GENB insider buying – Generate Biomedicines, Inc.
4 insider purchases since 2016 worth $75.3M by 4 different insiders. Last 12 months: 4 purchases, $75.3M. Most recent filing: 2026-03-06.
Same time range as the chart above - each mark sits under the week of the trade. Circles = purchases (height = price paid, size = amount), red triangles = open-market sales of $50k+. Prices as reported, not adjusted for later stock splits.
Purchases are open-market buys (SEC Form 4, code "P") - insiders paying with their own money. Sales are open-market sales (code "S") of $50,000 or more; many sales are pre-planned (Rule 10b5-1) or made for taxes and diversification. Each row links to the original filing.
Bought, sold, still holding?
| Insider | Bought | First / last buy | Sold since 2016 | Holds now* | Status |
|---|---|---|---|---|---|
| Flagship Pioneering Fund VI, L.P. Director | $75.0M 1× · 4,687,500 sh | 2026-03-02 2026-03-02 | – | 59,548,117 shares as of 2026-03-02 | Holds - never sold |
| Nally Michael CEO | $240,000 1× · 20,000 sh | 2026-03-04 2026-03-04 | – | 2,889,154 shares as of 2026-03-06 | Holds - never sold |
| Silvers Jason CEO | $32,000 1× · 2,000 sh | 2026-03-02 2026-03-02 | – | 1,500 shares as of 2026-03-02 | Holds - never sold |
| Mendillo Jane L Director | $24,000 1× · 1,500 sh | 2026-03-02 2026-03-02 | – | 1,500 shares as of 2026-03-02 | Holds - never sold |
* Shares held after the insider's most recent SEC filing for this company (all share classes, direct and indirect). If an insider stops filing, later changes are not known.
Insider buying and selling by year
| Year | Purchases | Bought | Buyers | Sales | Sold |
|---|---|---|---|---|---|
| 2026 | 4 | $75.3M | 4 | – | – |
Insider purchases
| Filed | Insider | Role | Shares | Avg price | Value | Holdings | Filing |
|---|---|---|---|---|---|---|---|
| 2026-03-06 | Nally Michael | CEO | 20,000 | $12.00 | $240,000 | +3.6% | SEC |
| 2026-03-02 | Silvers Jason | CEO | 2,000 | $16.00 | $32,000 | SEC | |
| 2026-03-02 | Mendillo Jane L | Director | 1,500 | $16.00 | $24,000 | SEC | |
| 2026-03-02 | Flagship Pioneering Fund VI, L.P. | Director | 4,687,500 | $16.00 | $75.0M | +44.3% | SEC |
Compiled automatically from public SEC filings. Not investment advice. Get every new insider purchase in the daily report.
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