William T Bosway

Insider

First SEC filing: Jan. 11, 2019 · Latest: May 11, 2026

On this page

Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.

Insider at

Insider transactions

4 buys (P) 0 sells (S) Net: $1,011,833 + 73 non-open-market transactions below Avg return of open purchases vs now: 18.6% last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

73 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 30, 2026	ROCK	A	548	—	—	45,041 Direct	+1.23%	Acquired	(price as of 2026-08-20)
May 26, 2026	ROCK	P	19,735	$37.44	$738,878	250,320 Direct	+8.56%	Acquired	23.9% (price as of 2026-08-20)
May 7, 2026	STRL	A	181	—	—	2,198 Direct	+8.97%	Acquired	(price as of 2026-08-20)
March 31, 2026	ROCK	A	512	—	—	44,494 Direct	+1.16%	Acquired	(price as of 2026-08-20)
March 13, 2026	ROCK	P	1,000	$41.37	$41,370	230,585 Direct	+0.44%	Acquired	12.1% (price as of 2026-08-20)
March 10, 2026	ROCK	P	1,500	$39.52	$59,280	229,585 Direct	+0.66%	Acquired	17.4% (price as of 2026-08-20)
March 9, 2026	ROCK	P	4,500	$38.29	$172,305	228,085 Direct	+2.01%	Acquired	21.2% (price as of 2026-08-20)
March 4, 2026	ROCK	F	30,026	$43.05	$1,292,619	223,585 Direct	-11.84%	Disposed	7.8% (price as of 2026-08-20)
March 3, 2026	ROCK	F	1,955	$43.83	$85,688	253,611 Direct	-0.76%	Disposed	5.8% (price as of 2026-08-20)
March 2, 2026	ROCK	A	27,801	—	—	255,566 Direct	+12.21%	Acquired	(price as of 2026-08-20)
March 1, 2026	ROCK	F	5,872	$45.48	$267,059	227,765 Direct	-2.51%	Disposed	2.0% (price as of 2026-08-20)
May 8, 2025	STRL	A	751	—	—	2,017 Direct	+59.32%	Acquired	(price as of 2026-08-20)
March 7, 2025	ROCK	A	7,974	$67.94	$541,754	69,271 Direct	+13.01%	Acquired	-31.7% (price as of 2026-08-20)
March 7, 2025	ROCK	A	4,784	—	—	43,982 Direct	+12.20%	Acquired	(price as of 2026-08-20)
March 6, 2025	ROCK	F	2,278	$65.71	$149,687	233,637 Direct	-0.97%	Disposed	-29.4% (price as of 2026-08-20)
March 3, 2025	ROCK	A	17,653	—	—	235,915 Direct	+8.09%	Acquired	(price as of 2026-08-20)
March 1, 2025	ROCK	F	15,807	$65.71	$1,038,678	218,262 Direct	-6.75%	Disposed	-29.4% (price as of 2026-08-20)
Feb. 18, 2025	ROCK	A	11,467	—	—	234,069 Direct	+5.15%	Acquired	(price as of 2026-08-20)
May 9, 2024	STRL	A	1,074	—	—	1,266 Direct	+559.38%	Acquired	(price as of 2026-08-20)
March 8, 2024	ROCK	A	17,216	$69.14	$1,190,314	61,298 Direct	+39.05%	Acquired	-32.9% (price as of 2026-08-20)
March 8, 2024	ROCK	A	10,330	—	—	39,197 Direct	+35.78%	Acquired	(price as of 2026-08-20)
March 7, 2024	STRL	A	192	—	—	192 Direct	—	Acquired	(price as of 2026-08-20)
March 2, 2024	ROCK	F	1,853	$77.70	$143,978	222,602 Direct	-0.83%	Disposed	-40.3% (price as of 2026-08-20)
March 1, 2024	ROCK	A	14,157	—	—	224,455 Direct	+6.73%	Acquired	(price as of 2026-08-20)
March 1, 2024	ROCK	F	5,930	$77.70	$460,761	210,298 Direct	-2.74%	Disposed	-40.3% (price as of 2026-08-20)
Feb. 20, 2024	ROCK	A	71,574	—	—	216,228 Direct	+49.48%	Acquired	(price as of 2026-08-20)
Dec. 31, 2023	ROCK	A	287	—	—	28,868 Direct	+1.00%	Acquired	(price as of 2026-08-20)
Sept. 30, 2023	ROCK	A	335	—	—	28,580 Direct	+1.19%	Acquired	(price as of 2026-08-20)
June 30, 2023	ROCK	A	363	—	—	28,246 Direct	+1.30%	Acquired	(price as of 2026-08-20)
March 31, 2023	ROCK	A	439	—	—	27,883 Direct	+1.60%	Acquired	(price as of 2026-08-20)
March 10, 2023	ROCK	A	14,863	$45.96	$683,103	44,081 Direct	+50.87%	Acquired	0.9% (price as of 2026-08-20)
March 10, 2023	ROCK	A	8,918	—	—	27,444 Direct	+48.14%	Acquired	(price as of 2026-08-20)
