WP
William J Peters (CFO, EVP & TREASURER) filed 3 Form 4 reports in the trailing twelve months (0 purchases, 3 sales), most often in Amphastar Pharmaceuticals, Inc. (AMPH). The largest single filing was $815K of AMPH (28,631 sh across 2 lots, as filed), executed Nov 4. Data as of Nov 8 2026.
Add to watchlistReturn, ttmiAverage return per filing, trailing twelve months
–
no purchases on file
Delay-adjustediThe same average, entered at disclosure dates
–
returns measure stock purchases only
Filings, ttm
3
0 buys · 3 sells
Median delay
–
measured on stock purchases
Volume, ttmiDollar value disclosed in the trailing twelve months
$1.1M
shares × price, as filed
Last traded
Nov 5
Filed Nov 6
Median ADV $12.0M across their filed names
Open performance→Volume by month
Buys $0
Sells $1.2M
Shares × price, as filed · by filing month · past 24 months
Sectors filed on
Healthcare
3 filings
Sector per market data · by filing · past 12 months
Most traded names
AMPH
Amphastar Pharmaceuticals, Inc.
AMPH · 0 buys · 5 sells
5 filings
Recent filings
AMPHSALE
Amphastar Pharmaceuticals, Inc.
View filing →
$815K28,631 sh across 2 lots
Exec Nov 4
Filed Nov 6 · 4:17 PM ET AMPHSALE Amphastar Pharmaceuticals, Inc. View filing → $103K
4,139 sh × $25.00
Exec Sep 21
Filed Sep 23 · 6:02 PM ET AMPHSALE Amphastar Pharmaceuticals, Inc. View filing → $184K
8,180 sh × $22.48
Exec Aug 7
Filed Aug 11 · 4:57 PM ET AMPHSALE Amphastar Pharmaceuticals, Inc. View filing → $117K
4,231 sh × $27.54
Exec Mar 4 2025
Filed Mar 6 2025 · 5:30 PM ET AMPHSALE Amphastar Pharmaceuticals, Inc. View filing → $387K
7,426 sh × $52.05
Exec Nov 6 2024
Filed Nov 8 2024 · 5:30 PM ET