William Peters sold $815K of Amphastar Pharmaceuticals stock
By AlphaYouPublished Form 4
PETERS WILLIAM J
Reporting filer
William Peters reported selling 28,631 shares of Amphastar Pharmaceuticals, Inc. for about $815K ($28.45 a share on average). Form 4 filed Nov 6, 2026 lists 6 entries.
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- Disclosed
- Nov 6, 2026
Reported details
6 entries| Security | Owner | Date | Code | Action | Quantity | Price | Following holdings | Reporting delay | Filed terms and references |
|---|---|---|---|---|---|---|---|---|---|
| Common Stock | PETERS WILLIAM J | 2026-11-04 | M | Exercise or conversion | 16000 | 13.03 | 184,707 | 2 days | Filed terms
|
| Common Stock | PETERS WILLIAM J | 2026-11-04 | S | Sale | 16000 | 28.03 | 168,707 | 2 days | Filed terms
|
| Common Stock | PETERS WILLIAM J | 2026-11-05 | M | Exercise or conversion | 11000 | 17.99 | 179,707 | 1 day | Filed terms
|
| Common Stock | PETERS WILLIAM J | 2026-11-05 | S | Sale | 12631 | 28.9913 | 167,076 | 1 day | Filed terms
|
| Employee Stock Option (right to buy) (derivative) | PETERS WILLIAM J | 2026-11-04 | M | Exercise or conversion | 16000 | 0 | 7,674 | 2 days | Filed terms
|
| Employee Stock Option (right to buy) (derivative) | PETERS WILLIAM J | 2026-11-05 | M | Exercise or conversion | 11000 | 0 | 67,833 | 1 day | Filed terms
|
Common Stock
- Owner
- PETERS WILLIAM J
- Date
- 2026-11-04
- Code
- M
- Action
- Exercise or conversion
- Quantity
- 16000
- Price
- 13.03
- Following holdings
- 184,707
- Reporting delay
- 2 days
- Filed terms and references
Filed terms
- security Title: Common Stock
- transaction Date: 2026-11-04
- transaction Form Type: 4
- transaction Code: M
- equity Swap Involved: 0
- transaction Shares: 16000
- transaction Price Per Share: 13.03
- transaction Acquired Disposed Code: A
- shares Owned Following Transaction: 184707
- direct Or Indirect Ownership: D
- nature Of Ownership:
Common Stock
- Owner
- PETERS WILLIAM J
- Date
- 2026-11-04
- Code
- S
- Action
- Sale
- Quantity
- 16000
- Price
- 28.03
- Following holdings
- 168,707
- Reporting delay
- 2 days
- Filed terms and references
Filed terms
- security Title: Common Stock
- transaction Date: 2026-11-04
- transaction Form Type: 4
- transaction Code: S
- equity Swap Involved: 0
- id: F1
- transaction Shares: 16000
- transaction Price Per Share: 28.03
- transaction Acquired Disposed Code: D
- shares Owned Following Transaction: 168707
- direct Or Indirect Ownership: D
- nature Of Ownership:
Common Stock
- Owner
- PETERS WILLIAM J
- Date
- 2026-11-05
- Code
- M
- Action
- Exercise or conversion
- Quantity
- 11000
- Price
- 17.99
- Following holdings
- 179,707
- Reporting delay
- 1 day
- Filed terms and references
Filed terms
- security Title: Common Stock
- transaction Date: 2026-11-05
- transaction Form Type: 4
- transaction Code: M
- equity Swap Involved: 0
- transaction Shares: 11000
- transaction Price Per Share: 17.99
- transaction Acquired Disposed Code: A
- shares Owned Following Transaction: 179707
- direct Or Indirect Ownership: D
- nature Of Ownership:
Common Stock
- Owner
- PETERS WILLIAM J
- Date
- 2026-11-05
- Code
- S
- Action
- Sale
- Quantity
- 12631
- Price
- 28.9913
- Following holdings
- 167,076
- Reporting delay
- 1 day
- Filed terms and references
Filed terms
- security Title: Common Stock
- transaction Date: 2026-11-05
- transaction Form Type: 4
- transaction Code: S
- equity Swap Involved: 0
- id: F1
- transaction Shares: 12631
- transaction Price Per Share: 28.9913
- id: F2
- transaction Acquired Disposed Code: D
- shares Owned Following Transaction: 167076
- direct Or Indirect Ownership: D
- nature Of Ownership:
Employee Stock Option (right to buy) (derivative)
- Owner
- PETERS WILLIAM J
- Date
- 2026-11-04
- Code
- M
- Action
- Exercise or conversion
- Quantity
- 16000
- Price
- 0
- Following holdings
- 7,674
- Reporting delay
- 2 days
- Filed terms and references
Filed terms
- security Title: Employee Stock Option (right to buy)
- conversion Or Exercise Price: 13.03
- transaction Date: 2026-11-04
- transaction Form Type: 4
- transaction Code: M
- equity Swap Involved: 0
- transaction Shares: 16000
- transaction Price Per Share: 0
- transaction Acquired Disposed Code: D
- id: F3
- expiration Date: 2030-03-16
- underlying Security Title: Common Stock
- underlying Security Shares: 16000
- shares Owned Following Transaction: 7674
- direct Or Indirect Ownership: D
- nature Of Ownership:
Employee Stock Option (right to buy) (derivative)
- Owner
- PETERS WILLIAM J
- Date
- 2026-11-05
- Code
- M
- Action
- Exercise or conversion
- Quantity
- 11000
- Price
- 0
- Following holdings
- 67,833
- Reporting delay
- 1 day
- Filed terms and references
Filed terms
- security Title: Employee Stock Option (right to buy)
- conversion Or Exercise Price: 17.99
- transaction Date: 2026-11-05
- transaction Form Type: 4
- transaction Code: M
- equity Swap Involved: 0
- transaction Shares: 11000
- transaction Price Per Share: 0
- transaction Acquired Disposed Code: D
- id: F3
- expiration Date: 2031-03-17
- underlying Security Title: Common Stock
- underlying Security Shares: 11000
- shares Owned Following Transaction: 67833
- direct Or Indirect Ownership: D
- nature Of Ownership:
Purchases, sales, grants and option exercises are different transactions. The reported code identifies the action; it does not establish a motive.
Filing context
- Quantities and prices are shown in the units filed. No trade value is inferred from their product.
- PETERS WILLIAM J: CFO, EVP & TREASURER, Director.
- The filing reports a Rule 10b5-1 trading plan.
- F1: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 10, 2026.
- F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $28.99 to $29.00, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
- F3: Shares subject to the option are fully vested and immediately exercisable.
Original sources
Prepared automatically from public filing data. Report a correction.