Pax Margaret 4

What Happened

• Margaret Pax, a director of Repligen Corporation (RGEN), received equity awards on May 14, 2026: 995 restricted stock units (RSUs) and a derivative award of 2,239 units, for a total of 3,234 contingent shares. Both awards were granted at $0.00 for reporting purposes (no cash purchase). These are awards/grants (code A) and not open-market purchases or sales.

Key Details

• Transaction date: May 14, 2026; Form 4 filed: May 18, 2026 (timely within the 2-business-day requirement).
• Grant amounts: 995 RSUs (F1) and 2,239 derivative units (reported as A/derivative); total = 3,234 potential shares.
• Reported acquisition price/value: $0.00 (standard for RSU grants reported as contingent awards).
• Shares owned after transaction: not specified in the information provided in this summary.
• Footnotes: F1 clarifies the 995 units are RSUs — each is a contingent right to one share and will be settled only in shares; F2 states the awards vest in full on the earlier of May 14, 2027, one year from grant, or the next annual shareholders’ meeting (date not yet determined).

Context

• RSUs are contingent awards that convert to actual shares only upon vesting; they do not represent immediate free-trading stock and are generally used for compensation/retention.
• Because these are grants (not purchases or sales), they are routine compensation-related insider transactions and should not be interpreted alone as a market sentiment signal.