Donenberg Phillip B. 4

What Happened
Phillip B. Donenberg, a director of Tectonic Therapeutic, was granted a derivative award of 10,200 shares on 2026-06-09. The filing lists an acquisition price of $0.00 (no cash paid) and a total reported value of $0. This is an award/grant (not a sale or open‑market purchase) and represents a right to receive shares in the future subject to vesting.

Key Details

• Transaction date: 2026-06-09; Form 4 filed 2026-06-10 (timely filing).
• Transaction type: Award/Grant of a derivative (code A); 10,200 shares acquired at $0.00.
• Shares owned after transaction: not specified in the public Form 4 disclosure.
• Vesting note: the award vests in full on the earliest of (i) June 9, 2027, (ii) the issuer’s 2027 Annual Meeting, or (iii) a Change in Control, provided Donenberg continues service (per footnote).
• No indication of tax withholding, immediate exercise, sale, or cashless transaction in the filing.

Context
A derivative award generally means the insider received rights to future stock (e.g., options or RSUs) rather than buying shares outright. Because this is a grant, it is not an immediate bullish purchase signal—it’s part of compensation and tied to future vesting and service requirements.