OSS / One Stop Systems, Inc. - SEC फाइलिंग, वार्षिक रिपोर्ट, प्रॉक्सी स्टेटमेंट

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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: 001-38371 One Stop Systems, Inc.

FORM 8-K Item 5.07 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): May 14, 2025 One Stop Systems, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission Fil

FORM 8-K Item 5.02 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): May 7, 2025 One Stop Systems, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission File

Hi Mike,

Hi Mike, I have decided to not seek reelection to the OSS board. I will serve out my current term. Thank you for your support. regards Ken Sent from my iPad

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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: 001-38371 One Stop Systems, Inc.

April 16, 2025

April 16, 2025 One Stop Systems, Inc. 2235 Enterprise Street #110 Escondido, California 92029 Attn: Board of Directors Dear OSS Board Members, This letter serves as notice of my resignation from the Board of Directors (the “Board”) of One Stop Systems, Inc. (“OSS” or the “Company”), effective immediately. While I appreciated the opportunity to work closely with several of you to help the Company e

FORM 8-K Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. On April 16, 2025, Mr. Joseph Manko, Jr. notified the Board of Directors (the “Boar

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 16, 2025 One Stop Systems, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission F

Gioia Messinger Ken Potashner

Gioia Messinger Director and Chair, Nominating and Governance Committee, One Stop Systems gioia.

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, 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): March 13, 2025 One Stop Systems, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission F

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

ARTICLE I CORPORATE OFFICES ARTICLE II MEETINGS OF STOCKHOLDERS ARTICLE III DIRECTORS ARTICLE IV COMMITTEES ARTICLE V OFFICERS ARTICLE VI RECORDS AND REPORTS ARTICLE VII GENERAL MATTERS ARTICLE VIII NOTICE BY ELECTRONIC TRANSMISSION ARTICLE IX INDEMN

SECOND AMENDED AND RESTATED BYLAWS OF ONE STOP SYSTEMS, INC. (a Delaware corporation) TABLE OF CONTENTS Page ARTICLE 1 CORPORATE OFFICES 1 1.1 Registered Office 1 1.2 Other Offices 1 ARTICLE 2 MEETINGS OF STOCKHOLDERS 1 2.1 Place of Meetings 1 2.2 Annual Meeting 1 2.3 Special Meeting 1 2.4 Advance Notice Procedures for Business Brought Before a Meeting 1 2.5 Advance Notice Procedures for Nominatio

One Stop Systems, Inc. Compensation Recovery Policy

EXHIBIT 97.1 One Stop Systems, Inc. Compensation Recovery Policy Adopted: October 31, 2023 1. INTRODUCTION One Stop Systems, Inc. (the “Company”) is committed to creating and maintaining strong corporate governance practices. As part of this commitment, and in order to comply with applicable rules and regulations, the Company’s Board of Directors (the “Board”) has adopted this Compensation Recover

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ 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 001-38371 One Stop System

Eleventh Amendment to Lease Agreement, dated September 1, 2023.

Exhibit 10.15 ELEVENTH AMENDMENT TO LEASE This Eleventh Amendment to Lease (“Amendment”) is entered into, and dated for reference purposes, as of September 1, 2023 (the “Execution Date”) by and between PACIFICA ENCINITAS BEACH, LLC, a California limited liability company, PACIFICA REAL ESTATE V, LLC, a California limited company, SR32 SAN DIEGO PORTFOLIO, LLC, a California limited liability compan

Regulation FD Disclosure, 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 19, 2025 One Stop Systems, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission F

One Stop Systems Reports Q4 2024 Results Strength in both segments contributed to consolidated year-over-year revenue growth for Q4 2024 Consolidated revenue increased sequentially every quarter throughout 2024, reflecting the success of the Company’

One Stop Systems Reports Q4 2024 Results Strength in both segments contributed to consolidated year-over-year revenue growth for Q4 2024 Consolidated revenue increased sequentially every quarter throughout 2024, reflecting the success of the Company’s transformation strategy to higher-growth markets Management expects double-digit consolidated revenue growth in 2025, driven by anticipated OSS segment revenue of over 20% and consolidated EBITDA break even for the year ESCONDIDO, Calif.

One Stop Systems, Inc. Insider Trading Policy

EX-19.1 3 oss-ex191.htm EX-19.1 EXHIBIT 19.1 ONE STOP SYSTEMS, INC. INSIDER TRADING POLICY Last Updated: March 2024 This Insider Trading Policy (this “Policy”) provides the standards of One Stop Systems, Inc. (the “Company”) on trading and causing the trading of the Company’s securities or securities of other publicly-traded companies while in possession of material non-public information. This Po

Corporate Presentation January 2025 Bringing the POWER of the Datacenter to the Rugged EDGE NASDAQ:OSS

Corporate Presentation January 2025 Bringing the POWER of the Datacenter to the Rugged EDGE NASDAQ:OSS Important Disclaimers & Cautions Regarding Forward-Looking Statements One Stop Systems cautions you that statements in this presentation that are not a description of historical facts are forward-looking statements.

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

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): January 14, 2025 One Stop Systems, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission

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, 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 04, 2024 One Stop Systems, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commissio

One Stop Systems Reports Q3 2024 Results Momentum accelerating as OSS segment revenue for Q3 2024 increased 17.5% year-over-year Consolidated revenue increased sequentially to $13.7 million in Q3 2024 OSS segment orders of $8.1 million, outpacing qua

Exhibit 99.2 One Stop Systems Reports Q3 2024 Results Momentum accelerating as OSS segment revenue for Q3 2024 increased 17.5% year-over-year Consolidated revenue increased sequentially to $13.7 million in Q3 2024 OSS segment orders of $8.1 million, outpacing quarterly revenue for the third consecutive quarter Expects continued sequential growth with consolidated Q4 2024 revenue of approximately $

Executive Employment Agreement between One Stop Systems, Inc. and Daniel Gabel, executed November 4, 2024

Exhibit 10.1 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (hereinafter this “Agreement”) is entered into as of the last date set forth on the signature page hereto and becomes effective as of November 11, 2024 (hereinafter the “Effective Date”) by and between One Stop Systems, Inc. (hereinafter “OSS” or “Employer” or the “Company”), and Daniel Gabel (hereinafter “Executive”). RECITALS A. OSS is

One Stop Systems Announces Chief Financial Officer Transition Daniel Gabel Appointed Chief Financial Officer, Treasurer and Secretary

Exhibit 99.1 One Stop Systems Announces Chief Financial Officer Transition Daniel Gabel Appointed Chief Financial Officer, Treasurer and Secretary ESCONDIDO, Calif. – November 6, 2024 – One Stop Systems, Inc. (OSS or the Company) (Nasdaq: OSS), a leader in rugged Enterprise Class compute for artificial intelligence (AI), machine learning (ML) and sensor processing at the edge, today announced Dani

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 Number: 001-38371 One Stop Systems, Inc.

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, 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): August 09, 2024 One Stop Systems, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission

Certificate of Amendment to the Amended and Restated Bylaws of the Company, as amended, dated August 9, 2024

Exhibit 3.1 CERTIFICATE OF AMENDMENT TO THE AMENDED AND RESTATED BYLAWS, AS AMENDED, OF ONE STOP SYSTEMS, INC. (a Delaware corporation) The undersigned hereby certifies that: 1. He is the duly elected, qualified and acting Secretary of One Stop Systems, Inc., a Delaware corporation (the “Company”), and in charge of the corporate minute book and corporate records of the Company. 2. On August 9, 202

Regulation FD Disclosure, 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 08, 2024 One Stop Systems, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission

One Stop Systems Reports Q2 2024 Results Q2 2024 revenues of $13.2 million, sequential increase and in line with plan OSS segment orders of $7.5 million, outpacing quarterly revenue for the second consecutive quarter Management expects continued sequ

One Stop Systems Reports Q2 2024 Results Q2 2024 revenues of $13.2 million, sequential increase and in line with plan OSS segment orders of $7.5 million, outpacing quarterly revenue for the second consecutive quarter Management expects continued sequential growth with consolidated Q3 2024 revenue of $13.3 million, and OSS segment revenue expected to increase 15% year-over-year to $6.3 million ESCO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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: 001-38371 One Stop Systems, Inc.

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Table Form S-8 (Form Type) One Stop Systems, Inc.

As filed with the Securities and Exchange Commission on July 24, 2024

As filed with the Securities and Exchange Commission on July 24, 2024 Registration No.

Amendment No. 3 to 2017 Equity Incentive Plan of One Stop Systems, Inc., dated May 15, 2024.

Exhibit 10.1 AMENDMENT NO. 3 TO THE 2017 EQUITY INCENTIVE PLAN OF ONE STOP SYSTEMS, INC. WHEREAS, the Board of Directors and stockholders of One Stop Systems, Inc. (the “Company”) have each adopted and approved the Company’s 2017 Equity Incentive Plan, dated as of October 10, 2017, as amended by (i) that Amendment No. 1 to the 2017 Equity Incentive Plan of the Company, dated as of June 24, 2020, a

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, 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): May 15, 2024 One Stop Systems, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission Fil

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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: 001-38371 One Stop Systems, Inc.

