx to receive $200 million in upfront cash conside

Exhibit 99.1 MeiraGTx Enters into a Strategic Collaboration with Hologen AI to Expedite Phase 3 Development of AAV-GAD for Parkinson’s Disease and Industrialize MeiraGTx’s Proprietary Manufacturing Process -MeiraGTx to receive $200 million in upfront cash consideration -MeiraGTx and Hologen will form a joint venture, Hologen Neuro AI Ltd, with an additional $230 million committed capital from Holo

March 13, 2025 EX-FILING FEES

Filing Fee Table

Exhibit 107 CALCULATION OF FILING FEE TABLE FORM S-8 (Form Type) MEIRAGTX HOLDINGS PLC (Exact Name of Registrant as Specified in its Charter) Table I: Newly Registered Securities Plan Security Type Security Class Title Fee Calculation Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee 2018 Incentive Award Plan Equity Ordinary Shares, nominal value $0.

March 13, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 9, 2025 MeiraGTx Holdings p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 9, 2025 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or organiz

March 13, 2025 EX-10.49

Framework Agreement, dated March 9, 2025, by and among Hologen Limited, Hologen Neuro AI Limited, MeiraGTx Neuro UK Limited and MeiraGTx Holdings plc.

Exhibit 10.49 EXECUTION VERSION Certain information marked as [***] has been excluded from this exhibit because it is both not material and is the type that the registrant treats as private or confidential. HOLOGEN NEURO AI LIMITED FRAMEWORK AGREEMENT Dated as of March 9, 2025 TABLE OF CONTENTS Page 1.DEFINITIONS. 7 2. INCORPORATION MATTERS. 15 2.1 Incorporation 15 2.2 Name 15 2.3 Registered Offic

December 9, 2024 EX-99.1

MeiraGTx Granted FDA Regenerative Medicine Advanced Therapy (RMAT) Designation for AAV2-hAQP1 for the Treatment of Grade 2/3 Radiation-Induced Xerostomia -RMAT designation recognizes the preliminary clinical evidence of the potential benefit of AAV2-

Exhibit 99.1 MeiraGTx Granted FDA Regenerative Medicine Advanced Therapy (RMAT) Designation for AAV2-hAQP1 for the Treatment of Grade 2/3 Radiation-Induced Xerostomia -RMAT designation recognizes the preliminary clinical evidence of the potential benefit of AAV2-hAQP1 as a one-time treatment for this debilitating condition -RMAT designation includes the benefits of the Fast Track and Breakthrough

December 9, 2024 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 9, 2024 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or orga

November 13, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Numbe

November 13, 2024 EX-99.1

MeiraGTx Announces Third Quarter 2024 Financial and Operational Results and Recent Business Updates

Exhibit 99.1 MeiraGTx Announces Third Quarter 2024 Financial and Operational Results and Recent Business Updates - Received 3 Rare Pediatric Disease Designations (RPDD) from FDA for each of 3 potential therapies for 3 different rare inherited retinopathies including AAV-AIPL1 - Agreed on pathway with MHRA for Marketing Authorization Application (MAA) under exceptional circumstances for AAV-AIPL1 f

November 13, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 13, 2024 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or org

November 12, 2024 SC 13G/A

MGTX / MeiraGTx Holdings plc / Adage Capital Management, L.P. Passive Investment

SC 13G/A 1 p24-3042sc13ga.htm SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 4)*, ** MeiraGTx Holdings plc (Name of Issuer) Common Stock, par value $0.00003881 per share (Title of Class of Securities) G59665102 (CUSIP Number) September 30, 2024 (Date of Event Which Requires Filing of This Statement) Check the approp

October 18, 2024 SC 13G/A

MGTX / MeiraGTx Holdings plc / JOHNSON & JOHNSON - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 s13g101524-meiragtx.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b),(c) AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (Amendment No. 2)1 MeiraGTx Holdings plc (Name of Issuer) Ordinary Shares, $.00003881 par value (Title of Class of Securiti

October 15, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 15, 2024 MeiraGTx Holding

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 15, 2024 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or orga

October 15, 2024 EX-99.1

MeiraGTx Announces Positive Data from Randomized, Sham-controlled Clinical Bridging Study of AAV-GAD for the Treatment of Parkinson’s Disease The primary study objective of safety and tolerability was met Significant and clinically meaningful improve

Exhibit 99.1 MeiraGTx Announces Positive Data from Randomized, Sham-controlled Clinical Bridging Study of AAV-GAD for the Treatment of Parkinson’s Disease The primary study objective of safety and tolerability was met Significant and clinically meaningful improvements from baseline demonstrated for key efficacy endpoints at 26 weeks Significant improvement of 18 points in Unified Parkinson’s Disea

August 14, 2024 SC 13D/A

MGTX / MeiraGTx Holdings plc / PERCEPTIVE ADVISORS LLC - SC 13D/A Activist Investment

SC 13D/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 6)* MeiraGTx Holdings plc (Name of Issuer) Ordinary Shares, nominal value $0.00003881 per share (Title of Class of Securities) G59665 102 (CUSIP Number) Alexander Rakitin Perceptive Advisors LLC 51 Astor Place, 10th Floor New York, NY 10003 (646) 205-5340 (Name

August 13, 2024 EX-1.1

Underwriting Agreement, dated August 12, 2024, by and among the Company and BofA Securities, Inc.

Exhibit 1.1 MeiraGTx Holdings plc (a Cayman Islands exempted company) 12,500,000 Ordinary Shares UNDERWRITING AGREEMENT Dated: August 12, 2024 MeiraGTx Holdings plc (a Cayman Islands exempted company) 12,500,000 ordinary shares, nominal value $0.00003881 per share UNDERWRITING AGREEMENT August 12, 2024 BofA Securities, Inc. as Representative of the several Underwriters c/o BofA Securities, Inc. On

August 13, 2024 SC 13G/A

MGTX / MeiraGTx Holdings plc / Sanofi - SC 13G/A Passive Investment

SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* MeiraGTx Holdings plc (Name of Issuer) Ordinary Shares, $0.00003881 par value per share (Title of Class of Securities) G59665 102 (CUSIP Number) August 12, 2024 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to

August 13, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 12, 2024 MeiraGTx Holdings

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 12, 2024 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or organ

August 12, 2024 424B5

12,500,000 Ordinary Shares

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(5)  Registration No. 333-276183 PROSPECTUS SUPPLEMENT (To Prospectus dated December 29, 2023) 12,500,000 Ordinary Shares We are offering 12,500,000 of our ordinary shares, nominal value $0.00003881 per ordinary share. Our ordinary shares are listed on the Nasdaq Global Select Market under the symbol “MGTX.” On August 9, 2024, the last reported sale

August 12, 2024 EX-10.1

Non-Employee Director Compensation Program.

Exhibit 10.1 MEIRAGTX HOLDINGS PLC NON-EMPLOYEE DIRECTOR COMPENSATION PROGRAM (EFFECTIVE AS OF JUNE 6, 2024) Non-employee members of the board of directors (the “Board”) of MeiraGTx Holdings plc (the “Company”) shall receive cash and equity compensation as set forth in this Non-Employee Director Compensation Program (this “Program”). The cash and equity compensation described in this Program shall

August 12, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 00

August 12, 2024 EX-99.1

MeiraGTx Announces $50 Million Offering of Ordinary Shares led by Sanofi and Reports Second Quarter 2024 Financial and Operational Results -Positive data from the Phase 1 AQUAx study in radiation-induced xerostomia (RIX) presented at the American Aca

Exhibit 99.1 MeiraGTx Announces $50 Million Offering of Ordinary Shares led by Sanofi and Reports Second Quarter 2024 Financial and Operational Results -Positive data from the Phase 1 AQUAx study in radiation-induced xerostomia (RIX) presented at the American Academy of Oral Medicine 2024 annual meeting (AAOM) showed meaningful improvements in patient-reported outcomes and saliva production with A

August 12, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 12, 2024 MeiraGTx Holdings

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 12, 2024 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or organ

June 10, 2024 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 6, 2024 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or organiza

May 9, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 0

May 9, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 9, 2024 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or organizat

May 9, 2024 EX-99.1

MeiraGTx Reports First Quarter 2024 Financial and Operational Results -Positive data from the Phase 1 AQUAx study in radiation-induced xerostomia (RIX) presented in an oral session at the American Academy of Oral Medicine 2024 annual meeting (AAOM) A

Exhibit 99.1 MeiraGTx Reports First Quarter 2024 Financial and Operational Results -Positive data from the Phase 1 AQUAx study in radiation-induced xerostomia (RIX) presented in an oral session at the American Academy of Oral Medicine 2024 annual meeting (AAOM) April 17-20, 2024 -Received $50 million milestone following initiation of the extension study for the Phase 3 LUMEOS clinical trial for bo

April 25, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defin

April 25, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14

April 16, 2024 8-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 25, 202

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 25, 2022 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of inc

March 15, 2024 EX-10.47

Asset Purchase Agreement, dated December 20, 2023, by and among Janssen Pharmaceuticals, Inc., MeiraGTx UK II Limited and MeiraGTx Holdings plc.

Exhibit 10.47 Certain information marked as [***] has been excluded from this exhibit because it is both not material and is the type that the registrant treats as private or confidential. ASSET PURCHASE AGREEMENT Dated as of December 20, 2023 by and among JANSSEN PHARMACEUTICALS, INC., MEIRAGTX UK II LIMITED and MEIRAGTX HOLDINGS PLC TABLE OF CONTENTS Page ARTICLE I DEFINITIONS; INTERPRETATION 1

March 15, 2024 EX-10.39

Consent and Amendment to Amended and Restated Notes Purchase Agreement and Guaranty, dated December 20, 2023, by and among MeiraGTx Holdings plc, as issuer, the subsidiary guarantors and noteholders from time to time party thereto, and Perceptive Credit Holdings III, LP, as administrative agent and noteholder.

