Companies / Generation Bio Co.

Generation Bio Co.

GBIOCIK 1733294CAMBRIDGE, MA

Financials · FY2024

Revenue$19.89M
Net income$-131.67M
Total debt—
Cash$21.94M
Diluted EPS$-1.98
Shares outstanding6.7M

Ownership

6.7M shares outstanding · as of Oct 31, 2025
7.4%10%+ / strategic
Ownership
10%+ / strategic7.38%497,255
Public float92.62%6,240,644

% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.

Insiders 18

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Insider% of sharesShares
Appelhans DannielleDirector
0.00%0
Atlas Venture Fund X, L.P.10% owner
0.00%0
Christensen GustavDirector
0.00%0
Conway Kevin JohnFormerCHIEF FINANCIAL OFFICER
0.00%0
Cooper Ronald Harold WilfredFormerDirector
0.00%0
Howze YalondaCEOFormerINTERIM CEO AND PRESIDENT
0.00%0
McDonough GeoffDirector
0.00%0
Nicholson Donald WilliamFormerDirector
0.00%0
Quinn Anthony G.Director
0.00%0
Rhodes Jason PDirector
0.00%0

Institutional holders 0

HolderValue% of shares
No institutional holders on file.

Activity

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InsidersInstitutions
Who's accumulating and trimming this stock (13F).
No activity matches these filters.

5%+ ownership events

Schedule 13D / 13G
FilerStance% of classSharesDate
Renaissance Technologies LLCPassive13G/A—287,614—
Baselake Partners, LPPassive13G/A———
T. Rowe Price Associates, Inc.Passive13G/A—209,641—
Baselake Partners, LPPassive13G———