One Stop Systems Reports Q1 2024 Results Company to Hold a Conference Call Today at 5:00 p.m. Eastern Time

Exhibit 99.1 One Stop Systems Reports Q1 2024 Results Company to Hold a Conference Call Today at 5:00 p.m. Eastern Time ESCONDIDO, Calif. – May 9, 2024 – – One Stop Systems, Inc. ("OSS" or the "Company") (Nasdaq: OSS), a leader in rugged Enterprise Class compute for artificial intelligence (AI), machine learning (ML) and sensor processing at the edge, reported results for the first quarter ended M

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition, Completion of Acquisition or Disposition of Assets

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 09, 2024 One Stop Systems, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission Fil

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

One Stop Systems CEO and Chairman Issue Letter to Shareholders Looking forward to a Transformative 2024

Exhibit 99.1 One Stop Systems CEO and Chairman Issue Letter to Shareholders Looking forward to a Transformative 2024 ESCONDIDO, Calif. – April 15, 2024 – One Stop Systems, Inc. (“OSS” or the "Company") (Nasdaq: OSS), a leader in rugged Enterprise Class compute for artificial intelligence (AI), machine learning (ML) and sensor processing at the edge, today issued a shareholder letter, which reviews

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

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 15, 2024 One Stop Systems, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission F

One Stop Systems Reports Q4 2023 Results Company to Hold a Conference Call Today at 5:00 p.m. Eastern Time

Exhibit 99.1 One Stop Systems Reports Q4 2023 Results Company to Hold a Conference Call Today at 5:00 p.m. Eastern Time ESCONDIDO, Calif. – March 21, 2024 – – One Stop Systems, Inc. (Nasdaq: OSS), a leader in rugged high- performance compute (HPC) for artificial intelligence (AI), machine learning (ML) and sensor processing at the edge, reported results for the fourth quarter and twelve months end

Eleventh Amendment to Lease Agreement, dated September 1, 2023.

Exhibit 10.15 ELEVENTH AMENDMENT TO LEASE This Eleventh Amendment to Lease (“Amendment”) is entered into, and dated for reference purposes, as of September 1, 2023 (the “Execution Date”) by and between PACIFICA ENCINITAS BEACH, LLC, a California limited liability company, PACIFICA REAL ESTATE V, LLC, a California limited company, SR32 SAN DIEGO PORTFOLIO, LLC, a California limited liability compan

One Stop Systems, Inc. Compensation Recovery Policy

EXHIBIT 97.1 One Stop Systems, Inc. Compensation Recovery Policy Adopted: October 31, 2023 1. INTRODUCTION One Stop Systems, Inc. (the “Company”) is committed to creating and maintaining strong corporate governance practices. As part of this commitment, and in order to comply with applicable rules and regulations, the Company’s Board of Directors (the “Board”) has adopted this Compensation Recover

One Stop Systems, Inc. Insider Trading Policy

EXHIBIT 19.1 ONE STOP SYSTEMS, INC. INSIDER TRADING POLICY Last Updated: March 2024 This Insider Trading Policy (this “Policy”) provides the standards of One Stop Systems, Inc. (the “Company”) on trading and causing the trading of the Company’s securities or securities of other publicly-traded companies while in possession of material non-public information. This Policy prohibits entering into tra

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ 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 001-38371 One Stop System

Regulation FD Disclosure, 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 21, 2024 One Stop Systems, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission F

OSS / One Stop Systems, Inc. / Lynrock Lake LP Passive Investment

SC 13G/A 1 formsc13ga-onestop.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* One Stop Systems, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 68247W109 (CUSIP Number) December 31, 2023 (Date of Event which Requires Filing of this Statement) Check th

OSS Appoints Technology and Defense Industry Executive, Mitchell H. Herbets, to Board of Directors

EXHIBIT 99.1 OSS Appoints Technology and Defense Industry Executive, Mitchell H. Herbets, to Board of Directors ESCONDIDO, Calif. – November 30, 2023 – One Stop Systems, Inc. (Nasdaq: OSS), a leader in rugged high performance compute (HPC) for artificial intelligence (AI), machine learning (ML) and sensor processing at the edge, has appointed Mitchell H. Herbets as a member of its board of directo

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): November 27, 2023 One Stop Systems, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commissio

One Stop Systems Reports Q3 2023 Results Company to Hold a Conference Call Today at 5:00 p.m. Eastern Time

Exhibit 99.1 Press Release One Stop Systems Reports Q3 2023 Results Company to Hold a Conference Call Today at 5:00 p.m. Eastern Time ESCONDIDO, Calif. – November 9, 2023 – One Stop Systems, Inc. (Nasdaq: OSS), a leader in ruggedized edge processing solutions for Artificial Intelligence (AI), Machine Learning and sensor processing, reported results for the third quarter and nine months ended Septe

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, 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 06, 2023 One Stop Systems, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commissio

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 Number: 001-38371 One Stop Systems, Inc.

JOINT FILING AGREEMENT

EX-99.1 2 d542584dex991.htm EX-99.1 Exhibit 1 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned agree to the joint filing with the Securities and Exchange Commission on behalf of each of them of Schedule 13D/A, to which this Exhibit 1 is attached (including amendments thereto) with respect to certain shares of

OSS / One Stop Systems Inc / Horton Capital Partners Fund, L.P. - SC 13D Activist Investment

SC 13D 1 d542584dsc13d.htm SC 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 One Stop Systems, Inc. (Name of Issuer) Common Stock, Par Value $0.0001 Per Share (Title of Class of Securities) 68247W109 (CUSIP Number) JOSEPH M. MANKO, JR. HORTON CAPITAL PARTNERS, LLC 1717 Arch Street, Suite 3740 Philadelphia, PA 19103

One Stop Systems, Inc. 2235 Enterprise Street #110 Escondido, CA 92029

One Stop Systems, Inc. 2235 Enterprise Street #110 Escondido, CA 92029 August 23, 2023 VIA EDGAR United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Re: One Stop Systems, Inc. Registration Statement on Form S-3 Filed August 18, 2023 File No. 333-274073 Ladies and Gentlemen: Pursuant to Rule 461 under the Securities Act of 1933,

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) One Stop Systems, Inc.

One Stop Systems, Inc. Form of Employee Inducement Non-Statutory Stock Option Grant Notice and Agreement

Exhibit 99.1 One Stop Systems, Inc. Stock Option Grant Notice Inducement Grant FOR GOOD AND VALUABLE CONSIDERATION, One Stop Systems, Inc. (the “Company”), hereby grants to the Optionee named below, a stock option (the “Option”) to purchase any part or all of the specified number of shares of its Common Stock (“Option Shares”), upon the terms and subject to the conditions set forth in that Employm

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) One Stop Systems, Inc.

Form of Indenture

Exhibit 4.2 ONE STOP SYSTEMS, INC. as the Issuer, and as the Trustee INDENTURE Dated as of , 202 TABLE OF CONTENTS Page Article 1 - DEFINITIONS AND INCORPORATION BY REFERENCE 6 1.1 DEFINITIONS. 6 1.2 OTHER DEFINITIONS. 10 1.3 INCORPORATION BY REFERENCE OF TRUST INDENTURE ACT. 11 1.4 RULES OF CONSTRUCTION. 11 Article 2 - THE SECURITIES 12 2.1 ISSUABLE IN SERIES. 12 2.2 ESTABLISHMENT OF TERMS OF SER

As filed with the Securities and Exchange Commission on August 18, 2023

As filed with the Securities and Exchange Commission on August 18, 2023 Registration No.

As filed with the Securities and Exchange Commission on August 18, 2023

As filed with the Securities and Exchange Commission on August 18, 2023 Registration No.

One Stop Systems, Inc. Form of Employee Inducement Restricted Stock Unit Grant Notice and Agreement

Exhibit 99.2 One Stop Systems, Inc. Restricted Stock Unit Notice of Grant Inducement Grant FOR GOOD AND VALUABLE CONSIDERATION, One Stop Systems, Inc., a Delaware corporation (the “Company”), hereby grants to the Participant named below, an Award of Restricted Stock Units (the “RSU Award”), upon the terms and subject to the conditions set forth in that Employment Agreement entered into by and betw

One Stop Systems Reports Q2 2023 Results Company to Hold a Conference Call Today at 5:00 p.m. Eastern Time

EX-99.1 Exhibit 99.1 One Stop Systems Reports Q2 2023 Results Company to Hold a Conference Call Today at 5:00 p.m. Eastern Time ESCONDIDO, Calif. – August 10, 2023 – One Stop Systems, Inc. (Nasdaq: OSS), a leader in AI Transportable solutions on the edge, reported results for the second quarter ended June 30, 2023. All quarterly comparisons are to the same year-ago period unless otherwise noted. T

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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: 001-38371 One Stop Systems, Inc.