Exhibit 10.39 CONSENT AND AMENDMENT This CONSENT AND AMENDMENT (this “Agreement”) is made and entered into as of December 20, 2023 by and among MEIRAGTX HOLDINGS PLC an exempted company with limited liability incorporated under the laws of the Cayman Islands with registration number 336306 (the “Issuer”), certain Subsidiaries (as defined in the Notes Purchase Agreement, defined below) of the Issue

March 15, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-38520 MEIRAGT

March 15, 2024 EX-21

List of Subsidiaries

Exhibit 21 SUBSIDIARIES OF MEIRAGTX HOLDINGS PLC Legal Name of Subsidiary Jurisdiction of Organization BRI-Alzan, Inc.

March 15, 2024 EX-97.1

Policy for Recovery of Erroneously Awarded Compensation.

Exhibit 97.1 MEIRAGTX HOLDINGS PLC POLICY FOR RECOVERY OF ERRONEOUSLY AWARDED COMPENSATION MeiraGTx Holdings plc (the “Company”) has adopted this Policy for Recovery of Erroneously Awarded Compensation (the “Policy”), effective as of October 2, 2023 (the “Effective Date”). Capitalized terms used in this Policy but not otherwise defined herein are defined in Section 11. 1. Persons Subject to Policy

March 15, 2024 EX-10.48

Termination Agreement, dated December 20, 2023, by and among Janssen Pharmaceuticals, Inc., MeiraGTx UK II Limited and MeiraGTx Holdings plc.

Exhibit 10.48 Certain information marked as [***] has been excluded from this exhibit because it is both not material and is the type that the registrant treats as private or confidential. TERMINATION AGREEMENT This Termination Agreement (this “Agreement”), dated as of December 20, 2023 (the “Effective Date”), is by and among Janssen Pharmaceuticals, Inc., a Delaware corporation (“Janssen”) on one

March 14, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 14, 2024 MeiraGTx Holdings

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 14, 2024 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or organi

March 14, 2024 EX-99.1

MeiraGTx Reports Fourth Quarter and Full Year 2023 Financial and Operational Results and Recent Business Updates - Company aligned with FDA on requirements for ongoing Phase 2 AQUAx2 clinical trial for Grade 2/3 radiation-induced xerostomia to be con

Exhibit 99.1 MeiraGTx Reports Fourth Quarter and Full Year 2023 Financial and Operational Results and Recent Business Updates - Company aligned with FDA on requirements for ongoing Phase 2 AQUAx2 clinical trial for Grade 2/3 radiation-induced xerostomia to be considered pivotal supporting potential BLA filing - Company to present data from the Phase 1 AQUAx study in an oral presentation at the Ame

February 14, 2024 SC 13D/A

MGTX / MeiraGTx Holdings plc / PERCEPTIVE ADVISORS LLC - SC 13D/A Activist Investment

SC 13D/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 5)* MeiraGTx Holdings plc (Name of Issuer) Ordinary Shares, nominal value $0.00003881 per share (Title of Class of Securities) G59665 102 (CUSIP Number) Alexander Rakitin Perceptive Advisors LLC 51 Astor Place, 10th Floor New York, NY 10003 (646) 205-5340 (Name

February 13, 2024 EX-99.1

MeiraGTx Announces $50 Million Milestone from Janssen Pharmaceuticals -MeiraGTx to receive $50 million milestone after initiation of the extension study for the Phase 3 LUMEOS clinical trial for botaretigene sparoparvovec (bota-vec, formerly AAV-RPGR

Exhibit 99.1 MeiraGTx Announces $50 Million Milestone from Janssen Pharmaceuticals -MeiraGTx to receive $50 million milestone after initiation of the extension study for the Phase 3 LUMEOS clinical trial for botaretigene sparoparvovec (bota-vec, formerly AAV-RPGR) for the treatment of X-linked retinitis pigmentosa (XLRP) LONDON and NEW YORK, February 13, 2024 (GLOBE NEWSWIRE) - MeiraGTx Holdings p

February 13, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 13, 2024 MeiraGTx Holdin

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 13, 2024 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or org

February 13, 2024 SC 13G/A

MGTX / MeiraGTx Holdings plc / Prosight Management, LP - SC 13G/A Passive Investment

SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* MEIRAGTX HOLDINGS PLC (Name of Issuer) Ordinary Shares, $0.00003881 par value per share (Title of Class of Securities) G59665102 (CUSIP Number) December 31, 2023 (Date of Event which Requires Filing of this Statement) Check the appropriate box t

February 7, 2024 SC 13G/A

MGTX / MeiraGTx Holdings plc / ADAGE CAPITAL PARTNERS GP, L.L.C. - MEIRAGTX HOLDINGS PLC Passive Investment

SC 13G/A 1 p24-0383sc13ga.htm MEIRAGTX HOLDINGS PLC SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 3)* MeiraGTx Holdings plc (Name of Issuer) Common Stock, par value $0.00003881 per share (Title of Class of Securities) G59665102 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of This Statement)

December 27, 2023 CORRESP

MeiraGTx Holdings plc 450 East 29th Street, 14th Floor New York, New York 10016

MeiraGTx Holdings plc 450 East 29th Street, 14th Floor New York, New York 10016 December 27, 2023 Via EDGAR Securities and Exchange Commission Division of Corporation Finance Office of Life Sciences 100 F Street, N.

December 21, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 20, 2023 MeiraGTx Holdin

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 20, 2023 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or org

December 21, 2023 EX-99.1

MeiraGTx Announces Asset Purchase Agreement Involving its AAV-RPGR Collaboration for up to $415 million - MeiraGTx enters into an Asset Purchase Agreement related to botaretigene sparoparvovec (bota-vec, formerly AAV-RPGR) for the treatment of X-link

Exhibit 99.1 MeiraGTx Announces Asset Purchase Agreement Involving its AAV-RPGR Collaboration for up to $415 million - MeiraGTx enters into an Asset Purchase Agreement related to botaretigene sparoparvovec (bota-vec, formerly AAV-RPGR) for the treatment of X-linked retinitis pigmentosa (XLRP) for a total of up to $415 million - MeiraGTx to receive $130 million in upfront and near-term milestone pa

December 21, 2023 EX-1.2

Sales Agreement, by and between the MeiraGTx Holdings plc and BofA Securities, Inc., dated December 21, 2023

Exhibit 1.2 MEIRAGTX HOLDINGS PLC Ordinary Shares (nominal value $0.00003881 per share) Sales Agreement December 21, 2023 BofA Securities, Inc. One Bryant Park New York, NY 10036 Ladies and Gentlemen: MeiraGTx Holdings plc, a Cayman Islands exempted company (the “Company”), confirms its agreement (this “Agreement”) with BofA Securities, Inc. (the “Agent”), as follows: 1. Issuance and Sale of Place

December 21, 2023 S-3

As filed with the Securities and Exchange Commission on December 21, 2023

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on December 21, 2023 Registration No.

December 21, 2023 EX-FILING FEES

Filing fee table.

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) MeiraGTx Holdings Plc (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities CALCULATION OF REGISTRATION FEE Security Type Security Class Title Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Unit(1) Maximum Aggregate Offering Price(1)(4) Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid Equity Ordinary shares, nominal value $0.

November 14, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Numbe

November 14, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 14, 2023 MeiraGTx Holdin

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 14, 2023 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or org

November 14, 2023 EX-99.1

MeiraGTx Announces Third Quarter 2023 Financial and Operational Results - Received strategic investment from Sanofi purchasing $30 million of ordinary shares of the Company at a price of $7.50 per share in October 2023 -Announced a right of first neg

Exhibit 99.1 MeiraGTx Announces Third Quarter 2023 Financial and Operational Results - Received strategic investment from Sanofi purchasing $30 million of ordinary shares of the Company at a price of $7.50 per share in October 2023 -Announced a right of first negotiation (ROFN) with Sanofi for the use of MeiraGTx’s Riboswitch gene regulation technology for certain Central Nervous System (CNS) and

November 6, 2023 SC 13G

MGTX / MeiraGTx Holdings plc / Sanofi - SC 13G Passive Investment

SC 13G 1 d866699dsc13g.htm SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 MeiraGTx Holdings plc (Name of Issuer) Ordinary Shares, $0.00003881 par value per share (Title of Class of Securities) G59665 102 (CUSIP Number) October 30, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate

October 30, 2023 EX-10.1

Investment Agreement, dated October 30, 2023, by and among MeiraGTx Holdings plc, Sanofi Foreign Participations B.V. and Sanofi.

Exhibit 10.1 EXECUTION VERSION INVESTMENT AGREEMENT This INVESTMENT AGREEMENT (this “Agreement”) is made and entered into as of October 30, 2023 by and between MeiraGTx Holdings plc, a Cayman Islands exempted company (the “Company”), Sanofi Foreign Participations B.V., a company incorporated in the Netherlands whose registered office is at Paasheuvelweg 25, 1105 BP Amsterdam, Netherlands (the “Inv

October 30, 2023 EX-10.2

Registration Rights Agreement, dated October 30, 2023, by and between MeiraGTx Holdings plc and Sanofi Foreign Participations B.V.

Exhibit 10.2 EXECUTION VERSION REGISTRATION RIGHTS AGREEMENT This REGISTRATION RIGHTS AGREEMENT (this “Agreement”) is made and entered into as of October 30, 2023 by and between MeiraGTx Holdings plc, a Cayman Islands exempted company (the “Company”), and Sanofi Foreign Participations B.V., a company incorporated in the Netherlands whose registered office is at Paasheuvelweg 25, 1105 BP Amsterdam,

October 30, 2023 EX-99.1

MeiraGTx Announces $30 Million Strategic Investment from Sanofi; Company Pursuing Multiple Additional Strategic Opportunities

Exhibit 99.1 MeiraGTx Announces $30 Million Strategic Investment from Sanofi; Company Pursuing Multiple Additional Strategic Opportunities - Sanofi to purchase $30 million of ordinary shares of the Company at a price of $7.50 per share - Sanofi to receive a right of first negotiation (ROFN) for the use of MeiraGTx’s Riboswitch gene regulation technology for certain Immunology and Inflammation (I&I

October 30, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 30, 2023 MeiraGTx Holding

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 30, 2023 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or orga

August 10, 2023 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 10, 2023 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or organ

August 10, 2023 EX-10.1

Consent and Amendment to Amended and Restated Note Purchase Agreement and Guaranty, dated August 10, 2023, by and among MeiraGTx Holdings plc, as issuer, the subsidiary guarantors and noteholders from time to time party thereto, and Perceptive Credit Holdings III, LP, as administrative agent and noteholder.

