Generate Biomedicines Insider Trades
NASDAQ: GENBHealth CareBiotechnology: Pharmaceutical PreparationsUSD
14.34+0.35 (+2.50%)
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Last 12 months
- Purchases
- 12 · $150.30M
- Sales
- 1 · $16.00K
- Shares bought / sold
- 9.40M / 1.00K
- Net activity
- Net buying $150.3 million
Generate Biomedicines insider activity
Over the last 12 months, Generate Biomedicines insiders reported 25 transactions on SEC Form 4: 12 open-market purchases and 1 sale. Insiders bought $150.3 million and sold $16,002 worth of stock, for net insider buying of $150.3 million. The largest seller was ARNOLD FRANCES, with $16,002 in reported sales.
The most recent filing shows ARNOLD FRANCES (Director) selling 1,000 shares at $16.00 on Sep 1, 2026. Insider sales are common for compensation, tax and diversification reasons, while open-market purchases are rarer; tracking both helps put GENB's ownership changes in context.
Summary generated from market data by MetaCap's automated system. Methodology
GENB insider transactions
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| Sep 1, 2026 | ARNOLD FRANCESDirector | Sale | 1,000 | $16.00K | Form 4 |
| Mar 4, 2026 | Nally MichaelChief Executive Officer | Buy | 20,000 | $240.00K | Form 4 |
| Mar 2, 2026 | AFEYAN NOUBAR & Flagship VentureLabs VI LLC & Flagship Pioneering Fund VI, L.P. & Flagship Pioneering Fund VII, L.P. & Nutritional Health LTP Fund, L.P. & Flagship Pioneering Special Opportunities Fund II, L.P. & FPN II, L.P.Director | Buy | 1,562,500 | $25.00M | Form 4 |
| Mar 2, 2026 | AFEYAN NOUBAR & Flagship VentureLabs VI LLC & Flagship Pioneering Fund VI, L.P. & Flagship Pioneering Fund VII, L.P. & Nutritional Health LTP Fund, L.P. & Flagship Pioneering Special Opportunities Fund II, L.P. & FPN II, L.P.Director | Buy | 1,562,500 | $25.00M | Form 4 |
| Mar 2, 2026 | AFEYAN NOUBAR & Flagship VentureLabs VI LLC & Flagship Pioneering Fund VI, L.P. & Flagship Pioneering Fund VII, L.P. & Nutritional Health LTP Fund, L.P. & Flagship Pioneering Special Opportunities Fund II, L.P. & FPN II, L.P.Director | Buy | 1,562,500 | $25.00M | Form 4 |
| Mar 2, 2026 | AFEYAN NOUBAR & Flagship VentureLabs VI LLC & Flagship Pioneering Fund VI, L.P. & Flagship Pioneering Fund VII, L.P. & Nutritional Health LTP Fund, L.P. & Flagship Pioneering Special Opportunities Fund II, L.P. & FPN II, L.P.Director | Conversion | 2,777,752 | — | Form 4 |
| Mar 2, 2026 | AFEYAN NOUBAR & Flagship VentureLabs VI LLC & Flagship Pioneering Fund VI, L.P. & Flagship Pioneering Fund VII, L.P. & Nutritional Health LTP Fund, L.P. & Flagship Pioneering Special Opportunities Fund II, L.P. & FPN II, L.P.Director | Conversion | 2,777,752 | — | Form 4 |
| Mar 2, 2026 | AFEYAN NOUBAR & Flagship VentureLabs VI LLC & Flagship Pioneering Fund VI, L.P. & Flagship Pioneering Fund VII, L.P. & Nutritional Health LTP Fund, L.P. & Flagship Pioneering Special Opportunities Fund II, L.P. & FPN II, L.P.Director | Conversion | 987,491 | — | Form 4 |
| Mar 2, 2026 | AFEYAN NOUBAR & Flagship VentureLabs VI LLC & Flagship Pioneering Fund VI, L.P. & Flagship Pioneering Fund VII, L.P. & Nutritional Health LTP Fund, L.P. & Flagship Pioneering Special Opportunities Fund II, L.P. & FPN II, L.P.Director | Conversion | 13,702,224 | — | Form 4 |
| Mar 2, 2026 | AFEYAN NOUBAR & Flagship VentureLabs VI LLC & Flagship Pioneering Fund VI, L.P. & Flagship Pioneering Fund VII, L.P. & Nutritional Health LTP Fund, L.P. & Flagship Pioneering Special Opportunities Fund II, L.P. & FPN II, L.P.Director | Conversion | 12,723,940 | — | Form 4 |
| Mar 2, 2026 | Bancel StephaneDirector | Conversion | 724,160 | — | Form 4 |
| Mar 2, 2026 | Nally MichaelChief Executive Officer | Conversion | 658,327 | — | Form 4 |
