Brad W Buss

Insider

First SEC filing: June 5, 2026 · Latest: June 5, 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

0 buys (P) 4 sells (S) Net: $-11,693,000 + 61 non-open-market transactions below 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

61 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 25, 2026	MRVL	A	1,034	—	—	1,034 Direct	—	Acquired	(price as of 2026-08-20)
June 13, 2026	MRVL	M	3,940	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
June 13, 2026	MRVL	M	3,940	—	—	94,342 Direct	+4.36%	Acquired	(price as of 2026-08-20)
June 3, 2026	QS	A	24,183	—	—	146,659 Direct	+19.75%	Acquired	(price as of 2026-08-20)
March 3, 2026	ACM	A	2,002	—	—	28,513 Direct	+7.55%	Acquired	(price as of 2026-08-20)
Oct. 31, 2025	QS	M	300,000	$6.23	$1,869,000	422,476 Direct	+244.95%	Acquired	-7.4% (price as of 2026-08-20)
Oct. 31, 2025	QS	S	125,000	$17.37	$2,171,250	297,476 Direct	-29.59%	Disposed	-66.8% (price as of 2026-08-20)
Oct. 31, 2025	QS	S	175,000	$18.41	$3,221,750	122,476 Direct	-58.83%	Disposed	-68.7% (price as of 2026-08-20)
Oct. 31, 2025	QS	M	300,000	—	—	707,612 Direct	-29.77%	Disposed	(price as of 2026-08-20)
Oct. 24, 2025	QS	M	400,000	$6.23	$2,492,000	522,476 Direct	+326.59%	Acquired	-7.4% (price as of 2026-08-20)
Oct. 24, 2025	QS	S	200,000	$15.06	$3,012,000	322,476 Direct	-38.28%	Disposed	-61.7% (price as of 2026-08-20)
Oct. 24, 2025	QS	S	200,000	$16.44	$3,288,000	122,476 Direct	-62.02%	Disposed	-64.9% (price as of 2026-08-20)
Oct. 24, 2025	QS	M	400,000	—	—	1,007,612 Direct	-28.42%	Disposed	(price as of 2026-08-20)
June 11, 2024	QS	A	34,423	—	—	74,284 Direct	+86.36%	Acquired	(price as of 2026-08-20)
March 19, 2024	ACM	A	1,789	—	—	24,836 Direct	+7.76%	Acquired	(price as of 2026-08-20)
June 16, 2023	MRVL	A	4,570	—	—	4,570 Direct	—	Acquired	(price as of 2026-08-20)
June 16, 2023	MRVL	M	4,320	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
June 16, 2023	MRVL	M	4,320	—	—	79,543 Direct	+5.74%	Acquired	(price as of 2026-08-20)
June 7, 2023	QS	A	25,236	—	—	39,861 Direct	+172.55%	Acquired	(price as of 2026-08-20)
March 31, 2023	ACM	A	1,987	—	—	23,047 Direct	+9.43%	Acquired	(price as of 2026-08-20)
March 1, 2023	ACM	M	2,297	—	—	21,060 Direct	+12.24%	Acquired	(price as of 2026-08-20)
March 1, 2023	ACM	M	2,297	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 20, 2022	QS	A	14,625	—	—	19,919 Direct	+276.26%	Acquired	(price as of 2026-08-20)
June 23, 2022	MRVL	A	4,320	—	—	4,320 Direct	—	Acquired	(price as of 2026-08-20)
June 23, 2022	MRVL	M	4,354	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
June 23, 2022	MRVL	M	4,354	—	—	75,223 Direct	+6.14%	Acquired	(price as of 2026-08-20)
March 1, 2022	ACM	A	2,297	—	—	2,297 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 24, 2022	ACM	M	2,673	—	—	18,763 Direct	+16.61%	Acquired	(price as of 2026-08-20)
Feb. 24, 2022	ACM	M	2,673	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 15, 2021	QS	A	5,294	—	—	5,294 Direct	—	Acquired	(price as of 2026-08-20)
July 16, 2021	MRVL	A	4,354	—	—	4,354 Direct	—	Acquired	(price as of 2026-08-20)
