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Generation Bio Co. (0001733294)
SIC: 2834 - Pharmaceutical Preparations
State location: MA | State of Inc.: DE | Fiscal Year End: 1231
formerly: Generation Bio Co. (until 2025-04-23)
Business Address
301 BINNEY STREET
CAMBRIDGE MA 02142
857-529-5908
Mailing Address
301 BINNEY STREET
CAMBRIDGE MA 02142
Ownership Reports from: (Click on owner name to see other issuer holdings for the owner, or CIK for owner filings.)

Owner Filings Transaction Date Type of Owner
Conway Kevin John 0002051408 2025-01-10 officer: Chief Financial Officer
Howze Yalonda 0001828153 2023-04-05 officer: CHIEF LEGAL OFFICER
Samayoa Phillip 0001946316 2022-09-16 officer: CHIEF STRATEGY OFFICER
Appelhans Dannielle 0001874962 2022-07-15 director
Paone Antoinette 0001907682 2022-02-10 officer: CHIEF OPERATING OFFICER
Cooper Ronald Harold Wilfred 0001676880 2021-03-01 director
Zimmermann Tracy 0001830668 2020-11-09 officer: Chief Development Officer
Norkunas Matthew 0001816836 2020-07-22 officer: Chief Financial Officer
FARALLON CAPITAL MANAGEMENT LLC 0000909661 2020-06-11 10 percent owner, other: Manager of ZHH LLC
DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) 0001009258 2020-06-11 10 percent owner, other: Possible Member of 10% Group
Deerfield Mgmt L.P. 0001010823 2020-06-11 10 percent owner, other: Possible Member of 10% Group
FARALLON PARTNERS L L C/CA 0001040153 2020-06-11 10 percent owner, other: Farallon General Partner
JONAS JEFFREY M 0001042021 2020-06-11 director
Artal Group S.A. 0001053906 2020-06-11 10 percent owner
Artal International S.C.A. 0001218180 2020-06-11 10 percent owner
WEHRLY MARK C 0001245635 2020-06-11 10 percent owner, other: Managing Member
FRIED RICHARD B 0001245637 2020-06-11 10 percent owner, other: Managing Member
PATEL RAJIV A 0001275110 2020-06-11 10 percent owner, other: Managing Member
Westend S.A. 0001283968 2020-06-11 10 percent owner
DEERFIELD PARTNERS, L.P. 0001301041 2020-06-11 10 percent owner, other: Possible Member of 10% Group
Invus Public Equities Advisors, LLC 0001340096 2020-06-11 10 percent owner
Invus Public Equities, L.P. 0001340097 2020-06-11 10 percent owner
Flynn James E 0001352546 2020-06-11 10 percent owner, other: Possible Member of 10% Group
Spokes Andrew J M 0001372968 2020-06-11 10 percent owner, other: Managing Member
Rowland Charles A Jr 0001383292 2020-06-11 director
Christensen Gustav 0001397709 2020-06-11 director
DiPalma Stephen J. 0001426479 2020-06-11 officer: See Remarks
Roberts Thomas G. Jr. 0001453042 2020-06-11 10 percent owner, other: Managing Member
Minne Pascal 0001460839 2020-06-11 10 percent owner
Stichting Administratiekantoor Westend 0001460840 2020-06-11 10 percent owner
Linn Michael G 0001495856 2020-06-11 10 percent owner, other: Managing Member
Warren John R. 0001509711 2020-06-11 10 percent owner, other: Managing Member
Artal International Management S.A. 0001522131 2020-06-11 10 percent owner
Quinn Anthony G. 0001532219 2020-06-11 director
Casdin Capital, LLC 0001534261 2020-06-11 10 percent owner
Casdin Eli 0001534264 2020-06-11 10 percent owner
Rhodes Jason P 0001577014 2020-06-11 director
Kim David T 0001595643 2020-06-11 10 percent owner, other: Managing Member
