MCDONOUGH GEOFF

PrivateCIK: 1732701
Location

CAMBRIDGE, MA

MCDONOUGH GEOFF (See Remarks) exercised options at GENERATION BIO CO.

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 1 exercise
InsiderMCDONOUGH GEOFFCIK 1732701
IssuerGENERATION BIO CO.CIK 1733294
DirectorOfficer10% Owner· See Remarks
Since Jun 2020
-1.55K
Net shares
Net seller
$659.45
Total sold
0
Open market trades
0B · 0S
3
Total transactions
5.27K acquired · 6.82K disposed
Non-Derivative Transactions2

Common Stock

Direct
M · Option Exercise

Shares

+5.27K

Price / share

Trade value

% of position

0.4%
7/15/2025
1.36M1.37M

Common Stock

Direct
F · Tax Withholding

Shares

1.55K

Price / share

$0.43

Trade value

$659.45

% of position

0.1%
7/15/2025
1.37M1.36M
Total

Net shares

+3.73K

Net value

-$659.45

Derivative Transactions1

Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

5.27K shares

Shares

5.27K

Strike price

Held after

31.64K

Exercisable

7/15/2025
Non-Derivative Holdings (Post-Transaction)2

Common Stock

Indirect
Shares owned226.46K

Common Stock

Indirect
Shares owned275K
Total
501.46K indirect501.46K
Derivative Holdings (Post-Transaction)0
No derivative holdings reported
MCDONOUGH GEOFF — Insider Transaction (Form 4) Filed Jul 17, 2025 | Finecho