July 16, 2021	MRVL	M	6,651	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
July 16, 2021	MRVL	M	6,651	—	—	70,869 Direct	+10.36%	Acquired	(price as of 2026-08-20)
May 25, 2021	QS	P	10,000	$23.83	$238,300	314,426 Indirect	+3.28%	Acquired	-75.8% (price as of 2026-08-20)
May 25, 2021	QS	P	10,000	$23.83	$238,300	314,426 Indirect	+3.28%	Acquired	-75.8% (price as of 2026-08-20)
Feb. 24, 2021	ACM	A	2,673	—	—	2,673 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 24, 2021	ACM	M	3,090	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 24, 2021	ACM	M	3,090	—	—	16,090 Direct	+23.77%	Acquired	(price as of 2026-08-20)
Jan. 4, 2021	AAP	A	9	$157.34	$1,416	6,656 Direct	+0.14%	Acquired	-71.6% (price as of 2026-08-20)
Oct. 2, 2020	AAP	A	9	$155.50	$1,400	6,648 Direct	+0.14%	Acquired	-71.3% (price as of 2026-08-20)
Aug. 26, 2020	ACM	P	13,000	$38.56	$501,280	13,000 Direct	—	Acquired	68.2% (price as of 2026-08-20)
Aug. 26, 2020	ACM	A	13,000	$38.56	$501,280	13,000 Direct	—	Acquired	68.2% (price as of 2026-08-20)
Aug. 10, 2020	ACM	A	3,090	—	—	3,090 Direct	-50.00%	Disposed	(price as of 2026-08-20)
July 6, 2020	AAP	A	10	$138.96	$1,390	6,639 Direct	+0.15%	Acquired	-67.8% (price as of 2026-08-20)
May 15, 2020	AAP	A	1,230	$126.06	$155,054	6,629 Direct	+22.78%	Acquired	-64.5% (price as of 2026-08-20)
April 3, 2020	AAP	A	12	$84.65	$1,016	5,400 Direct	+0.22%	Acquired	-47.2% (price as of 2026-08-20)
Jan. 3, 2020	AAP	A	2	$159.42	$319	5,387 Direct	+0.04%	Acquired	-72.0% (price as of 2026-08-20)
Oct. 4, 2019	AAP	A	2	$159.94	$320	5,386 Direct	+0.04%	Acquired	-72.1% (price as of 2026-08-20)
July 5, 2019	AAP	A	2	$160.62	$321	5,384 Direct	+0.04%	Acquired	-72.2% (price as of 2026-08-20)
May 15, 2019	AAP	A	995	—	—	5,383 Direct	+22.68%	Acquired	(price as of 2026-08-20)
April 5, 2019	AAP	A	1	$176.78	$177	4,388 Direct	+0.02%	Acquired	-74.7% (price as of 2026-08-20)
Jan. 4, 2019	AAP	A	1	$158.81	$159	4,387 Direct	+0.02%	Acquired	-71.9% (price as of 2026-08-20)
Oct. 5, 2018	AAP	A	1	$165.83	$166	4,386 Direct	+0.02%	Acquired	-73.0% (price as of 2026-08-20)
July 6, 2018	AAP	A	1	$137.17	$137	4,384 Direct	+0.02%	Acquired	-67.4% (price as of 2026-08-20)
May 29, 2018	AAP	A	1,250	—	—	4,383 Direct	+39.90%	Acquired	(price as of 2026-08-20)
April 6, 2018	AAP	A	1	$111.91	$112	3,133 Direct	+0.03%	Acquired	-60.1% (price as of 2026-08-20)
Jan. 5, 2018	AAP	A	1	$112.18	$112	3,132 Direct	+0.03%	Acquired	-60.2% (price as of 2026-08-20)
Oct. 6, 2017	AAP	A	2	$94.29	$189	3,131 Direct	+0.06%	Acquired	-52.6% (price as of 2026-08-20)
July 24, 2017	TSLA	A	6,000	—	—	6,000 Direct	—	Acquired	(price as of 2026-08-20)
July 24, 2017	TSLA	A	9,000	—	—	15,000 Direct	+150.00%	Acquired	(price as of 2026-08-20)
July 24, 2017	TSLA	A	12,000	—	—	27,000 Direct	+80.00%	Acquired	(price as of 2026-08-20)
July 7, 2017	AAP	A	1	$101.93	$102	3,129 Direct	+0.03%	Acquired	-56.2% (price as of 2026-08-20)
May 31, 2017	AAP	P	1,200	$134.47	$161,364	3,128 Direct	+62.24%	Acquired	-66.8% (price as of 2026-08-20)
