Liawatidewi Yakob 4

What Happened

• Liawatidewi Yakob, EVP Corporate Administration Center and a company director at Amphastar Pharmaceuticals (AMPH), had 965 shares withheld to satisfy tax liability related to restricted stock units (RSUs) that vested. The withheld shares were recorded as a disposition at $19.96 per share, totaling $19,261, on March 4, 2026. This is a routine tax-withholding action (code F), not an open-market sale for investment purposes.

Key Details

• Transaction date: 2026-03-04; Price: $19.96 per share; Total value: $19,261.
• Transaction type/code: Tax withholding on RSU vesting (F).
• Shares owned after the transaction: Not specified in the Form 4 filing.
• Footnotes of note:
  • F1: Shares were withheld to satisfy the reporting person’s tax liability on RSU vesting.
  • F2: Reported holdings include 545 shares acquired under the Issuer’s 2014 Employee Stock Purchase Plan (acquired May 31, 2025).
  • F3: Some reported shares are held of record by the Yakob and Sunmoon Trust (reporting person is a trustee).
• Filing: Form 4 filed on 2026-03-06 for a 2026-03-04 transaction — filed within the normal SEC reporting window.

Context

• This was a "sell-to-cover" style withholding to pay taxes on vested RSUs, not a discretionary open-market sale; such withholdings are routine and generally not interpreted as a directional trade signal. The filing includes notes about ESPP shares and trust-held shares that describe how some holdings are held of record.