Fisch Michael B. 0001611816 2020-06-11 10 percent owner, other: Managing Member
Atlas Venture Fund X, L.P. 0001628098 2020-06-11 10 percent owner
Seybold William 0001693980 2020-06-11 10 percent owner, other: Member of Group Owning 10%
Dreyfuss Philip D 0001693981 2020-06-11 10 percent owner, other: Managing Member
Stehman-Breen Catherine 0001702233 2020-06-11 director
MCDONOUGH GEOFF 0001732701 2020-06-11 director, 10 percent owner, officer: See Remarks
Atlas Venture Associates X, LLC 0001742765 2020-06-11 10 percent owner
ATLAS VENTURE ASSOCIATES X, L.P. 0001742766 2020-06-11 10 percent owner
Atlas Venture Opportunity Fund I, L.P. 0001759241 2020-06-11 10 percent owner
Artal Treasury Ltd 0001766952 2020-06-11 10 percent owner
Atlas Venture Associates Opportunity I, L.P. 0001780065 2020-06-11 10 percent owner
Atlas Venture Associates Opportunity I, LLC 0001780066 2020-06-11 10 percent owner
Wellington Biomedical Innovation Master Investors (Cayman) I L.P. 0001787092 2020-06-11 10 percent owner
Kerr Douglas 0001814189 2020-06-11 officer: Chief Development Officer
Stanton Matthew 0001814198 2020-06-11 officer: Chief Scientific Officer
Angelino Mark D. 0001814308 2020-06-11 officer: Chief Operating Officer
Nicholson Donald William 0001814617 2020-06-11 director
Zone Healthcare Holdings, LLC 0001814952 2020-06-11 10 percent owner, other: Member of Group Owning 10%


Items 1 - 80

The information presented below contains only portions of the information presented in the referenced filing or filings.
You should consult the original filing for complete information. Hyperlinks to the forms are provided for your convenience.

Acquistion or Disposition Transaction Date Deemed Execution Date Reporting Owner Form Transaction Type Direct or Indirect Ownership Number of Securities Transacted Number of Securities Owned Line Number Owner CIK Security Name
D 2025-04-15   Samayoa Phillip 4 M-Exempt --D 1147.0000 8023.0000 3 0001946316 Restricted Stock Units
D 2025-04-15   Samayoa Phillip 4 F-InKind --D 337.0000 128519.0000 2 0001946316 Common Stock
A 2025-04-15   Samayoa Phillip 4 M-Exempt --D 1147.0000 128856.0000 1 0001946316 Common Stock
D 2025-04-15   MCDONOUGH GEOFF 4 M-Exempt --D 5274.0000 36911.0000 5 0001732701 Restricted Stock Units
D 2025-04-15   MCDONOUGH GEOFF 4 F-InKind --D 1548.0000 1349664.0000 2 0001732701 Common Stock
A 2025-04-15   MCDONOUGH GEOFF 4 M-Exempt --D 5274.0000 1351212.0000 1 0001732701 Common Stock
D 2025-04-15   Paone Antoinette 4 M-Exempt --D 1592.0000 11140.0000 3 0001907682 Restricted Stock Units
D 2025-04-15   Paone Antoinette 4 F-InKind --D 468.0000 23082.0000 2 0001907682 Common Stock
A 2025-04-15   Paone Antoinette 4 M-Exempt --D 1592.0000 23550.0000 1 0001907682 Common Stock
D 2025-04-15   Howze Yalonda 4 M-Exempt --D 3347.0000 26774.0000 3 0001828153 Restricted Stock Units
D 2025-04-15   Howze Yalonda 4 F-InKind --D 983.0000 18737.0000 2 0001828153 Common Stock
A 2025-04-15   Howze Yalonda 4 M-Exempt --D 3347.0000 19720.0000 1 0001828153 Common Stock
D 2025-04-15   Conway Kevin John 4 M-Exempt --D 587.0000 4107.0000 3 0002051408 Restricted Stock Units
D 2025-04-15   Conway Kevin John 4 F-InKind --D 173.0000 17859.0000 2 0002051408 Common Stock