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 ONE STOP SYSTEMS,

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 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission

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 20, 2023 ONE STOP SYSTEMS, I

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 20, 2023 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission Fi

One Stop Systems Appoints Industry Veteran, Robert Kalebaugh, as Vice President of Sales

EX-99.1 Exhibit 99.1 One Stop Systems Appoints Industry Veteran, Robert Kalebaugh, as Vice President of Sales ESCONDIDO, California - July 20, 2023 – One Stop Systems, Inc. (Nasdaq: OSS), a leader in AI Transportable compute and storage solutions at the edge, has appointed industry veteran and seasoned sales executive, Robert Kalebaugh, to the new position of vice president of sales. Kalebaugh bri

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 1, 2023 ONE STOP SYSTEMS, IN

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 1, 2023 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission Fil

Executive Employment Agreement between One Stop Systems, Inc. and John Morrison, executed June 1 2023.

EX-10.1 Exhibit 10.1 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (hereinafter this “Agreement”) is entered into as of the last date set forth on the signature page hereto and becomes effective as of June 1, 2023 (hereinafter the “Effective Date”) by and between One Stop Systems, Inc. (hereinafter “OSS” or “Employer” or the “Company”), and John Morrison (hereinafter “Executive”). RECITALS A. OSS

Executive Employment Agreement between One Stop Systems, Inc. and Jim Ison, executed June 4, 2023.

EX-10.2 Exhibit 10.2 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (hereinafter this “Agreement”) is entered into as of the last date set forth on the signature page hereto and becomes effective as of June 1, 2023 (hereinafter the “Effective Date”) by and between One Stop Systems, Inc. (hereinafter “OSS” or “Employer” or the “Company”), and Jim Ison (hereinafter “Executive”). RECITALS A. OSS is a

Executive Employment Agreement between One Stop Systems, Inc. and Michael Knowles, executed May 16, 2023.

EX-10.1 Exhibit 10.1 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (hereinafter this “Agreement”) is entered into as of the last date set forth on the signature page hereto and becomes effective as of June 5, 2023 (hereinafter the “Effective Date”) by and between One Stop Systems, Inc., a Delaware corporation (hereinafter, “OSS” or “Employer” or the “Company”), and Michael Knowles (hereinafter “E

One Stop Systems Announces Appointment of Aerospace and Defense Veteran Michael Knowles as President and Chief Executive Officer

EX-99.1 Exhibit 99.1 One Stop Systems Announces Appointment of Aerospace and Defense Veteran Michael Knowles as President and Chief Executive Officer ESCONDIDO, California—May 22, 2023 – One Stop Systems, Inc. (Nasdaq: OSS), a leader in AI Transportable compute and storage solutions at the edge, today announced that Michael Knowles has been appointed as its new President and CEO, effective June 5,

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 16, 2023 ONE STOP SYSTEMS, IN

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 16, 2023 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission Fil

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 18, 2023 ONE STOP SYSTEMS, IN

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 18, 2023 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission Fil

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 ONE STOP SYSTEMS, IN

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 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission Fil

OSS Reports Q1 2023 Results

EX-99.1 Exhibit 99.1 OSS Reports Q1 2023 Results ESCONDIDO, Calif. – May 11, 2023 – One Stop Systems, Inc. (Nasdaq: OSS), a leader in AI Transportable solutions on the edge, reported results for the first quarter ended March 31, 2023. All quarterly comparisons are to the same year-ago period, unless otherwise noted. The company will hold a conference call at 5:00 p.m. Eastern time today to discuss

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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: 001-38371 One Stop Systems, Inc.

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

Dear Fellow Stockholders,

EX-99.1 Exhibit 99.1 Dear Fellow Stockholders, OSS accomplished significant achievements this past year, including the continued validation of our strategy, which we believe should position the company for continued success. We gained momentum towards achieving our objective of providing the highest performance computing and storage platforms for AI Transportable applications. This has positioned

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 18, 2023 ONE STOP SYSTEMS,

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 18, 2023 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission F

Amended and Restated Employment Agreement between One Stop Systems, Inc. and David Raun, dated April 3, 2023.

EX-10.1 Exhibit 10.1 AMENDED AND RESTATED EMPLOYMENT AGREEMENT THIS AMENDED AND RESTATED EMPLOYMENT AGREEMENT (hereinafter, this “Agreement”) is entered into and becomes effective as of April 3, 2023 (hereinafter, the “Effective Date”) by and between One Stop Systems, Inc. (hereinafter “OSS” or “Employer” or “Company”), and David Raun (hereinafter “Executive”). RECITALS WHEREAS, the Company is a c

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 3, 2023 ONE STOP SYSTEMS, I

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 3, 2023 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission Fi

Certificate of Amendment to the Amended and Restated Bylaws of the Company, dated April 7, 2023.

EX-3.1 Exhibit 3.1 CERTIFICATE OF AMENDMENT TO THE AMENDED AND RESTATED BYLAWS OF ONE STOP SYSTEMS, INC. (a Delaware corporation) The undersigned hereby certifies that: 1. He is the duly elected, qualified and acting Secretary of One Stop Systems, Inc., a Delaware corporation (the “Company”), and in charge of the corporate minute book and corporate records of the Company. 2. On April 6, 2023, the

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 23, 2023 ONE STOP SYSTEMS,

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 23, 2023 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission F

OSS Reports Record Revenue up 17% to $72.4 Million and Adjusted EBITDA up 6% to $5.2 Million

EX-99.1 Exhibit 99.1 OSS Reports Record Revenue up 17% to $72.4 Million and Adjusted EBITDA up 6% to $5.2 Million ESCONDIDO, Calif. – March 23, 2023 – One Stop Systems, Inc. (Nasdaq: OSS), a leader in AI Transportable solutions on the edge, reported results for the fourth quarter and full year ended December 31, 2022. All quarterly and full year comparisons are to the same year-ago periods, unless

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ 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 001-38371 One Stop System

Company Organizational Structure

Exhibit 21.1

OSS / One Stop Systems Inc / Lynrock Lake LP Passive Investment

SC 13G 1 formsc13g-onestop.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* One Stop Systems, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 68247W109 (CUSIP Number) December 31, 2022 (Date of Event which Requires Filing of this Statement) Check the ap

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): February 9, 2023 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission

OSS Chief Executive Officer David Raun to Step Down Following Appointment of Successor Mr. Raun to Continue as a Member of the Board of Directors

EX-99.1 Exhibit 99.1 OSS Chief Executive Officer David Raun to Step Down Following Appointment of Successor Mr. Raun to Continue as a Member of the Board of Directors ESCONDIDO, Calif., February 9, 2023 – One Stop Systems, Inc. (Nasdaq: OSS), a leading provider of AI Transportable compute and storage solutions at the edge, announced today that its chief executive officer, David Raun, will be stepp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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: 001-38371 One Stop Systems, Inc.

Regulation FD Disclosure, 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, 2022 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commissio

OSS Q3 2022 Revenue up 18% to Record $18.8 Million

Exhibit 99.1 OSS Q3 2022 Revenue up 18% to Record $18.8 Million ESCONDIDO, Calif. ? November 10, 2022 ? One Stop Systems, Inc. (Nasdaq: OSS), a leader in AI Transportable solutions on the edge, reported results for the third quarter ended September 30, 2022. All quarterly and nine month comparisons are to the same year-ago periods, unless otherwise noted. The company will hold a conference call at

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): October 24, 2022 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission

OSS to Deliver Ruggedized Compute Solution for Embark’s Commercial Autonomous Truck Deployment

Exhibit 99.1 OSS to Deliver Ruggedized Compute Solution for Embark?s Commercial Autonomous Truck Deployment ESCONDIDO, Calif. ? October 24, 2022 ? One Stop Systems, Inc. (Nasdaq: OSS), a leader in AI Transportable solutions on the edge, has secured two new autonomous truck program wins with Embark Trucks, Inc. (Nasdaq: EMBK), a leading developer of autonomous technology for the trucking industry.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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: 001-38371 One Stop Systems, Inc.

