REICIN ALISE 4

What Happened
Alise Reicin, CEO of Tectonic Therapeutic (TECX), had 924 shares withheld by the company to satisfy tax withholding obligations upon the vesting/settlement of restricted stock units. The shares were valued at $30.34 each for a total of $28,034. This is a tax-withholding disposition (routine) tied to RSU settlement rather than a voluntary open-market sale.

Key Details

• Transaction date: 2026-06-20; filing date: 2026-06-23 (appears to be within the typical 2-business-day Form 4 window).
• Transaction type/code: F — shares withheld to satisfy tax withholding on RSU vesting.
• Shares withheld/disposed: 924 at $30.34; total value $28,034.
• Shares owned after transaction: not specified in the provided filing.
• Footnotes: F1 notes withholding to satisfy tax withholding for RSUs granted December 4, 2024. F2 notes some shares are held by the Reicin-Boiarsky Family Trust; Reicin may be deemed to share voting/dispositive power but disclaims beneficial ownership except for any pecuniary interest.

Context
This was a routine tax-withholding event on RSU settlement (a common cashless-like mechanism), not a voluntary directional trade signal. Such withholdings do not necessarily indicate the insider's view of the company's stock.