Generate Biomedicines, Inc. - Common Stock, $0.001 par value per share (GENB)

CUSIP: 370920100

Q1 2026 13F Holders as of 31 Mar 2026

Holder snapshot 5 signals
Share change
+92,674,382
SEC-reported price per share
$12.50
Number of holders
57
Value change
+$1,155,506,583
Number of buys
54
Security identity Names, identifiers, and filing context for this profile. 1 source field
Shares outstanding
128,224,775

Security key

370920100

Report period

Q1 2026

Institutions

57

Top holders

10

Ownership snapshot

Top reported holders of GENB - Generate Biomedicines, Inc. - Common Stock, $0.001 par value per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
Flagship Pioneering, LLC
Disclosed value leader
Flagship Pioneering, LLC
Comparable rows
2/15
Latest evidence
31 Mar 2026
13D/G 3/4/5 Lead comparable stake: 49% 13 rows are not safely comparable across share classes. 13D/G row: Flagship Pioneering, LLC Showing 1-6 of 15 holder rows.

Quick read

Flagship Pioneering, LLC leads the comparable SEC ownership view at 49%.

2 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Flagship Pioneering, LLC's linked filing trail.
Comparable ownership Top 2
Flagship Pioneering, LLC 49%
Michael Nally 5.2%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
Flagship Pioneering, LLC
13D/G
Afeyan Noubar
49%
$802,584,512
62,701,915 shares
$0 31 Mar 2026
Michael Nally
13D/G 3/4/5
Nally Michael · Chief Executive Officer, Director
5.2%
$88,563,853
6,919,051 shares
$0 31 Mar 2026
Ph.D. Noubar B. Afeyan
3/4/5
Director, 10%+ Owner
mixed-class rows
62,702,678 shares
mixed-class rows
26 Feb 2026
Pioneering Medicines 02, LLC
3/4/5
10%+ Owner
class O/S missing
1,562,500 shares
02 Mar 2026
Stephane Bancel
3/4/5
Director
mixed-class rows
1,214,550 shares
mixed-class rows
26 Feb 2026
Gevorg Grigoryan
3/4/5
Chief Technology Officer
mixed-class rows
856,341 shares
mixed-class rows
26 Feb 2026
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2026

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions
57
Shares
92,824,382
Rows available
57
Investor Option Weight % Change % SEC-reported value * Price Shares Share Change Activity Report Period

* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2026 vs Q1 2026 Across Filers

Q1 2026 holders
57
Q1 2026 holders
57
Holder diff
0
Investor Q1 2026 Shares Q1 2026 Shares Share Diff Share Chg % Q1 2026 value Q1 2026 value Value change Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
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