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$3.61M

Net Activity-660,493

Bought: 0Sold: 660.5K

Showing 10 filings (page 4)

Date	Ticker	Role	Type	Shares	Price	Value	Chg%
Mar 15, 2021	AMPH Amphastar Pharmaceuticals, Inc.	CFO, SVP &Treasurer	Sell	4,244	$19.03	$80,745.07	-4.7%
Jan 19, 2021	AMPH Amphastar Pharmaceuticals, Inc.	CFO, SVP &Treasurer	Sell	6,495	$18.67	$121,236.97	-6.8%
Aug 14, 2020	AMPH Amphastar Pharmaceuticals, Inc.	CFO, SVP &Treasurer	Sell	5,512	$20.36	$112,223.22	-5.4%
Jul 6, 2020	AMPH Amphastar Pharmaceuticals, Inc.	CFO, SVP &Treasurer	Sale+OE	13,656	$22.00	$300,404.69	-11.9%
Mar 13, 2020	AMPH Amphastar Pharmaceuticals, Inc.	CFO, SVP &Treasurer	Sell	4,701	$13.94	$65,538.67	-3.0%
Jan 21, 2020	AMPH Amphastar Pharmaceuticals, Inc.	CFO, SVP &Treasurer	Sell	3,990	$20.07	$80,070.52	-4.8%
Sep 16, 2019	AMPH Amphastar Pharmaceuticals, Inc.	CFO, SVP &Treasurer	Sale+OE	9,800	$21.76	$213,255.84	-10.6%
Aug 15, 2019	AMPH Amphastar Pharmaceuticals, Inc.	CFO, SVP &Treasurer	Sell	4,942	$21.00	$103,782.00	-5.7%
Mar 4, 2019	AMPH Amphastar Pharmaceuticals, Inc.	CFO, SVP &Treasurer	Sale+OE	1,500	$25.36	$38,036.55	-1.9%
Feb 15, 2019	AMPH Amphastar Pharmaceuticals, Inc.	CFO, SVP &Treasurer	Sale+OE	10,016	$24.37	$244,089.92	-11.7%