Sec Form 4 Filing - SMALLEY GARY G. @ TUTOR PERINI CORP - 2023-01-01

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 Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person SMALLEY GARY G. 2. Issuer Name and Ticker or Trading Symbol TUTOR PERINI CORP [ TPC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) CEO and President (Last) (First) (Middle) C/O TUTOR PERINI CORPORATION, 15901 OLDEN STREET 3. Date of Earliest Transaction (MM/DD/YY) 01/01/2023 (Street) SYLMAR, CA91342 4. If Amendment, Date Original Filed (MM/DD/YY) 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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 Common Stock 03/13/2025 M 57,349 A 170,424 D Common Stock 03/13/2025 D( 1 ) 57,349 D $ 24.65 113,075 D

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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 Phantom Stock Units ( 1 ) 03/13/2025 M 57,349 ( 1 ) ( 1 ) Common Stock 57,349 $ 0 114,699 D Phantom Stock Units ( 2 ) 03/12/2025 A 77,754 ( 2 ) ( 2 ) Common Stock 77,754 $ 0 77,754 D Cash-Settled Performance Stock Units ( 3 ) 03/13/2024( 3 ) A 172,048 ( 3 ) ( 3 ) Common Stock 172,048 $ 0 172,048 D Cash-Settled Performance Stock Units ( 4 ) 01/01/2023( 4 ) A 238,727 ( 4 ) ( 4 ) Common Stock 238,727 $ 0 238,727 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other SMALLEY GARY G. C/O TUTOR PERINI CORPORATION 15901 OLDEN STREET SYLMAR, CA91342 CEO and President Signatures /s/ Ifigenia Protopappas, Attorney-in-Fact 03/14/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On March 13, 2024, the reporting person was granted 172,048 cash-settled phantom stock units, of which 57,349 vest on each of March 13, 2025 and 2026, and 57,350 vest on March 13, 2027, contingent upon the reporting person's continued employment through each applicable vesting date. These phantom stock units are considered derivative securities settled in cash at a value equal to the number of units vested multiplied by the closing price per share of common stock of Tutor Perini Corporation (Issuer) on the applicable vesting date. The reporting person did not purchase or sell any shares of common stock in the settlement of this award, however, the transaction is required to be reported as an acquisition and disposition back to the Issuer under SEC reporting principles. ( 2 )On March 12, 2025, the reporting person was granted 77,754 cash-settled phantom stock units, of which 25,918 vest on each of March 12, 2026, 2027 and 2028, contingent upon the reporting person's continued employment through each applicable vesting date. These phantom stock units are considered derivative securities settled in cash at a value equal to the number of units vested multiplied by the closing price per share of common stock of Tutor Perini Corporation (Issuer) on the applicable vesting date. ( 3 )Reflects the target number (Target Award) of cash-settled performance stock units (CPSUs) granted on March 13, 2024, which are scheduled to vest on December 31, 2026 based upon achievement of certain annualized stock price growth goals over a three-year performance period, with vesting ranging from 0% to 250% of the Target Award. The cash settlement amount will equal the number of shares that vest multiplied by the then fair market value of the shares. Due to an administrative error by the Company, the report for this award was filed late. The March 13, 2024 award was granted when the reporting person was President. ( 4 )Reflects the target number (Target Award) of cash-settled performance stock units (CPSUs) granted on January 1, 2023, which are scheduled to vest on December 31, 2025 based upon achievement of certain annualized stock price growth goals over a three-year performance period, with vesting ranging from 0% to 200% of the Target Award. The cash settlement amount will equal the number of shares that vest multiplied by the then fair market value of the shares. Due to an administrative error by the Company, the report for this award was filed late. The January 1, 2023 award was granted when the reporting person was Chief Financial Officer.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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