Generate Biomedicines, Inc.
GENB- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0002100782
In the last 90 days, Generate Biomedicines, Inc. insiders filed 0 open-market purchases and 1 sale; 86 institutions reported holding it in 13F filings for Q2 2026, worth $1.69B in total; ARK Invest is the only superinvestor holding it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Generate Biomedicines, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 1 filing
- 1 insider, $16.0K in total
- Insiders trading
- 1
- Net value
- −$16.0K
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Generate Biomedicines, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Arnold Frances | Director | 231,472 | Sep 3, 2026 | 2 |
| Nally Michael | Chief Executive Officer | 572,707 | Mar 6, 2026 | 2 |
| Afeyan Noubar | Director, 10% Owner | 1,562,500Indirect | Mar 2, 2026 | 2 |
| Flagship Pioneering, LLC | 10% Owner | 1,562,500Indirect | Mar 2, 2026 | 1 |
| Flagship Pioneering Fund VI General Partner LLC | 10% Owner | 1,562,500Indirect | Mar 2, 2026 | 1 |
| Nutritional Health LTP Fund General Partner LLC | 10% Owner | 1,562,500Indirect | Mar 2, 2026 | 1 |
| Flagship Pioneering Fund VII General Partner LLC | 10% Owner | 1,562,500Indirect | Mar 2, 2026 | 1 |
| Flagship Pioneering Special Opportunities Fund II General Partner LLC | 10% Owner | 1,562,500Indirect | Mar 2, 2026 | 1 |
| FPN General Partner LLC | 10% Owner | 1,562,500Indirect | Mar 2, 2026 | 1 |
| Flagship VentureLabs VI Manager LLC | 10% Owner | 1,562,500Indirect | Mar 2, 2026 | 1 |
| Flagship Pioneering Fund VI, L.P. | 10% Owner | 1,562,500Indirect | Mar 2, 2026 | 1 |
| Flagship VentureLabs VI LLC | 10% Owner | 1,562,500Indirect | Mar 2, 2026 | 1 |
| Flagship Pioneering Special Opportunities Fund II, L.P. | 10% Owner | 1,562,500Indirect | Mar 2, 2026 | 1 |
| Nutritional Health LTP Fund, L.P. | 10% Owner | 1,562,500Indirect | Mar 2, 2026 | 1 |
| Flagship Pioneering Fund VII, L.P. | 10% Owner | 1,562,500Indirect | Mar 2, 2026 | 1 |
| FPN II, L.P. | 10% Owner | 1,562,500Indirect | Mar 2, 2026 | 1 |
| Fanucci Marsha | Director | – | Mar 2, 2026 | 1 |
| Simonian Nancy A | Director | – | Mar 2, 2026 | 1 |
| Bancel Stephane | Director | 724,160Indirect | Mar 2, 2026 | 1 |
| Martin Sean | Chief Legal Officer & GC | – | Mar 2, 2026 | 1 |
| Mendillo Jane L | Director | 1,500 | Mar 2, 2026 | 1 |
| Vessey Rupert | Director | – | Mar 2, 2026 | 1 |
| Parker Paul Gray | Director | – | Mar 2, 2026 | 1 |
| Grigoryan Gevorg | Chief Technology Officer | – | Mar 2, 2026 | 1 |
| Silvers Jason | President & CFO | 1,000Indirect | Mar 2, 2026 | 1 |
| Grous Beth | Chief People Officer | 300Indirect | Mar 2, 2026 | 1 |
| Lee Laurie Anne | Chief Medical Officer | – | Mar 2, 2026 | 1 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 3, 2026 (view filing)4:05 PM ET | Sep 1 | 2 days | Arnold FrancesDirector | SSale | −1.00K | $16.00 | −$16.0K | −0.4%231.5K after | 10b5-1 |
| Mar 6, 2026 (view filing) | Mar 4 | 2 days | Nally MichaelChief Executive Officer | PPurchase | +20.0K | $12.00 | +$240.0K | +3.6%572.7K after | |
| Mar 2, 2026 (view filing)5:52 PM ET | Mar 2 | Same day | Afeyan Noubar and 7 othersDirector, 10% Owner | PPurchase | +4.69M | $16.00 | +$75.0M | New position1.56M after | 3 lotsDuplicate filing |
| Mar 2, 2026 (view filing)5:42 PM ET | Mar 2 | Same day | Afeyan Noubar and 6 othersDirector, 10% Owner | PPurchase | +4.69M | $16.00 | +$75.0M | New position1.56M after | 3 lots |
| Mar 2, 2026 (view filing) | Mar 2 | Same day | Grous BethChief People Officer | PPurchase | +300 | $16.00 | +$4.80K | New position300 after | |
| Mar 2, 2026 (view filing) | Mar 2 | Same day | Silvers JasonPresident & CFO | PPurchase | +2.00K | $16.00 | +$32.0K | New position1.00K after | 3 lots |
| Mar 2, 2026 (view filing) | Mar 2 | Same day | Mendillo Jane LDirector | PPurchase | +1.50K | $16.00 | +$24.0K | New position1.50K after |