Regulation FD Disclosure, 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 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission

OSS Q2 2022 Revenue up 23% to Record $18.3 Million

Exhibit 99.1 OSS Q2 2022 Revenue up 23% to Record $18.3 Million ESCONDIDO, Calif. ? August 11, 2022 ? One Stop Systems, Inc. (Nasdaq: OSS), a leader in AI Transportable solutions on the edge, reported results for the second quarter ended June 30, 2022. All quarterly comparisons are to the same year-ago period unless otherwise noted. The company will hold a conference call at 5:00 p.m. Eastern time

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): May 18, 2022 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission Fil

OSS Q1 2022 Revenue up 28% to Record $17.1 Million, Net Income of $579,000 or $0.03 per share

Exhibit 99.1 OSS Q1 2022 Revenue up 28% to Record $17.1 Million, Net Income of $579,000 or $0.03 per share ESCONDIDO, Calif. ? May 12, 2022 ? One Stop Systems, Inc. (Nasdaq: OSS), a leader in AI Transportable solutions on the edge, reported results for the first quarter ended March 31, 2022. All quarterly comparisons are to the same year-ago period unless otherwise noted. The company will hold a c

Regulation FD Disclosure, 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 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission Fil

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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: 001-38371 One Stop Systems, Inc.

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

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

` UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 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 001-38371 One Stop Syst

Regulation FD Disclosure, 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 24, 2022 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission F

Description of Capital Stock

Exhibit 4.1 DESCRIPTION OF CAPITAL STOCK The following is a summary of the material terms and provisions of the securities of One Stop Systems, Inc. (?us,? ?our,? ?we? or the ?Company?) that are registered under Section 12 of the Securities Exchange Act of 1934, as amended, and certain provisions of our certificate of incorporation, as amended and restated, and bylaws, as amended, that are current

OSS Reports Record 2021 Revenue, Net Income, and Adj. EBITDA; Revenue up 19% to $62.0 Million, Net Income of $2.3 million, Adj. EBITDA Triples to $4.9 million

Exhibit 99.1 OSS Reports Record 2021 Revenue, Net Income, and Adj. EBITDA; Revenue up 19% to $62.0 Million, Net Income of $2.3 million, Adj. EBITDA Triples to $4.9 million ESCONDIDO, Calif. ? March 24, 2022 ? One Stop Systems, Inc. (Nasdaq: OSS), a leader in AI Transportable solutions on the edge, reported results for the fourth quarter and full year ended December 31, 2021. Q4 Financial Highlight

OSS Reports Q3 2021 Revenue up 23%, Income of $1 million

Exhibit 99.1 OSS Reports Q3 2021 Revenue up 23%, Income of $1 million ESCONDIDO, Calif., November 10, 2021 ? One Stop Systems, Inc. (Nasdaq: OSS), a leader in AI Transportable solutions on the edge, reported results for the third quarter ended September 30, 2021. All quarterly comparisons are to the same year-ago period unless otherwise noted. The company will hold a conference call at 5:00 p.m. E

Regulation FD Disclosure, 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 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commissio

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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: 001-38371 One Stop Systems, Inc.

Regulation FD Disclosure, 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 12, 2021 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission

OSS Reports Q2 2021 Revenue up 28% to $14.9 Million, Delivering Income of $1.7 Million or $0.09 per Share

Exhibit 99.1 Press Release OSS Reports Q2 2021 Revenue up 28% to $14.9 Million, Delivering Income of $1.7 Million or $0.09 per Share ESCONDIDO, Calif., August 12, 2021 ? One Stop Systems, Inc. (Nasdaq: OSS), a leader in AI Transportable solutions on the edge, reported results for the second quarter ended June 30, 2021. All quarterly comparisons are to the same year-ago period unless otherwise note

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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: 001-38371 One Stop Systems, Inc.

Amendment No. 2 to the 2017 Stock Equity Incentive Plan.

Exhibit 10.7 AMENDMENT NO. 2 TO THE 2017 EQUITY INCENTIVE PLAN OF ONE STOP SYSTEMS, INC. WHEREAS, the Board of Directors and stockholders of One Stop Systems, Inc. (the ?Company?) have adopted the 2017 Equity Incentive Plan, dated as of October 10, 2017, as amended by that Amendment No. 1 to the 2017 Equity Incentive Plan of the Company (the ?Plan?); WHEREAS, pursuant to Section 4(a) of the Plan,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT THE SECURITIES ACT OF 1933 ONE STOP SYSTEMS, INC. (Exact name of registrant as specified in its charter) Delaware 33-0885351 (State or other juris

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ONE STOP SYSTEMS, INC. (Exact name of registrant as specified in its charter) Delaware 33-0885351 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) 2235 Enterprise Street #110 Escondido, California 92029 (Address

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): May 19, 2021 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission Fil

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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: 001-38371 One Stop Systems, Inc.

Regulation FD Disclosure, 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 13, 2021 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission Fil

OSS Reports Q1 2021 Results; Improves Adjusted EBITDA by $2 Million on Expanded Gross Margins

Exhibit 99.1 Press Release OSS Reports Q1 2021 Results; Improves Adjusted EBITDA by $2 Million on Expanded Gross Margins ESCONDIDO, Calif., May 13, 2021 ? One Stop Systems, Inc. (Nasdaq: OSS), a leader in AI Transportable? solutions on the edge, reported results for the first quarter ended March 31, 2021. All quarterly comparisons are to the same year-ago period. The company will hold a conference

Schedule 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 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)) ? Definitive Proxy State

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 25, 2021 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission F

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 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 001-38371 One Stop System

OSS Reports Q4 2020 Revenue up 7% over Q3 to $13.9 Million, Net Income of $244,000 or $0.01 per Share

Exhibit 99.1 Press Release OSS Reports Q4 2020 Revenue up 7% over Q3 to $13.9 Million, Net Income of $244,000 or $0.01 per Share ESCONDIDO, Calif., March 25, 2021 ? One Stop Systems, Inc. (Nasdaq: OSS), a leader in specialized high-performance edge computing, reported results for the fourth quarter and full year ended December 31, 2020. Q4 Financial Highlights ? Revenue in the fourth quarter of 20

List of Subsidiaries.

One Stop Systems, Inc. Exhibit 21.1 Organizational Structure ? One Stop Systems Inc. ? Concept Development, LLC ? One Stop Systems, GmbH ? Bressner Technology GmbH One Stop Systems, Inc. Parent Company Concept Development, LLC 100% wholly owned subsidiary One Stop Systems, GmbH 100% wholly owned German subsidiary Bressner Technology GmbH 100% wholly owned German subsidiary

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. N/A)* One Stop Systems, Inc. (Name of Issuer) Ordinary Shares, $0.0001 Per share (Title of Class of Securities

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

Joint Filing Statement Statement Pursuant to Rule 13d-1(k)(1)

Exhibit 1 Joint Filing Statement Statement Pursuant to Rule 13d-1(k)(1) The undersigned hereby consent and agree to file a joint statement on Schedule 13G under the Securities Exchange Act of 1934, as amended, with respect to the Common Stock, $0.

ONE STOP SYSTEMS, INC. ANNOUNCES $10 MILLION REGISTERED DIRECT OFFERING PRICED AT-THE-MARKET UNDER NASDAQ RULES

EX-99.1 Exhibit 99.1 ONE STOP SYSTEMS, INC. ANNOUNCES $10 MILLION REGISTERED DIRECT OFFERING PRICED AT-THE-MARKET UNDER NASDAQ RULES ESCONDIDO, Calif., March 1, 2021 (GLOBE NEWSWIRE) — One Stop Systems, Inc. (Nasdaq: OSS), a leader in specialized high-performance edge computing, announced today that it has entered into a definitive agreement with an institutional investor for the purchase and sale

Entry into a Material Definitive Agreement, 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): March 1, 2021 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission Fi

1,497,006 Shares of Common Stock

Table of Contents Filed pursuant to Rule 424(b)(5) Registration Statement No. 333-231513 PROSPECTUS SUPPLEMENT (To Prospectus Dated June 19, 2019) 1,497,006 Shares of Common Stock We are offering an aggregate of 1,497,006 of our common shares pursuant to a Securities Purchase Agreement, dated March 1, 2021, between us and the purchaser identified therein (the ?Purchaser?) pursuant to this prospect

Form of Securities Purchase Agreement

Exhibit 10.1 EXECUTION VERSION SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this ?Agreement?) is dated as of March 1, 2021, between One Stop Systems, Inc., a Delaware corporation (the ?Company?), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a ?Purchaser? and collectively the ?Purchasers?). WHEREAS, subject to the term

Form of Placement Agency Agreement

Exhibit 10.2 PLACEMENT AGENCY AGREEMENT March 1, 2021 One Stop Systems, Inc. 2235 Enterprise Street #110 Escondido, California 92029 Attention: John W. Morrison, Jr. Chief Financial Officer Dear Mr. Morrison: This letter (the ?Agreement?) constitutes the agreement between A.G.P./Alliance Global Partners, as lead placement agent (?A.G.P.?), and The Benchmark Company LLC (?Benchmark?), as co-placeme

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

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 12, 2020 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commi

OSS Reports Q3 2020 Revenue up 12% to $13.0 Million Sequentially, Driving Net Income to $858,000 or $0.05 per Share

EX-99.1 Exhibit 99.1 OSS Reports Q3 2020 Revenue up 12% to $13.0 Million Sequentially, Driving Net Income to $858,000 or $0.05 per Share ESCONDIDO, Calif., November 12, 2020 – One Stop Systems, Inc. (Nasdaq: OSS), a leader in specialized high-performance edge computing, reported results for the third quarter and nine months ended September 30, 2020. All quarterly and first nine-month comparisons a

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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: 001-38371 One Stop Systems, Inc.