Exhibit 10.1 Execution Version CONSENT AND AMENDMENT TO AMENDED AND RESTATED NOTE PURCHASE AGREEMENT AND GUARANTY This CONSENT AND AMENDMENT TO AMENDED AND RESTATED NOTE PURCHASE AGREEMENT AND GUARANTY, dated as of August 10, 2023 (this “Agreement”), is by and among MEIRAGTX HOLDINGS PLC, an exempted company with limited liability incorporated under the laws of the Cayman Islands with registration

August 10, 2023 EX-10.4

Non-Employee Director Compensation Program.

Exhibit 10.4 MEIRAGTX HOLDINGS PLC NON-EMPLOYEE DIRECTOR COMPENSATION PROGRAM (EFFECTIVE AS OF JUNE 5, 2023) Non-employee members of the board of directors (the “Board”) of MeiraGTx Holdings plc (the “Company”) shall receive cash and equity compensation as set forth in this Non-Employee Director Compensation Program (this “Program”). The cash and equity compensation described in this Program shall

August 10, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 00

August 10, 2023 EX-10.3

First Amendment to Registration Rights Agreement, dated May 12, 2023, by and among MeiraGTx Holdings plc and Johnson & Johnson Innovation – JJDC, Inc.

Exhibit 10.3 FIRST AMENDMENT TO REGISTRATION RIGHTS AGREEMENT OF MEIRAGTX HOLDINGS PLC THIS FIRST AMENDMENT to the Registration Rights Agreement (this “Amendment”), dated as of May 12, 2023, is entered into by and among MeiraGTx Holdings plc, a Cayman Islands exempted company (the “Company”) and Johnson & Johnson Innovation – JJDC, Inc. (the “Investor” and, together with the Company, the “Parties”

August 10, 2023 EX-99.1

MeiraGTx Reports Second Quarter 2023 Financial and Operational Results

Exhibit 99.1 MeiraGTx Reports Second Quarter 2023 Financial and Operational Results - Phase 3 LUMEOS clinical trial of botaretigene sparoparvovec (bota-vec, formerly AAV-RPGR) for the treatment of X-linked retinitis pigmentosa (XLRP) enrollment target has now been surpassed - Announced positive clinical data from the completed AQUAx Phase 1 study of AAV2-hAQP1 for the treatment of grade 2/3 radiat

August 9, 2023 CORRESP

MeiraGTx Holdings plc 450 East 29th Street, 14th Floor New York, New York 10016

MeiraGTx Holdings plc 450 East 29th Street, 14th Floor New York, New York 10016 August 9, 2023 Via EDGAR Securities and Exchange Commission Division of Corporation Finance Office of Finance 100 F Street, N.

August 9, 2023 CORRESP

MeiraGTx Holdings plc 450 East 29th Street, 14th Floor New York, New York 10016

MeiraGTx Holdings plc 450 East 29th Street, 14th Floor New York, New York 10016 August 9, 2023 Via EDGAR Securities and Exchange Commission Division of Corporation Finance Office of Finance 100 F Street, N.

August 3, 2023 EX-10.2

Registration Rights Agreement, dated May 5, 2023, by and among MeiraGTx Holdings plc and the Investors named therein.

Exhibit 10.2 Execution Version REGISTRATION RIGHTS AGREEMENT This REGISTRATION RIGHTS AGREEMENT (this “Agreement”) is made and entered into as of May 5, 2023 by and among MeiraGTx Holdings plc, a Cayman Islands exempted company (the “Company”), and each investor party to that certain Securities Purchase Agreement (the “Purchase Agreement”), by and among the Company and each such investor (each an

August 3, 2023 EX-FILING FEES

Calculation of Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) MeiraGTx Holdings Plc (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities CALCULATION OF REGISTRATION FEE Security Type Security Class Title Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid Equity Ordinary shares 457(c) 3,742,514 (1)(2) $6.

August 3, 2023 EX-FILING FEES

Calculation of Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) MeiraGTx Holdings Plc (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities CALCULATION OF REGISTRATION FEE Security Type Security Class Title Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid Equity Ordinary shares 457(c) 9,144,801 (1)(2) $6.

August 3, 2023 EX-10.1

Securities Purchase Agreement, dated May 3, 2023, by and among MeiraGTx Holdings plc and the Investors named therein.

Exhibit 10.1 Certain information marked as [***] has been excluded from this exhibit because it is both not material and is the type that the registrant treats as private or confidential. Execution Version SECURITIES PURCHASE AGREEMENT This SECURITIES PURCHASE AGREEMENT (this “Agreement”) is made and entered into as of May 3, 2023 by and among MeiraGTx Holdings plc, a Cayman Islands exempted compa

August 3, 2023 S-3

As filed with the Securities and Exchange Commission on August 3, 2023

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on August 3, 2023 Registration No.

August 3, 2023 S-3

As filed with the Securities and Exchange Commission on August 3, 2023

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on August 3, 2023 Registration No.

June 12, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 8, 2023 MeiraGTx Holdings pl

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 8, 2023 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or organiza

May 16, 2023 SC 13D/A

MGTX / MeiraGTx Holdings plc / PERCEPTIVE ADVISORS LLC - SC 13D/A Activist Investment

SC 13D/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 4)* MeiraGTx Holdings plc (Name of Issuer) Ordinary Shares, nominal value $0.00003881 per share (Title of Class of Securities) G59665 102 (CUSIP Number) Alexander Rakitin Perceptive Advisors LLC 51 Astor Place, 10th Floor New York, NY 10003 (646) 205-5340 (Name

May 15, 2023 EX-99.1

JOINT FILING AGREEMENT May 12, 2023

EX-99.1 Exhibit 99.1 JOINT FILING AGREEMENT May 12, 2023 Pursuant to and in accordance with the Securities Exchange Act of 1934, as amended (the “Act”), and the rules and regulations thereunder, each party hereto hereby agrees to the joint filing, on behalf of each of them, of any filing required by such party under Section 13 or Section 16 of the Act or any rule or regulation thereunder (includin

May 15, 2023 SC 13G

MGTX / MeiraGTx Holdings plc / Prosight Management, LP - SC 13G Passive Investment

SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* MEIRAGTX HOLDINGS PLC (Name of Issuer) Ordinary Shares, $0.00003881 par value per share (Title of Class of Securities) G59665102 (CUSIP Number) May 5, 2023 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designa

May 11, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 11, 2023 MeiraGTx Holdings pl

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 11, 2023 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or organiza

May 11, 2023 EX-99.1

MeiraGTx Reports First Quarter 2023 Financial and Operational Results

Exhibit 99.1 MeiraGTx Reports First Quarter 2023 Financial and Operational Results - Raised approximately $60 million in a private placement in May 2023 with investors consisting of several of the Company’s top shareholders - On track for BLA submission of botaretigene sparoparvovec (bota-vec, formerly AAV-RPGR) for the treatment of X-linked retinitis pigmentosa (XLRP) in 2024 - Company will prese

May 11, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-38520 MeiraGTx

May 9, 2023 8-K

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 3, 2023 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or organizat

April 27, 2023 DEF 14A

Definitive Proxy Statement on Schedule 14A, filed with the SEC on April 27, 2023

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14

April 27, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defin

April 26, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 21, 2023 MeiraGTx Holdings

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 21, 2023 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or organi

April 24, 2023 CORRESP

April 24, 2023

Robert J. Wollin – General Counsel and Secretary [email protected] April 24, 2023 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance Office of Life Sciences 100 F Street, NE Washington, DC 20549 Attn:Vanessa Robertson Kevin Vaughn Re: MeiraGTx Holdings plc Form 10-K for the fiscal year ended December 31, 2022 Filed March 14, 2023 File No. 001-38520 To the ad

March 14, 2023 EX-10.39

Securities Purchase Agreement, dated November 9, 2022, by and among MeiraGTx Holdings plc and Johnson & Johnson Innovation – JJDC, Inc.

Exhibit 10.39 SECURITIES PURCHASE AGREEMENT This SECURITIES PURCHASE AGREEMENT (this “Agreement”) is made and entered into as of November 9, 2022 by and among MeiraGTx Holdings plc, a Cayman Islands exempted company (the “Company”), and Johnson & Johnson Innovation – JJDC, Inc. (the “Investor”). RECITALS A.The Company and the Investor are executing and delivering this Agreement in reliance upon th

March 14, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 14, 2023 MeiraGTx Holdings

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 14, 2023 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or organi

March 14, 2023 EX-10.36

Amendment No. 1 to Credit Agreement and Guaranty, dated December 19, 2022, by and among MeiraGTx Holdings plc, as borrower, certain subsidiary guarantors and lenders party thereto, and Perceptive Credit Holdings III, LP, as administrative agent.

Exhibit 10.36 AMENDMENT NO. 1 TO CREDIT AGREEMENT AND GUARANTY This AMENDMENT NO. 1 TO CREDIT AGREEMENT AND GUARANTY, dated as of December 19, 2022 (this “Amendment”), is by and among MEIRAGTX HOLDINGS PLC, an exempted company with limited liability incorporated under the laws of the Cayman Islands with registration number 336306 (the “Borrower”), certain Subsidiaries of the Borrower party hereto

March 14, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-38520 MEIRAGT

March 14, 2023 EX-10.40

Registration Rights Agreement, dated November 15, 2022, by and among MeiraGTx Holdings plc and Johnson & Johnson Innovation – JJDC, Inc.

Exhibit 10.40 REGISTRATION RIGHTS AGREEMENT This REGISTRATION RIGHTS AGREEMENT (this “Agreement”) is made and entered into as of November 9, 2022 by and among MeiraGTx Holdings plc, a Cayman Islands exempted company (the “Company”), and Johnson & Johnson Innovation – JJDC, Inc. (the “Investor”) in connection with that certain Securities Purchase Agreement by and among the Company and the Investor

March 14, 2023 EX-10.38

Tranche 1 Note, dated December 19, 2022, by and among MeiraGTx Holdings plc, as issuer, the subsidiaries guarantors and noteholders from time to time party thereto, and Perceptive Credit Holdings III, LP, as administrative agent.

