Sterling Infrastructure (STRL) CEO sells 50,000 shares in pre-set plan

Rhea-AI Filing Summary

Sterling Infrastructure Chief Executive Officer Joseph A. Cutillo sold 50,000 shares of common stock in an open-market transaction on April 23, 2026. The shares were sold at an average price of $497.57 per share, in multiple trades within a disclosed price range.

The transaction was carried out under a pre-arranged Rule 10b5-1 trading plan adopted by Cutillo. After this sale, he continues to hold 290,593 shares directly, including 20,754 shares subject to transfer restrictions and potential forfeiture.

Insights

Equity compensation and insider-trading analyst

Sterling’s CEO executed a pre-planned sale while retaining a substantial stake.

The filing shows CEO Joseph A. Cutillo sold 50,000 common shares at an average of $497.57 per share in an open-market transaction on April 23, 2026. This is a discretionary sale, not an option exercise, and reflects a sizable transaction in dollar terms.

Importantly, a footnote states the sale was made under a Rule 10b5-1 trading plan adopted on December 8, 2025, indicating it was pre-scheduled rather than timed opportunistically. After the sale, Cutillo still directly owns 290,593 shares, including 20,754 restricted shares, so he maintains a substantial ongoing equity position.

Insider Trade Summary 10b5-1

Net Seller: 50,000 shares ($24,878,635)

Net Sell 1 txn

Insider CUTILLO JOSEPH A

Role Chief Executive Officer

Sold 50,000 shs ($24.88M)

Type	Security	Shares	Price	Value
Sale	Common Stock	50,000	$497.5727	$24.88M

Holdings After Transaction: Common Stock — 290,593 shares (Direct, null)

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 December 8, 2025. Transaction executed in multiple trades at prices ranging from $495.00 to $501.68 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, 20,754 shares are subject to restrictions on their sale or other transfer and to forfeiture under certain circumstances.

Key Figures

Shares sold: 50,000 shares Average sale price: $497.57 per share Post-transaction holdings: 290,593 shares +2 more

5 metrics

Shares sold 50,000 shares Open-market sale on April 23, 2026

Average sale price $497.57 per share Weighted average across multiple trades

Post-transaction holdings 290,593 shares Shares directly owned after the sale

Restricted shares held 20,754 shares Subject to restrictions and possible forfeiture

Trade price range $495.00–$501.68 per share Range of prices for individual trades

Key Terms

Rule 10b5-1 trading plan, open-market sale, restricted shares, forfeiture, +1 more

5 terms

Rule 10b5-1 trading plan regulatory

"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

open-market sale financial

"transaction_action: open-market sale"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

restricted shares financial

"20,754 shares are subject to restrictions on their sale or other transfer"

Restricted shares are company stock that cannot be sold or transferred immediately because they are subject to legal or contractual limits, such as a required holding period or performance conditions. They matter to investors because these locked-up shares can affect a company’s available stock for trading, future dilution, and insider incentives—imagine a gift that can’t be cashed until certain conditions are met, which changes when and how much supply can suddenly enter the market.

forfeiture financial

"subject to restrictions on their sale or other transfer and to forfeiture under certain circumstances"

weighted average sale price financial

"The price reported in column 4 above reflects the average sale price per share"

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^*

CUTILLO JOSEPH A

(Last) (First) (Middle)

1800 HUGHES LANDING BLVD.

(Street)

THE WOODLANDS TEXAS 77380

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/23/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	04/23/2026		S		50,000(1)	D	$497.5727(2)	290,593(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 December 8, 2025.

2. Transaction executed in multiple trades at prices ranging from $495.00 to $501.68 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, 20,754 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)	04/24/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What did STRL’s CEO Joseph A. Cutillo do in this Form 4 filing?

Joseph A. Cutillo, CEO of Sterling Infrastructure (STRL), reported selling 50,000 shares of common stock. The sale was an open-market transaction under a pre-arranged Rule 10b5-1 trading plan and leaves him with a significant remaining shareholding.

How many Sterling Infrastructure (STRL) shares did the CEO sell and at what price?

The CEO sold 50,000 shares of Sterling Infrastructure common stock at an average price of about $497.57 per share. A footnote explains trades occurred between $495.00 and $501.68, with the reported figure reflecting the weighted average sale price.

How many STRL shares does the CEO still own after this transaction?

After the reported sale, CEO Joseph A. Cutillo directly owns 290,593 Sterling Infrastructure shares. This total includes 20,754 shares that are restricted, meaning they are subject to transfer limitations and possible forfeiture under certain conditions.

Was the STRL CEO’s 50,000-share sale part of a Rule 10b5-1 plan?

Yes. A footnote states the sales were executed pursuant to a Rule 10b5-1 trading plan adopted on December 8, 2025. Such plans allow insiders to pre-schedule trades, reducing the appearance that they are timing the market based on nonpublic information.

What price range did STRL shares trade in for the CEO’s reported sales?

The transaction was executed in multiple trades at prices ranging from $495.00 to $501.68 per share. The Form 4 reports an average price of $497.57, and the CEO has undertaken to provide detailed trade-by-trade prices upon request.