PETERS WILLIAM J

AMPH

PETERS WILLIAM J serves as director, officer: CFO, EVP & TREASURER at Amphastar Pharmaceuticals, Inc. (AMPH). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

40 trades

$22.02M

Net Position

Net Seller

$22.02M

Companies Traded

AMPH

Active Period

Mar 2021 – Aug 2026

40 total trades

Most Recent

Sell AMPH

Aug 11, 2026 · $183.9K

PETERS WILLIAM J's Insider Trading at Amphastar Pharmaceuticals, Inc. (AMPH)

Buys

0 · $0.00

Sells

40 · $22.02M

Total Shares Bought

Total Shares Sold

574,832

AMPH Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Aug 11, 2026	Sell	8,180	$22.48	$183.9K	172,846
May 19, 2025	Sell	273	$24.79	$6.8K	0
Mar 15, 2025	Sell	4,972	$27.28	$135.6K	0
Mar 6, 2025	Sell	2,141	$28.32	$60.6K	0
Mar 4, 2025	Sell	5,970	$27.56	$164.5K	0
Nov 6, 2024	Sell	7,426	$52.05	$386.5K	0
Jul 31, 2024	Sell	10,282	$44.23	$454.8K	0
Jun 27, 2024	Sell	3,596	$40.93	$147.2K	0
May 19, 2024	Sell	387	$43.48	$16.8K	0
Mar 15, 2024	Sell	11,645	$43.05	$501.3K	0
Mar 6, 2024	Sell	20,326	$46.46	$944.3K	0
Nov 14, 2023	Sell	59,250	$55.67	$3.30M	0
Sep 6, 2023	Sell	60,743	$51.75	$3.14M	0
Jun 15, 2023	Sell	36,868	$50.85	$1.87M	0
Jun 2, 2023	Sell	11,000	$46.35	$509.9K	0
May 18, 2023	Sell	10,878	$44.34	$482.4K	0
Apr 17, 2023	Sell	5,632	$42.35	$238.5K	0
Apr 13, 2023	Sell	4,868	$42.35	$206.2K	0
Apr 10, 2023	Sell	10,032	$40.35	$404.8K	0
Mar 16, 2023	Sell	9,157	$37.00	$338.9K	0
Mar 15, 2023	Sell	16,922	$36.53	$618.2K	0
Mar 1, 2023	Sell	10,974	$36.33	$398.7K	0
Aug 9, 2022	Sell	10,000	$38.35	$383.5K	0
Jun 30, 2022	Sell	18,386	$34.95	$642.6K	0
Jun 17, 2022	Sell	5,512	$32.05	$176.7K	0
May 19, 2022	Sell	378	$33.70	$12.7K	0
Mar 16, 2022	Sell	59,934	$34.00	$2.04M	0
Mar 15, 2022	Sell	13,889	$34.58	$480.3K	0
Mar 7, 2022	Sell	13,026	$29.35	$382.3K	0
Feb 25, 2022	Sell	23,000	$28.47	$654.9K	0
Feb 8, 2022	Sell	10,000	$26.95	$269.5K	0
Jan 7, 2022	Sell	47,776	$24.75	$1.18M	0
Dec 30, 2021	Sell	10,000	$23.40	$234.0K	0
Dec 21, 2021	Sell	8,256	$22.40	$184.9K	0
Dec 16, 2021	Sell	1,744	$22.40	$39.1K	0
Nov 11, 2021	Sell	10,000	$21.33	$213.3K	0
Aug 16, 2021	Sell	6,589	$19.35	$127.5K	0
Jul 7, 2021	Sell	10,000	$20.37	$203.7K	0
Mar 16, 2021	Sell	6,398	$18.44	$118.0K	0
Mar 15, 2021	Sell	8,422	$19.09	$160.8K	0

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