Senior insider sale
AMPHASTAR PHARMACEUTICALS, INC. — senior position signals high conviction
$161.9K
7.97K shares
What this filing means
PRINS RICHARD K plans to sell 7.97K shares of AMPHASTAR PHARMACEUTICALS, INC. valued at approximately $161.9K. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.
Filed: 8/11/2026ACC: 0001969223-26-000880
Director
Since Aug 2018
7.97K
Shares to sell
$161.9K
Approx. market value
7.97K
Acquired (3 months)
1
Planned
Securities Acquired — Last 3 Months7
RSU Vesting
N/A
6/3/2025
1.57KRSU Vesting
N/A
6/5/2024
216.00RSU Vesting
N/A
6/12/2020
1.40KRSU Vesting
N/A
6/7/2020
295.00RSU Vesting
N/A
6/7/2019
2.29KRSU Vesting
N/A
6/8/2018
1.93KRSU Vesting
N/A
6/9/2017
271.00Total acquired7.97K
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
6/3/2025 | RSU Vesting N/A | 1.57K | — |
6/5/2024 | RSU Vesting N/A | 216.00 | — |
6/12/2020 | RSU Vesting N/A | 1.40K | — |
6/7/2020 | RSU Vesting N/A | 295.00 | — |
6/7/2019 | RSU Vesting N/A | 2.29K | — |
6/8/2018 | RSU Vesting N/A | 1.93K | — |
6/9/2017 | RSU Vesting N/A | 271.00 | — |
| Total | 7.97K | ||
Planned & Completed Dispositions1
NASDAQPlanned
Units to sell
7.97K
Market value
$161.9K
8/11/2026
Total
Units
7.97K
Value
$161.9K
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
8/11/2026 | 7.97K | $161.9K | NASDAQ | Planned |
| Total | 7.97K | $161.9K | ||