FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
RAUN DAVID
  2. Issuer Name and Ticker or Trading Symbol
ONE STOP SYSTEMS, INC. [OSS]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
President and CEO
(Last)
(First)
(Middle)
2235 ENTERPRISE STREET #110
3. Date of Earliest Transaction (Month/Day/Year)
06/24/2020
(Street)

ESCONDIDO, CA 92029
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Restricted Stock Unit (1) 06/24/2020   A   412,125     (2)   (2) Common Stock 412,125 $ 0 412,125 D  
Employee Stock Option (right to buy) $ 2.14 06/24/2020   A   412,125     (3) 06/23/2030 Common Stock 412,125 $ 0 412,125 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
RAUN DAVID
2235 ENTERPRISE STREET #110
ESCONDIDO, CA 92029
  X     President and CEO  

Signatures

 /s/ David Raun   06/25/2020
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Each Restricted Stock Unit represents a contingent right to receive one share of OSS common stock. The closing price of OSS on June 23, 2020 was $2.14.
(2) The Restricted Stock Units (RSUs) shall vest over three (3) years, with 1/3 of the RSUs vesting following the one-year anniversary of the date of grant, and the remaining RSUs shall vest in four (4) equal installments, commencing six (6) months after the one-year anniversary of the date of grant and every six (6) months thereafter until fully vested, provided that grantee is still employed on each such vesting date.
(3) The options shall vest based on increases of the Company's stock price during six-month periods, which periods end at the end of the second and fourth fiscal quarters. After the Company reports second and fourth fiscal quarter earnings, 29,438 options shall vest if the Company's stock price has increased $0.25 per share over the price at the end of the prior 6-month period. If the stock price increases more or less than $0.25 per share, the number of options that shall vest shall be proportionate to the stock price increase to $0.25. The stock price on the date of grant is the floor for the initial period. The price at the end of each 6-month period (which shall be used as the floor for the subsequent 6-month period) shall be determined using ten-day trailing volume weighted average price (VWAP) after reporting second and fourth fiscal quarter earnings.

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