Samuel H. Altman

Activist

First SEC filing: April 4, 2025 · Latest: April 4, 2025

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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) 0 sells (S) Net: $0 + 41 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

41 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Nov. 19, 2024	OKLO	M	581,100	—	—	0 Indirect	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 19, 2024	OKLO	M	581,100	—	—	3,732,479 Indirect	+18.44%	Acquired	(price as of 2026-08-20)
May 9, 2024	OKLO	A	581,131	—	—	581,131 Indirect	—	Acquired	(price as of 2026-08-20)
May 9, 2024	OKLO	A	3,151,379	—	—	3,151,379 Indirect	—	Acquired	(price as of 2026-08-20)
June 1, 2023	EXPE	M	1,048	—	—	5,522 Direct	+23.42%	Acquired	(price as of 2026-08-20)
June 1, 2023	EXPE	M	645	—	—	6,167 Direct	+11.68%	Acquired	(price as of 2026-08-20)
June 1, 2023	EXPE	M	470	—	—	6,637 Direct	+7.62%	Acquired	(price as of 2026-08-20)
June 1, 2023	EXPE	M	1,048	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
June 1, 2023	EXPE	M	470	—	—	470 Direct	-50.00%	Disposed	(price as of 2026-08-20)
June 1, 2023	EXPE	M	645	—	—	1,288 Direct	-33.37%	Disposed	(price as of 2026-08-20)
Jan. 1, 2023	EXPE	A	128	—	—	645 Direct	+24.76%	Acquired	(price as of 2026-08-20)
Oct. 1, 2022	EXPE	A	120	—	—	517 Direct	+30.23%	Acquired	(price as of 2026-08-20)
Sept. 10, 2022	EXPE	M	635	—	—	4,474 Direct	+16.54%	Acquired	(price as of 2026-08-20)
Sept. 10, 2022	EXPE	M	635	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
July 1, 2022	EXPE	A	74	—	—	397 Direct	+22.91%	Acquired	(price as of 2026-08-20)
June 1, 2022	EXPE	M	1,049	—	—	3,367 Direct	+45.25%	Acquired	(price as of 2026-08-20)
June 1, 2022	EXPE	M	472	—	—	3,839 Direct	+14.02%	Acquired	(price as of 2026-08-20)
June 1, 2022	EXPE	M	1,049	—	—	1,048 Direct	-50.02%	Disposed	(price as of 2026-08-20)
June 1, 2022	EXPE	M	472	—	—	940 Direct	-33.43%	Disposed	(price as of 2026-08-20)
June 1, 2022	EXPE	A	1,933	—	—	1,933 Direct	—	Acquired	(price as of 2026-08-20)
April 1, 2022	EXPE	A	57	—	—	322 Direct	+21.51%	Acquired	(price as of 2026-08-20)
Jan. 1, 2022	EXPE	A	62	—	—	265 Direct	+30.54%	Acquired	(price as of 2026-08-20)
Oct. 1, 2021	EXPE	A	69	—	—	203 Direct	+51.49%	Acquired	(price as of 2026-08-20)
Sept. 10, 2021	EXPE	M	635	—	—	2,318 Direct	+37.73%	Acquired	(price as of 2026-08-20)
Sept. 10, 2021	EXPE	M	635	—	—	635 Direct	-50.00%	Disposed	(price as of 2026-08-20)
July 1, 2021	EXPE	A	69	—	—	134 Direct	+106.15%	Acquired	(price as of 2026-08-20)
June 1, 2021	EXPE	M	1,048	—	—	1,683 Direct	+165.04%	Acquired	(price as of 2026-08-20)
June 1, 2021	EXPE	M	1,048	—	—	2,097 Direct	-33.32%	Disposed	(price as of 2026-08-20)
June 1, 2021	EXPE	A	1,412	—	—	1,412 Direct	—	Acquired	(price as of 2026-08-20)
April 1, 2021	EXPE	A	65	—	—	65 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 10, 2020	EXPE	M	635	—	—	635 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 10, 2020	EXPE	M	635	—	—	1,270 Direct	-33.33%	Disposed	(price as of 2026-08-20)
June 1, 2020	EXPE	A	3,145	—	—	3,145 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 25, 2019	EXPE	P	20,000	$98.83	$1,976,600	20,000 Indirect	—	Acquired	229.9% (price as of 2026-08-20)
Sept. 10, 2019	EXPE	A	1,905	—	—	1,905 Direct	—	Acquired	(price as of 2026-08-20)
May 28, 2015	GDOT	A	7,037	—	—	12,936 Direct	+119.29%	Acquired	(price as of 2026-08-20)
May 21, 2014	GDOT	A	8,952	—	—	8,952 Direct	—	Acquired	(price as of 2026-08-20)