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 6, 2020 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commissi

Quarterly Report - OSS-10-Q-20200630

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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: 001-38371 One Stop Systems, Inc.

One Stop Systems Reports Q2 2020 Revenue of $11.6 Million with First Half 2020 of $25.0 Million

EX-99.1 EXHIBIT 99.1 One Stop Systems Reports Q2 2020 Revenue of $11.6 Million with First Half 2020 of $25.0 Million ESCONDIDO, Calif., August 6, 2020 – One Stop Systems, Inc. (Nasdaq: OSS), a global leader in specialized high-performance edge computing, reported results for second quarter and first half ended June 30, 2020. Financial Highlights • Q2 2020 revenue totaled $11.6 million down 22% fro

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 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 9, 2020 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commis

Amendment No. 1 to the 2017 Stock Equity Incentive Plan.

EX-10.2 Exhibit 10.2 AMENDMENT NO. 1 TO THE 2017 EQUITY INCENTIVE PLAN OF ONE STOP SYSTEMS, INC. Dated: June 24, 2020 Pursuant to Section 16 of the 2017 Equity Incentive Plan (the “Plan”) of One Stop Systems, Inc., a Delaware corporation (the “Company”), the Board of Directors of the Company, being the Administrator of the Plan, hereby amends the Plan as follows: 1. Section 4(b) of the Plan is her

Employment Agreement between One Stop Systems, Inc., and David Raun, dated June 24, 2020.

EX-10.1 Exhibit 10.1 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (hereinafter “Agreement”) is entered into and becomes effective as of June 24, 2020 (hereinafter “Effective Date”) by and between One Stop Systems, Inc. (hereinafter “OSS” or “Employer” or “Company”), and David Raun (hereinafter “Executive”). RECITALS A. OSS is a corporation and is doing business in the State of California. B. Bot

OSS Appoints David Raun, Technology Industry Veteran, as President & CEO

EX-99.1 Exhibit 99.1 OSS Appoints David Raun, Technology Industry Veteran, as President & CEO ESCONDIDO, Calif. – June 25, 2020 – One Stop Systems, Inc. (Nasdaq: OSS), a leader in specialized high-performance edge computing, has appointed company director and interim CEO, David Raun, as its new president and CEO. Raun has served as interim CEO of OSS since February 2020, and on the board of OSS si

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): June 24, 2020 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commissio

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): June 3, 2020 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission

OSS Appoints Three New Independent Board Members, Strengthening Corporate Governance

EX-99.1 Exhibit 99.1 OSS Appoints Three New Independent Board Members, Strengthening Corporate Governance ESCONDIDO, Calif. – June 9, 2020 – One Stop Systems, Inc. (Nasdaq: OSS), a leader in specialized high-performance edge computing, has appointed three independent board members, Sita M. Lowman, Gioia Messinger, and Greg W. Matz, to its board of directors, effective July 1. The new directors wil

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 3, 2020 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission

- 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 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)) ☐ Definitive Pro

Promissory Note, dated as of April 28, 2020, by and between One Stop Systems, Inc., as Borrower, and Cache Valley Bank, as Lender.

EX-10.1 Exhibit 10.1 PROMISSORY NOTE Principal Loan Date Maturity Loan No Call / Coll Account Officer Initials $1,499,360.00 04-28-2020 04-28-2022 01 *** References in the boxes above are for Lender’s use only and do not limit the applicability of this document to any particular loan or item. Any item above containing “***” has been omitted due to text length limitations. Borrower: ONE STOP SYSTEM

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

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, 2020 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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: 001-38371 One Stop Systems, Inc.

OSS Reports Q1 2020 Revenue Up 33% to $13.4 Million

EX-99.1 Exhibit 99.1 OSS Reports Q1 2020 Revenue Up 33% to $13.4 Million ESCONDIDO, Calif., May 14, 2020 – One Stop Systems, Inc. (Nasdaq: OSS), a global leader in specialized high-performance edge computing and AI on the Fly®, reported record results for its first quarter ended March 31, 2020. First Quarter 2020 Financial and Operational Highlights • Revenue increased 33% to a record first quarte

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, 2020 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission

- 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 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)) ☒ Definitive Proxy State

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 24, 2020 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission F

Senior Secured Convertible Promissory Notes Shares of Common Stock Issuable Upon Conversion or Repayment of the Senior Secured Convertible Promissory Notes

424B5 Table of Contents Filed pursuant to Rule 424(b)(5) Registration Statement No.

Senior Secured Convertible Promissory Note, dated April 24, 2020, by and between the Company and the investor

Exhibit 4.2 EXECUTION COPY ANY TRANSFEREE OF THIS NOTE SHOULD CAREFULLY REVIEW THE TERMS OF THIS NOTE, INCLUDING SECTIONS 3(c)(ii) HEREOF AND 20(a) HEREOF. THE PRINCIPAL AMOUNT REPRESENTED BY THIS NOTE AND, ACCORDINGLY, THE SECURITIES ISSUABLE UPON CONVERSION HEREOF MAY BE LESS THAN THE AMOUNTS SET FORTH ON THE FACE HEREOF PURSUANT TO SECTION 3(c)(ii) OF THIS NOTE. THIS NOTE HAS BEEN ISSUED WITH O

Form of Security Agreement, dated April 20, 2020, by and between the Company, certain of its subsidiaries and the investors

EXECUTION COPY Exhibit 10.2 SECURITY AND PLEDGE AGREEMENT SECURITY AND PLEDGE AGREEMENT, dated as of April 20, 2020 (this “Agreement”), made by One Stop Systems, Inc., a Delaware corporation, with offices located at 2235 Enterprise Street #11, Escondido, California 92029 (the “Company”), and each other undersigned Person, if any (each a “Grantor” and together with the Company, collectively, the “G

OSS / One Stop Systems, Inc. PRE 14A - - PRE 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 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)) ☐ Definitive Proxy State

Form of Intercreditor Agreement, dated April 20, 2020, by and between the Company, the investors and certain secured parties

Exhibit 10.3 INTERCREDITOR AND SUBORDINATION AGREEMENT This INTERCREDITOR AND SUBORDINATION AGREEMENT (this “Agreement”), dated as of April 20, 2020, is made by and among each Existing Noteholder (as defined herein), Kenneth Potashner, as collateral agent for the Existing Noteholders (in such capacity, the “Existing Collateral Agent” and together with the Existing Noteholders, the “Existing Secure

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 20, 2020 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission F

Form of Securities Purchase Agreement, dated April 20, 2020, by and between the Company and the investors

Exhibit 10.1 SECURITIES PURCHASE AGREEMENT This SECURITIES PURCHASE AGREEMENT (the “Agreement”), dated as of April 20, 2020, is by and among One Stop Systems, Inc., a Delaware corporation with offices located at 2235 Enterprise Street, #110, Escondido, California (the “Company”), and each of the investors listed on the Schedule of Buyers attached hereto (individually, a “Buyer” and collectively, t

Form of Senior Secured Convertible Promissory Note

Exhibit 4.1 ANY TRANSFEREE OF THIS NOTE SHOULD CAREFULLY REVIEW THE TERMS OF THIS NOTE, INCLUDING SECTIONS 3(c)(ii) HEREOF AND 20(a) HEREOF. THE PRINCIPAL AMOUNT REPRESENTED BY THIS NOTE AND, ACCORDINGLY, THE SECURITIES ISSUABLE UPON CONVERSION HEREOF MAY BE LESS THAN THE AMOUNTS SET FORTH ON THE FACE HEREOF PURSUANT TO SECTION 3(c)(ii) OF THIS NOTE. THIS NOTE HAS BEEN ISSUED WITH ORIGINAL ISSUE D

Costs Associated with Exit or Disposal Activities

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 5, 2020 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commissio

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 26, 2020 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission F

OSS Reports Revenue up 28% to $18.4 Million in Q4 2019, and up 57% to $58.3 Million for the Full Year

Press Release Exhibit 99.1 OSS Reports Revenue up 28% to $18.4 Million in Q4 2019, and up 57% to $58.3 Million for the Full Year ESCONDIDO, Calif., March 26, 2020 – One Stop Systems, Inc. (Nasdaq: OSS), a leader in specialized high-performance edge computing, reported results for the fourth quarter and full year ended December 31, 2019. Q4 Financial Highlights • Revenue increased 28% to a record $

List of Subsidiaries.

