One Stop Systems Investor Presentation — June 2021

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Corporate Presentation June 2021onestopsystems.com

N A S D A Q : O S SImportant Disclaimers & Cautions Regarding

Forward -Looking Statements

2One Stop Systems cautions you that statements in this presentation that are not a description of historical facts are forward -looking statements. These

statements are based on the company's current beliefs and expectations. The inclusion of forward -looking statements should not b e regarded as a

representation by One Stop Systems or its partners that any of our plans or expectations will be achieved, including but not limited to our management’s

ability to increase the company’s market position or revenue. Actual results may differ from those set forth in this presenta tion due to the risk and

uncertainties inherent in our business, including risks described in our prior press releases and in our filings with the Sec urities and Exchange Commission

(SEC), including under the heading "Risk Factors" in our Annual Report on Form 10 -K and any subsequent filings with the SEC.

You are cautioned not to place undue reliance on these forward -looking statements, which speak only as of the date hereof, and w e undertake no obligation

to revise or update this presentation to reflect events or circumstances after the date hereof. All forward -looking statements a re qualified in their entirety

by this cautionary statement, which is made under the safe harbor provisions of the Private Securities Litigation Reform Act of 1995.

This presentation contains estimates and statistical data that we obtained from industry publications and reports. We have no t independently verified their

data, and we do not guarantee the accuracy and completeness of this information. You are cautioned not to give undue weight t o such estimates, and the

projections, assumptions and estimates of the future performance of the markets in which we operate, which are necessarily su bject to a high degree of

uncertainty and risk. This presentation shall not constitute an offer to sell or the solicitation of an offer to buy any secu rities, nor shall there be any offer or

sale of any securities, in any state or jurisdiction in which the offer, solicitation, or sale of securities would be unlawfu l. Some images may be stock photos.

© One Stop Systems, Inc. 2021 & 2020. All Rights Reserved. “AI on the Fly” is a registered trademark of One Stop Systems, Inc. 060321John Morrison

Chief Financial Officer

30 years experience in public accounting, and all aspects of financial

reporting and financing.

Began career with 15 years at PricewaterhouseCoopers in both the U.S.

President & CEO, Director