Exhibit 10.38 NOTE December 19, 2022 U.S. $75,000,000 FOR VALUE RECEIVED, the undersigned, MeiraGTx Holdings plc, an exempted company incorporated under the laws of the Cayman Islands with registration number 336306 (the “Issuer”), hereby promises to pay to Perceptive Credit Holdings III, LP (the “Noteholder”), in immediately available funds, the aggregate principal sum set forth above, or, if les

March 14, 2023 EX-21

List of Subsidiaries

Exhibit 21 SUBSIDIARIES OF MEIRAGTX HOLDINGS PLC Legal Name of Subsidiary Jurisdiction of Organization BRI-Alzan, Inc.

March 14, 2023 EX-10.37

Amended and Restated Notes Purchase Agreement and Guaranty, dated December 19, 2022, by and among MeiraGTx Holdings plc, as issuer, the subsidiary guarantors and noteholders from time to time party thereto, and Perceptive Credit Holdings III, LP, as administrative agent.

Exhibit 10.37 Certain information marked as [***] has been excluded from this exhibit because it is both not material and is the type that the registrant treats as private or confidential. AMENDED AND RESTATED NOTES PURCHASE AGREEMENT AND GUARANTY dated as of August 2, 2022 as amended and restated as of December 19, 2022 by and among MEIRAGTX HOLDINGS PLC, as the Issuer THE SUBSIDIARY GUARANTORS F

March 14, 2023 EX-99.1

MeiraGTx Reports Fourth Quarter and Full Year 2022 Financial and Operational Results -Announced positive clinical data from AQUAx AAV-hAQP1 Phase 1 trial for treatment of Grade 2/3 Radiation-Induced Xerostomia in December 2022 -Announced positive top

Exhibit 99.1 MeiraGTx Reports Fourth Quarter and Full Year 2022 Financial and Operational Results -Announced positive clinical data from AQUAx AAV-hAQP1 Phase 1 trial for treatment of Grade 2/3 Radiation-Induced Xerostomia in December 2022 -Announced positive top-line data from the MGT009 Phase 1/2 clinical study demonstrating safety and improvement in multiple domains of vision in X-linked retini

March 10, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 10, 2023 MeiraGTx Holdings

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 10, 2023 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or organi

February 14, 2023 EX-99

JOINT FILING AGREEMENT

EX-99 2 ss1758589ex99a.htm JOINT FILING AGREEMENT EXHIBIT A JOINT FILING AGREEMENT The undersigned hereby agree that the Statement on this Schedule 13G dated December 31, 2022 (the “Schedule 13G”), with respect to the Ordinary Shares, per value of $0.00003881 per share, of MeiraGTx Holdings plc is filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) unde

February 14, 2023 SC 13G/A

MGTX / MeiraGTx Holdings PLC / ORBIMED ADVISORS LLC - AMENDMENT NO. 3 Passive Investment

SC 13G/A 1 ss1758589sc13ga.htm AMENDMENT NO. 3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G (Amendment No. 3)* Under the Securities Exchange Act of 1934 MeiraGTx Holdings plc (Name of Issuer) Ordinary Shares, $0.00003881 par value per share (Title of Class of Securities) G59665102 (CUSIP Number) December 31, 2022 (Date of Event Which Requires Filing of this St

February 9, 2023 SC 13G/A

MGTX / MeiraGTx Holdings PLC / ADAGE CAPITAL PARTNERS GP, L.L.C. - MEIRAGTX HOLDINGS PLC Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 2)* MeiraGTx Holdings plc (Name of Issuer) Ordinary Shares, par value $0.00003881 per share (Title of Class of Securities) G59665102 (CUSIP Number) December 31, 2022 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule

January 20, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defin

December 23, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14

November 14, 2022 SC 13G/A

MGTX / MeiraGTx Holdings PLC / JOHNSON & JOHNSON - SC 13G/A Passive Investment

SC 13G/A CUSIP No. G59665102 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b),(c) AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (Amendment No. 1)1 MeiraGTx Holdings plc (Name of Issuer) Ordinary Shares, $.00003881 par value (Title of Class of Securities) G59665102 (CUSIP

November 10, 2022 EX-4.1

Form of Warrant Agreement, dated August 2, 2022, issued by MeiraGTx Holdings plc to certain warrant holders.

Exhibit 4.1 SCHEDULE OF WARRANT HOLDERS In accordance with Instruction 2 to Item 601 of Regulation S-K, below is a schedule setting forth details in which the omitted executed warrants differ from the form of warrant that follows: Holder Exercise Price Per Share Number of Ordinary Shares Perceptive Credit Holdings III, LP $15.00 400,000 Perceptive Credit Holdings III, LP $20.00 300,000 Total 700,0

November 10, 2022 EX-99.1

MeiraGTx Reports Third Quarter 2022 Financial and Operational Results and Receives $25 Million Investment from Johnson & Johnson Innovation - JJDC, Inc. -- Updated Positive Topline Data from the Phase 1/2 Trial of Botaretigene Sparoparvovec (AAV-RPGR

Exhibit 99.1 MeiraGTx Reports Third Quarter 2022 Financial and Operational Results and Receives $25 Million Investment from Johnson & Johnson Innovation - JJDC, Inc. - Updated Positive Topline Data from the Phase 1/2 Trial of Botaretigene Sparoparvovec (AAV-RPGR) for the Treatment of X-linked Retinitis Pigmentosa (XLRP) - Now Dosing Patients in Phase 1 Trial Evaluating AAV-GAD Gene Therapy for Par

November 10, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-38520 Meira

November 10, 2022 EX-10.1

Credit Agreement and Guaranty, dated August 2, 2022, by and among MeiraGTx Holdings plc, as borrower, MeiraGTx UK II Limited and MeiraGTx Ireland DAC, as guarantors, the lenders and other parties from time to time party thereto and Perceptive Credit Holdings III, LP, as administrative agent and lender.

Exhibit 10.1 Certain information marked as [***] has been excluded from this exhibit because it is both not material and is the type that the registrant treats as private or confidential. CREDIT AGREEMENT AND GUARANTY dated as of August 2, 2022 by and among MEIRAGTX HOLDINGS PLC, as the Borrower, THE SUBSIDIARY GUARANTORS FROM TIME TO TIME PARTY HERETO, as the Subsidiary Guarantors, THE LENDERS FR

November 10, 2022 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 9, 2022 MeiraGTx Holding

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 9, 2022 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or orga

August 11, 2022 EX-99.1

MeiraGTx Reports Second Quarter 2022 Financial and Operational Results -- Recent Positive Topline Data from the Phase 1/2 Trial of Botaretigene Sparoparvovec (AAV-RPGR) for the Treatment of X-linked Retinitis Pigmentosa (XLRP) -- Financing Secured by

Exhibit 99.1 ? ? MeiraGTx Reports Second Quarter 2022 Financial and Operational Results ? - Recent Positive Topline Data from the Phase 1/2 Trial of Botaretigene Sparoparvovec (AAV-RPGR) for the Treatment of X-linked Retinitis Pigmentosa (XLRP) ? - Financing Secured by Manufacturing Facilities Extends Cash Runway to Fourth Quarter 2024 ? LONDON and NEW YORK, August 11, 2022 (GLOBE NEWSWIRE) - Meir

August 11, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 11, 2022 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) ? ? ? ? ? ? Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorp

August 11, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-38520 MeiraG

August 4, 2022 EX-99.1

MeiraGTx Announces Financing Agreement with Perceptive Advisors for Up to $100 Million Secured by Manufacturing Facilities - Credit facility is collateralized by MeiraGTx’s wholly-owned manufacturing facilities in London, UK and Shannon, Ireland - $7

Exhibit 99.1 ? MeiraGTx Announces Financing Agreement with Perceptive Advisors for Up to $100 Million Secured by Manufacturing Facilities ? - Credit facility is collateralized by MeiraGTx?s wholly-owned manufacturing facilities in London, UK and Shannon, Ireland - $75 million at closing strengthens balance sheet and extends runway to fourth quarter of 2024 ? LONDON and NEW YORK, August 3, 2022 (GL

August 4, 2022 8-K

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Other Events

? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 2, 2022 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) ? ? ? ? ? ? Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorpo

June 27, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 27, 2022 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) ? ? ? ? ? ? Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorpor

June 9, 2022 8-K

Submission of Matters to a Vote of Security Holders

? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 7, 2022 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) ? ? ? ? ? ? Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorpora

May 12, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-38520 Meira

May 12, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 12, 2022 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) ? ? ? ? ? ? Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorpora

May 12, 2022 EX-99.1

MeiraGTx Reports First Quarter 2022 Financial and Operational Results -Phase 3 Lumeos Clinical Trial of Botaretigene Sparoparvovec (AAV-RPGR) for the Treatment of X-linked Retinitis Pigmentosa (XLRP) Actively Dosing Patients -Phase 1 AQUAx Study of A

Exhibit 99.1 ? MeiraGTx Reports First Quarter 2022 Financial and Operational Results -Phase 3 Lumeos Clinical Trial of Botaretigene Sparoparvovec (AAV-RPGR) for the Treatment of X-linked Retinitis Pigmentosa (XLRP) Actively Dosing Patients -Phase 1 AQUAx Study of AAV-hAQP1 for Radiation-Induced Xerostomia Completed Dosing of Both Unilateral and Bilateral Cohorts in the First Quarter of 2022 LONDON

May 2, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) ? ? ? Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by R

April 27, 2022 EX-99.1

MeiraGTx Appoints Debra Yu, MD to Board of Directors

Exhibit 99.1 ? ? MeiraGTx Appoints Debra Yu, MD to Board of Directors ? LONDON and NEW YORK, April 27, 2022 (GLOBE NEWSWIRE) - MeiraGTx Holdings plc (NASDAQ:MGTX), a vertically integrated, clinical stage gene therapy company, today announced the appointment of Dr. Debra Yu to its Board of Directors. Dr. Yu currently serves as President and Chief Strategy Officer of LianBio, and previously served a

April 27, 2022 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 25, 2022 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) ? ? ? ? ? ? Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorpo

March 10, 2022 EX-10.36

Form of Restricted Share Unit Grant Notice and Restricted Share Unit Agreement for Non-Employee Directors Under the 2018 Incentive Award Plan.

