STEHMAN-BREEN CATHERINE

PrivateCIK: 1702233
Location

CAMBRIDGE, MA

STEHMAN-BREEN CATHERINE reported 1 transaction at GENERATION BIO CO.

Review the transaction codes below to understand the nature of each event.

InsiderSTEHMAN-BREEN CATHERINECIK 1702233
IssuerGENERATION BIO CO.CIK 1733294
Director
Since Jun 2020
-24.87K
Net shares
Net seller
$0.00
Total acquired
0
Open market trades
0B · 0S
7
Total transactions
24.87K disposed
Non-Derivative Transactions1

Common Stock

Direct
U · U

Shares

4.75K

Price / share

Trade value

% of position

New position
2/9/2026
4.75K0.00
Total

Net shares

4.75K

Net value

$0.00

Derivative Transactions6

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

3K shares

Shares

3K

Strike price

3.874

Held after

0.00

Exercisable

2/9/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

5.20K shares

Shares

5.20K

Strike price

190.00

Held after

0.00

Exercisable

2/9/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

1.50K shares

Shares

1.50K

Strike price

265.90

Held after

0.00

Exercisable

2/9/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

1.92K shares

Shares

1.92K

Strike price

61.90

Held after

0.00

Exercisable

2/9/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

2.50K shares

Shares

2.50K

Strike price

48.30

Held after

0.00

Exercisable

2/9/2026

Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

6K shares

Shares

6K

Strike price

33.20

Held after

0.00

Exercisable

2/9/2026
STEHMAN-BREEN CATHERINE — Insider Transaction (Form 4) Filed Feb 9, 2026 | Finecho