Douglas Kerr - Jan 15, 2023 Form 4 Insider Report for Generation Bio Co. (GBIO)

Role
CHIEF MEDICAL OFFICER
Signature
/s/ Jennifer Elliott, Attorney-in-Fact
Stock symbol
GBIO
Transactions as of
Jan 15, 2023
Transactions value $
-$13,148
Form type
4
Date filed
1/18/2023, 03:52 PM
Previous filing
Oct 18, 2022
Next filing
Jan 24, 2023

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction GBIO Common Stock Options Exercise +7.44K +2.15% 354K Jan 15, 2023 Direct F1, F2
transaction GBIO Common Stock Tax liability -$13.1K -2.58K -0.73% $5.10 352K Jan 15, 2023 Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction GBIO Restricted Stock Units Options Exercise $0 -7.44K -20% $0.00 29.7K Jan 15, 2023 Common Stock 7.44K Direct F1, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Each restricted stock unit represents the right to receive one share of the company's common stock.
F2 Includes 1,865 shares acquired under the company's employee stock purchase plan since October 18, 2022.
F3 On January 21, 2022, the reporting person was granted 59,500 restricted stock units. The shares underlying the restricted stock units vest over two years, with 25% of the shares vested on July 15, 2022 and the remaining shares vesting in equal quarterly installments thereafter.