Gibraltar CEO buys 6,000 company shares

Gibraltar Industries President and CEO William T. Bosway bought a total of 6,000 shares of common stock in open-market transactions.

Rhea-AI Filing Summary

Gibraltar Industries President and CEO William T. Bosway bought a total of 6,000 shares of common stock in open-market transactions. He purchased 4,500 shares on March 9, 2026 at $38.29 per share and 1,500 shares on March 10, 2026 at $39.525 per share.

After these trades, he directly owns 229,585 common shares. He also holds restricted stock units under the company’s 2018 Management Stock Purchase Plan that are settled in cash based on the value of 43,981.51 and 69,271.42 underlying shares of common stock.

Insider Trade Summary

Net Buyer: 6,000 shares

Net Buy 4 txns

Insider Bosway William T

Role President and CEO

Bought 6,000 shs ($232K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	1,500	$39.525	$59K
Purchase	Common Stock	4,500	$38.29	$172K
holding	Restricted Stock Unit (2018 MSPP Match)	--	--	--
holding	Restricted Stock Unit (2018 MSPP)	--	--	--

Holdings After Transaction: Common Stock — 229,585 shares (Direct); Restricted Stock Unit (2018 MSPP Match) — 43,981.51 contracts (Direct); Restricted Stock Unit (2018 MSPP) — 69,271.42 contracts (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?

William T. Bosway reported open-market purchases of 6,000 Gibraltar Industries common shares. He bought 4,500 shares at $38.29 on March 9, 2026 and 1,500 shares at $39.525 on March 10, 2026, increasing his direct ownership stake.

At what prices did the ROCK CEO buy Gibraltar Industries shares?

The CEO purchased shares in two open-market trades. He acquired 4,500 Gibraltar Industries common shares at $38.29 per share on March 9, 2026 and 1,500 shares at $39.525 per share on March 10, 2026, according to the Form 4 filing.

How many Gibraltar Industries shares does the ROCK CEO now directly own?

Following the reported open-market purchases, William T. Bosway directly owns 229,585 shares of Gibraltar Industries common stock. This total reflects his position after buying 6,000 additional shares across two transactions in March 2026, as disclosed in the Form 4.

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

The CEO holds restricted stock units under the 2018 Management Stock Purchase Plan. These units are tied economically to 43,981.51 and 69,271.42 underlying Gibraltar Industries common shares and are payable solely in cash based on the stock’s fair market value at termination of service.

Are the ROCK CEO’s restricted stock units settled in shares or cash?

The restricted stock units are settled solely in cash, not in shares. Upon termination of service, each unit pays cash equal to the fair market value of one Gibraltar Industries common share, in either a lump sum or installments, as described in the management stock purchase plan.

What is the source of the ROCK CEO’s restricted stock units?

The restricted stock units were allocated in connection with the CEO’s deferral of portions of his annual base salary and annual cash incentive compensation under Gibraltar Industries’ 2018 Management Stock Purchase Plan, which allows management to defer compensation into stock-based cash-settled units.

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

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Accepted by SEC EDGAR 03/10/2026 - 02:16 PM 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

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)
03/09/2026

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	03/09/2026		P		4,500	A	$38.29	228,085	D
Common Stock	03/10/2026		P		1,500	A	$39.525	229,585	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	03/10/2026
	** 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.