Flagship Pioneering, LLC
Flagship Pioneering, LLC
Flagship Pioneering, LLC insider trades: Generate Biomedicines (GENB) stock buys and sales
Generate Biomedicines Last trade Mar 2, 2026 36 Form 4 filings
$0
Sold, last 12 months
0 sales
$75.0M
Bought, last 12 months
3 buys
42
Open-market trades
since 2007
11
Companies
last trade 2026
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Flagship Pioneering, LLC reports to the SEC
GENBGenerate Biomedicines
Insider · last filing Mar 2, 2026
+$75.0M
SANASana Biotechnology
Insider · last filing Feb 14, 2024
No market trades
SGTXSigilon Therapeutics
10% Owner · last filing Aug 15, 2023
No market trades
EVLOEvelo Biosciences
Insider · last filing Jul 13, 2023
+$52.5M
OMGAOmega Therapeutics
10% Owner · last filing Feb 27, 2023
+$59.2M
MCRBSeres Therapeutics
10% Owner · last filing Jul 7, 2022
+$27.5M
and 5 more companies
Open-market buys and sales
42 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Mar 2, 2026 | GENB | ↑ Buy | 1,562,500 | $16.00 | $25.0M | By Pioneering Medicines 02, LLC | Mar 2, 2026 (0d) |
| Mar 2, 2026 | GENB | ↑ Buy | 1,562,500 | $16.00 | $25.0M | By FPN II, L.P. | Mar 2, 2026 (0d) |
| Mar 2, 2026 | GENB | ↑ Buy | 1,562,500 | $16.00 | $25.0M | By Flagship Pioneering Fund VII, L.P. | Mar 2, 2026 (0d) |
| Jul 11, 2023 | EVLO | ↑ Buy | 3,246,753 | $2.31 | $7.5M | By Flagship Pioneering Fund VII, L.P. | Jul 13, 2023 (2d) |
| Jul 11, 2023 | EVLO | ↑ Buy | 1,082,251 | $2.31 | $2.5M | By Flagship Ventures Fund IV, L.P. | Jul 13, 2023 (2d) |
| Jul 11, 2023 | EVLO | ↑ Buy | 1,082,251 | $2.31 | $2.5M | By Nutritional Health LTP Fund, L.P. | Jul 13, 2023 (2d) |
| Feb 27, 2023 | OMGA | ↑ Buy | 1,993,986 | $5.78 | $11.5M | By Flagship Pioneering Special Opportuni | Feb 27, 2023 (0d) |
| Feb 27, 2023 | OMGA | ↑ Buy | 1,329,324 | $5.78 | $7.7M | By Flagship Pioneering Fund VII, L.P. | Feb 27, 2023 (0d) |
| Jul 5, 2022 | MCRB | ↑ Buy | 5,825,495 | $3.15 | $18.4M | By Flagship Pioneering Fund VII, L.P. | Jul 7, 2022 (2d) |
| Jul 5, 2022 | MCRB | ↑ Buy | 2,912,748 | $3.15 | $9.2M | By Nutritional Health LTP Fund, L.P. | Jul 7, 2022 (2d) |
| May 27, 2022 | EVLO | ↑ Buy | 13,698,630 | $1.46 | $20.0M | By Flagship Pioneering Fund VII, L.P. | Jun 1, 2022 (5d) |
| May 27, 2022 | EVLO | ↑ Buy | 6,849,315 | $1.46 | $10.0M | By Nutritional Health LTP Fund, L.P. | Jun 1, 2022 (5d) |
| May 27, 2022 | EVLO | ↑ Buy | 4,383,561 | $1.46 | $6.4M | By Flagship Ventures Fund IV, L.P. | Jun 1, 2022 (5d) |
| May 27, 2022 | EVLO | ↑ Buy | 1,369,863 | $1.46 | $2.0M | By Flagship Ventures Opportunities Fund | Jun 1, 2022 (5d) |
| May 27, 2022 | EVLO | ↑ Buy | 1,095,890 | $1.46 | $1.6M | By Flagship Ventures Fund IV-Rx, L.P. | Jun 1, 2022 (5d) |
| Aug 3, 2021 | OMGA | ↑ Buy | 1,176,469 | $17.00 | $20.0M | Indirect | Aug 5, 2021 (2d) |
| Aug 3, 2021 | OMGA | ↑ Buy | 1,176,469 | $17.00 | $20.0M | Indirect | Aug 5, 2021 (2d) |
| Oct 27, 2020 | FHTX | ↑ Buy | 150,000 | $16.00 | $2.4M | Indirect | Oct 29, 2020 (2d) |
| Mar 4, 2019 | KLDO | ↑ Buy | 933,333 | $15.00 | $14.0M | Indirect | Mar 6, 2019 (2d) |
| Jul 27, 2015 | BGMD | ↓ Sell | 4,980 | $2.27 | $11K | Held by Applied Genomic Technology Capit | Jul 29, 2015 (2d) |
| Jul 27, 2015 | BGMD | ↓ Sell | 302 | $2.27 | $686 | Held by AGTC Advisors Fund, L.P. | Jul 29, 2015 (2d) |
