Kollender Richard S 4

What Happened

• Richard S. Kollender, a director of Rapid Micro Biosystems, was granted two awards on May 21, 2026: 19,300 restricted stock units (RSUs) and a derivative award covering 38,700 shares. Both grants are reported at an acquisition price of $0.00 (no cash paid at grant).
• These were awards (compensation), not open-market purchases or sales; they do not represent an immediate cash transaction or sale of shares.

Key Details

• Transaction date: 2026-05-21; filing date: 2026-05-26 (filed within required timeframe accounting for the Memorial Day holiday).
• Reported price: $0.00 for both the 19,300 RSUs and the 38,700-share derivative award.
• Shares owned after the transaction: not specified in the provided filing.
• Footnotes from the filing:
  • F1: The 19,300 RSUs vest in full on the earlier of (i) the first anniversary of the grant date or (ii) the day before the next annual stockholders’ meeting, provided Kollender remains in continuous service.
  • F2: The derivative award (an option-like grant) vests and becomes exercisable in full on the same schedule (earlier of one-year anniversary or day before the next annual meeting), subject to continuous service.
• Transaction code: A (award/grant); derivative award noted separately in the filing.

Context

• RSUs convert into actual shares only upon vesting; the derivative award must vest and be exercised to become shares. Neither grant represents an immediate sale or purchase in the market.
• Director awards are commonly used for compensation and retention; they do not, by themselves, indicate insider buying or selling intent.