Gibraltar CEO withholds 5,872 shares for taxes

Gibraltar Industries President and CEO William T. Bosway reported a tax-withholding disposition of 5,872 shares of common stock at $45.48 per share.

Accepted by SEC EDGAR 03/03/2026 - 02:07 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Gibraltar Industries President and CEO William T. Bosway reported a tax-withholding disposition of 5,872 shares of common stock at $45.48 per share. After this transaction, he directly holds 227,765 common shares. He also holds 43,981.51 and 69,271.42 restricted stock units under the 2018 Management Stock Purchase Plan, which are ultimately settled in cash based on the company’s share value.

Insider Trade Summary

Exercise Price or Tax Liability: 5,872 shares

Exercise Price or Tax Liability 1 txn

Insider Bosway William T

Role President and CEO

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	5,872	$45.48	$267K
Holding	Restricted Stock Unit (2018 MSPP Match)	--	--	--
Holding	Restricted Stock Unit (2018 MSPP)	--	--	--

Holdings After Transaction: Common Stock — 227,765 shares (Direct); Restricted Stock Unit (2018 MSPP Match) — 43,981.51 contracts (Direct); Restricted Stock Unit (2018 MSPP) — 69,271.42 contracts (Direct)

Holdings Before and After: Common Stock, 233,637 to 227,765 shares (Direct)

Footnotes (4)

1. F1. Represents matching restricted stock units allocated to the Reporting Person with respect to the Reporting Person's deferral of a portion of their annual base salary and annual cash incentive compensation pursuant to the Company's 2018 Management Stock Purchase Plan.
2. F2. Restricted stock units are forfeited if Reporting Person's service as an officer of the Company is terminated prior to the fifth (5th) anniversary of the Reporting Person's vesting commencement date. If service as an officer continues beyond the fifth (5th) anniversary of the Reporting Person's vesting commencement date, restricted stock units are payable solely in cash in one lump sum payment or in five (5) or ten (10) consecutive, substantially equal annual installments, whichever distribution form is elected by the Reporting Person, beginning six (6) months following termination of service. Each restricted stock unit is converted to cash in an amount equal to the fair market value of one share of the Company's common stock, as defined in the Company's 2018 Management Stock Purchase Plan, on the date of termination of the Reporting Person's service as an officer of the Company.
3. F3. Represents restricted stock units allocated to the Reporting Person with respect to the Reporting Person's deferral of a portion of their annual base salary and annual cash incentive compensation pursuant to the Company's 2018 Management Stock Purchase Plan.
4. F4. Restricted stock units are payable solely in cash in one lump sum payment or in five (5) or ten (10) consecutive, substantially equal annual installments, whichever distribution form is elected by the Reporting Person, beginning six (6) months following termination of service. Each restricted stock unit is converted to cash in an amount equal to the fair market value of one share of the Company's common stock, as defined in the Company's 2018 Management Stock Purchase Plan, on the date of termination of the Reporting Person's service as an officer of the Company.

FAQ

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

What insider transaction did ROCK CEO William Bosway report on this Form 4?

William T. Bosway reported a tax-withholding disposition of company stock. The transaction used existing shares to satisfy tax obligations rather than an open-market sale, reflecting administrative handling of equity compensation instead of a discretionary buy or sell decision.

How many Gibraltar Industries (ROCK) shares were used for tax withholding?

The filing shows 5,872 common shares were disposed of for tax withholding at $45.48 per share. This reduced the number of directly held shares but reflects payment of tax liabilities tied to equity awards rather than a traditional market sale transaction.

How many ROCK common shares does the CEO hold after this transaction?

After the tax-withholding disposition, William T. Bosway directly holds 227,765 Gibraltar Industries common shares. This number represents his remaining direct equity stake following the share disposition that was used to cover tax obligations associated with his compensation.

What restricted stock units related to ROCK does the CEO hold under the 2018 plan?

The CEO holds 43,981.51 matching restricted stock units and 69,271.42 additional restricted stock units under the 2018 Management Stock Purchase Plan. These units represent deferred compensation tied to salary and incentives, with value linked to Gibraltar Industries’ common stock price.

How are Gibraltar Industries (ROCK) restricted stock units under the 2018 plan settled?

The restricted stock units are ultimately payable solely in cash after the CEO’s service ends. Cash payments are based on the fair market value of Gibraltar Industries common stock at termination, with options for lump sum or multi-year installment distributions under the plan.

Do the ROCK restricted stock units have vesting or forfeiture conditions?

Matching restricted stock units are forfeited if the CEO’s officer service ends before the fifth anniversary of the vesting commencement date. If service continues beyond that point, units are retained and later paid in cash after termination according to the plan’s distribution options.

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

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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).

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^*

Bosway William T

(Last) (First) (Middle)

3556 LAKE SHORE ROAD

P.O. BOX 2028

(Street)

BUFFALO NY 14219-0228

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
GIBRALTAR INDUSTRIES, INC. [ ROCK ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
03/01/2026

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	03/01/2026		F		5,872	D	$45.48	227,765	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 Unit (2018 MSPP Match)(1)	(2)							(2)	(2)	Common Stock	43,981.51		43,981.51	D
Restricted Stock Unit (2018 MSPP)(3)	(4)							(4)	(4)	Common Stock	69,271.42		69,271.42	D

Explanation of Responses:

1. Represents matching restricted stock units allocated to the Reporting Person with respect to the Reporting Person's deferral of a portion of their annual base salary and annual cash incentive compensation pursuant to the Company's 2018 Management Stock Purchase Plan.

2. Restricted stock units are forfeited if Reporting Person's service as an officer of the Company is terminated prior to the fifth (5th) anniversary of the Reporting Person's vesting commencement date. If service as an officer continues beyond the fifth (5th) anniversary of the Reporting Person's vesting commencement date, restricted stock units are payable solely in cash in one lump sum payment or in five (5) or ten (10) consecutive, substantially equal annual installments, whichever distribution form is elected by the Reporting Person, beginning six (6) months following termination of service. Each restricted stock unit is converted to cash in an amount equal to the fair market value of one share of the Company's common stock, as defined in the Company's 2018 Management Stock Purchase Plan, on the date of termination of the Reporting Person's service as an officer of the Company.

3. Represents restricted stock units allocated to the Reporting Person with respect to the Reporting Person's deferral of a portion of their annual base salary and annual cash incentive compensation pursuant to the Company's 2018 Management Stock Purchase Plan.

4. Restricted stock units are payable solely in cash in one lump sum payment or in five (5) or ten (10) consecutive, substantially equal annual installments, whichever distribution form is elected by the Reporting Person, beginning six (6) months following termination of service. Each restricted stock unit is converted to cash in an amount equal to the fair market value of one share of the Company's common stock, as defined in the Company's 2018 Management Stock Purchase Plan, on the date of termination of the Reporting Person's service as an officer of the Company.

	/s/ Jeffrey J. Watorek, Attorney-in-Fact for William T. Bosway	03/03/2026
	** 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.
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