| Mar 2, 2026 | Mendillo Jane LDirector | Buy | 1,500 | $24.00K | Form 4 |
| Mar 2, 2026 | AFEYAN NOUBAR & Flagship Pioneering, LLC & Flagship VentureLabs VI Manager LLC & Flagship Pioneering Fund VI General Partner LLC & Flagship Pioneering Fund VII General Partner LLC & Nutritional Health LTP Fund General Partner LLC & Flagship Pioneering Special Opportunities Fund II General Partner LLC & FPN General Partner LLCDirector | Buy | 1,562,500 | $25.00M | Form 4 |
| Mar 2, 2026 | AFEYAN NOUBAR & Flagship Pioneering, LLC & Flagship VentureLabs VI Manager LLC & Flagship Pioneering Fund VI General Partner LLC & Flagship Pioneering Fund VII General Partner LLC & Nutritional Health LTP Fund General Partner LLC & Flagship Pioneering Special Opportunities Fund II General Partner LLC & FPN General Partner LLCDirector | Buy | 1,562,500 | $25.00M | Form 4 |
| Mar 2, 2026 | AFEYAN NOUBAR & Flagship Pioneering, LLC & Flagship VentureLabs VI Manager LLC & Flagship Pioneering Fund VI General Partner LLC & Flagship Pioneering Fund VII General Partner LLC & Nutritional Health LTP Fund General Partner LLC & Flagship Pioneering Special Opportunities Fund II General Partner LLC & FPN General Partner LLCDirector | Buy | 1,562,500 | $25.00M | Form 4 |
| Mar 2, 2026 | AFEYAN NOUBAR & Flagship Pioneering, LLC & Flagship VentureLabs VI Manager LLC & Flagship Pioneering Fund VI General Partner LLC & Flagship Pioneering Fund VII General Partner LLC & Nutritional Health LTP Fund General Partner LLC & Flagship Pioneering Special Opportunities Fund II General Partner LLC & FPN General Partner LLCDirector | Conversion | 2,777,752 | — | Form 4 |
| Mar 2, 2026 | AFEYAN NOUBAR & Flagship Pioneering, LLC & Flagship VentureLabs VI Manager LLC & Flagship Pioneering Fund VI General Partner LLC & Flagship Pioneering Fund VII General Partner LLC & Nutritional Health LTP Fund General Partner LLC & Flagship Pioneering Special Opportunities Fund II General Partner LLC & FPN General Partner LLCDirector | Conversion | 2,777,752 | — | Form 4 |
| Mar 2, 2026 | AFEYAN NOUBAR & Flagship Pioneering, LLC & Flagship VentureLabs VI Manager LLC & Flagship Pioneering Fund VI General Partner LLC & Flagship Pioneering Fund VII General Partner LLC & Nutritional Health LTP Fund General Partner LLC & Flagship Pioneering Special Opportunities Fund II General Partner LLC & FPN General Partner LLCDirector | Conversion | 987,491 | — | Form 4 |
| Mar 2, 2026 | AFEYAN NOUBAR & Flagship Pioneering, LLC & Flagship VentureLabs VI Manager LLC & Flagship Pioneering Fund VI General Partner LLC & Flagship Pioneering Fund VII General Partner LLC & Nutritional Health LTP Fund General Partner LLC & Flagship Pioneering Special Opportunities Fund II General Partner LLC & FPN General Partner LLCDirector | Conversion | 13,702,224 | — | Form 4 |
| Mar 2, 2026 | AFEYAN NOUBAR & Flagship Pioneering, LLC & Flagship VentureLabs VI Manager LLC & Flagship Pioneering Fund VI General Partner LLC & Flagship Pioneering Fund VII General Partner LLC & Nutritional Health LTP Fund General Partner LLC & Flagship Pioneering Special Opportunities Fund II General Partner LLC & FPN General Partner LLCDirector | Conversion | 12,723,940 | — | Form 4 |
| Mar 2, 2026 | Silvers JasonPresident & CFO | Buy | 1,000 | $16.00K | Form 4 |
| Mar 2, 2026 | Silvers JasonPresident & CFO | Buy | 500 | $8.00K | Form 4 |
| Mar 2, 2026 | Silvers JasonPresident & CFO | Buy | 500 | $8.00K | Form 4 |
| Mar 2, 2026 | Grous BethChief People Officer | Buy | 300 | $4.80K | Form 4 |
Transaction codes follow SEC Form 4: P = open-market purchase, S = open-market sale, A = grant or award, M = option exercise, F = shares withheld for taxes. About Form 4