Exhibit 10.36 MEIRAGTX HOLDINGS PLC 2018 INCENTIVE AWARD PLAN RESTRICTED SHARE UNIT GRANT NOTICE Capitalized terms not specifically defined in this Restricted Share Unit Grant Notice (the ?Grant Notice?) have the meanings given to them in the 2018 Incentive Award Plan (as amended from time to time, the ?Plan?) of MeiraGTx Holdings plc (the ?Company?). The Company has granted to the participant lis

March 10, 2022 EX-21

List of Subsidiaries

Exhibit 21 ? SUBSIDIARIES OF MEIRAGTX HOLDINGS PLC ? ? Legal Name of Subsidiary Jurisdiction of Organization BRI-Alzan, Inc.

March 10, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents ? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 10, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 10, 2022 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) ? ? ? ? ? ? Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorpo

March 10, 2022 EX-99.1

MeiraGTx Reports Fourth Quarter and Full Year 2021 Financial and Operational Results - Phase 3 Lumeos Clinical Trial of botaretigene sparoparvovec (AAV-RPGR) for the Treatment of X-linked Retinitis Pigmentosa (XLRP) Enrolling and Dosing Patients - Re

Exhibit 99.1 ? MeiraGTx Reports Fourth Quarter and Full Year 2021 Financial and Operational Results ? - Phase 3 Lumeos Clinical Trial of botaretigene sparoparvovec (AAV-RPGR) for the Treatment of X-linked Retinitis Pigmentosa (XLRP) Enrolling and Dosing Patients - Received $30 Million Cash Milestone Payment from Janssen Pharmaceuticals, Inc. - Positive Preliminary Clinical Data from AQUAx AAV-hAQP

March 10, 2022 EX-10.26

First Amendment to Collaboration, Option and License Agreement, dated December 16, 2021.

Exhibit 10.26 Certain information marked as [***] has been excluded from this exhibit because it is both (i) not material and (ii) is the type that the Company treats as private or confidential. FIRST AMENDMENT TO COLLABORATION, OPTION AND LICENSE AGREEMENT This First Amendment (the ?Amendment?) is entered into by and among Janssen Pharmaceuticals, Inc. (?Janssen?), MeiraGTx UK II Limited and Meir

March 10, 2022 EX-10.35

Deferred Compensation Plan for Non-Employee Directors.

Exhibit 10.35 MEIRAGTX HOLDINGS PLC DEFERRED COMPENSATION PLAN FOR NON-EMPLOYEE DIRECTORS 1.Purpose and Effective Date. The purpose of the Plan is to provide the non-employee members of the Board of Directors (the ?Board?) of MeiraGTx Holdings plc (the ?Company?), with an opportunity to defer payment of all or a portion of their Restricted Share Units. The Plan shall be effective as of December 17

February 11, 2022 SC 13G/A

MGTX / MeiraGTx Holdings PLC / ORBIMED ADVISORS LLC - AMENDMENT NO. 2 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G (Amendment No.

February 11, 2022 EX-99.A

JOINT FILING AGREEMENT

CUSIP No. G59665102 SCHEDULE 13G Page 8 of 8 Pages EXHIBIT A JOINT FILING AGREEMENT The undersigned hereby agree that the Statement on this Schedule 13G dated February 11, 2022 (the ?Schedule 13G?), with respect to the Ordinary Shares, per value of $0.00003881 per share, of MeiraGTx Holdings plc is filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) und

February 11, 2022 SC 13G/A

MGTX / MeiraGTx Holdings PLC / ALEXANDRIA REAL ESTATE EQUITIES, INC. - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Amendment No. 1) Under the Securities Exchange Act of 1934 MeiraGTx Holdings plc (Name of Issuer) Ordinary Shares, $0.00003881 par value per share (Title of Class of Securities) G59665 102 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designa

February 10, 2022 SC 13G/A

MGTX / MeiraGTx Holdings PLC / ADAGE CAPITAL PARTNERS GP, L.L.C. Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 1)* MeiraGTx Holdings plc (Name of Issuer) Ordinary Shares, par value $0.00003881 per share (Title of Class of Securities) G59665102 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule

December 7, 2021 EX-99.1

MeiraGTx Announces Positive Preliminary Data from the AQUAx Phase 1 Clinical Trial of AAV-hAQP1 for the Treatment of Grade 2/3 Radiation-Induced Xerostomia

? ? Exhibit 99.1 MeiraGTx Announces Positive Preliminary Data from the AQUAx Phase 1 Clinical Trial of AAV-hAQP1 for the Treatment of Grade 2/3 Radiation-Induced Xerostomia ? Clinically meaningful improvements in xerostomia symptoms and disease burden reported in two validated Patient Reported Outcome (PRO) measures ? 6 of the 7 participants through 90-day assessments following treatment achieved

December 7, 2021 EX-99.2

CONFIDENTIAL Gene Therapy for the Treatment of Radiation-Induced Xerostomia: AAV-hAQP1 Program Update December 7, 2021 CONFIDENTIAL 2 This presentation contains forward-looking statements within the meaning of the Private Securities Litigation Reform

Exhibit 99.2 CONFIDENTIAL Gene Therapy for the Treatment of Radiation-Induced Xerostomia: AAV-hAQP1 Program Update December 7, 2021 CONFIDENTIAL 2 This presentation contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements contained in this presentation that do not relate to matters of historical fact should be considered forward

December 7, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 7, 2021 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) ? ? ? ? ? ? Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incor

November 10, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-38520 M

November 10, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 10, 2021 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) ? ? ? ? ? ? Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of inco

November 10, 2021 EX-99.1

MeiraGTx Reports Third Quarter 2021 Financial and Operational Results

? ? Exhibit 99.1 MeiraGTx Reports Third Quarter 2021 Financial and Operational Results ? LONDON and NEW YORK, November 10, 2021 (GLOBE NEWSWIRE) - MeiraGTx Holdings plc (Nasdaq: MGTX), a vertically integrated, clinical stage gene therapy company, today announced financial results for the third quarter ended September 30, 2021 and provided an update on recent progress. During the quarter, MeiraGTx

November 4, 2021 SC 13G

MGTX / MeiraGTx Holdings PLC / ADAGE CAPITAL PARTNERS GP, L.L.C. - MEIRAGTX HOLDINGS PLC Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* MeiraGTx Holdings plc (Name of Issuer) Ordinary Shares, par value $0.00003881 per share (Title of Class of Securities) G59665102 (CUSIP Number) October 25, 2021 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule purs

August 11, 2021 EX-10.1

Non-Employee Director Compensation Program.

Exhibit 10.1 ? MeiraGTx Holdings plc ? Non-Employee Director Compensation Program (effective as of June 7, 2021) ? Non-employee members of the board of directors (the ?Board?) of MeiraGTx Holdings plc (the ?Company?) shall receive cash and equity compensation as set forth in this Non-Employee Director Compensation Program (this ?Program?). The cash and equity compensation described in this Program

August 11, 2021 EX-99.1

MeiraGTx Reports Second Quarter 2021 Financial and Operational Results

Exhibit 99.1 ? ? MeiraGTx Reports Second Quarter 2021 Financial and Operational Results ? LONDON and NEW YORK, August 11, 2021 (GLOBE NEWSWIRE) - MeiraGTx Holdings plc (Nasdaq: MGTX), a vertically integrated, clinical stage gene therapy company, today announced financial results for the second quarter ended June 30, 2021 and provided an update on recent progress. ? ?As we move into the second half

August 11, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-38520 MeiraG

August 11, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 11, 2021 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) ? ? ? ? ? ? Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorp

June 17, 2021 S-8

As filed with the Securities and Exchange Commission on June 17, 2021

? ? As filed with the Securities and Exchange Commission on June 17, 2021 Registration No.

June 11, 2021 8-K

Submission of Matters to a Vote of Security Holders

? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 10, 2021 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) ? ? ? ? ? ? Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorpor

May 11, 2021 10-Q

Quarterly Report - 10-Q

? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-38520 Meira

May 11, 2021 EX-99.1

MeiraGTx Reports First Quarter 2021 Financial and Operational Results

Exhibit 99.1 MeiraGTx Reports First Quarter 2021 Financial and Operational Results LONDON and NEW YORK, May 11, 2021 (GLOBE NEWSWIRE) - MeiraGTx Holdings plc (Nasdaq: MGTX), a vertically integrated, clinical stage gene therapy company, today announced financial results for the first quarter ended March 31, 2021 and provided an update on recent progress. ?During the first quarter of 2021, we contin

May 11, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 11, 2021 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) ? ? ? ? ? ? Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorpora

April 28, 2021 DEF 14A

- DEF 14A

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) ? ? ? Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by R

April 28, 2021 DEFA14A

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) ? Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Def

March 11, 2021 EX-99.1

MeiraGTx Reports Fourth Quarter and Full Year 2020 Financial and Operational Results -Preparing to Initiate Phase 3 Lumeos Clinical Trial in AAV-RPGR -Announced Positive Preliminary Clinical Data from AQUAx AAV-hAQP1 Phase 1 Trial for Treatment of Gr

Exhibit 99.1 MeiraGTx Reports Fourth Quarter and Full Year 2020 Financial and Operational Results -Preparing to Initiate Phase 3 Lumeos Clinical Trial in AAV-RPGR -Announced Positive Preliminary Clinical Data from AQUAx AAV-hAQP1 Phase 1 Trial for Treatment of Grade 2/3 Xerostomia -Completed Build of Internal cGMP Plasmid and DNA Manufacturing Facility -Strengthened Balance Sheet and Extended Cash

March 11, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 11, 2021 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) ? ? ? ? ? ? Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorpo

March 11, 2021 EX-21

List of Subsidiaries

Exhibit 21 ? SUBSIDIARIES OF MEIRAGTX HOLDINGS PLC ? ? Legal Name of Subsidiary Jurisdiction of Organization BRI-Alzan, Inc.

March 11, 2021 EX-10.14

Form of Change in Control Agreement

? Exhibit 10.14 CHANGE IN CONTROL AGREEMENT This Change in Control Agreement (?Agreement?) is made effective as of [], by and between [EMPLOYING SUBSIDIARY] (the ?Company?) and [] (?Executive?). WHEREAS, Executive is a key employee of the Company; WHEREAS, the Company recognizes that the possibility of a change in control and a related involuntary termination raises uncertainty and questions among

March 11, 2021 10-K

Annual Report - 10-K

Table of Contents ? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 11, 2021 EX-10.3

Non-Employee Director Compensation Program.