| Dec 3, 2014 | BGMD | ↓ Sell | 2,463 | $0.46 | $1K | Held by NewcoGen Equity Investors LLC | Dec 5, 2014 (2d) |
| Dec 3, 2014 | BGMD | ↓ Sell | 1,848 | $0.46 | $850 | Held by NewcoGen Group LLC | Dec 5, 2014 (2d) |
| Dec 3, 2014 | BGMD | ↓ Sell | 260 | $0.46 | $120 | Held by NewcoGen-Long Reign Holding LLC | Dec 5, 2014 (2d) |
| Dec 3, 2014 | BGMD | ↓ Sell | 257 | $0.46 | $118 | Held by ST NewcoGen LLC | Dec 5, 2014 (2d) |
| Jan 30, 2013 | BGMD | ↑ Buy | 1,050,000 | $2.00 | $2.1M | By Flagship Ventures Fund 2007, L.P. | Feb 1, 2013 (2d) |
| Jan 30, 2013 | BGMD | ↑ Buy | 500,000 | $2.00 | $1.0M | By Applied Genomic Technology Capital Fu | Feb 1, 2013 (2d) |
| Jan 30, 2013 | BGMD | ↑ Buy | 250,000 | $2.00 | $500K | By NewcoGen Group LLC | Feb 1, 2013 (2d) |
| Jan 30, 2013 | BGMD | ↑ Buy | 125,000 | $2.00 | $250K | By NewcoGen Equity Investors LLC | Feb 1, 2013 (2d) |
| Jan 30, 2013 | BGMD | ↑ Buy | 75,000 | $2.00 | $150K | By AGTC Advisors Fund, L.P. | Feb 1, 2013 (2d) |
| Aug 20, 2012 | BGMD | ↓ Sell | 82 | $5.83 | $478 | By NewcoGen-Elan LLC | Aug 22, 2012 (2d) |
| May 21, 2012 | BGMD | ↓ Sell | 141 | $3.95 | $557 | By NewcoGen-PE LLC | May 23, 2012 (2d) |
| Feb 9, 2011 | BGMD | ↑ Buy | 714,286 | $7.00 | $5.0M | By Flagship Ventures Fund 2007, L.P. | Feb 11, 2011 (2d) |
| Feb 9, 2011 | BGMD | ↑ Buy | 271,429 | $7.00 | $1.9M | By Applied Genomic Technology Capital Fu | Feb 11, 2011 (2d) |
| Feb 9, 2011 | BGMD | ↑ Buy | 42,858 | $7.00 | $300K | By NewcoGen Group LLC | Feb 11, 2011 (2d) |
| Feb 9, 2011 | BGMD | ↑ Buy | 35,715 | $7.00 | $250K | By NewcoGen Equity Investors LLC | Feb 11, 2011 (2d) |
| Feb 9, 2011 | BGMD | ↑ Buy | 21,428 | $7.00 | $150K | By NewcoGen-Long Reign Holding LLC | Feb 11, 2011 (2d) |
| Feb 9, 2011 | BGMD | ↑ Buy | 21,428 | $7.00 | $150K | By ST NewcoGen LLC | Feb 11, 2011 (2d) |
| Feb 9, 2011 | BGMD | ↑ Buy | 14,285 | $7.00 | $100K | By AGTC Advisors Fund, L.P. | Feb 11, 2011 (2d) |
| Feb 9, 2011 | BGMD | ↑ Buy | 10,714 | $7.00 | $75K | By NewcoGen-Elan LLC | Feb 11, 2011 (2d) |
| Feb 9, 2011 | BGMD | ↑ Buy | 10,714 | $7.00 | $75K | By NewcoGen-PE LLC | Feb 11, 2011 (2d) |
| May 30, 2007 | HLCS | ↑ Buy | 222,222 | $9.00 | $2.0M | Indirect | May 31, 2007 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other GENB insiders
Open-market trades in the last 12 months
Frances Arnold
Insider
2 sales
Oct 29, 2026
Michael Nally
Chief Executive Officer
1 buy
Mar 4, 2026
Jane L Mendillo
Insider
1 buy
Mar 2, 2026
Flagship Pioneering Fund VI General Partner LLC
Insider
1 buy
Mar 2, 2026
Flagship VentureLabs VI LLC
Insider
1 buy
Mar 2, 2026
Flagship Pioneering Special Opportunities Fund II, L.P.
Insider
1 buy
Mar 2, 2026
Flagship Pioneering Fund VI, L.P.
Insider
1 buy
Mar 2, 2026
Noubar Afeyan
Insider
2 buys
Mar 2, 2026
About Flagship Pioneering, LLC's insider trades
Flagship Pioneering, LLC is an insider at Generate Biomedicines (GENB). Since May 30, 2007, it has reported 34 open-market purchases worth $244.6M and 8 sales worth $15K on SEC Form 4. In the last 12 months: 3 buys ($75.0M).
Its filings also include other transactions (16 filings), conversions (11 filings), option exercises (8 filings), grants and awards (5 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every GENB insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.