[SCHEDULE 13G/A] ARMSTRONG WORLD INDUSTRIES INC SEC Filing

Rhea-AI Filing Summary

The London Company filed Amendment No. 5 to Schedule 13G reporting beneficial ownership of 2,135,597 shares of Armstrong World Industries (AWI), representing 4.94% of the common stock.

The firm reports sole voting power over 2,135,597 shares, sole dispositive power over 2,065,166 shares, and shared dispositive power over 3,733 shares, with no shared voting power. The date of event triggering this filing is 09/30/2025. The filer is classified as an investment adviser (IA) and certifies the shares were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control, subject to the stated nomination exception.

Insights

Equity ownership & governance analyst

Ownership at 4.94% reported on a passive 13G/A basis.

The London Company discloses beneficial ownership of 4.94% of Armstrong World Industries on Schedule 13G/A, indicating a passive filing status. The position totals 2,135,597 shares, with sole voting power matching the full amount.

The filing lists sole dispositive power over 2,065,166 shares and shared dispositive power over 3,733, with no shared voting power. The certification states the holdings are in the ordinary course and not aimed at influencing control.

The effective date is 09/30/2025. Actual market impact depends on holder decisions, but a 13G/A at under 5% is typically administrative. Subsequent filings may provide updates if ownership changes materially.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 5)

ARMSTRONG WORLD INDUSTRIES INC

(Name of Issuer)

Common Stock, with no par value

(Title of Class of Securities)

042384107

(CUSIP Number)

09/30/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 042384107

1

Names of Reporting Persons

The London Company

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

VIRGINIA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 2,135,597.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 2,065,166.00
8	Shared Dispositive Power 3,733.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,135,597.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

4.94 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: ARMSTRONG WORLD INDUSTRIES INC
(b)	Address of issuer's principal executive offices: 2500 COLUMBIA AVE, LANCASTER, PA, 17603
Item 2.
(a)	Name of person filing: The London Company
(b)	Address or principal business office or, if none, residence: 1800 Bayberry Court, Suite 301, Richmond, Virginia 23226
(c)	Citizenship: Virginia
(d)	Title of class of securities: Common Stock, with no par value
(e)	CUSIP No.: 042384107
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 2135597
(b)	Percent of class: 4.94 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 2135597
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 2065166
	(iv) Shared power to dispose or to direct the disposition of: 3733
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

The London Company

Signature:	/s/ Andrew J. Wetzel
Name/Title:	Andrew J. Wetzel, Chief Compliance Officer
Date:	11/14/2025