UBFO United Security Bancshares

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                                                                                   
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940                       

1. Name and Address of Reporting Person * EYTCHESON DAVID L	2. Issuer Name and Ticker or Trading Symbol UNITED SECURITY BANCSHARES [ UBFO ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director                    _____ 10% Owner __X__ Officer (give title below)    _____ Other (specify below) SVP & COO
(Last)          (First)          (Middle) 2126 INYO STREET	3. Date of Earliest Transaction (MM/DD/YYYY) 12/31/2020
(Street) FRESNO, CA 93721 (City)        (State)        (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. 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
Common Stock	12/31/2020		M		5834	A	(1)	162490	D (3)
Common Stock	12/31/2020		J		0 (4)	A(4)	(4)	106318 (4)	I (4)	401(k) (4)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. 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		7. Title and Amount of Securities Underlying Derivative Security (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 Units	$7.05 (2)	12/31/2020		M			5834	(1)	(1)	Common Stock	5834	$0	0	D

Explanation of Responses:
(1)	Result of final vesting of restricted stock units (RSUs) granted February 27,2018 that vested December 31, 2020 (3,334 shares), and full vesting of restricted stock units (RSUs) granted February 25, 2020 that vested December 31, 2020 (2,500 shares).
(2)	Represents the market closing price on December 31, 2020.
(3)	Shares held in JT Ten by Mr. Eytcheson and his spouse.
(4)	Shares held in 401(k) where Mr. Eytcheson is the owner. Provided for disclosure purposes only.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
EYTCHESON DAVID L 2126 INYO STREET FRESNO, CA 93721			SVP & COO

Signatures
/s/ David L Eytcheson		12/31/2020
**Signature of Reporting Person		Date