Peters William J

CFO, EVP &Treasurer | CFO, EVP &Treasurer | CFO, SVP &Treasurer

1 company

Good

Trades Analyzed

12M Win Rate

45.2%

Avg 3M Return

-13.5%

Avg 12M Return

-6.4%

Peters William J is a CFO, EVP &Treasurer at Amphastar Pharmaceuticals, Inc.. Recent SEC Form 4 filings include 0 buys and 18 sells.

Estimated insider holdings value: $3.6M based on current market prices.

Holdings by Company

AMPHMar 10, 2026

Current Shares177.0K

Value$3.58M

Net Activity-660,493

Bought: 0Sold: 660.5K

Showing 10 filings

Date	Ticker	Role	Type	Shares	Price	Value	Chg%
Mar 4, 2025	AMPH Amphastar Pharmaceuticals, Inc.	CFO, EVP &Treasurer	Sale+OE	4,231	$27.54	$116,515.39	-4.2%
Nov 6, 2024	AMPH Amphastar Pharmaceuticals, Inc.	CFO, EVP &Treasurer	Sale+OE	7,426	$52.05	$386,523.30	-7.3%
Jul 31, 2024	AMPH Amphastar Pharmaceuticals, Inc.	CFO, EVP &Treasurer	Sale+OE	10,282	$44.23	$454,772.86	-9.9%
Jun 27, 2024	AMPH Amphastar Pharmaceuticals, Inc.	CFO, EVP &Treasurer	Sell	3,596	$40.93	$147,169.15	-1.9%
Mar 6, 2024	AMPH Amphastar Pharmaceuticals, Inc.	CFO, EVP &Treasurer	Sale+OE	18,136	$46.48	$842,883.11	-5.1%
Nov 14, 2023	AMPH Amphastar Pharmaceuticals, Inc.	CFO, EVP &Treasurer	Sale+OE	59,250	$55.67	$3,298,474.68	-14.0%
Sep 6, 2023	AMPH Amphastar Pharmaceuticals, Inc.	CFO, EVP &Treasurer	Sale+OE	60,743	$51.75	$3,143,195.16	-23.1%
Jun 15, 2023	AMPH Amphastar Pharmaceuticals, Inc.	CFO, EVP &Treasurer	Sale+OE	36,868	$50.85	$1,874,789.72	-9.4%
Jun 2, 2023	AMPH Amphastar Pharmaceuticals, Inc.	CFO, EVP &Treasurer	Sale+OE	11,000	$46.35	$509,858.80	-9.4%
May 18, 2023	AMPH Amphastar Pharmaceuticals, Inc.	CFO, EVP &Treasurer	Sale+OE	10,500	$44.35	$465,675.00	-9.1%