One Stop Systems, Inc.Exhibit 21.1 Organizational Structure • One Stop Systems Inc. • Concept Development, LLC • One Stop Systems, GmbH • Bressner Technology GmbH Bressner Technology GmbH 100% wholly owned German subsidiary Concept Development, LLC 100% wholly owned subsidiary One Stop Systems, GmbH 100% wholly owned German subsidiary One Stop Systems, Inc. Parent Company

Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ 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 001-38371 One Stop System

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

8-K/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A 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 15, 2020 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (C

Executive Employment Agreement between One Stop Systems, Inc., and David Raun, dated March 24, 2020.

EX-10.1 Exhibit 10.1 EXECUTIVE EMPLOYMENT AGREEMENT THIS EXECUTIVE EMPLOYMENT AGREEMENT (“Agreement”) is entered into and becomes effective as of March 24, 2020, by and between One Stop Systems, Inc., a Delaware corporation (“One Stop” or “Employer”) and David Raun (“Mr. Raun” or “Executive”). RECITALS A. One Stop is a corporation doing business in the State of California. B. Both One Stop and Mr.

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing

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 15, 2020 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commi

OSS / One Stop Systems, Inc. / Cooper Steve D - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 1)* One Stop Systems, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 68247W109 (CUSIP Number) Steve D. Cooper 2235 Enterprise Street, Suite 110 Escondido, California 92029 (760) 745-9883 (Name, Addre

ONE STOP SYSTEMS, INC. Notice of Grant of Restricted Stock Unit

EX-99.4 Exhibit 4 ONE STOP SYSTEMS, INC. Notice of Grant of Restricted Stock Unit Steve Cooper (the “Grantee”) has been granted a restricted stock unit (the “RSU”) for shares of Common Stock of One Stop Systems, Inc. pursuant to the One Stop Systems, Inc. 2017 Equity Incentive Plan (the “Plan”), as follows: Date of RSU Grant: 2/13/2019 Number of RSU Shares: 30,000 Fair Market Price at Date of Gran

One Stop Systems Appoints David Raun as Interim President and CEO

EX-99.1 Exhibit 99.1 One Stop Systems Appoints David Raun as Interim President and CEO Escondido, CA – February 18, 2020 – One Stop Systems, Inc. (Nasdaq: OSS), the leading provider of specialized high performance computing solutions for mission critical edge applications, has appointed company director, David Raun, as interim president and CEO, succeeding Steve Cooper, who will continue as a memb

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): February 15, 2020 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commi

JOINT FILING UNDERTAKING

EX-99.1 Exhibit 1 JOINT FILING UNDERTAKING The undersigned, being authorized thereunto, hereby execute this agreement as an exhibit to this Schedule 13D to evidence the agreement of the below-named parties, in accordance with rules promulgated pursuant to the Securities Exchange Act of 1934, as amended, to file this Schedule jointly on behalf of each of such parties. Date: February 18, 2020 THE CO

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

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 23, 2019 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commi

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

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 4, 2019 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (C

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 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commis

OSS Reports Q3 2019 Revenue Up 55% to $14.9 Million

EX-99.1 Exhibit 99.1 OSS Reports Q3 2019 Revenue Up 55% to $14.9 Million ESCONDIDO, Calif., November 7, 2019 – One Stop Systems, Inc. (Nasdaq: OSS), a leader in specialized high-performance edge computing, reported results for the third quarter and nine months ended September 30, 2019. Financial Highlights • Revenue in Q3 increased 55% to a record $14.9 million. • For the first nine months of 2019

OSS / One Stop Systems, Inc. 10-Q - Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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, 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: 001-38371 One Stop Systems, Inc.

Regulation FD Disclosure, Termination of a Material Definitive Agreement, 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): August 26, 2019 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commiss

OSS Closes ATM Program; Raised $2.5 Million

EX-99.1 Exhibit 99.1 OSS Closes ATM Program; Raised $2.5 Million ESCONDIDO, Calif., – August 27, 2019 – One Stop Systems, Inc. (Nasdaq: OSS), has closed out its at-the-market (ATM) equity offering program after raising net proceeds of $2.5 million. “We are pleased to have completed our equity raise which further strengthens the cash position on our balance sheet,” said Steve Cooper, president and

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 8, 2019 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commissi

OSS Reports Q2 2019 Results; Revenue Up 153% to $14.9 Million

EX-99.1 Exhibit 99.1 OSS Reports Q2 2019 Results; Revenue Up 153% to $14.9 Million ESCONDIDO, Calif., August 8, 2019 – One Stop Systems, Inc. (Nasdaq: OSS), a leader in specialized high-performance edge computing, reported results for the second quarter ended June 30, 2019. Financial Highlights • Revenue in Q2 increased 153% to $14.9 million, with organic revenue growth of 70%. Q2 revenue included

Domestic Strategic Sourcing Agreement, effect as of August 2, 2019, by and between One Stop Systems, Inc., and Raytheon Company.

EX-10.1 Exhibit 10.1 Certain identified information has been omitted from this document because it is not material and would be competitively harmful if publicly disclosed, and has been marked with “[***]” to indicate where omissions have been made. Domestic Strategic Sourcing Agreement TABLE OF CONTENTS AN AGREEMENT BETWEEN RAYTHEON COMPANY AND ONE STOP SYSTEMS, INC. 1 PURPOSE OF AGREEMENT 1 ARTI

Regulation FD Disclosure, Entry into a Material Definitive Agreement, 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): August 2, 2019 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commissi

OSS Awarded $36 Million Contract to Provide Flash Storage Arrays for Military Radar Application

EX-99.1 Exhibit 99.1 OSS Awarded $36 Million Contract to Provide Flash Storage Arrays for Military Radar Application ESCONDIDO, Calif., August 8, 2019 – One Stop Systems, Inc. (Nasdaq: OSS), the leading provider of specialized high-performance computing solutions, has won a five-year sole source agreement valued at $36 million to provide flash storage arrays to a prime contractor for the U.S. Navy

Form of Warrant

Exhibit 10.3 WARRANT TO PURCHASE COMMON STOCK OF ONE STOP SYSTEMS, INC. TABLE OF CONTENTS 1. Definitions 1 1.1 Company. 1 1.2 Common Stock. 1 1.3 Securities Act. 1 1.4 Warrant Holder. 1 2. Registration Rights 1 3. Exercise 2 3.1 Subscription 2 3.2 Investor Certificate. 2 3.3 Partial Exercise. 2 3.4 Payment 2 3.5 Continuing Obligations. 2 4. Delivery of Stock Certificate 2 5. Stock Splits and Combi

Form of Secured Note

Exhibit 10.2 SENIOR SECURED Promissory Note By ONE STOP SYSTEMS, INC. (“Payor”) In Favor Of (“Payee”) , 20 SENIOR SECURED Promissory Note Payor: One Stop Systems, Inc. Payee: 2235 Enterprise St. #101 Escondido, CA 92029 Date of Note: Principal Amount: Interest Rate: Due Date: $ 9.5% PROMISE TO PAY. One Stop Systems, Inc., a Delaware corporation (“Payor”) promises to pay to (“Payee”), in lawful mon

Original Equipment Manufacturing and Supply Agreement, date as of July 1, 2019.

Exhibit 10.5 Certain identified information has been omitted from this document because it is not material and would be competitively harmful if publicly disclosed, and has been marked with “[***]” to indicate where omissions have been made. ORIGINAL EQUIPMENT MANUFACTURING AND SUPPLY AGREEMENT This Original Equipment Manufacturing and Supply Agreement (this “Agreement”) is made this 1 July 2019 (

Form of Note and Warrant Purchase Agreement

Exhibit 10.1 ONE STOP SYSTEMS, INC. NOTE AND WARRANT PURCHASE AGREEMENT THIS NOTE AND WARRANT PURCHASE AGREEMENT (this “Agreement”) is made as of , 2019, by and among One Stop Systems, Inc., a Delaware corporation (the “Company”), and the investors listed on Exhibit A hereto who become signatories to this Agreement (each an “Investor” and, collectively, the “Investors”). THE PARTIES HEREBY AGREE A

Form of Security Agreement

Exhibit 10.4 SECURITY AGREEMENT THIS SECURITY AGREEMENT (this “Agreement”) is made and entered into effective as of , (the “Effective Date”), by and among (i) ONE STOP SYSTEMS, INC., a Delaware corporation, (“Debtor”), having a mailing address at 2235 Enterprise Street, #101, Escondido, California 92029; (ii) each “Holder” who has executed a counterpart signature page to this Agreement (each, indi

OSS / One Stop Systems, Inc. 10-Q - Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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, 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: 001-38371 One Stop Systems, Inc.

