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Peters William J insider trades
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Peters William J insider trades

Peters William J has filed 46 Form 4s with the SEC that we hold, all for Amphastar Pharmaceuticals, Inc. (AMPH), as CFO, EVP & TREASURER, Director. Across all of them we count 0 purchases worth $0 and 44 sales worth $19.9M reported on Form 4. In the last 12 months: 0 purchases ($0) and 2 sales ($287.4K). The largest single trade was a sale of 60,684 shares of Amphastar Pharmaceuticals, Inc. worth $3.1M, dated 2023-09-06. Of 1 sale filed since we began reading the 10b5-1 checkbox, 1 (100%) was marked as made under a 10b5-1 trading plan. The first filing on our record is dated 2021-07-08 and the latest 2026-09-23.

Amphastar Pharmaceuticals, Inc. (AMPH)

CFO, EVP & TREASURER, Director · 46 filings · 44 purchases and sales
Trade dateCodeSharesValue as filedFiled
2021-07-07S, sale reported on Form 410,000$203.7K2021-07-08
2021-08-16S, sale reported on Form 46,589$127.5K2021-08-17
2021-11-11S, sale reported on Form 410,000$213.3K2021-11-12
2021-12-16S, sale reported on Form 41,744$39.1K2021-12-17
2021-12-21S, sale reported on Form 48,256$184.9K2021-12-22
2021-12-30S, sale reported on Form 410,000$234.0K2022-01-04
2022-01-07S, sale reported on Form 420,000$483.0K2022-01-11
2022-01-07S, sale reported on Form 411,776$293.2K2022-01-11
2022-01-10S, sale reported on Form 416,000$406.4K2022-01-11
2022-02-08S, sale reported on Form 410,000$269.5K2022-02-09
2022-02-25S, sale reported on Form 412,000$347.4K2022-03-01
2022-02-25S, sale reported on Form 411,000$307.4K2022-03-01
2022-03-07S, sale reported on Form 413,026$382.3K2022-03-09
2022-03-15S, sale reported on Form 47,900$272.2K2022-03-17
2022-03-16S, sale reported on Form 447,017$1.6M2022-03-18
2022-03-16S, sale reported on Form 43,760$129.2K2022-03-18
2022-06-17S, sale reported on Form 45,512$176.7K2022-06-22
2022-06-30S, sale reported on Form 418,386$642.6K2022-07-01
2022-08-09S, sale reported on Form 410,000$383.5K2022-08-10
2023-03-01S, sale reported on Form 410,974$398.7K2023-03-03
2023-03-15S, sale reported on Form 412,776$465.4K2023-03-17
2023-04-10S, sale reported on Form 410,032$404.8K2023-04-12
2023-04-13S, sale reported on Form 44,868$206.2K2023-04-14
2023-04-17S, sale reported on Form 45,632$238.5K2023-04-18
2023-05-18S, sale reported on Form 410,500$465.7K2023-05-22
2023-06-02S, sale reported on Form 411,000$509.9K2023-06-05
2023-06-15S, sale reported on Form 412,000$609.5K2023-06-20
2023-06-15S, sale reported on Form 413,000$686.3K2023-06-20
2023-06-15S, sale reported on Form 411,868$579.0K2023-06-20
2023-09-06S, sale reported on Form 459$3.1K2023-09-08
2023-09-06S, sale reported on Form 460,684$3.1M2023-09-08
2023-11-14S, sale reported on Form 414,868$840.5K2023-11-16
2023-11-14S, sale reported on Form 414,220$778.7K2023-11-16
2023-11-14S, sale reported on Form 430,162$1.7M2023-11-16
2024-03-06S, sale reported on Form 413,404$620.6K2024-03-08
2024-03-06S, sale reported on Form 451$2.4K2024-03-08
2024-03-06S, sale reported on Form 44,681$219.9K2024-03-08
2024-06-27S, sale reported on Form 4635$26.2K2024-06-28
2024-06-27S, sale reported on Form 42,961$121.0K2024-06-28
2024-07-31S, sale reported on Form 410,282$454.8K2024-08-02
2024-11-06S, sale reported on Form 47,426$386.5K2024-11-08
2025-03-04S, sale reported on Form 44,231$116.5K2025-03-06
2026-08-07S, sale reported on Form 48,180$183.9K2026-08-11
2026-09-21S, sale reported on Form 44,139$103.5K2026-09-23
Source

Counted from the Form 4 filings this reporting owner (SEC CIK 1263136) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.

Source: U.S. Securities and Exchange Commission (EDGAR) and other official government data · Updated 2026-10-12 · For informational purposes only, not investment advice.
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