Olivier Loeillot sold $977K of RGEN stock

Olivier Loeillot, Chief Executive Officer of Repligen Corp (RGEN), sold 5,426 shares of RGEN stock worth $977K, per an SEC Form 4 filed Sep 22, 2026.

The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.

The trade happened on Sep 21, 2026, 1 day before it was made public.

RGEN has moved -7.9% since the trade date, from $180.71 to $166.52 (Nov 12, 2026 close).