A 2025-04-15   Conway Kevin John 4 M-Exempt --D 587.0000 18032.0000 1 0002051408 Common Stock
D 2025-01-15   Conway Kevin John 4 M-Exempt --D 587.0000 4694.0000 3 0002051408 Restricted Stock Units
D 2025-01-15   Conway Kevin John 4 F-InKind --D 204.0000 17445.0000 2 0002051408 Common Stock
A 2025-01-15   Conway Kevin John 4 M-Exempt --D 587.0000 17649.0000 1 0002051408 Common Stock
D 2025-01-15   Howze Yalonda 4 M-Exempt --D 3347.0000 30121.0000 3 0001828153 Restricted Stock Units
D 2025-01-15   Howze Yalonda 4 F-InKind --D 1160.0000 16373.0000 2 0001828153 Common Stock
A 2025-01-15   Howze Yalonda 4 M-Exempt --D 3347.0000 17533.0000 1 0001828153 Common Stock
D 2025-01-15   Paone Antoinette 4 M-Exempt --D 1592.0000 12732.0000 3 0001907682 Restricted Stock Units
D 2025-01-15   Paone Antoinette 4 F-InKind --D 552.0000 21958.0000 2 0001907682 Common Stock
A 2025-01-15   Paone Antoinette 4 M-Exempt --D 1592.0000 22510.0000 1 0001907682 Common Stock
D 2025-01-15   Samayoa Phillip 4 M-Exempt --D 1147.0000 9170.0000 3 0001946316 Restricted Stock Units
D 2025-01-15   Samayoa Phillip 4 F-InKind --D 398.0000 127709.0000 2 0001946316 Common Stock
A 2025-01-15   Samayoa Phillip 4 M-Exempt --D 1147.0000 128107.0000 1 0001946316 Common Stock
D 2025-01-15   MCDONOUGH GEOFF 4 M-Exempt --D 5274.0000 42185.0000 5 0001732701 Restricted Stock Units
D 2025-01-15   MCDONOUGH GEOFF 4 F-InKind --D 1828.0000 1345938.0000 2 0001732701 Common Stock
A 2025-01-15   MCDONOUGH GEOFF 4 M-Exempt --D 5274.0000 1347766.0000 1 0001732701 Common Stock
A 2025-01-13   Quinn Anthony G. 4 P-Purchase --D 85000.0000 299286.0000 2 0001532219 Common Stock
A 2025-01-10   Conway Kevin John 4 A-Award --D 355260.0000 355260.0000 1 0002051408 Stock Option (right to buy)
A 2025-01-10   Quinn Anthony G. 4 P-Purchase --D 125791.0000 214286.0000 1 0001532219 Common Stock
A 2025-01-10   Samayoa Phillip 4 A-Award --D 251030.0000 251030.0000 2 0001946316 Stock Option (right to buy)
A 2025-01-10   Paone Antoinette 4 A-Award --D 251030.0000 251030.0000 2 0001907682 Stock Option (right to buy)
A 2025-01-10   MCDONOUGH GEOFF 4 A-Award --D 901690.0000 901690.0000 4 0001732701 Stock Option (right to buy)
A 2025-01-10   Howze Yalonda 4 A-Award --D 251030.0000 251030.0000 1 0001828153 Stock Option (Right to Buy)
D 2024-10-15   Stanton Matthew 4 M-Exempt --D 1674.0000 15059.0000 3 0001814198 Restricted Stock Units
D 2024-10-15   Stanton Matthew 4 F-InKind --D 492.0000 247319.0000 2 0001814198 Common Stock
A 2024-10-15   Stanton Matthew 4 M-Exempt --D 1674.0000 247811.0000 1 0001814198 Common Stock
D 2024-10-15   Samayoa Phillip 4 M-Exempt --D 1147.0000 10317.0000 3 0001946316 Restricted Stock Units
D 2024-10-15   Samayoa Phillip 4 F-InKind --D 337.0000 122097.0000 2 0001946316 Common Stock
A 2024-10-15   Samayoa Phillip 4 M-Exempt --D 1147.0000 122434.0000 1 0001946316 Common Stock
D 2024-10-15   Norkunas Matthew 4 M-Exempt --D 1673.0000 1673.0000 6 0001816836 Restricted Stock Units
D 2024-10-15   Norkunas Matthew 4 M-Exempt --D 1674.0000 15059.0000 5 0001816836 Restricted Stock Units
D 2024-10-15   Norkunas Matthew 4 F-InKind --D 492.0000 57348.0000 4 0001816836 Common Stock
A 2024-10-15   Norkunas Matthew 4 M-Exempt --D 1673.0000 57840.0000 3 0001816836 Common Stock