Exhibit 10.3 ? MEIRAGTX HOLDINGS PLC ? NON-EMPLOYEE DIRECTOR COMPENSATION PROGRAM ? Non-employee members of the board of directors (the ?Board?) of MeiraGTx Holdings plc (the ?Company?) shall receive cash and equity compensation as set forth in this Non-Employee Director Compensation Program (this ?Program?). The cash and equity compensation described in this Program shall be paid or be made, as a

February 12, 2021 SC 13G/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) (Amendment No. 2)*

 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102)  (Amendment No. 2)*     MeiraGTx Holdings plc  (Name of Issuer) Ordinary Shares, par value $0.00003881 nominal value per share  (Title of Class of Securities) G59665 102  (CUSIP Number) December 31, 2020  (Date of Event which Requires Filing of this Statement)  Check the appropriate box

February 12, 2021 EX-99.A

JOINT FILING AGREEMENT

CUSIP No. G59665102 SCHEDULE 13G Page 8 of 8 Pages EXHIBIT A JOINT FILING AGREEMENT The undersigned hereby agree that the Statement on this Schedule 13G dated February 12, 2021 (the “Schedule 13G”), with respect to the Ordinary Shares, per value of $0.00003881 per share, of MeiraGTx Holdings plc is filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) und

February 12, 2021 SC 13G/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.

December 17, 2020 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Other Events - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 16, 2020 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or org

December 17, 2020 EX-99.1

MeiraGTx To Present Clinical Program Update for AAV-hAQP1 Treatment of Radiation-Induced Xerostomia -- Webcast and conference call to take place on December 17, 2020 at 8:00 a.m. ET --

EXHIBIT 99.1 MeiraGTx To Present Clinical Program Update for AAV-hAQP1 Treatment of Radiation-Induced Xerostomia - Webcast and conference call to take place on December 17, 2020 at 8:00 a.m. ET - LONDON and NEW YORK, Dec. 16, 2020 (GLOBE NEWSWIRE) - MeiraGTx Holdings plc (Nasdaq: MGTX), a vertically integrated, clinical stage gene therapy company, today announced the Company will host a webcast an

November 24, 2020 SC 13D/A

MGTX / MeiraGTx Holdings plc / PERCEPTIVE ADVISORS LLC - AMENDMENT NO. 3 TO SCHEDULE 13D Activist Investment

Amendment No. 3 to Schedule 13D SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 3)* MeiraGTx Holdings plc (Name of Issuer) Ordinary Shares, nominal value $0.00003881 per share (Title of Class of Securities) G59665 102 (CUSIP Number) Alexander Rakitin Perceptive Advisors LLC 51 Astor Place, 10th Floor New York, NY 100

November 23, 2020 8-K

Financial Statements and Exhibits, Other Events - FORM 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 19, 2020 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or org

November 23, 2020 EX-1.1

Underwriting Agreement, dated November 19, 2020, by and among the Company and BofA Securities, Inc., Piper Sandler & Co., Evercore Group L.L.C. and Barclays Capital Inc., as representatives of the underwriters named therein

Exhibit 1.1 EXECUTION VERSION MeiraGTx Holdings plc (a Cayman Islands exempted company) 5,000,000 Ordinary Shares UNDERWRITING AGREEMENT Dated: November 19, 2020 MeiraGTx Holdings plc (a Cayman Islands exempted company) 5,000,000 ordinary shares, nominal value $0.00003881 per share UNDERWRITING AGREEMENT November 19, 2020 BofA Securities, Inc. Piper Sandler & Co. Evercore Group L.L.C. Barclays Cap

November 19, 2020 424B5

5,000,000 Ordinary Shares

TABLE OF CONTENTS ?Registration No. 333-232677 ?Filed Pursuant to Rule 424(b)(5)? PROSPECTUS SUPPLEMENT (To Prospectus dated July 19, 2019) 5,000,000 Ordinary Shares ? We are offering 5,000,000 of our ordinary shares, nominal value $0.00003881 per ordinary share. Our ordinary shares are listed on the Nasdaq Global Select Market under the symbol ?MGTX.? On November 18, 2020, the last reported sale

November 18, 2020 8-K

Termination of a Material Definitive Agreement - FORM 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 18, 2020 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or org

November 18, 2020 424B5

SUBJECT TO COMPLETION, DATED NOVEMBER 18, 2020

TABLE OF CONTENTS The information in this preliminary prospectus supplement and the accompanying base prospectus, relating to an effective registration statement under the Securities Act of 1933, as amended, is not complete and may be changed.

November 16, 2020 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Other Events - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 13, 2020 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or org

November 16, 2020 EX-99.1

MeiraGTx Announces Investigational Gene Therapy Continues to Demonstrate Statistically Significant Improvement in Vision in Patients with X-Linked Retinitis Pigmentosa One Year After Treatment ·Data presented at AAO 2020 Virtual Annual Meeting show s

Exhibit 99.1 MeiraGTx Announces Investigational Gene Therapy Continues to Demonstrate Statistically Significant Improvement in Vision in Patients with X-Linked Retinitis Pigmentosa One Year After Treatment ·Data presented at AAO 2020 Virtual Annual Meeting show sustained improvements in retinal sensitivity at 12 months LONDON and NEW YORK, November 13, 2020 (GLOBE NEWSWIRE) - MeiraGTx Holdings plc

November 5, 2020 EX-99.1

MeiraGTx Reports Third Quarter 2020 Financial Results - MeiraGTx preparing to initiate Phase 3 trial of AAV-RPGR - Plasmid production facility expected to be completed year-end 2020

Exhibit 99.1 MeiraGTx Reports Third Quarter 2020 Financial Results - MeiraGTx preparing to initiate Phase 3 trial of AAV-RPGR - Plasmid production facility expected to be completed year-end 2020 LONDON and NEW YORK, November 5, 2020 - MeiraGTx Holdings plc (Nasdaq: MGTX), a vertically integrated, clinical stage gene therapy company, today announced financial results for the third quarter ended Sep

November 5, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 5, 2020 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 98-1448305 (State or other jurisdiction of incorporation or orga

November 5, 2020 EX-10.2

Particulars and Conditions of Sale of Building 3, Block K, Shannon Free Zone, Shannon, County Clare, Ireland, dated as of August 4, 2020, by and between Shannon Commercial Enterprises DAC trading as Shannon Commercial Properties and MeiraGTx Ireland DAC, including agreed form of Lease between Shannon Commercial Enterprises DAC and MeiraGTx Ireland DAC.

Exhibit 10.2 WARNING: IT IS RECOMMENDED THAT THE WITHIN SHOULD NOT BE COMPLETED WITHOUT PRIOR LEGAL ADVICE Law Society of Ireland GENERAL CONDITIONS OF SALE 2019 EDITION PARTICULARS and CONDITIONS OF SALE of Building 3, Block K, Shannon Free Zone, Shannon, County Clare Vendor: Shannon Commercial Enterprises DAC trading as Shannon Commercial Properties Vendor’s Solicitor: HOLMES O’MALLEY SEXTON SOL

November 5, 2020 EX-10.1

Particulars and Conditions of Sale of Building 2, Block K, Shannon Free Zone, Shannon, County Clare, Ireland, dated as of August 4, 2020, by and between Shannon Commercial Enterprises DAC trading as Shannon Commercial Properties and MeiraGTx Ireland DAC, including agreed form of Lease between Shannon Commercial Enterprises DAC and MeiraGTx Ireland DAC.

Exhibit 10.1 WARNING: IT IS RECOMMENDED THAT THE WITHIN SHOULD NOT BE COMPLETED WITHOUT PRIOR LEGAL ADVICE Law Society of Ireland GENERAL CONDITIONS OF SALE 2019 EDITION PARTICULARS and CONDITIONS OF SALE of Building 2, Block K, Shannon Free Zone, Shannon, County Clare Vendor: Shannon Commercial Enterprises DAC trading as Shannon Commercial Properties Vendor’s Solicitor: HOLMES O’MALLEY SEXTON SOL

November 5, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-38520 Meira

October 6, 2020 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Other Events - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 3, 2020 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 Not applicable (State or other jurisdiction of incorporation or o

October 6, 2020 EX-99.1

MeiraGTx Announces Nine-Month Data from Phase 1/2 Trial of AAV-RPGR Demonstrating Significant and Sustained Vision Improvement in X-Linked Retinitis Pigmentosa (XLRP)

Exhibit 99.1 MeiraGTx Announces Nine-Month Data from Phase 1/2 Trial of AAV-RPGR Demonstrating Significant and Sustained Vision Improvement in X-Linked Retinitis Pigmentosa (XLRP) · Data presented at EURETINA 2020 Virtual Congress show sustained improvements in retinal sensitivity at nine months · Significant improvements were also demonstrated in the time taken to walk through a vision-guided mob

August 6, 2020 EX-99.1

MeiraGTx Reports Second Quarter 2020 Financial Results - Positive initial data from Phase 1/2 clinical trial of AAV-RPGR for the treatment of XLRP recently presented - AAV-RPGR to advance into Phase 3 Lumeos clinical trial - Expands manufacturing cap

Exhibit 99.1 MeiraGTx Reports Second Quarter 2020 Financial Results - Positive initial data from Phase 1/2 clinical trial of AAV-RPGR for the treatment of XLRP recently presented - AAV-RPGR to advance into Phase 3 Lumeos clinical trial - Expands manufacturing capabilities with new facilities in Ireland LONDON and NEW YORK, August 6, 2020 (GLOBE NEWSWIRE) - MeiraGTx Holdings plc (Nasdaq: MGTX), a v

August 6, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-38520 MeiraGTx H

August 6, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 6, 2020 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 Not applicable (State or other jurisdiction of incorporation or or

July 17, 2020 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 17, 2020 MeiraGTx Holdings plc (Exact name .of registrant as specified in its charter) Cayman Islands 001-38520 Not applicable (State or other jurisdiction of incorporation or or

July 17, 2020 EX-99.1

MeiraGTx Announces Positive Clinical Data Demonstrating Treatment with AAV-RPGR Investigational Gene Therapy Improves Vision in X-Linked Retinitis Pigmentosa Patients · Data being presented at the American Society of Retina Specialists (ASRS) 2020 Vi

Exhibit 99.1 MeiraGTx Announces Positive Clinical Data Demonstrating Treatment with AAV-RPGR Investigational Gene Therapy Improves Vision in X-Linked Retinitis Pigmentosa Patients · Data being presented at the American Society of Retina Specialists (ASRS) 2020 Virtual Annual Meeting · Significant improvements demonstrated after treatment in Phase 1/2 clinical trial · Based on encouraging safety an

June 8, 2020 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8‑K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 2, 2020 MeiraGTx Holdings plc (Exact name .of registrant as specified in its charter) Cayman Islands 001‑38520 Not applicable (State or other jurisdiction of incorporation or org

May 26, 2020 DEFA14A

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)

May 7, 2020 EX-10.1

Separation and Release Agreement, dated January 7, 2020, between MeiraGTx Holdings plc and Bruce Gottlieb.