March 2, 2023	ROCK	F	13,213	$53.48	$706,631	144,654 Direct	-8.37%	Disposed	-13.3% (price as of 2026-08-20)
March 1, 2023	ROCK	A	19,882	—	—	157,867 Direct	+14.41%	Acquired	(price as of 2026-08-20)
March 1, 2023	ROCK	F	6,113	$53.44	$326,679	137,985 Direct	-4.24%	Disposed	-13.2% (price as of 2026-08-20)
Feb. 21, 2023	ROCK	A	23,894	—	—	144,098 Direct	+19.88%	Acquired	(price as of 2026-08-20)
Dec. 31, 2022	ROCK	A	397	—	—	18,527 Direct	+2.19%	Acquired	(price as of 2026-08-20)
Sept. 30, 2022	ROCK	A	521	—	—	18,130 Direct	+2.96%	Acquired	(price as of 2026-08-20)
June 30, 2022	ROCK	A	544	—	—	17,609 Direct	+3.19%	Acquired	(price as of 2026-08-20)
March 31, 2022	ROCK	A	361	—	—	17,065 Direct	+2.16%	Acquired	(price as of 2026-08-20)
March 2, 2022	ROCK	F	1,853	$48.66	$90,167	120,204 Direct	-1.52%	Disposed	-4.7% (price as of 2026-08-20)
March 1, 2022	ROCK	A	21,941	—	—	122,057 Direct	+21.92%	Acquired	(price as of 2026-08-20)
March 1, 2022	ROCK	F	19,208	$47.00	$902,776	100,116 Direct	-16.10%	Disposed	-1.3% (price as of 2026-08-20)
Feb. 22, 2022	ROCK	D	21,079	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Jan. 2, 2022	ROCK	D	9,342	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Jan. 2, 2022	ROCK	F	4,249	$66.68	$283,323	23,603 Direct	-15.26%	Disposed	-30.4% (price as of 2026-08-20)
Jan. 2, 2022	ROCK	A	9,342	—	—	27,852 Direct	+50.47%	Acquired	(price as of 2026-08-20)
March 5, 2021	ROCK	A	7,644	$65.73	$502,440	29,219 Direct	+35.43%	Acquired	-29.4% (price as of 2026-08-20)
March 5, 2021	ROCK	A	4,586	—	—	16,703 Direct	+37.85%	Acquired	(price as of 2026-08-20)
March 2, 2021	ROCK	D	4,181	—	—	12,546 Direct	-25.00%	Disposed	(price as of 2026-08-20)
March 2, 2021	ROCK	F	1,853	$84.10	$155,837	18,510 Direct	-9.10%	Disposed	-44.8% (price as of 2026-08-20)
March 2, 2021	ROCK	A	4,181	—	—	20,363 Direct	+25.84%	Acquired	(price as of 2026-08-20)
March 1, 2021	ROCK	D	5,393	—	—	10,787 Direct	-33.33%	Disposed	(price as of 2026-08-20)
March 1, 2021	ROCK	F	2,390	$88.06	$210,463	16,182 Direct	-12.87%	Disposed	-47.3% (price as of 2026-08-20)
March 1, 2021	ROCK	A	5,393	—	—	18,572 Direct	+40.92%	Acquired	(price as of 2026-08-20)
March 1, 2021	ROCK	A	11,711	—	—	11,711 Direct	—	Acquired	(price as of 2026-08-20)
March 1, 2021	ROCK	A	21,079	—	—	21,079 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 24, 2021	ROCK	A	2,225	—	—	25,643 Direct	+9.50%	Acquired	(price as of 2026-08-20)
Jan. 2, 2021	ROCK	D	9,343	—	—	9,342 Direct	-50.00%	Disposed	(price as of 2026-08-20)
Jan. 2, 2021	ROCK	F	4,237	$71.94	$304,810	13,179 Direct	-24.33%	Disposed	-35.5% (price as of 2026-08-20)
Jan. 2, 2021	ROCK	A	9,343	—	—	17,416 Direct	+115.73%	Acquired	(price as of 2026-08-20)
March 13, 2020	ROCK	A	17,436	$46.22	$805,892	21,575 Direct	+421.26%	Acquired	0.4% (price as of 2026-08-20)
March 13, 2020	ROCK	A	10,462	—	—	12,117 Direct	+632.15%	Acquired	(price as of 2026-08-20)
March 2, 2020	ROCK	A	12,000	—	—	12,000 Direct	—	Acquired	(price as of 2026-08-20)
March 2, 2020	ROCK	A	16,727	—	—	16,727 Direct	—	Acquired	(price as of 2026-08-20)
March 2, 2020	ROCK	A	23,418	—	—	23,418 Direct	—	Acquired	(price as of 2026-08-20)
March 1, 2020	ROCK	D	5,393	—	—	16,180 Direct	-25.00%	Disposed	(price as of 2026-08-20)
March 1, 2020	ROCK	F	2,390	$50.67	$121,101	8,073 Direct	-22.84%	Disposed	-8.4% (price as of 2026-08-20)
March 1, 2020	ROCK	A	5,393	—	—	10,463 Direct	+106.37%	Acquired	(price as of 2026-08-20)