D 2024-10-15   Norkunas Matthew 4 F-InKind --D 492.0000 56167.0000 2 0001816836 Common Stock
A 2024-10-15   Norkunas Matthew 4 M-Exempt --D 1674.0000 56659.0000 1 0001816836 Common Stock
D 2024-10-15   MCDONOUGH GEOFF 4 M-Exempt --D 5274.0000 47459.0000 5 0001732701 Restricted Stock Units
D 2024-10-15   MCDONOUGH GEOFF 4 F-InKind --D 1548.0000 1337629.0000 2 0001732701 Common Stock
A 2024-10-15   MCDONOUGH GEOFF 4 M-Exempt --D 5274.0000 1339177.0000 1 0001732701 Common Stock
D 2024-10-15   Howze Yalonda 4 M-Exempt --D 3347.0000 33468.0000 3 0001828153 Restricted Stock Units
D 2024-10-15   Howze Yalonda 4 F-InKind --D 983.0000 14186.0000 2 0001828153 Common Stock
A 2024-10-15   Howze Yalonda 4 M-Exempt --D 3347.0000 15169.0000 1 0001828153 Common Stock
D 2024-10-15   Paone Antoinette 4 M-Exempt --D 1592.0000 14324.0000 3 0001907682 Restricted Stock Units
D 2024-10-15   Paone Antoinette 4 F-InKind --D 468.0000 16055.0000 2 0001907682 Common Stock
A 2024-10-15   Paone Antoinette 4 M-Exempt --D 1592.0000 16523.0000 1 0001907682 Common Stock
D 2024-07-15   Howze Yalonda 4 M-Exempt --D 3347.0000 36815.0000 3 0001828153 Restricted Stock Units
D 2024-07-15   Howze Yalonda 4 F-InKind --D 983.0000 11822.0000 2 0001828153 Common Stock
A 2024-07-15   Howze Yalonda 4 M-Exempt --D 3347.0000 12805.0000 1 0001828153 Common Stock
D 2024-07-15   Norkunas Matthew 4 M-Exempt --D 1673.0000 3346.0000 6 0001816836 Restricted Stock Units
D 2024-07-15   Norkunas Matthew 4 M-Exempt --D 1674.0000 16733.0000 5 0001816836 Restricted Stock Units
D 2024-07-15   Norkunas Matthew 4 F-InKind --D 492.0000 54985.0000 4 0001816836 Common Stock
A 2024-07-15   Norkunas Matthew 4 M-Exempt --D 1673.0000 55477.0000 3 0001816836 Common Stock
D 2024-07-15   Norkunas Matthew 4 F-InKind --D 492.0000 53804.0000 2 0001816836 Common Stock
A 2024-07-15   Norkunas Matthew 4 M-Exempt --D 1674.0000 54296.0000 1 0001816836 Common Stock
D 2024-07-15   Samayoa Phillip 4 M-Exempt --D 1147.0000 11464.0000 3 0001946316 Restricted Stock Units
D 2024-07-15   Samayoa Phillip 4 F-InKind --D 337.0000 121287.0000 2 0001946316 Common Stock
A 2024-07-15   Samayoa Phillip 4 M-Exempt --D 1147.0000 121624.0000 1 0001946316 Common Stock
D 2024-07-15   MCDONOUGH GEOFF 4 M-Exempt --D 5274.0000 52733.0000 5 0001732701 Restricted Stock Units
D 2024-07-15   MCDONOUGH GEOFF 4 F-InKind --D 1548.0000 1333903.0000 2 0001732701 Common Stock
A 2024-07-15   MCDONOUGH GEOFF 4 M-Exempt --D 5274.0000 1335451.0000 1 0001732701 Common Stock
D 2024-07-15   Paone Antoinette 4 M-Exempt --D 1592.0000 15916.0000 3 0001907682 Restricted Stock Units
D 2024-07-15   Paone Antoinette 4 F-InKind --D 468.0000 14931.0000 2 0001907682 Common Stock
A 2024-07-15   Paone Antoinette 4 M-Exempt --D 1592.0000 15399.0000 1 0001907682 Common Stock
D 2024-07-15   Stanton Matthew 4 M-Exempt --D 1674.0000 16733.0000 3 0001814198 Restricted Stock Units
D 2024-07-15   Stanton Matthew 4 F-InKind --D 492.0000 246137.0000 2 0001814198 Common Stock
A 2024-07-15   Stanton Matthew 4 M-Exempt --D 1674.0000 246629.0000 1 0001814198 Common Stock
D 2024-07-01   Paone Antoinette 4 S-Sale --D 6719.0000 13807.0000 1 0001907682 Common Stock

http://www.sec.gov/cgi-bin/own-disp


Modified: 04/22/2016