Exhibit 10.1 SEPARATION AND RELEASE AGREEMENT I, Bruce Gottlieb, by my signature below resign from my employment and any and all other offices or directorships with MeiraGTx, LLC and any of its affiliates (“Meira” or the “Company”) without Good Reason as defined in my employment agreement dated March 25, 2019 (“Employment Agreement”), effective immediately, and understand that a severance package

May 7, 2020 EX-99.1

MeiraGTx Reports First Quarter 2020 Financial Results

Exhibit 99.1 MeiraGTx Reports First Quarter 2020 Financial Results LONDON and NEW YORK, May 7, 2020 (GLOBE NEWSWIRE) - MeiraGTx Holdings plc (Nasdaq: MGTX), a vertically integrated, clinical stage gene therapy company, today announced financial results for the first quarter ended March 31, 2020 and provided an update on recent progress. During the first quarter of 2020, MeiraGTx remained focused o

May 7, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 7, 2020 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001‑38520 Not applicable (State or other jurisdiction of incorporation or organ

May 7, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2020 OR ☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001‑38520 MeiraGTx Ho

April 21, 2020 DEFA14A

MGTX / MeiraGTx Holdings plc DEFA14A - - DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) o Defin

April 21, 2020 DEF 14A

Definitive Proxy Statement on Schedule 14A, filed with the SEC on April 21, 2020.

Use these links to rapidly review the document TABLE OF CONTENTS Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 11, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 11, 2020 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001‑38520 Not applicable (State or other jurisdiction of incorporation or or

March 11, 2020 EX-10.31

Form of Restricted Share Unit Grant Notice and Restricted Share Unit Agreement Under the UK Sub-Plan to the 2018 Incentive Award Plan.

Exhibit 10.31 MEIRAGTX HOLDINGS PLC 2018 INCENTIVE AWARD PLAN UK SUB-PLAN RESTRICTED SHARE UNIT GRANT NOTICE FOR UK PARTICIPANTS Capitalized terms not specifically defined in this Restricted Share Unit Grant Notice for UK Participants (the “Grant Notice”) have the meanings given to them in the 2018 Incentive Award Plan UK Sub-Plan (the “UK Sub-Plan”) of MeiraGTx Holdings plc (the “Company”), which

March 11, 2020 EX-21

List of Subsidiaries

Exhibit 21 SUBSIDIARIES OF MEIRAGTX HOLDINGS PLC Legal Name of Subsidiary Jurisdiction of Organization BRI-Alzan, Inc. Delaware MeiraGTx B.V. Netherlands Arthrogen B.V. Netherlands MeiraGTx Limited England and Wales MeiraGTx, LLC Delaware MeiraGTx UK Limited England and Wales MeiraGTx UK II Limited England and Wales MeiraGTx Neurosciences, Inc. Delaware

March 11, 2020 EX-99.1

MeiraGTx Reports Full Year 2019 Financial Results

Exhibit 99.1 MeiraGTx Reports Full Year 2019 Financial Results LONDON and NEW YORK, March 11, 2020 (GLOBE NEWSWIRE) - MeiraGTx Holdings plc (Nasdaq: MGTX), a vertically integrated, clinical stage gene therapy company, today announced financial results for the full year ended December 31, 2019 and provided an update on recent progress. “During 2019, the MeiraGTx team reached meaningful milestones,

March 11, 2020 EX-10.3

Non-Employee Director Compensation Program.

Exhibit 10.3 MEIRAGTX HOLDINGS PLC NON-EMPLOYEE DIRECTOR COMPENSATION PROGRAM Non-employee members of the board of directors (the “Board”) of MeiraGTx Holdings plc (the “Company”) shall receive cash and equity compensation as set forth in this Non-Employee Director Compensation Program (this “Program”). The cash and equity compensation described in this Program shall be paid or be made, as applica

March 11, 2020 10-K

MGTX / MeiraGTx Holdings plc 10-K - Annual Report - 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 OR ☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001‑38520 MEIRAGTX

March 11, 2020 EX-10.30

Form of Restricted Share Unit Grant Notice and Restricted Share Unit Agreement Under the 2018 Incentive Award Plan.

Exhibit 10.30 MEIRAGTX HOLDINGS PLC 2018 INCENTIVE AWARD PLAN RESTRICTED SHARE UNIT GRANT NOTICE Capitalized terms not specifically defined in this Restricted Share Unit Grant Notice (the “Grant Notice”) have the meanings given to them in the 2018 Incentive Award Plan (as amended from time to time, the “Plan”) of MeiraGTx Holdings plc (the “Company”). The Company has granted to the participant lis

March 11, 2020 EX-4.2

Shareholder Agreement

Exhibit 4.2 SHAREHOLDER AGREEMENT OF MEIRAGTX HOLDINGS PLC DATED AS OF 7 JUNE 2018 Table of Contents SECTION 1. DEFINITIONS 1 SECTION 2. FORMATION, PURPOSE, TERM 3 2.1 NAME 3 2.2 PURPOSES 3 2.3 POWERS 4 2.4 REGISTERED OFFICE 4 2.5 ORGANIZATION EXPENSES 4 2.6 REGISTER OF MEMBERS; TRANSFER 4 2.7 PROPOSED IPO 4 SECTION 3. MEMBERS; SHARE RIGHTS 5 3.2 RESERVED MATTERS. THE FOLLOWING MATTERS SHALL REQUI

March 11, 2020 EX-4.3

Description of Securities

Exhibit 4.3 DESCRIPTION OF SECURITIES The following summary of MeiraGTx Holdings plc’s (the “Company”) ordinary shares is based on and qualified by the Company’s amended and restated memorandum and articles of association. In this “Description of Securities” discussion, we use the terms “we,” “us” and “our” to refer to the Company. General We were incorporated pursuant to the laws of the Cayman Is

March 2, 2020 SC 13G

MGTX / MeiraGTx Holdings plc / ADENA ESTATE INC. - SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* MeiraGTx Holdings plc (Name of Issuer) Ordinary shares, nominal value $0.00003881 per share (Title of Class of Securities) G59665 102 (CUSIP Number) June 8th 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designa

February 14, 2020 SC 13G

MGTX / MeiraGTx Holdings plc / ORBIMED ADVISORS LLC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.

February 14, 2020 SC 13G/A

MGTX / MeiraGTx Holdings plc / Kadmon Holdings, Inc. - KDMN SC 13GA Passive Investment

 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102)  (Amendment No. 1)*     MeiraGTx Holdings plc  (Name of Issuer) Ordinary Shares, par value $0.00003881 nominal value per share  (Title of Class of Securities) G59665 102  (CUSIP Number) December 31, 2019  (Date of Event which Requires Filing of this Statement)  Check the appropriate box

February 14, 2020 SC 13G

MGTX / MeiraGTx Holdings plc / ALEXANDRIA REAL ESTATE EQUITIES INC - SC 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 MeiraGTx Holdings plc (Name of Issuer) Ordinary Shares, $0.00003881 par value per share (Title of Class of Securities) G59665 102 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursua

December 31, 2019 8-K/A

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

8-K/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 19, 2019 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 Not applicable (State or other jurisd

November 7, 2019 10-Q

MGTX / MeiraGTx Holdings plc 10-Q - Quarterly Report - 10-Q

10-Q Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

November 7, 2019 EX-99.1

MeiraGTx Reports Third Quarter 2019 Financial Results

EX-99.1 Exhibit 99.1 MeiraGTx Reports Third Quarter 2019 Financial Results LONDON and NEW YORK, November 7, 2019 (GLOBE NEWSWIRE) — MeiraGTx Holdings plc (Nasdaq: MGTX), a vertically integrated, clinical stage gene therapy company, today announced financial results for the quarter ended September 30, 2019 and provided an update on recent progress. “Over the course of the third quarter, we continue

November 7, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 7, 2019 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 Not applicable (State or other jurisdiction of incorporation

August 20, 2019 SC 13D/A

MGTX / MeiraGTx Holdings plc / PERCEPTIVE ADVISORS LLC - AMENDMENT NO. 2 TO SCHEDULE 13D Activist Investment

Amendment No. 2 to Schedule 13D SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 2)* MeiraGTx Holdings plc (Name of Issuer) Ordinary Shares, nominal value $0.00003881 per share (Title of Class of Securities) G59665 102 (CUSIP Number) Alexander Rakitin Perceptive Advisors LLC 51 Astor Place, 10th Floor New York, NY 100

August 9, 2019 8-K

Financial Statements and Exhibits, Other Events

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 7, 2019 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 Not applicable (State or other jurisdiction of incorporation o

August 9, 2019 EX-1.1

Underwriting Agreement, dated August 7, 2019, by and among the Company and BofA Securities, Inc. and Piper Jaffray & Co., as representatives of the underwriters named therein

EX-1.1 Exhibit 1.1 EXECUTION VERSION MeiraGTx Holdings plc (a Cayman Islands exempted company) 3,200,000 Ordinary Shares UNDERWRITING AGREEMENT Dated: August 7, 2019 MeiraGTx Holdings plc (a Cayman Islands exempted company) 3,200,000 ordinary shares, nominal value $0.00003881 per share UNDERWRITING AGREEMENT BofA Securities, Inc. August 7, 2019 Piper Jaffray & Co. as Representatives of the several

August 9, 2019 424B5

3,200,000 Ordinary Shares Ordinary Shares

424B5 Table of Contents Registration No. 333-232677 Filed Pursuant to Rule 424(b)(5) PROSPECTUS SUPPLEMENT (To Prospectus dated July 19, 2019) 3,200,000 Ordinary Shares Ordinary Shares We are offering 3,200,000 ordinary shares at a public offering price of $23.50 per ordinary share. Our ordinary shares are listed on the Nasdaq Global Select Market under the symbol “MGTX.” On August 7, 2019, the la

August 7, 2019 424B5

Subject to Completion Preliminary Prospectus Dated August 7, 2019.

