Sterling Infrastructure (STRL) director sells 1,260 shares under 10b5-1 plan

Rhea-AI Filing Summary

Sterling Infrastructure, Inc. director Wilson Dwayne Andree reported an open-market sale of 1,260 shares of common stock. The shares were sold at an average price of about $405.95 per share, and the transaction was executed under a pre-arranged Rule 10b5-1 trading plan adopted on November 21, 2025.

After this sale, he directly holds 12,289 shares of Sterling Infrastructure common stock, of which 751 shares are still subject to sale restrictions and potential forfeiture under certain conditions. The sale price reflects multiple trades between $401.30 and $410.43 per share.

Insider Trade Summary 10b5-1

Net Seller: 1,260 shares ($511,496)

Net Sell 1 txn

Insider Wilson Dwayne Andree

Role Director

Sold 1,260 shs ($511K)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,260	$405.9496	$511K

Holdings After Transaction: Common Stock — 12,289 shares (Direct)

Footnotes (1)

1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 21, 2025. Transaction executed in multiple trades at prices ranging from $401.30 to $410.43 per share, inclusive. The price reported in column 4 above reflects the average sale price per share. The Reporting Person hereby undertakes to provide the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote. Of these shares, 751 shares are subject to restrictions on their sale or other transfer and to forfeiture under certain circumstances.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Wilson Dwayne Andree

(Last) (First) (Middle)

1800 HUGHES LANDING BLVD

SUITE 250

(Street)

THE WOODLANDS TX 77380

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
STERLING INFRASTRUCTURE, INC. [ STRL ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
03/12/2026

4. If Amendment, Date of 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

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
Common Stock	03/12/2026		S		1,260(1)	D	$405.9496(2)	12,289(3)	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 (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 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: 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

Explanation of Responses:

1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 21, 2025.

2. Transaction executed in multiple trades at prices ranging from $401.30 to $410.43 per share, inclusive. The price reported in column 4 above reflects the average sale price per share. The Reporting Person hereby undertakes to provide the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.

3. Of these shares, 751 shares are subject to restrictions on their sale or other transfer and to forfeiture under certain circumstances.

Remarks:

	Mark D. Wolf (Under a Power of Attorney)	03/16/2026
	** Signature of Reporting Person	Date
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).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did STRL director Wilson Dwayne Andree report?

Wilson Dwayne Andree reported an open-market sale of 1,260 shares of Sterling Infrastructure common stock. The transaction was disclosed on a Form 4 and reflects routine insider trading activity recorded for regulatory transparency.

At what price did the STRL director sell his Sterling Infrastructure shares?

The director sold 1,260 Sterling Infrastructure shares at an average price of about $405.95 per share. The trades were executed in multiple transactions between $401.30 and $410.43, with the reported figure representing the volume-weighted average sale price.

How many Sterling Infrastructure (STRL) shares does the director still own after the sale?

Following the reported transaction, the director directly owns 12,289 shares of Sterling Infrastructure common stock. This remaining stake includes 751 shares that are subject to restrictions on sale or transfer and may be forfeited under certain circumstances described in the award terms.

Was the STRL insider stock sale made under a Rule 10b5-1 trading plan?

Yes, the sale was carried out under a Rule 10b5-1 trading plan adopted by the reporting person on November 21, 2025. Such pre-arranged plans schedule trades in advance, helping separate routine portfolio management from discretionary timing decisions.

What does the price range disclosed for the STRL insider sale mean for investors?

The filing notes that trades occurred between $401.30 and $410.43 per share, with $405.95 as the average. This shows the market range in which liquidity was available, and the insider has committed to provide full trade breakdowns upon request to regulators or shareholders.

Are any of the Sterling Infrastructure shares held by the STRL director restricted?

Yes, of the 12,289 shares held after the transaction, 751 are subject to restrictions on sale or transfer and possible forfeiture. These typically arise from equity awards that vest over time or depend on specific performance or service conditions being satisfied.