William T. Bosway

CIK: 0001675953

Transaction Breakdown

Open Market Buys (P)4 (21.1%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)10 (52.6%)

Compensation grants

Other (G, F, J, C, D, …)5 (26.3%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (2)

ROCK

GIBRALTAR INDUSTRIES, INC.

DirectorOfficer

STRL

STERLING INFRASTRUCTURE, INC.

Director

Discretionary Trading P&L

Holdings

Transaction History (19 total)

ROCK
GIBRALTAR INDUSTRIES, INC.
Sep 30, 2026
Award(A)
Restricted Stock Unit (2018 MSPP Match)
Direct
518 shares-
ROCK
GIBRALTAR INDUSTRIES, INC.
Jun 30, 2026
Award(A)
Restricted Stock Unit (2018 MSPP Match)
Direct
548 shares-
ROCK
GIBRALTAR INDUSTRIES, INC.
May 26, 2026
Purchase(P)
Direct
19.7K shares at avg. $37.44$739K
STRL
STERLING INFRASTRUCTURE, INC.
May 7, 2026
Award(A)
Direct
181 shares-
ROCK
GIBRALTAR INDUSTRIES, INC.
Mar 31, 2026
Award(A)
Restricted Stock Unit (2018 MSPP Match)
Direct
512 shares-
ROCK
GIBRALTAR INDUSTRIES, INC.
Mar 13, 2026
Purchase(P)
Direct
1K shares at avg. $41.37$41K
ROCK
GIBRALTAR INDUSTRIES, INC.
Mar 10, 2026
Purchase(P)
Direct
1.5K shares at avg. $39.52$59K
ROCK
GIBRALTAR INDUSTRIES, INC.
Mar 9, 2026
Purchase(P)
Direct
4.5K shares at avg. $38.29$172K
ROCK
GIBRALTAR INDUSTRIES, INC.
Mar 4, 2026
Tax Payment(F)
Direct
30K shares at avg. $43.05$1.3M
ROCK
GIBRALTAR INDUSTRIES, INC.
Mar 3, 2026
Tax Payment(F)
Direct
2K shares at avg. $43.83$86K
ROCK
GIBRALTAR INDUSTRIES, INC.
Mar 2, 2026
Award(A)
Direct
27.8K shares-
ROCK
GIBRALTAR INDUSTRIES, INC.
Mar 1, 2026
Tax Payment(F)
Direct
5.9K shares at avg. $45.48$267K
STRL
STERLING INFRASTRUCTURE, INC.
May 8, 2025
Award(A)
Direct
751 shares-
ROCK
GIBRALTAR INDUSTRIES, INC.
Mar 7, 2025
Award(A)
Restricted Stock Unit (2018 MSPP Match)
Direct
4.8K shares-
ROCK
GIBRALTAR INDUSTRIES, INC.
Mar 7, 2025
Award(A)
Restricted Stock Unit (2018 MSPP)
Direct
8K shares at avg. $67.94-
ROCK
GIBRALTAR INDUSTRIES, INC.
Mar 6, 2025
Tax Payment(F)
Direct
2.3K shares at avg. $65.71$150K
ROCK
GIBRALTAR INDUSTRIES, INC.
Mar 3, 2025
Award(A)
Direct
17.7K shares-
ROCK
GIBRALTAR INDUSTRIES, INC.
Mar 1, 2025
Tax Payment(F)
Direct
15.8K shares at avg. $65.71$1.0M
ROCK
GIBRALTAR INDUSTRIES, INC.
Feb 18, 2025
Award(A)
Direct
11.5K shares-

