Amphastar Pharmaceuticals, Inc.·4

Jun 3, 8:29 PM ET

Deflin Gayle 4

4 · Amphastar Pharmaceuticals, Inc. · Filed Jun 3, 2026

Research Summary

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Amphastar (AMPH) Director Gayle Receives 25,508 RSUs

What Happened
Director Gayle received two awards on June 1, 2026 totaling 25,508 shares: 8,143 shares reported as restricted stock units (RSUs) and 17,365 shares reported as a derivative award. Both awards were recorded at $0.00 (no cash paid) on the Form 4 filed June 3, 2026. These are grants/awards (A), not open-market purchases or sales.

Key Details

  • Transaction date: 2026-06-01; Form 4 filed: 2026-06-03 (timely filing).
  • Awards: 8,143 RSUs @ $0.00; 17,365 derivative shares @ $0.00 — total 25,508 shares granted.
  • Vesting: Footnote(s) indicate the RSUs and the shares subject to the option both vest on June 1, 2027.
  • Shares owned after transaction: Not disclosed on the provided Form 4 excerpt.
  • No sale or exercise occurred; this is an equity grant (code A), not a purchase (P) or sale (S).

Context
RSUs and similar derivative awards are compensation that convert to actual shares only when they vest; they do not represent immediate market selling or buying pressure. Because no cash changed hands and the awards vest in one year, this filing documents a standard director equity grant rather than an insider market trade.

Insider Transaction Report

Form 4
Period: 2026-06-01
Deflin Gayle
Director
Transactions
  • Award

    Common Stock

    [F1]
    2026-06-01+8,14319,057 total
  • Award

    Stock Option (right to buy)

    [F2]
    2026-06-01+17,36517,365 total
    Exercise: $18.42Exp: 2036-06-01Common Stock (17,365 underlying)
Footnotes (2)
  • [F1]The reported shares are represented by restricted stock units, or RSUs, all of which vest on June 1, 2027.
  • [F2]All of the shares subject to the option vest on June 1, 2027.
Signature
/s/ Eva Wen, by power of attorney|2026-06-03

Documents

1 file
  • 4
    form4-06042026_120634.xmlPrimary