Generate Biomedicines, Inc. (GENB)
Nasdaq: GENB · Pharmaceutical Preparations · filing with the SEC since 2025
Who owns Generate Biomedicines, Inc.
As filed with the SECHolders of 5% or more
2
Flagship Pioneering, LLC holds 48.9% of Common Stock, $0.001 par value per share, as its SCHEDULE 13G filed May 15, 2026 says.
Directors and officers
15
report now, of 15 people on the record since 2026. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 2 named at left.
Holders of 5% or moreshare of the class, as filed
Flagship Pioneering, LLC
SCHEDULE 13G · filed May 15, 2026 · Common Stock, $0.001 par value per share
Nally Michael
SCHEDULE 13G · filed May 15, 2026 · Common Stock, $0.001 par value per share
What GENB reports owning in othersstakes of 5% or more, and other ties
Generate Biomedicines, Inc. reports no stake in another company in the record.
Insider tradesForm 4
2sales
6purchases
2sales on a scheduled plan
1people selling
$200,000sold, in dollars
$300,000bought, in dollars
Open-market trades on Form 4 from Nov 4, 2025 to Nov 4, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Nov 4, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window7 of 29 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Arnold Frances | director | 2 | $200,000 | 2 | 0 | $0 |
| Silvers Jason | President & CFO | 0 | $0 | 0 | 3 | $0 |
| Flagship Pioneering Fund Vi, L.P. | 10% owner | 0 | $0 | 0 | 3 | $75.0M |
| Nutritional Health Ltp Fund General Partner LLC | 10% owner | 0 | $0 | 0 | 3 | $75.0M |
| Nally Michael | Chief Executive Officer | 0 | $0 | 0 | 1 | $200,000 |
| Grous Beth | Chief People Officer | 0 | $0 | 0 | 1 | $0 |
| Mendillo Jane L | director | 0 | $0 | 0 | 1 | $0 |