Regulation FD Disclosure, Entry into a Material Definitive Agreement, 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): July 1, 2019 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission

OSS Signs Five Year $60 Million OEM Agreement with Disguise Systems for Media and Entertainment Servers

EX-99.1 Exhibit 99.1 OSS Signs Five Year $60 Million OEM Agreement with Disguise Systems for Media and Entertainment Servers ESCONDIDO, Calif. – July 3, 2019 – One Stop Systems, Inc. (Nasdaq: OSS), a leader in specialized high-performance edge computing, has signed an exclusive five-year OEM and supply agreement with Disguise Systems Limited for media and entertainment servers. The agreement has a

Entry into a Material Definitive Agreement, 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): June 26, 2019 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commissio

Equity Distribution Agreement dated June 26, 2019, by and between One Stop Systems, Inc. and Noble Life Science Partners a division of Noble Capital Markets, Inc.

EX-10.1 Exhibit 10.1 ONE STOP SYSTEMS, INC. $10,000,000 COMMON STOCK EQUITY DISTRIBUTION AGREEMENT June 26, 2019 Noble Capital Markets, Inc. 225 NE Mizner Boulevard, Suite 150 Boca Raton, Florida 33432 Ladies and Gentlemen: One Stop Systems, Inc., a Delaware corporation (the “Company”), confirms its agreement (this “Agreement”) with Noble Capital Markets, Inc., a Florida corporation (“Noble”), as

OSS Announces At-The-Market (ATM) Equity Offering Program

EX-99.1 Exhibit 99.1 OSS Announces At-The-Market (ATM) Equity Offering Program ESCONDIDO, Calif, – June 26, 2019 – One Stop Systems, Inc. (Nasdaq: OSS), a leader in specialized high-performance edge computing, announced today that it has filed a prospectus supplement under which it may issue and sell, from time to time, up to an aggregate of $10 million of its common stock under an “at-the-market”

$10,000,000 Common Stock

424B5 Table of Contents Filed pursuant to Rule 424(b)(5) Registration No. 333-231513 PROSPECTUS SUPPLEMENT (To Prospectus dated May 15, 2019) $10,000,000 Common Stock We have entered into an Equity Distribution Agreement with Noble Capital Markets, Inc., a Florida corporation (“Noble”) dated as of June 26, 2019 relating to our common stock, par value $0.0001 per share, offered by this prospectus s

OSS / One Stop Systems, Inc. CORRESP - -

CORRESP One Stop Systems, Inc. 2235 Enterprise Street #110 Escondido, CA 92029 June 17, 2019 VIA EDGAR Division of Corporation Finance U.S. Securities & Exchange Commission (the “Commission”) 100 F Street, N.E. Washington, D.C. 20549 Attention: Jan Woo Edwin Kim Re: One Stop Systems, Inc. Registration Statement on Form S-3 Filed May 15, 2019 File No. 333-231513 Ladies and Gentlemen: Pursuant to Ru

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): May 15, 2019 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission

OSS / One Stop Systems, Inc. S-3 S-3

S-3 Table of Contents As filed with the Securities and Exchange Commission on May 15, 2019 Registration No.

OSS Reports Q1 2019 Results: Revenue Up 41% to $10.1 Million

EX-99.1 Exhibit 99.1 OSS Reports Q1 2019 Results: Revenue Up 41% to $10.1 Million ESCONDIDO, Calif., May 9, 2019 – One Stop Systems, Inc. (Nasdaq: OSS), a leader in specialized high-performance computing, reports results for the first quarter 2019 and guidance for the second quarter of 2019. Financial & Operational Highlights • Revenue increased 41% to $10.1 million. Revenue was lower than expecte

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 9, 2019 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commission

Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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, 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: 001-38371 One Stop Systems, Inc.

Form of Binding Commitment Letter

Exhibit 10.1 Binding Commitment Letter March 20, 2019 The purpose of this letter is to memorialize in writing your binding commitment to make a loan to One Stop Systems, Inc., a Delaware corporation, (the “Company”), in a principal amount of at least $2,000,000 (the “Loan”), on the terms and conditions described in this letter agreement. By countersigning this letter agreement, you hereby agree as

OSS / One Stop Systems, Inc. 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 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)) ☒ Definitive Proxy State

OSS / One Stop Systems, Inc. / HIRSCHMAN ORIN - AMENDMENT TO FORM SC 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Amendment No. 2 Under the Securities Exchange Act of 1934 One Stop Systems Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 68247W109 (CUSIP Number) March 27, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule p

Entry into a Material Definitive Agreement

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 20, 2019 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commissi

Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 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 001-38371 One Stop System

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

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, 2019 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commi

ONE STOP SYSTEMS, INC. Notice of Grant of Restricted Stock Unit

EX-99.2 Exhibit 2 ONE STOP SYSTEMS, INC. Notice of Grant of Restricted Stock Unit Steve Cooper (the “Grantee”) has been granted a restricted stock unit (the “RSU”) for shares of Common Stock of One Stop Systems, Inc. pursuant to the One Stop Systems, Inc . 2017 Equity Incentive Plan (the “Plan”), as follows: Date of RSU Grant: 4/11/2018 Number of RSU Shares: 30,000 Fair Market Price at Date of Gra

OSS / One Stop Systems, Inc. / Cooper Steve D - SC 13D Activist Investment

SC 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. )* One Stop Systems, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 68247W109 (CUSIP Number) Steve D. Cooper 2235 Enterprise Street, Suite 110 Escondido, California 92029 (760) 745-9883 (Name, Address an

OSS / One Stop Systems, Inc. / Jones Randy G - SC 13D Activist Investment

SC 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. )* One Stop Systems, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 68247W109 (CUSIP Number) Randy Jones 2235 Enterprise Street, Suite 110 Escondido, California 92029 (760) 745-9883 (Name, Address and Te

ONE STOP SYSTEMS, INC. Notice of Grant of Restricted Stock Unit

EX-99.2 Exhibit 2 ONE STOP SYSTEMS, INC. Notice of Grant of Restricted Stock Unit Randy Jones (the “Grantee”) has been granted a restricted stock unit (the “RSU”) for shares of Common Stock of One Stop Systems, Inc. pursuant to the One Stop Systems, Inc. 2017 Equity Incentive Plan (the “Plan”), as follows: Date of RSU Grant: 4/11/2018 Number of RSU Shares: 7,500 Fair Market Price at Date of Grant:

OSS / One Stop Systems, Inc. / HIRSCHMAN ORIN - AMENDED SC 13G Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Amendment No. 1 Under the Securities Exchange Act of 1934 One Stop Systems Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 68247W109 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to

JOINT FILING UNDERTAKING

EX-99.1 Exhibit 1 JOINT FILING UNDERTAKING The undersigned, being authorized thereunto, hereby execute this agreement as an exhibit to this Schedule 13D to evidence the agreement of the below-named parties, in accordance with rules promulgated pursuant to the Securities Exchange Act of 1934, as amended, to file this Schedule jointly on behalf of each of such parties. Date: February 15, 2019 THE CO

OSS / One Stop Systems, Inc. / HIRSCHMAN ORIN - AMENDED SC 13G Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Amendment No. 1 Under the Securities Exchange Act of 1934 One Stop Systems Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 68247W109 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to

JOINT FILING UNDERTAKING

EX-99.1 Exhibit 1 JOINT FILING UNDERTAKING The undersigned, being authorized thereunto, hereby execute this agreement as an exhibit to this Schedule 13D to evidence the agreement of the below-named parties, in accordance with rules promulgated pursuant to the Securities Exchange Act of 1934, as amended, to file this Schedule jointly on behalf of each of such parties. Date: February 15, 2019 RANDY

OSS Appoints Kimberly Sentovich to Board of Directors

EX-99.1 Exhibit 99.1 OSS Appoints Kimberly Sentovich to Board of Directors ESCONDIDO, Calif. – February 1, 2019 – One Stop Systems, Inc. (Nasdaq: OSS), has appointed Kimberly Sentovich to its board of directors, effective immediately. Following her appointment, the board will be comprised of seven members with four serving as independent directors. Sentovich brings more than 30 years of operationa

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): January 31, 2019 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commis

Bressner Technology GmbH FINANCIAL STATEMENTS AND INDEPENDENT AUDITORS’ REPORT AS OF AND FOR THE YEARS ENDED DECEMBER 31, 2017 AND 2016 Bressner Technology GmbH

Exhibit 99.1 Bressner Technology GmbH FINANCIAL STATEMENTS AND INDEPENDENT AUDITORS’ REPORT AS OF AND FOR THE YEARS ENDED DECEMBER 31, 2017 AND 2016 Bressner Technology GmbH Table of Contents 1. Auditors Opinion 3 2. Balance Sheets according to local GAAP 5 3. Statements of Income according to local GAAP 6 4. Notes according to local GAAP 6 5. German GAAP / US-GAAP reconciliation of the balance sh

Bressner Technology GmbH FINANCIAL STATEMENTS AND INDEPENDENT ACCOUNTANT’S REVIEW REPORT AS OF SEPTEMBER 30, 2018 AND FOR THE NINE MONTH PERIODS ENDED SEPTEMBER 30, 2018 AND 2017 Bressner Technology GmbH

