MarketPeel
Insider Trading Intelligence
Pricing
…
FL

Flagship Pioneering Special Opportunities Fund Ii, L.p.

FHTX
DIRECTOR · FOGHORN THERAPEUTICS INC. · CIK 0001761283
FILING MIX · LIFETIME58%/42%
BUYS
21
SELLS
15
TOTAL VALUE
$112.40M
COMPANIES
2
ACTIVE SINCE
Oct 2020
HOLDINGS NOW
15,937,692
AVG SELL PX
—
TRADE KIND
SHOWING 36 / 36
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
4 backtested trades · 8 horizons · 3 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Flagship Pioneering Special Opportunities Fund Ii, L.p., measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d4+0.00%-4.98%-0.81%-4.17%-4.54%—
14d4+25.00%-0.39%+0.99%-1.38%-1.24%—
30d4+50.00%-1.07%+2.22%-3.29%-4.59%—
60d4+100.00%+16.06%+6.15%+9.91%-0.42%—
90d4+100.00%+23.83%+8.57%+20.60%+15.75%—
180d4(1 pending)+66.67%+6.72%+15.94%-9.22%+12.25%—
1y4(1 pending)+0.00%-29.46%+19.67%-49.13%-44.89%—
2y4(1 pending)+0.00%-44.27%+33.15%-77.41%-84.01%—
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
FHTX · 2,235,468 shares · as of Jan 13, 2026
02,332,7204,665,4396,998,1599,330,878202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
FLOW · 21 buys / 15 sellsCOVERAGE · 22 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
GENB
GENERATE BIOMEDICINES, INC.
SALE
843,881——0Mar 2, 2026Mar 2, 2026 ↗View →
GENB
GENERATE BIOMEDICINES, INC.
PURCHASE
1,562,500$16.00$25.00M4,340,252Mar 2, 2026Mar 2, 2026 ↗View →
GENB
GENERATE BIOMEDICINES, INC.
SALE
2,953,586——0Mar 2, 2026Mar 2, 2026 ↗View →
GENB
GENERATE BIOMEDICINES, INC.
PURCHASE
1,562,500$16.00$25.00M15,264,724Mar 2, 2026Mar 2, 2026 ↗View →
GENB
GENERATE BIOMEDICINES, INC.
SALE
18,483,785——0Mar 2, 2026Mar 2, 2026 ↗View →
GENB
GENERATE BIOMEDICINES, INC.
SALE
17,016,215——0Mar 2, 2026Mar 2, 2026 ↗View →
GENB
GENERATE BIOMEDICINES, INC.
PURCHASE
12,723,940——12,723,940Mar 2, 2026Mar 2, 2026 ↗View →
GENB
GENERATE BIOMEDICINES, INC.
SALE
2,531,644——0Mar 2, 2026Mar 2, 2026 ↗View →
GENB
GENERATE BIOMEDICINES, INC.
PURCHASE
2,777,752——2,777,752Mar 2, 2026Mar 2, 2026 ↗View →
GENB
GENERATE BIOMEDICINES, INC.
PURCHASE
987,491——987,491Mar 2, 2026Mar 2, 2026 ↗View →
GENB
GENERATE BIOMEDICINES, INC.
SALE
2,109,704——0Mar 2, 2026Mar 2, 2026 ↗View →
GENB
GENERATE BIOMEDICINES, INC.
SALE
1,265,822——0Mar 2, 2026Mar 2, 2026 ↗View →
GENB
GENERATE BIOMEDICINES, INC.
SALE
1,265,822——0Mar 2, 2026Mar 2, 2026 ↗View →
GENB
GENERATE BIOMEDICINES, INC.
SALE
1,500,000——0Mar 2, 2026Mar 2, 2026 ↗View →
GENB