Feb. 27, 2020	ROCK	A	4,832	—	—	35,034 Direct	+16.00%	Acquired	(price as of 2026-08-20)
Jan. 2, 2020	ROCK	D	9,342	—	—	18,685 Direct	-33.33%	Disposed	(price as of 2026-08-20)
Jan. 2, 2020	ROCK	F	4,272	$50.75	$216,804	5,070 Direct	-45.73%	Disposed	-8.6% (price as of 2026-08-20)
Jan. 2, 2020	ROCK	A	9,342	—	—	9,342 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 31, 2019	ROCK	A	938	$50.22	$47,106	4,138 Direct	+29.31%	Acquired	-7.6% (price as of 2026-08-20)
Dec. 31, 2019	ROCK	A	375	—	—	1,655 Direct	+29.30%	Acquired	(price as of 2026-08-20)
Sept. 30, 2019	ROCK	A	965	$41.86	$40,395	3,200 Direct	+43.18%	Acquired	10.8% (price as of 2026-08-20)
Sept. 30, 2019	ROCK	A	386	—	—	1,280 Direct	+43.18%	Acquired	(price as of 2026-08-20)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
June 30, 2026	ROCK	Restricted Stock Unit (2018 MSPP Match) [F1]	Common Stock (548)	—	—	548	Acquired
March 31, 2026	ROCK	Restricted Stock Unit (2018 MSPP Match) [F1]	Common Stock (512)	—	—	512	Acquired
March 7, 2025	ROCK	Restricted Stock Unit (2018 MSPP) [F4]	Common Stock (7,974)	—	—	7,974	Acquired
March 7, 2025	ROCK	Restricted Stock Unit (2018 MSPP Match) [F1]	Common Stock (4,784)	—	—	4,784	Acquired
March 8, 2024	ROCK	Restricted Stock Unit (2018 MSPP) [F4]	Common Stock (17,216)	—	—	17,216	Acquired
March 8, 2024	ROCK	Restricted Stock Unit (2018 MSPP Match) [F1]	Common Stock (10,330)	—	—	10,330	Acquired
Dec. 31, 2023	ROCK	Restricted Stock Unit (2018 MSPP Match) [F1]	Common Stock (287)	—	—	287	Acquired
Sept. 30, 2023	ROCK	Restricted Stock Unit (2018 MSPP Match) [F1]	Common Stock (335)	—	—	335	Acquired
June 30, 2023	ROCK	Restricted Stock Unit (2018 MSPP Match) [F1]	Common Stock (363)	—	—	363	Acquired
March 31, 2023	ROCK	Restricted Stock Unit (2018 MSPP Match) [F1]	Common Stock (439)	—	—	439	Acquired
March 10, 2023	ROCK	Restricted Stock Unit (2018 MSPP) [F4]	Common Stock (14,863)	—	—	14,863	Acquired
March 10, 2023	ROCK	Restricted Stock Unit (2018 MSPP Match) [F1]	Common Stock (8,918)	—	—	8,918	Acquired
Dec. 31, 2022	ROCK	Restricted Stock Unit (2018 MSPP Match) [F1]	Common Stock (397)	—	—	397	Acquired
Sept. 30, 2022	ROCK	Restricted Stock Unit (2018 MSPP Match) [F1]	Common Stock (521)	—	—	521	Acquired
June 30, 2022	ROCK	Restricted Stock Unit (2018 MSPP Match) [F1]	Common Stock (544)	—	—	544	Acquired
March 31, 2022	ROCK	Restricted Stock Unit (2018 MSPP Match) [F1]	Common Stock (361)	—	—	361	Acquired
March 5, 2021	ROCK	Restricted Stock Unit (2018 MSPP) [F4]	Common Stock (7,644)	—	—	7,644	Acquired
March 5, 2021	ROCK	Restricted Stock Unit (2018 MSPP Match) [F1]	Common Stock (4,586)	—	—	4,586	Acquired
March 13, 2020	ROCK	Restricted Stock Unit (2018 MSPP) [F4,F5]	Common Stock (17,436)	—	—	17,436	Acquired
March 13, 2020	ROCK	Restricted Stock Unit (2018 MSPP Match) [F1,F2]	Common Stock (10,462)	—	—	10,462	Acquired
Dec. 31, 2019	ROCK	Restricted Stock Unit (2018 MSPP) [F6]	Common Stock (938)	—	—	938	Acquired
Dec. 31, 2019	ROCK	Restricted Stock Unit (2018 MSPP Match) [F4]	Common Stock (375)	—	—	375	Acquired
Sept. 30, 2019	ROCK	Restricted Stock Unit (2018 MSPP) [F3]	Common Stock (965)	—	—	965	Acquired
Sept. 30, 2019	ROCK	Restricted Stock Unit (2018 MSPP Match) [F1]	Common Stock (386)	—	—	386	Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 2 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
Jan. 11, 2019	ROCK	Special Restricted Stock Units (1/02/2019) [F1]	28,027	Direct
June 7, 2016	DOV	Common Stock	0	Direct