		Type	Shares	Price		Ownership
Sep 30, 2026	ROCK GIBRALTAR INDUSTRIES, INC.	Award(A) Restricted Stock Unit (2018 MSPP Match)	518	-	-	Direct
Jun 30, 2026	ROCK GIBRALTAR INDUSTRIES, INC.	Award(A) Restricted Stock Unit (2018 MSPP Match)	548	-	-	Direct
May 26, 2026	ROCK GIBRALTAR INDUSTRIES, INC.	Purchase(P)	19,735	$37.44	$738,833	Direct
May 7, 2026	STRL STERLING INFRASTRUCTURE, INC.	Award(A)	181	-	$0	Direct
Mar 31, 2026	ROCK GIBRALTAR INDUSTRIES, INC.	Award(A) Restricted Stock Unit (2018 MSPP Match)	512	-	-	Direct
Mar 13, 2026	ROCK GIBRALTAR INDUSTRIES, INC.	Purchase(P)	1,000	$41.37	$41,370	Direct
Mar 10, 2026	ROCK GIBRALTAR INDUSTRIES, INC.	Purchase(P)	1,500	$39.52	$59,288	Direct
Mar 9, 2026	ROCK GIBRALTAR INDUSTRIES, INC.	Purchase(P)	4,500	$38.29	$172,305	Direct
Mar 4, 2026	ROCK GIBRALTAR INDUSTRIES, INC.	Tax Payment(F)	30,026	$43.05	$1,292,619	Direct
Mar 3, 2026	ROCK GIBRALTAR INDUSTRIES, INC.	Tax Payment(F)	1,955	$43.83	$85,688	Direct
Mar 2, 2026	ROCK GIBRALTAR INDUSTRIES, INC.	Award(A)	27,801	-	$0	Direct
Mar 1, 2026	ROCK GIBRALTAR INDUSTRIES, INC.	Tax Payment(F)	5,872	$45.48	$267,059	Direct
May 8, 2025	STRL STERLING INFRASTRUCTURE, INC.	Award(A)	751	-	-	Direct
Mar 7, 2025	ROCK GIBRALTAR INDUSTRIES, INC.	Award(A) Restricted Stock Unit (2018 MSPP Match)	4,784	-	-	Direct
Mar 7, 2025	ROCK GIBRALTAR INDUSTRIES, INC.	Award(A) Restricted Stock Unit (2018 MSPP)	7,974	$67.94	-	Direct
Mar 6, 2025	ROCK GIBRALTAR INDUSTRIES, INC.	Tax Payment(F)	2,278	$65.71	$149,687	Direct
Mar 3, 2025	ROCK GIBRALTAR INDUSTRIES, INC.	Award(A)	17,653	-	-	Direct
Mar 1, 2025	ROCK GIBRALTAR INDUSTRIES, INC.	Tax Payment(F)	15,807	$65.71	$1,038,678	Direct
Feb 18, 2025	ROCK GIBRALTAR INDUSTRIES, INC.	Award(A)	11,467	-	-	Direct

1-19 of 19 transactions

About Bosway William T

Bosway William T (SEC CIK 0001675953) files insider reports with the SEC as President and CEO of GIBRALTAR INDUSTRIES, INC. (ROCK) and Director of STERLING INFRASTRUCTURE, INC. (STRL).

Signal8 holds 16 ownership filings by Bosway William T, all Form 4s, filed between Feb 19, 2025 and Oct 1, 2026. Those filings report 19 transactions, from Feb 18, 2025 to Sep 30, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Bosway William T's filings is in BUFFALO, NY.

Recent filings by Bosway William T

Sep 30, 2026: Grant or award of ROCK derivative securities (Form 4, code A).
Jun 30, 2026: Grant or award of ROCK derivative securities (Form 4, code A).
May 26, 2026: Open-market purchase of ROCK shares (Form 4, code P).
May 7, 2026: Grant or award of STRL shares (Form 4, code A).
Mar 31, 2026: Grant or award of ROCK derivative securities (Form 4, code A).

Other insiders filing for GIBRALTAR INDUSTRIES, INC. (ROCK)

Shah Manish H, Director
Watorek Jeffrey J., VP and Treasurer
Catlett Janet Anne, VP, CHRO
Bolanowski Katherine, General Counsel, VP, Secretary
Lovechio Joseph A, VP and CFO
Mizell Gwendolyn G, Director

How to read Form 4 transaction codes