GENERATE BIOMEDICINES, INC.
PURCHASE
1,562,500$16.00$25.00M1,562,500Mar 2, 2026Mar 2, 2026 ↗View →
GENB
GENERATE BIOMEDICINES, INC.
SALE
2,109,704——0Mar 2, 2026Mar 2, 2026 ↗View →
GENB
GENERATE BIOMEDICINES, INC.
PURCHASE
13,702,224——13,702,224Mar 2, 2026Mar 2, 2026 ↗View →
GENB
GENERATE BIOMEDICINES, INC.
PURCHASEGRANT
Stock grant
29,561——29,561Feb 26, 2026Mar 2, 2026 ↗View →
FHTX
FOGHORN THERAPEUTICS INC.
PURCHASEGRANT
Stock grant
1,117,734——1,117,734Jan 13, 2026Jan 15, 2026 ↗View →
FHTX
FOGHORN THERAPEUTICS INC.
PURCHASEGRANT
Stock grant
1,117,734——1,117,734Jan 13, 2026Jan 15, 2026 ↗View →
FHTX
FOGHORN THERAPEUTICS INC.
PURCHASEGRANT
Stock grant
2,235,468$6.71$15.00M2,235,468Jan 13, 2026Jan 15, 2026 ↗View →
FHTX
FOGHORN THERAPEUTICS INC.
PURCHASE
1,814,914$5.51$10.00M1,814,914May 22, 2024May 24, 2024 ↗View →
FHTX
FOGHORN THERAPEUTICS INC.
PURCHASE
1,814,915$5.51$10.00M1,814,915May 22, 2024May 24, 2024 ↗View →
FHTX
FOGHORN THERAPEUTICS INC.
PURCHASE
50,000$16.00$800.0K1,491,441Oct 27, 2020Oct 29, 2020 ↗View →
FHTX
FOGHORN THERAPEUTICS INC.
SALE
8,333,333——0Oct 27, 2020Oct 29, 2020 ↗View →
FHTX
FOGHORN THERAPEUTICS INC.
PURCHASE
1,801,801——1,801,801Oct 27, 2020Oct 29, 2020 ↗View →
FHTX
FOGHORN THERAPEUTICS INC.
SALE
1,336,293——0Oct 27, 2020Oct 29, 2020 ↗View →
FHTX
FOGHORN THERAPEUTICS INC.
PURCHASE
4,504,504——8,558,558Oct 27, 2020Oct 29, 2020 ↗View →
FHTX
FOGHORN THERAPEUTICS INC.
PURCHASE
722,320——9,280,878Oct 27, 2020Oct 29, 2020 ↗View →
FHTX
FOGHORN THERAPEUTICS INC.
PURCHASE
50,000$16.00$800.0K9,330,878Oct 27, 2020Oct 29, 2020 ↗View →
FHTX
FOGHORN THERAPEUTICS INC.
PURCHASE
4,054,054——4,054,054Oct 27, 2020Oct 29, 2020 ↗View →
FHTX
FOGHORN THERAPEUTICS INC.
SALE
2,666,666——0Oct 27, 2020Oct 29, 2020 ↗View →
FHTX
FOGHORN THERAPEUTICS INC.
SALE
7,500,000——0Oct 27, 2020Oct 29, 2020 ↗View →
FHTX
FOGHORN THERAPEUTICS INC.
PURCHASE
1,441,441——1,441,441Oct 27, 2020Oct 29, 2020 ↗View →
FHTX
FOGHORN THERAPEUTICS INC.
SALE
3,333,333——0Oct 27, 2020Oct 29, 2020 ↗View →
FHTX
FOGHORN THERAPEUTICS INC.
PURCHASE
50,000$16.00$800.0K1,851,801Oct 27, 2020Oct 29, 2020 ↗View →
Other insiders · FHTX
Loading peer insiders…
About this filer
CIK 0001761283
ROLE
Director
PRIMARY
FHTX
COMPANIES
2
ACTIVE SINCE
Oct 2020
MARKETPEEL · /INSIDER/0001761283DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

The morning brief, before the bell.

One short email. Insider buys, congressional trades, and plain-English analysis.

Feedback