Amphastar director granted RSUs and stock options
Amphastar Pharmaceuticals director Richard K. Prins reported new equity awards and prior gifting activity.
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Form Type
4
Rhea-AI Filing Summary
Amphastar Pharmaceuticals director Richard K. Prins reported new equity awards and prior gifting activity. On June 1, 2026 he received 8,143 shares of Common Stock in the form of restricted stock units, all vesting on June 1, 2027, and a stock option for 17,365 shares at an exercise price of $18.42 per share that also vests on June 1, 2027 and expires on June 1, 2036. A previously reported bona fide gift on August 19, 2024 transferred 1,500 shares of Common Stock. Following the latest transactions, he beneficially owned 37,598 shares as of June 1, 2026 after an account reconciliation noted in the filing.
Insider Trade Summary
1,500 shares gifted
Gift
3 txns
Insider
PRINS RICHARD K
Role
Director
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Grant/Award | Stock Option (right to buy) | 17,365 | $0.00 | $0.00 |
| Grant/Award | Common Stock | 8,143 | $0.00 | $0.00 |
| Gift | Common Stock | 1,500 | $0.00 | $0.00 |
Holdings After Transaction:
Stock Option (right to buy) — 17,365 contracts (Direct);
Common Stock — 37,598 shares (Direct)
Footnotes (3)
- F1. The number of shares beneficially owned following the reported transaction is as of June 1, 2026 and has been reduced by 4,228 shares to reflect a reconciliation to the reporting person's account records.
- F2. The reported shares are represented by restricted stock units, or RSUs, all of which vest on June 1, 2027.
- F3. All of the shares subject to the option vest on June 1, 2027.
Key Figures
RSU grant: 8,143 shares
Option grant size: 17,365 shares
Option exercise price: $18.42/share
+3 more
6 metrics
RSU grant
8,143 shares
Restricted stock units vesting on June 1, 2027
Option grant size
17,365 shares
Stock option covering Common Stock granted June 1, 2026
Option exercise price
$18.42/share
Exercise price for 17,365-share stock option
Option expiration
June 1, 2036
Expiration date of granted stock option
Gifted shares
1,500 shares
Bona fide gift of Common Stock on August 19, 2024
Shares owned after grants
37,598 shares
Beneficially owned as of June 1, 2026 after reconciliation
Key Terms
restricted stock units, RSUs, Stock Option (right to buy), bona fide gift, +1 more
5 terms
restricted stock units financial
"The reported shares are represented by restricted stock units, or RSUs, all of which vest on June 1, 2027."
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
RSUs financial
"The reported shares are represented by restricted stock units, or RSUs, all of which vest on June 1, 2027."
RSUs, or restricted stock units, are a form of company shares given to employees as part of their compensation. They are typically awarded with certain restrictions, such as a waiting period before they can be fully owned or sold, similar to earning a gift that becomes fully yours over time. For investors, RSUs can impact a company's stock offerings and reflect how much the company relies on stock-based incentives to attract and retain talent.
Stock Option (right to buy) financial
"Stock Option (right to buy) with 17,365.0000 shares at a conversion or exercise price of 18.4200."
bona fide gift financial
"The transaction code G is described as a Bona fide gift for 1,500.0000 shares of Common Stock."
A bona fide gift is a genuine, voluntary transfer of money, property, or benefits from one party to another made without expectation of repayment, services, or hidden conditions. Investors care because such gifts can affect company disclosures, related‑party transaction rules, tax treatment, and perceived conflicts of interest; think of it like someone giving you a present with no strings attached — but on a corporate scale, auditors and regulators need to verify it really is unconditional.
beneficially owned financial
"The number of shares beneficially owned following the reported transaction is as of June 1, 2026 and has been reduced by 4,228 shares."
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What insider transactions did Amphastar (AMPH) director Richard K. Prins report?
Richard K. Prins reported equity compensation grants and a prior gift. He received 8,143 restricted stock units and a stock option for 17,365 shares, and earlier gifted 1,500 shares. These filings reflect routine director compensation and a bona fide charitable-style transfer.
How many restricted stock units did the Amphastar (AMPH) director receive and when do they vest?
He received 8,143 shares represented by restricted stock units. All these RSUs vest on June 1, 2027, meaning he must remain eligible until that date before the award fully converts into unrestricted Amphastar Common Stock under the reported terms.
What are the terms of the new stock option grant reported for Amphastar (AMPH)?
The director was granted a stock option covering 17,365 shares of Amphastar Common Stock at an exercise price of $18.42 per share. All option shares vest on June 1, 2027 and the option expires on June 1, 2036, providing a long-dated equity incentive.
What are Richard K. Prins’s Amphastar (AMPH) holdings after these transactions?
After the reported transactions, he beneficially owned 37,598 shares of Amphastar Common Stock as of June 1, 2026. This figure reflects a reconciliation that reduced his prior total by 4,228 shares to align with his account records, according to the filing footnote.
Are the new Amphastar (AMPH) equity awards immediately exercisable or unrestricted?
No. The reported 8,143 restricted stock units and the option for 17,365 shares are subject to vesting. Both the RSUs and all option shares vest on June 1, 2027, so they become fully available only after that vesting date is reached.
AI-generated analysis. How Rhea-AI works. Not financial advice.
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