Statement of Changes in Beneficial Ownership (4)

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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3235-0287

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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 * Frost James A	2. Issuer Name and Ticker or Trading Symbol TUTOR PERINI CORP [ TPC ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director                    _____ 10% Owner __X__ Officer (give title below)    _____ Other (specify below) President & COO
(Last)          (First)          (Middle) C/O TUTOR PERINI CORPORATION, 15901 OLDEN STREET	3. Date of Earliest Transaction (MM/DD/YYYY) 5/23/2021
(Street) SYLMAR, CA 91342 (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	5/23/2021		M		50000	A	(1)	627276	D
Common Stock	5/23/2021		F		19675	D	$15.83	607601	D
Common Stock	5/23/2021		G	V	30325	D	$0	577276	D
Common Stock	5/23/2021		G	V	30325	A	$0	30325	I	By Frost Family Trust Dated September 23, 2004
Common Stock	5/25/2021		G	V	277406	D	$0	299870	D
Common Stock	5/25/2021		G	V	277406	A	$0	307731	I	By Frost Family Trust Dated September 23, 2004

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	(1)	5/23/2021		M			50000	(2)	(2)	Common Stock	50000	$0	0	D

Explanation of Responses:
(1)	The restricted stock units (RSUs) convert into common stock of Tutor Perini Corporation on a 1-for-1 basis.
(2)	On May 23, 2018, the reporting person was granted 50,000 RSUs that vested on May 23, 2021, contingent upon the reporting person's continued employment through this date.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Frost James A C/O TUTOR PERINI CORPORATION 15901 OLDEN STREET SYLMAR, CA 91342	X		President & COO

Signatures
/s/ Anthony C. Fiore, Attorney-in-Fact		5/25/2021
**Signature of Reporting Person		Date