PRIMECAP MANAGEMENT CO/CA/

Position in ROCK — Gibraltar Industries, Inc.

CIK 763212 PASADENA, CA

Position in ROCK

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$4,311,560

+$499,988 QoQ

Shares Held

95,600

0.0% QoQ

Ownership

0.322%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#43

of 245 holders

Holding Since

Mar 2020

26 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Industrials · as of Jun 30, 2026

PRIMECAP MANAGEMENT CO/CA/ holds $354,255,881 across 4 Building Products & Equipment names. ROCK ranks #4 (1.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CARR	CARRIER GLOBAL Corp	3,866,183	$283,584,523
2	GFF	Griffon Corp	411,947	$40,177,190
3	ARLO	Arlo Technologies, Inc.	1,942,330	$26,182,608
4	ROCK	Gibraltar Industries, Inc. This page	95,600	$4,311,560

26 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$4,311,560	95,600	0.0%	Shares	Sole	2026-08-14
2026-03-31	$3,811,572	95,600	0.0%	Shares	Sole	2026-05-11
2025-12-31	$4,726,464	95,600	0.0%	Shares	Sole	2026-02-11
2025-09-30	$6,003,680	95,600	0.0%	Shares	Sole	2025-11-12
2025-06-30	$5,640,400	95,600	-6.5%	Shares	Sole	2025-08-11
2025-03-31	$6,000,918	102,300	0.0%	Shares	Sole	2025-05-09
2024-12-31	$6,025,470	102,300	0.0%	Shares	Sole	2025-02-10
2024-09-30	$7,153,839	102,300	0.0%	Shares	Sole	2024-11-08
2024-06-30	$7,012,665	102,300	0.0%	Shares	Sole	2024-08-09
2024-03-31	$8,238,219	102,300	0.0%	Shares	Sole	2024-05-14
2023-12-31	$8,079,654	102,300	-10.0%	Shares	Sole	2024-02-09
2023-09-30	$7,675,887	113,700	-29.5%	Shares	Sole	2023-11-13
2023-06-30	$10,142,704	161,200	-34.8%	Shares	Sole	2023-08-11
2023-03-31	$11,984,350	247,100	0.0%	Shares	Sole	2023-05-15
2022-12-31	$11,336,948	247,100	-19.7%	Shares	Sole	2023-02-13
2022-09-30	$12,590,068	307,600	-4.5%	Shares	Sole	2022-11-14
2022-06-30	$12,481,375	322,100	-9.8%	Shares	Sole	2022-08-11
2022-03-31	$15,337,445	357,100	-3.8%	Shares	Sole	2022-05-11
2021-12-31	$24,744,948	371,100	0.0%	Shares	Sole	2022-02-11
2021-09-30	$25,847,115	371,100	-0.3%	Shares	Sole	2021-11-12
2021-06-30	$28,394,951	372,100	-0.7%	Shares	Sole	2021-08-10
2021-03-31	$34,307,099	374,900	0.0%	Shares	Sole	2021-05-14
2020-12-31	$26,970,306	374,900	-1.2%	Shares	Sole	2021-02-08
2020-09-30	$24,727,144	379,600	-1.3%	Shares	Sole	2020-11-13
2020-06-30	$18,464,646	384,600	+1.0%	Shares	Sole	2020-08-13
2020-03-31	$16,343,936	380,800	—	Shares	Sole	2020-05-14
No filing history on record for this holder in this stock.