McNamara Peter 4

What Happened

• Peter McNamara, Chief Scientific Officer of Tectonic Therapeutic (TECX), had 1,748 shares withheld (disposed) by the issuer on Feb 4, 2026 to satisfy tax withholding related to the vesting/settlement of restricted stock units. The shares were valued at $23.22 each for a total of $40,589.
• This was a tax-withholding share disposition (transaction code F), not an open-market sale initiated by the insider.

Key Details

• Transaction date and price: Feb 4, 2026 — 1,748 shares @ $23.22, total ~$40,589.
• Shares owned after transaction: Not disclosed in the information provided in this filing.
• Footnote: The shares were withheld by the issuer to satisfy the reporting person’s tax withholding obligations from RSUs granted on Feb 4, 2025 (see footnote F1).
• Timeliness: The Form 4 was filed Feb 10, 2026 for a Feb 4 transaction — filed six days later, which is beyond the standard two-business-day filing window for Form 4s.

Context

• This was a routine tax-withholding event tied to RSU vesting (cashless/share-withholding), not a voluntary sale for cash; such withholdings are common and generally do not by themselves indicate a change in insider sentiment.
• For retail investors, purchases are usually more informative about insider confidence than routine withholdings like this one.