May 30, 2017	AAP	A	940	—	—	1,928 Direct	+95.14%	Acquired	(price as of 2026-08-20)
Dec. 13, 2016	TSLA	G	1,300	—	—	7,142 Indirect	-15.40%	Disposed	(price as of 2026-08-20)
Oct. 7, 2016	AAP	A	1	$148.13	$148	988 Direct	+0.10%	Acquired	-69.8% (price as of 2026-08-20)
May 23, 2016	AAP	A	857	—	—	987 Direct	+659.23%	Acquired	(price as of 2026-08-20)
March 31, 2016	AAP	A	130	—	—	130 Direct	—	Acquired	(price as of 2026-08-20)
June 13, 2011	TSLA	A	16,666	—	—	16,666 Direct	—	Acquired	(price as of 2026-08-20)
July 2, 2010	TSLA	P	11,764	$17.00	$199,988	11,764 Direct	—	Acquired	30363.2% (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 25, 2026	MRVL	Restricted Stock Units	Common Stock (1,034)	—	—	1,034	Acquired
June 13, 2026	MRVL	Restricted Stock Units	Common Stock (3,940)	—	—	3,940	Disposed
Oct. 31, 2025	QS	Stock Option (Right to Buy)	Class A Common Stock (300,000)	$6.23	Sept. 2, 2030	300,000	Disposed
Oct. 24, 2025	QS	Stock Option (Right to Buy)	Class A Common Stock (400,000)	$6.23	Sept. 2, 2030	400,000	Disposed
June 16, 2023	MRVL	Restricted Stock Units	Common Stock (4,570)	—	—	4,570	Acquired
June 16, 2023	MRVL	Restricted Stock Units	Common Stock (4,320)	—	—	4,320	Disposed
March 1, 2023	ACM	Restricted Stock Units	Common Stock (2,297)	—	—	2,297	Disposed
June 23, 2022	MRVL	Restricted Stock Units	Common Stock (4,320)	—	—	4,320	Acquired
June 23, 2022	MRVL	Restricted Stock Units	Common Stock (4,354)	—	—	4,354	Disposed
March 1, 2022	ACM	Restricted Stock Units	Common Stock (2,297)	—	—	2,297	Acquired
Feb. 24, 2022	ACM	Restricted Stock Units	Common Stock (2,673)	—	—	2,673	Disposed
July 16, 2021	MRVL	Restricted Stock Units	Common Stock (4,354)	—	—	4,354	Acquired
July 16, 2021	MRVL	Restricted Stock Units	Common Stock (6,651)	—	—	6,651	Disposed
Feb. 24, 2021	ACM	Restricted Stock Units	Common Stock (2,673)	—	—	2,673	Acquired
Feb. 24, 2021	ACM	Restricted Stock Units	Common Stock (3,090)	—	—	3,090	Disposed
Aug. 10, 2020	ACM	Restricted Stock Unit	Common Stock (3,090)	—	—	3,090	Disposed
July 24, 2017	TSLA	Non-Qualified Stock Option (right to buy)	Common Stock (6,000)	$342.52	July 24, 2024	6,000	Acquired
July 24, 2017	TSLA	Non-Qualified Stock Option (right to buy)	Common Stock (9,000)	$342.52	July 24, 2024	9,000	Acquired
July 24, 2017	TSLA	Non-Qualified Stock Option (right to buy)	Common Stock (12,000)	$342.52	July 24, 2024	12,000	Acquired
June 13, 2011	TSLA	Non-Qualified Stock Option (right to buy)	Common Stock (16,666)	$28.43	June 12, 2018	16,666	Acquired

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

Initial ownership (Form 3) 5 holdings

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

Date	Ticker	Security	Shares	Ownership
April 21, 2021	MRVL	Common Stock	64,218	Direct
April 21, 2021	MRVL	Restricted Stock Units→ Common Stock (6,651)	6,651	Direct
Dec. 7, 2020	QS	Class A Common Stock	304,426	Indirect
Dec. 7, 2020	QS	Stock Option (right to buy)→ Class A Common Stock (1,407,612)	1,407,612	Direct
June 25, 2010	TSLA	Right to Buy (Common Stock) [F1]→ Common Stock (33,333)	33,333	Direct