Gibraltar Industries (ROCK) CEO adds 1,000 shares in open-market buy

Rhea-AI Filing Summary

Gibraltar Industries President and CEO William T. Bosway reported an open-market purchase of 1,000 shares of common stock at $41.37 per share. After this transaction, he directly holds 230,585 common shares.

He also holds restricted stock units under the Company’s 2018 Management Stock Purchase Plan, including units tied to 43,981.51 and 69,271.42 underlying common shares. These RSUs stem from deferrals of base salary and annual cash incentives and are payable solely in cash, generally beginning six months after his service as an officer ends. Certain matching RSUs are forfeited if his service ends before the fifth anniversary of the vesting commencement date.

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^*

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)
03/13/2026

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	03/13/2026		P		1,000	A	$41.37	230,585	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	03/16/2026
	** 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 transaction did ROCK CEO William T. Bosway report?

William T. Bosway reported buying 1,000 shares of Gibraltar Industries common stock in an open-market transaction at $41.37 per share. This transaction is disclosed as a purchase and increases his directly held common share position.

How many Gibraltar Industries (ROCK) shares does the CEO hold after this trade?

After the purchase, William T. Bosway directly owns 230,585 shares of Gibraltar Industries common stock. This figure reflects only his common stock holdings and does not include additional economic exposure from restricted stock units that are payable in cash.

At what price did Gibraltar Industries CEO buy the new ROCK shares?

The CEO bought 1,000 Gibraltar Industries common shares at $41.37 per share in an open-market transaction. This reported price represents the per-share consideration for the purchase disclosed in the Form 4 filing.

What restricted stock units linked to ROCK does William T. Bosway hold?

He holds restricted stock units under the 2018 Management Stock Purchase Plan tied to 43,981.51 and 69,271.42 underlying Gibraltar common shares. These units relate to deferrals of salary and incentives and provide cash payments based on the stock’s fair market value.

Are the Gibraltar Industries restricted stock units paid in stock or cash?

The restricted stock units are payable solely in cash, not in actual shares. Payments are based on the fair market value of one share of Gibraltar’s common stock at the time his officer service ends, with options for lump-sum or multi-year installment distributions.

When can the Gibraltar Industries CEO receive payment from these RSUs?

Payment from the restricted stock units generally begins six months after his service as an officer terminates. Depending on his election, distributions may occur in one lump sum or in five or ten substantially equal annual installments.

Can any of the Gibraltar Industries CEO’s restricted stock units be forfeited?

Matching restricted stock units can be forfeited if his service as an officer ends before the fifth anniversary of the vesting commencement date. If his service continues beyond that point, those units become payable in cash according to his chosen distribution schedule.