AllianceBernstein (NYSE: ROCK) discloses 2.20M-share, 7.4% position in Gibraltar

Rhea-AI Filing Summary

AllianceBernstein L.P. filed an amendment to Schedule 13G disclosing 2,198,453 shares of Gibraltar Industries Inc. Common Stock. The filing states AllianceBernstein has sole dispositive power over 2,198,453 shares and sole voting power over 1,907,637 shares, representing 7.4% of the class. The filing lists the issuer CUSIP 374689107 and identifies the shares as held in client discretionary advisory accounts.

Insights

Institutional Ownership Analyst

Large discretionary position reported: 2,198,453 shares (7.4%) held in client accounts.

AllianceBernstein discloses a meaningful 7.4% beneficial stake in Gibraltar Industries with sole dispositive authority for 2,198,453 shares. The position is held in client discretionary advisory accounts, indicating AB acts as investment manager rather than principal owner.

Timing: the cover shows a 03/31/2026 reference and the filing was signed 05/15/2026. Future filings could show changes if client flows or rebalancing occur.

Compliance & Regulatory Specialist

Filing formatted as a Schedule 13G/A; ownership reported under passive/discretionary holdings rules.

The amendment structure and the disclosure that holdings are in client discretionary accounts align with Schedule 13G reporting for institutional investors. The filing notes AllianceBernstein is majority owned by EQH but operates under independent management per cited guidance.

Investors should note the filing documents voting and dispositive powers: 1,907,637 votes and 2,198,453 dispositive shares as stated.

Key Figures

Beneficial ownership: 2,198,453 shares Percent of class: 7.4% Sole voting power: 1,907,637 shares +3 more

6 metrics

Beneficial ownership 2,198,453 shares reported on Schedule 13G/A

Percent of class 7.4% percentage of common stock beneficially owned

Sole voting power 1,907,637 shares shares with sole power to vote

Sole dispositive power 2,198,453 shares shares with sole power to dispose

CUSIP 374689107 Gibraltar Industries Common Stock CUSIP

Filing signature date 05/15/2026 signed by Marcus Edwards

Key Terms

beneficially owned, sole dispositive power, Schedule 13G/A, client discretionary advisory accounts

4 terms

beneficially owned regulatory

"Amount beneficially owned: 2,198,453 shares acquired solely for investment purposes"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

sole dispositive power regulatory

"Sole Dispositive Power 2,198,453.00"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

Schedule 13G/A regulatory

"Amendment to Schedule 13G disclosing beneficial ownership position"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

client discretionary advisory accounts financial

"acquired solely for investment purposes on behalf of client discretionary investment advisory accounts"

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Gibraltar Industries Inc

(Name of Issuer)

Common Stock

(Title of Class of Securities)

374689107

(CUSIP Number)

03/31/2026

(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)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 374689107

1

Names of Reporting Persons

AllianceBernstein L.P.

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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,907,637.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 2,198,453.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,198,453.00

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)

7.4 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Gibraltar Industries Inc
(b)	Address of issuer's principal executive offices: 3556 LAKE SHORE ROAD,, P O BOX 2028,, BUFFALO,, NY, 14219-0228
Item 2.
(a)	Name of person filing: AllianceBernstein L.P. ("AllianceBernstein L.P.")
(b)	Address or principal business office or, if none, residence: 501 Commerce Street, Nashville, TN 37203 All media outlets, please contact Jennifer Will at AllianceBernstein (212-969-1157) with any questions. All other questions can be directed to Section13USFilings@alliancebernstein.com.
(c)	Citizenship: Delaware
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 374689107
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: 2,198,453 shares acquired solely for investment purposes on behalf of client discretionary investment advisory accounts.* *AllianceBernstein L.P. is a majority owned subsidiary of Equitable Holdings, Inc. ("EQH"). AllianceBernstein operates under independent management and makes independent decisions from EQH and its respective subsidiaries, and EQH calculates and reports beneficial ownership separately from AllianceBernstein pursuant to guidance provided by the Securities and Exchange Commission in Release Number 34-39538 (January 12, 1998).
(b)	Percent of class: 7.4 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 1,907,637
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 2,198,453
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
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.

AllianceBernstein L.P.

Signature:	Marcus Edwards
Name/Title:	AVP/ Senior Compliance Associate
Date:	05/15/2026

FAQ

What stake does AllianceBernstein report in Gibraltar Industries (ROCK)?

AllianceBernstein reports beneficial ownership of 2,198,453 shares, representing 7.4% of Gibraltar Industries' common stock. The filing states these shares are held in client discretionary advisory accounts and were reported on the Schedule 13G/A amendment.

How many votes does AllianceBernstein control in the filing?

The filing discloses sole voting power over 1,907,637 shares. It also reports no shared voting power, indicating AllianceBernstein exercises voting authority on those shares held in client discretionary accounts.

Does AllianceBernstein own the shares directly or on behalf of clients?

The filing indicates the shares are held on behalf of client discretionary investment advisory accounts, meaning AllianceBernstein acts as investment manager with dispositive authority rather than holding the shares as principal owner.

When was the Schedule 13G/A amendment signed?

The Schedule 13G/A amendment is signed by Marcus Edwards on 05/15/2026. The cover references 03/31/2026 in the header, which appears as the reporting date in the filing excerpt.