424B5 Table of Contents Registration No. 333-232677 Filed Pursuant to Rule 424(b)(5) The information in this preliminary prospectus supplement and the accompanying base prospectus, relating to an effective registration statement under the Securities Act of 1933, as amended, is not complete and may be changed. A registration statement relating to these securities has been declared effective by the

August 7, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 7, 2019 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 Not applicable (State or other jurisdiction of incorporation o

August 7, 2019 EX-99.1

MeiraGTx Reports Second Quarter 2019 Financial Results and Provides Corporate Update

EX-99.1 Exhibit 99.1 MeiraGTx Reports Second Quarter 2019 Financial Results and Provides Corporate Update LONDON and NEW YORK, August 7, 2019 (GLOBE NEWSWIRE) — MeiraGTx Holdings plc (Nasdaq: MGTX), a vertically integrated, clinical stage gene therapy company, today announced financial results for the quarter ended June 30, 2019 and provided an update on recent clinical progress. MeiraGTx today an

August 7, 2019 EX-10.2

License and Sub-Lease Agreement, dated May 31, 2019, between MeiraGTx LLC and Imclone Systems, LLC.

EX-10.2 Exhibit 10.2 AGREEMENT OF SUBLEASE IMCLONE SYSTEMS, LLC, as Sublandlord and MEIRAGTX, LLC, as Subtenant PREMISES AT 450 East 29th Street NEW YORK, NEW YORK Entire 14th Floor May 31, 2019 TABLE OF CONTENTS Paragraph Page 1. Term 1 2. Fixed Rent 2 3. Use of the Sublease Premises 3 4. Incorporation of Overlease Terms, No Violoation of Overlease 3 5. Sublease Subject to Overlease 4 6. Inapplic

August 7, 2019 EX-3.2

Amended and Restated Articles of Association of MeiraGTx, LLC, Redlined to Show Amendments Effective June 19, 2019

EX-3.2 Exhibit 3.2 ANNEX A AMENDED AND RESTATED MEMORANDUM AND ARTICLES OF ASSOCIATION THE COMPANIES LAW (AS AMENDED) COMPANY LIMITED BY SHARES AMENDED AND RESTATED MEMORANDUM OF ASSOCIATION OF MEIRAGTX HOLDINGS PLC (ADOPTED BY SPECIAL RESOLUTION DATED 8 JUNE 2018 2019) REF: CM/SP/M6113-151627 THE COMPANIES LAW (AS AMENDED) COMPANY LIMITED BY SHARES AMENDED AND RESTATED MEMORANDUM OF ASSOCIATION O

August 7, 2019 10-Q

MGTX / MeiraGTx Holdings plc 10-Q - Quarterly Report - 10-Q

10-Q Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

August 7, 2019 EX-10.3

Agreement for Lease with Landlord’s Refurbishment Works, dated May 29, 2019, between MeiraGTx UK II Limited and Provost 1 Limited and Provost 2 Limited, including agreed form of Lease between MeiraGTx UK II Limited and Provost 1 Limited and Provost 2 Limited.

EX-10.3 Exhibit 10.3 Dated 29th May 2019 Agreement for Lease with Landlord’s Refurbishment Works relating to 34-38 Provost Street London N1 7NG (1) Provost 1 Limited and Provost 2 Limited (2) Meiragtx UK II Limited Harbottle & Lewis LLP T + 44 (0)20 7667 5000 Hanover House F + 44 (0)20 7667 5100 14 Hanover Square www.harbottle.com London DX 44617 Mayfair W1S 1HP Ref: 145/319442/3 CONTENTS CLAUSE 1

August 7, 2019 EX-3.1

Amended and Restated Memorandum and Articles of Association of the Registrant.

EX-3.1 Exhibit 3.1 ANNEX A AMENDED AND RESTATED MEMORANDUM AND ARTICLES OF ASSOCIATION THE COMPANIES LAW (AS AMENDED) COMPANY LIMITED BY SHARES AMENDED AND RESTATED MEMORANDUM OF ASSOCIATION OF MEIRAGTX HOLDINGS PLC (ADOPTED BY SPECIAL RESOLUTION DATED 2019) REF: CM/SP/M6113-151627 THE COMPANIES LAW (AS AMENDED) COMPANY LIMITED BY SHARES AMENDED AND RESTATED MEMORANDUM OF ASSOCIATION OF MEIRAGTX H

July 18, 2019 CORRESP

MGTX / MeiraGTx Holdings plc CORRESP - -

CORRESP MEIRAGTX HOLDINGS 430 EAST 29TH STREET, 10TH FLOOR NEW YORK, NY 10016 July 18, 2019 VIA EDGAR TRANSMISSION Securities and Exchange Commission Division of Corporation Finance Mail Stop 4720 100 F Street, N.

July 16, 2019 S-3

Definitive Proxy Statement

S-3 Table of Contents As filed with the Securities and Exchange Commission on July 16, 2019 Registration No.

July 16, 2019 EX-1.2

Sales Agreement, dated as of July 16, 2019, by and between MeiraGTx Holdings plc and Chardan Capital Markets, LLC

EX-1.2 Exhibit 1.2 MEIRAGTX HOLDINGS PLC Ordinary Shares (nominal value $0.00003881 per share) Sales Agreement July 16, 2019 Chardan Capital Markets, LLC 17 State Street, Suite 1600 New York, New York 10004 Ladies and Gentlemen: MeiraGTx Holdings plc, a Cayman Islands exempted company (the “Company”), confirms its agreement (this “Agreement”) with Chardan Capital Markets, LLC (the “Agent”), as fol

July 12, 2019 CORRESP

MGTX / MeiraGTx Holdings plc CORRESP - -

CORRESP MEIRAGTX HOLDINGS 430 EAST 29TH STREET, 10TH FLOOR NEW YORK, NY 10016 July 12, 2019 VIA EDGAR TRANSMISSION Securities and Exchange Commission Division of Corporation Finance Mail Stop 4720 100 F Street, N.

July 2, 2019 S-3

MGTX / MeiraGTx Holdings plc S-3 - - S-3

S-3 Table of Contents As filed with the Securities and Exchange Commission on July 2, 2019 Registration No.

June 20, 2019 8-K

Submission of Matters to a Vote of Security Holders

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) June 19, 2019 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 Not applicable (State or other jurisdiction of incorporation) (C

June 4, 2019 EX-10.1

Separation and Release Agreement, dated June 3, 2019, between MeiraGTx Holdings plc and Katherine Breedis.

EX-10.1 Exhibit 10.1 SEPARATION AND RELEASE AGREEMENT I, Katherine Breedis, understand that my employment with MeiraGTx, LLC (“Meira” or the “Company”) has been terminated, as mutually agreed, effective April 16, 2019 and that a severance package is being made available to me in exchange for signing this Separation and Release Agreement (“Release”). 1. I understand that in exchange for signing thi

June 4, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 3, 2019 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 Not applicable (State or other jurisdiction of incorporation or

May 15, 2019 EX-99.1

MeiraGTx Reports First Quarter 2019 Financial Results and Provides Corporate Update ● Positive 6-month results from Phase 1/2 clinical trial of AAV-RPE65 ● Enrollment completed in the Phase 1/2 clinical trial investigating AAV-CNGB3 gene therapy for

EX-99.1 Exhibit 99.1 MeiraGTx Reports First Quarter 2019 Financial Results and Provides Corporate Update ● Positive 6-month results from Phase 1/2 clinical trial of AAV-RPE65 ● Enrollment completed in the Phase 1/2 clinical trial investigating AAV-CNGB3 gene therapy for the treatment of achromatopsia LONDON and NEW YORK, May 14, 2019 (GLOBE NEWSWIRE) — MeiraGTx Holdings plc (NASDAQ:MGTX), a vertic

May 15, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 14, 2019 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 Not applicable (State or other jurisdiction of incorporation or

May 14, 2019 EX-10.1

Employment Agreement, dated March 25, 2019, between MeiraGTx, LLC and Bruce Gottlieb.

EX-10.1 Exhibit 10.1 March 25, 2019 Mr. Bruce Gottlieb Dear Bruce: This letter shall formalize our offer of employment with MeiraGTx, LLC (“Meira”), a subsidiary of MeiraGTx Limited, a subsidiary of MeiraGTx Holdings plc (together, the “Company”) as General Counsel reporting solely and directly to Alexandria Forbes, Chief Executive Officer. Your employment will begin on April 1, 2019. Your employm

May 14, 2019 10-Q

MGTX / MeiraGTx Holdings plc 10-Q Quarterly Report 10-Q

10-Q Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

May 10, 2019 EX-99.1

MeiraGTx Appoints Nicole Seligman to Board of Directors

EX-99.1 Exhibit 99.1 MeiraGTx Appoints Nicole Seligman to Board of Directors LONDON and NEW YORK, May 10, 2019 (GLOBE NEWSWIRE) — MeiraGTx Holdings plc (NASDAQ:MGTX), a vertically integrated, clinical stage gene therapy company, today announced the appointment of Nicole Seligman to its Board of Directors. Ms. Seligman is an accomplished leader with extensive executive, legal, compliance and govern

May 10, 2019 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 9, 2019 MeiraGTx Holdings plc (Exact name of registrant as specified in its charter) Cayman Islands 001-38520 Not applicable (State or other jurisdiction of incorporation or o

April 29, 2019 DEFA14A

MGTX / MeiraGTx Holdings plc DEFA14A DEFA14A

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule

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