Exhibit 99.2 Bressner Technology GmbH FINANCIAL STATEMENTS AND INDEPENDENT ACCOUNTANT’S REVIEW REPORT AS OF SEPTEMBER 30, 2018 AND FOR THE NINE MONTH PERIODS ENDED SEPTEMBER 30, 2018 AND 2017 Bressner Technology GmbH Table of Contents 1. Accountant’s Review Report 3 2. Balance Sheet according to local GAAP (unaudited) 5 3. Statements of Income according to local GAAP (unaudited) 6 4. Notes accordi

One Stop Systems, Inc. UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Exhibit 99.3 One Stop Systems, Inc. UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS The following unaudited pro forma condensed consolidated financial statements give effect to the acquisition by One Stop Systems, GmbH (“OSS-GmbH”), of Bressner Technology GmbH, (“Bressner”) following the execution on October 31, 2018, of a Share Purchase Agreement (the “Agreement”) with Josef and C

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A 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 31, 2018 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commissi

Termination of a Material Definitive Agreement, Costs Associated with Exit or Disposal Activities

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): January 2, 2019 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commiss

One Stop Systems, Inc. UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

EX-99.3 Exhibit 99.3 One Stop Systems, Inc. UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS The following unaudited pro forma condensed consolidated financial statements give effect to the acquisition by One Stop Systems, Inc. (“OSS”), of Concept Development, Inc., (“CDI”) following the execution on August 22, 2018, of an Agreement and Plan of Merger and Reorganization (the “Agreem

Financial Statements and Exhibits

8-K/A No. 2 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A Amendment No. 2 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 31, 2018 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction

OSS Reports Record Q3 2018 Results, Revenue up 45%

EX-99.1 Exhibit 99.1 Press Release OSS Reports Record Q3 2018 Results, Revenue up 45% Escondido, Calif. – November 8, 2018 – OSS (NASDAQ: OSS), a leader in high-performance computing, reports results for the quarter ended September 30, 2018, provides guidance for Q4 of 2018 and full year 2019. Q3 Financial & Operational Summary • Third quarter record revenue of $9.6 million, up 45% from the year-a

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 8, 2018 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commis

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A 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 31, 2018 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commissio

CONCEPT DEVELOPMENT, INC. FINANCIAL STATEMENTS AND INDEPENDENT ACCOUNTANTS’ REVIEW REPORT AS OF AND FOR THE SIX MONTH PERIOD ENDED JUNE 30, 2018 CONCEPT DEVELOPMENT, INC. TABLE OF CONTENTS

Exhibit 99.2 CONCEPT DEVELOPMENT, INC. FINANCIAL STATEMENTS AND INDEPENDENT ACCOUNTANTS’ REVIEW REPORT AS OF AND FOR THE SIX MONTH PERIOD ENDED JUNE 30, 2018 CONCEPT DEVELOPMENT, INC. TABLE OF CONTENTS Page Independent Accountants’ Review Report Financial Statements: Balance Sheet 3 Statements of Income 4 Statement of Stockholder’s Equity 5 Statements of Cash Flows 6 Notes to Financial Statements

CONCEPT DEVELOPMENT, INC. FINANCIAL STATEMENTS AND INDEPENDENT AUDITORS’ REPORT AS OF AND FOR THE YEARS ENDED DECEMBER 31, 2017 AND 2016 CONCEPT DEVELOPMENT, INC. TABLE OF CONTENTS

Exhibit 99.1 CONCEPT DEVELOPMENT, INC. FINANCIAL STATEMENTS AND INDEPENDENT AUDITORS’ REPORT AS OF AND FOR THE YEARS ENDED DECEMBER 31, 2017 AND 2016 CONCEPT DEVELOPMENT, INC. TABLE OF CONTENTS Page Independent Auditors’ Report Financial Statements: Balance Sheets 3 Statements of Income 4 Statements of Stockholder’s Equity (Deficit) 5 Statements of Cash Flows 6 Notes to Financial Statements 7 Supp

OSS / One Stop Systems, Inc. 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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, 2018 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: 001-38371 One Stop Systems, Inc.

One Stop Systems, Inc. UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Exhibit 99.3 One Stop Systems, Inc. UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS The following unaudited pro forma condensed consolidated financial statements give effect to the acquisition by One Stop Systems, Inc. (“OSS”), of Concept Development, Inc., (“CDI”) following the execution on August 22, 2018, of an Agreement and Plan of Merger and Reorganization (the “Agreement”) wi

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets

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 31, 2018 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commis

Share Purchase Agreement, dated October 31, 2018, with Bressner Technology GmbH.

EX-2.1 Exhibit 2.1 SHARE PURCHASE AGREEMENT between Josef Bressner, Ligusterweg 8, 82194 Groebenzell, Germany - hereinafter referred to as “Seller 1” - and Claudia Bressner, Ligusterweg 8, 82194 Groebenzell, Germany - hereinafter referred to as “Seller 2” - - Seller 1 and Seller 2 together the “Sellers” or, individually, a “Seller” - and One Stop Systems GmbH, Industriestraße 51, 82194 Gröbenzell,

OSS Acquires Bressner Technology, Expands European Presence

EX-99.1 Exhibit 99.1 Press Release OSS Acquires Bressner Technology, Expands European Presence ESCONDIDO, California – November 6, 2018 – One Stop Systems, Inc. (OSS) (Nasdaq: OSS), through its wholly-owned subsidiary, OSS GmbH, has acquired Bressner Technology GmbH, a leading specialized high-performance computing supplier in Europe. Based in GRÖBENZELL, Germany near Munich, Bressner provides sta

OSS / One Stop Systems, Inc. S-8

S-8 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ONE STOP SYSTEMS, INC. (Exact name of registrant as specified in its charter) Delaware 33-0885351 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) 2235 Enterprise Street #110 Escondido, California 92029 (Addr

OSS / One Stop Systems, Inc. / Reardon James M - SC 13D Activist Investment

SC 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. )* One Stop Systems, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 68247W109 (CUSIP Number) James M. Reardon 2235 Enterprise Street #110 Escondido, California 92029 (877) 438-2724 (Name, Address and Tel

Piggyback Registration Rights Agreement, dated August 31, 2018.

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Agreement and Plan of Merger and Reorganization, dated August 22, 2018, with Concept Development Inc.

EX-2.1 Exhibit 2.1 EXECUTION VERSION AGREEMENT AND PLAN OF MERGER AND REORGANIZATION among ONE STOP SYSTEMS, INC. a Delaware corporation (“Parent”) and OSS ACQUISITION, INC. a California corporation (“Merger Sub 1”) and OSS MERGER, LLC a California limited liability company (“Merger Sub 2”) and CONCEPT DEVELOPMENT, INC. a California corporation (“Company”) and JAMES M. REARDON, an individual and t

One Stop Systems Closes Acquisition of Concept Development Expands Market Reach into In-flight Entertainment Market

EX-99.1 Exhibit 99.1 One Stop Systems Closes Acquisition of Concept Development Expands Market Reach into In-flight Entertainment Market Escondido, Calif. and Irvine, Calif., September 6, 2018 – One Stop Systems, Inc. (OSS), a leader in specialized high-performance computers, has completed the previously announced agreement to acquire Irvine California-based Concept Development, Inc. (CDI), which

Regulation FD Disclosure, Unregistered Sales of Equity Securities, Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets

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 31, 2018 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commiss

Regulation FD Disclosure, Entry into a Material Definitive Agreement, 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): August 22, 2018 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Commiss

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OSS Reports Second Quarter 2018 Results; Increases 2018 Guidance and Announces Acquisition of Concept Development

EX-99.1 Exhibit 99.1 OSS Reports Second Quarter 2018 Results; Increases 2018 Guidance and Announces Acquisition of Concept Development Escondido, CA – August 8, 2018 – OSS (NASDAQ: OSS), a leader in high-performance computing, reports results for the quarter ended June 30, 2018, provides guidance for Q3 and Q4 of 2018, and plans to acquire Irvine, California-based Concept Development, Inc. (CDI).

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): August 8, 2018 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Com

OSS / One Stop Systems, Inc. 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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, 2018 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: 001-38371 One Stop Systems, Inc.

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

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): July 30, 2018 ONE STOP SYSTEMS, INC. (Exact name of Registrant as specified in its charter) Delaware 001-38371 33-0885351 (State or Other Jurisdiction of Incorporation) (Comm

Seventh Amendment to Lease, dated as of July 24, 2018.

EX-10.1 Exhibit 10.1 SEVENTH AMENDMENT TO LEASE This Seventh Amendment to Lease (“Amendment”) is entered into, and dated for reference purposes, as of July 24, 2018 (the “Execution Date”) by and between PACIFICA ENCINITAS BEACH, LLC, a California limited liability company, PACIFICA REAL ESTATE V, LLC, a California limited company, SR32 SAN DIEGO PORTFOLIO, LLC, a California limited liability compa