May 21, 2014	GDOT	A	1,676	—	—	5,899 Direct	+39.69%	Acquired	(price as of 2026-08-20)
Oct. 1, 2013	GDOT	A	7,096	—	—	7,096 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 1, 2013	GDOT	A	1,150	—	—	4,223 Direct	+37.42%	Acquired	(price as of 2026-08-20)
Aug. 15, 2013	GDOT	M	10,750	—	—	32,250 Direct	-25.00%	Disposed	(price as of 2026-08-20)
Aug. 15, 2013	GDOT	S	10,750	$24.11	$259,182	1,154 Direct	-90.31%	Disposed	-44.3% (price as of 2026-08-20)
Aug. 15, 2013	GDOT	M	10,750	$12.75	$137,062	11,904 Direct	+931.54%	Acquired	5.3% (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
Nov. 19, 2024	OKLO	Earnout Rights	Class A Common Stock (581,100)	—	—	581,100	Disposed
May 9, 2024	OKLO	Earnout Rights	Class A Common Stock (581,131)	—	—	581,131	Acquired
June 1, 2023	EXPE	Restricted Stock Units	Common Stock (1,048)	$0.00	June 1, 2023	1,048	Disposed
June 1, 2023	EXPE	Restricted Stock Units	Common Stock (470)	$0.00	June 1, 2024	470	Disposed
June 1, 2023	EXPE	Restricted Stock Units	Common Stock (645)	$0.00	June 1, 2025	645	Disposed
Jan. 1, 2023	EXPE	Stock Units	Common Stock (128)	—	—	128	Acquired
Oct. 1, 2022	EXPE	Stock Units	Common Stock (120)	—	—	120	Acquired
Sept. 10, 2022	EXPE	Restricted Stock Units	Common Stock (635)	$0.00	Sept. 10, 2022	635	Disposed
July 1, 2022	EXPE	Stock Units	Common Stock (74)	—	—	74	Acquired
June 1, 2022	EXPE	Restricted Stock Units	Common Stock (1,049)	$0.00	June 1, 2023	1,049	Disposed
June 1, 2022	EXPE	Restricted Stock Units	Common Stock (472)	$0.00	June 1, 2024	472	Disposed
June 1, 2022	EXPE	Restricted Stock Units	Common Stock (1,933)	$0.00	June 1, 2025	1,933	Acquired
April 1, 2022	EXPE	Stock Units	Common Stock (57)	—	—	57	Acquired
Jan. 1, 2022	EXPE	Stock Units	Common Stock (62)	—	—	62	Acquired
Oct. 1, 2021	EXPE	Stock Units	Common Stock (69)	—	—	69	Acquired
Sept. 10, 2021	EXPE	Restricted Stock Units	Common Stock (635)	$0.00	Sept. 10, 2022	635	Disposed
July 1, 2021	EXPE	Stock Units	Common Stock (69)	—	—	69	Acquired
June 1, 2021	EXPE	Restricted Stock Units	Common Stock (1,048)	$0.00	June 1, 2023	1,048	Disposed
June 1, 2021	EXPE	Restricted Stock Units	Common Stock (1,412)	$0.00	June 1, 2024	1,412	Acquired
April 1, 2021	EXPE	Stock Units	Common Stock (65)	—	—	65	Acquired
Sept. 10, 2020	EXPE	Restricted Stock Units	Common Stock (635)	$0.00	Sept. 10, 2022	635	Disposed
June 1, 2020	EXPE	Restricted Stock Units	Common Stock (3,145)	$0.00	June 1, 2023	3,145	Acquired
Sept. 10, 2019	EXPE	Restricted Stock Units	Common Stock (1,905)	$0.00	Sept. 10, 2022	1,905	Acquired
May 21, 2014	GDOT	Stock Option (right to buy Class A Common Stock)	Class A Common Stock (8,952)	$17.89	May 21, 2024	8,952	Acquired
Oct. 1, 2013	GDOT	Stock Option (right to buy Class A Common Stock)	Class A Common Stock (7,096)	$26.08	Oct. 1, 2023	7,096	Acquired
Aug. 15, 2013	GDOT	Stock Option (right to buy Class A Common Stock)	Class A Common Stock (10,750)	$12.75	Oct. 1, 2022	10,750	Disposed

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

Initial ownership (Form 3) 4 holdings

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

Date	Ticker	Security	Shares	Ownership
March 12, 2013	GDOT	Class A Common Stock	1,154	Direct
March 12, 2013	GDOT	Stock Option (right to buy Class A Common Stock)→ Class A Common Stock (60,000)	60,000	Direct
March 12, 2013	GDOT	Stock Option (right to buy Class A Common Stock)→ Class A Common Stock (43,000)	43,000	Direct
March 12, 2013	GDOT	Stock Option (right to buy Class A Common Stock)→ Class A Common Stock (15,000)	15,000	Direct