Arcosa's Reid S. Essl returns 132,171 shares in merger

The Group President's reported share disposition carried a $150.00-per-share cash payment, plus any accrued but unpaid dividend equivalents on awards.

Rhea-AI Filing Summary

Arcosa, Inc. reported that Group President Reid S. Essl had 38,907 shares acquired through the vesting of restricted stock units subject to performance criteria on October 23, 2026. He also returned 132,171 shares to the issuer under the Agreement and Plan of Merger dated June 21, 2026, in exchange for a cash payment of $150.00 per share of common stock and $150.00 per share underlying applicable restricted stock and restricted stock units, plus any accrued but unpaid dividend equivalents on those awards.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Essl Reid S

Role Group President

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1	38,907	$0.00	$0.00
Disposition	Common Stock F2	132,171	$150.00	$19.83M

Holdings After Transaction: Common Stock — 0 shares (Direct)

Footnotes (2)

1. F1. Represents the vesting of restricted stock units subject to performance criteria pursuant to the terms of the Agreement and Plan of Merger, dated June 21, 2026, by and among CRH Americas, Inc., Neon Merger Sub, Inc., and Arcosa, Inc. (the "Merger Agreement").
2. F2. Disposed of pursuant to the Merger Agreement in exchange for a cash payment of (i) $150.00 per share of common stock and (ii) $150.00 per share of common stock underlying awards of restricted stock and restricted stock units, as applicable, plus any accrued but unpaid dividend equivalents in respect of such awards.

Key Figures

Shares acquired through RSU vesting: 38,907 shares Shares returned to issuer: 132,171 shares Cash payment per share: $150.00 per share

3 metrics

Shares acquired through RSU vesting 38,907 shares October 23, 2026; subject to performance criteria

Shares returned to issuer 132,171 shares October 23, 2026

Cash payment per share $150.00 per share For common stock and applicable shares underlying restricted stock and restricted stock units

Key Terms

restricted stock units, performance criteria, dividend equivalents, Agreement and Plan of Merger

4 terms

restricted stock units financial

"vesting of restricted stock units subject to performance criteria"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

performance criteria financial

"restricted stock units subject to performance criteria"

dividend equivalents financial

"accrued but unpaid dividend equivalents"

Payments tied to employee or contractor equity awards that mirror the cash dividends paid on the company’s stock; they give the holder the same economic benefit as owning the shares without transferring actual shares—often paid in cash or additional award units when the award becomes payable. Investors care because these payments affect a company’s compensation costs, cash flow and potential share dilution, and they signal how management is being rewarded and aligned with shareholders.

Agreement and Plan of Merger technical

"terms of the Agreement and Plan of Merger"

An Agreement and Plan of Merger is a formal document where two companies agree to combine into one, outlining how the process will happen. It’s like a step-by-step plan for merging, and it matters because it shows both sides have agreed on the details before the official transition takes place.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many ACA shares did Arcosa's Group President return to the issuer?

Reid S. Essl, Group President of Arcosa, Inc., returned 132,171 shares to the issuer on October 23, 2026. The merger agreement provided for a cash payment of $150.00 per share of common stock and $150.00 per share underlying applicable restricted stock and restricted stock units, plus any accrued but unpaid dividend equivalents on those awards.

How many ACA shares were acquired through RSU vesting?

On October 23, 2026, 38,907 shares were reported as acquired through vesting of restricted stock units subject to performance criteria. The vesting was pursuant to the terms of the Agreement and Plan of Merger dated June 21, 2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 10/23/2026 - 04:57 PM EDT Accepted by SEC EDGAR 10/23/2026 - 04:45 PM EDT Learn about SEC filing dates

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

X

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

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^*

Essl Reid S

(Last) (First) (Middle)

500 NORTH AKARD ST, SUITE 400

(Street)

DALLAS TEXAS 75201

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Arcosa, Inc. [ ACA ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/23/2026

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	10/23/2026		A		38,907	A	$0(1)	132,171	D
Common Stock	10/23/2026		D		132,171	D	$150(2)	0	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. Represents the vesting of restricted stock units subject to performance criteria pursuant to the terms of the Agreement and Plan of Merger, dated June 21, 2026, by and among CRH Americas, Inc., Neon Merger Sub, Inc., and Arcosa, Inc. (the "Merger Agreement").

2. Disposed of pursuant to the Merger Agreement in exchange for a cash payment of (i) $150.00 per share of common stock and (ii) $150.00 per share of common stock underlying awards of restricted stock and restricted stock units, as applicable, plus any accrued but unpaid dividend equivalents in respect of such awards.

Remarks:

	/s/ Mark Elmore, by Power of Attorney	10/23/2026
	** 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)