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$GBIO All transactions

Generation Bio Co.

M

$ Value

$0

Shares

395

Price

$0

Filed

Jan 16

Insider

Name

MCDONOUGH GEOFF

Title

CIK

0001732701

Roles

Director

Transaction Details

Transaction Date

2026-01-15

Code

M

Table

Derivative

Ownership

Direct

Equity Swap

No

Shares After

1,582

Footnotes

Each restricted stock unit represents the right to receive one share of the company's common stock. | The securities are directly held by the McDonough Family 2018 Irrevocable Trust, or the 2018 Trust. The reporting person is the settlor of the 2018 Trust, Allison L. McDonough and David S. Grayzel are trustees for the 2018 Trust, and the 2018 Trust is for the benefit of Graeme and Owen McDonough. The reporting person may be deemed to beneficially own the shares of common stock owned by the 2018 Trust. | The securities are directly held by the McDonough Family 2020 Irrevocable Trust, or the 2020 Trust. The reporting person is the settlor of the 2020 Trust, Allison L. McDonough and David S. Grayzel are trustees for the 2020 Trust, and the 2020 Trust is for the benefit of Allison, Graeme and Owen McDonough. The reporting person may be deemed to beneficially own the shares of common stock owned by the 2020 Trust. | On January 20, 2023, the reporting person was granted 8,437 restricted stock units. The shares underlying the restricted stock units vest over two years, with 25% of the shares vesting on July 15, 2022 and the remaining shares vesting in equal quarterly installments thereafter.

Filing Info

Accession No.

0001732701-26-000002

Form Type

4

Issuer CIK

0001733294

MCDONOUGH GEOFF's History

Date Ticker Type Value
2026-02-09 GBIO U
2026-02-09 GBIO U
2026-02-09 GBIO U
2026-02-09 GBIO D
2026-02-09 GBIO D
2026-02-09 GBIO D
2026-02-09 GBIO D
2026-02-09 GBIO D
2026-02-09 GBIO D
2026-02-09 GBIO D

Other Insiders at GBIO (90d)

Insider Bought Sold Last
JONAS JEFFREY M 2026-02-09
Rowland Charles A Jr 2026-02-09
Christensen Gustav 2026-02-09
Quinn Anthony G. 2026-02-09
Rhodes Jason P 2026-02-09
Atlas Venture Fund X, L.P. 2026-02-09
Cooper Ronald Harold Wilfred 2026-02-09
Stehman-Breen Catherine 2026-02-09
MCDONOUGH GEOFF 2026-02-09
Nicholson Donald William 2026-02-09
Howze Yalonda
INTERIM CEO & PRESIDENT
2026-02-02
Howze Yalonda
INTERIM CEO AND PRESIDENT
2026-02-09
Appelhans Dannielle 2026-02-09
Conway Kevin John
CHIEF FINANCIAL OFFICER
2026-02-09
Conway Kevin John
Chief Financial Officer
2026-02-02