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 11 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 (page 2)

Date	Ticker	Role	Type	Shares	Price	Value	Chg%
Apr 17, 2023	AMPH Amphastar Pharmaceuticals, Inc.	CFO, EVP &Treasurer	Sale+OE	5,632	$42.35	$238,515.20	-5.1%
Apr 13, 2023	AMPH Amphastar Pharmaceuticals, Inc.	CFO, EVP &Treasurer	Sale+OE	4,868	$42.35	$206,159.80	-4.4%
Apr 10, 2023	AMPH Amphastar Pharmaceuticals, Inc.	CFO, EVP &Treasurer	Sale+OE	10,032	$40.35	$404,791.20	-8.7%
Mar 15, 2023	AMPH Amphastar Pharmaceuticals, Inc.	CFO, EVP &Treasurer	Sale+OE	12,776	$36.43	$465,471.84	-9.7%
Mar 1, 2023	AMPH Amphastar Pharmaceuticals, Inc.	CFO, EVP &Treasurer	Sale+OE	10,974	$36.33	$398,685.42	-9.8%
Aug 9, 2022	AMPH Amphastar Pharmaceuticals, Inc.	CFO, EVP &Treasurer	Sale+OE	10,000	$38.35	$383,500.00	-9.1%
Jun 30, 2022	AMPH Amphastar Pharmaceuticals, Inc.	CFO, EVP &Treasurer	Sale+OE	18,386	$34.95	$642,590.70	-15.5%
Jun 17, 2022	AMPH Amphastar Pharmaceuticals, Inc.	CFO, EVP &Treasurer	Sell	5,512	$32.05	$176,681.65	-5.2%
Mar 16, 2022	AMPH Amphastar Pharmaceuticals, Inc.	CFO, EVP &Treasurer	Sale+OE	50,777	$33.96	$1,724,427.37	-18.0%
Mar 15, 2022	AMPH Amphastar Pharmaceuticals, Inc.	CFO, EVP &Treasurer	Sell	7,900	$34.46	$272,248.22	-7.4%