VINK PATRICK V.J.J. 4

What Happened

• Patrick V. J. J. Vink, a director of Spero Therapeutics (SPRO), was granted compensation awards on June 23, 2026: 10,000 restricted stock units (RSUs) and 20,000 derivative awards (option-related). Both grants were reported with an acquisition price of $0.00 (no cash paid at grant).

Key Details

• Transaction date: 2026-06-23; Form 4 filed: 2026-06-25 (timely filing).
• 10,000 RSUs (F1) — each RSU converts to one share on vesting; vesting date: June 23, 2027, subject to continued service.
• 20,000 derivative/option-related award (F2) — the shares underlying this option will vest and become exercisable in full on June 23, 2027, subject to continued service.
• Reported acquisition price: $0.00 for both awards (total cash paid at grant = $0).
• Shares owned after the transaction: not specified in the provided filing excerpt.

Context

• These transactions are grants/awards (compensation), not open-market purchases or sales — common for director compensation and do not represent an immediate market trade.
• The RSUs convert to common stock only upon vesting; the derivative award/option becomes exercisable on the stated vesting date. No immediate sale or exercise was reported.