Santos David A 4

What Happened

• David A. Santos, Executive Vice President and Chief Commercial Officer of Rigel Pharmaceuticals (RIGL), had 3,546 shares withheld to satisfy tax obligations tied to an equity event. The withheld shares are reported at $34.62 each, totaling $122,763.
• This filing reflects a tax withholding (transaction code F) — not an open-market sale or new purchase — and is typically a routine administrative action following option exercise or restricted share vesting.

Key Details

• Transaction date: 2026-02-10; Filing date: 2026-02-12 (filed within the Form 4 two-business-day window — timely).
• Price per share: $34.62; Shares withheld/disposed: 3,546; Total value: $122,763.
• Transaction code: F (payment of exercise price or tax liability — shares withheld to cover taxes).
• Shares owned after the transaction: not specified in the provided filing excerpt.
• No indication this was an open-market sale; appears to be net share withholding for tax purposes.

Context

• Tax-withholding dispositions (code F) are common when executives exercise options or when restricted stock vests; companies often withhold shares to cover withholding tax rather than selling shares on the open market.
• These actions are generally administrative and do not necessarily signal insider sentiment about the company’s prospects.