Atlas Venture Associates X, L.P. - Jun 24, 2021 Form 4 Insider Report for Generation Bio Co. (GBIO)

Role
10%+ Owner
Signature
Atlas Venture Associates X, L.P., By: Atlas Venture Associates X, LLC, Its: General Partner, By: /s/ Ommer Chohan, Chief Financial Officer
Stock symbol
GBIO
Transactions as of
Jun 24, 2021
Transactions value $
-$801,618
Form type
4
Date filed
6/28/2021, 04:56 PM
Previous filing
Jun 23, 2021
Next filing
Aug 12, 2021

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction GBIO Common Stock Sale -$692K -26.9K -86.78% $25.77* 4.09K Jun 24, 2021 Direct F1, F2, F3
transaction GBIO Common Stock Sale -$108K -4.09K -100% $26.39* 0 Jun 24, 2021 Direct F1, F3, F4
transaction GBIO Common Stock Sale -$1.29K -50 -7.51% $25.77* 616 Jun 24, 2021 See footnote F1, F2, F5
transaction GBIO Common Stock Sale -$211 -8 -1.3% $26.39* 608 Jun 24, 2021 See footnote F1, F4, F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Shares were sold pursuant to a Rule 10b5-1 trading plan dated April 20, 2021.
F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.23 to $26.21 inclusive. The Reporting Persons undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2) and (4).
F3 The shares are held directly by Atlas Venture Associates X, L.P. ("AVA X LP"). Atlas Venture Associates X, LLC ("AVA X LLC") is the general partner of AVA X LP. AVA X LLC disclaims Section 16 beneficial ownership of the securities held by AVA X LP except to the extent of its pecuniary interest therein, if any.
F4 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.23 to $26.58 inclusive.
F5 The shares are held directly by Atlas Venture Associates Opportunity I, LP ("AVAO LP"). Atlas Venture Associates Opportunity I, LLC ("AVAO LLC") is the general partner of AVAO LP. AVAO LLC disclaims Section 16 beneficial ownership of the securities held by AVAO LP except to the extent of its pecuniary interest therein, if any.