Armstrong World (NYSE: AWI) CEO reports RSU vesting and tax-withheld shares

Rhea-AI Filing Summary

Armstrong World Industries CEO Victor Grizzle reported equity award activity and related tax withholding. On February 27, 2026, 25,744 restricted stock units converted into the same number of common shares at a derivative price of $0. At a common stock price of $173.50 per share, 10,337 shares were withheld to cover tax obligations on vesting, leaving Grizzle with 409,385 common shares directly owned.

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

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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^*

Grizzle Victor

(Last) (First) (Middle)

C/O ARMSTRONG WORLD INDUSTRIES, INC.

2500 COLUMBIA AVENUE

(Street)

LANCASTER PA 17603

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ARMSTRONG WORLD INDUSTRIES INC [ AWI ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
02/27/2026

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	02/27/2026		M		25,744	A	$173.5(1)	419,722	D
Common Stock	02/27/2026		F		10,337(2)	D	$173.5	409,385	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
Restricted Stock Units	(1)	02/27/2026		M			25,744	(3)	(3)	Common Stock	25,744	(4)	0	D

Explanation of Responses:

1. Restricted Stock Units convert into common stock on a one-for-one basis.

2. Represents the number of shares withheld by the Issuer to satisfy the Reporting Person's tax obligations incurred upon the vesting of certain restricted stock units granted to the Reporting Person under the 2022 Equity and Cash Incentive Plan.

3. On March 1, 2023, the Reporting Person was granted 25,744 Restricted Stock Units, which vest on the third anniversary of the grant (contingent upon the Reporting Person's employment with the Issuer on the scheduled vesting date, except as provided for under the Issuer's 2022 Equity and Cash Incentive Plan).

4. Price of Derivative Security is $0.

	/s/ Alan M. Kidd, Attorney-in-fact	03/02/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transactions did AWI CEO Victor Grizzle report on this Form 4?

Victor Grizzle reported the vesting and conversion of 25,744 restricted stock units into common stock, plus a related tax-withholding disposition of 10,337 common shares at $173.50 per share, all dated February 27, 2026.

How many Armstrong World Industries (AWI) shares does Victor Grizzle own after this Form 4?

After the RSU conversion and tax withholding, Victor Grizzle directly owns 409,385 shares of Armstrong World Industries common stock, according to the Form 4’s post-transaction ownership figure reported for February 27, 2026.

Were Victor Grizzle’s AWI transactions open-market buys or sells?

The transactions were not open-market buys or sells. They reflect an exercise and conversion of 25,744 restricted stock units into common stock and a tax-withholding disposition of 10,337 shares, both reported using codes “M” and “F.”

What do the restricted stock unit footnotes in Victor Grizzle’s AWI filing explain?

The footnotes explain that each restricted stock unit converts one-for-one into common stock, the derivative security price is $0, and the withheld 10,337 shares satisfy tax obligations from vesting of RSUs granted on March 1, 2023 under the 2022 plan.

When were the restricted stock units in Victor Grizzle’s AWI Form 4 originally granted?

The 25,744 restricted stock units were granted on March 1, 2023. They vest on the third anniversary of the grant, contingent on continued employment, under Armstrong World Industries’ 2022 Equity and Cash Incentive Plan, as described in the Form 4 footnotes.