Home > Insider Trading > Filing (0001209191-21-042857)

Filing Details

Accession Number:: 0001209191-21-042857
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2021-06-23 20:26:27
Reporting Period:: 2021-06-21

Accepted Time:: 2021-06-23 20:26:27
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1733294	Generation Bio Co.	GBIO	Pharmaceutical Preparations (2834)	814301281

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1742765	Atlas Venture Associates X, Llc	300 Technology Square, 8Th Floor Cambridge MA 02139	No	No	Yes	No
1742766	Atlas Venture Associates X, L.p.	300 Technology Square, 8Th Floor Cambridge MA 02139	No	No	Yes	No
1780065	Atlas Venture Associates Opportunity I, L.p.	300 Technology Square, 8Th Floor Cambridge MA 02139	No	No	Yes	No
1780066	Atlas Venture Associates Opportunity I, Llc	300 Technology Square, 8Th Floor Cambridge MA 02139	No	No	Yes	No

Reported Non-Derivative Transactions

Show Other Fields >>

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2021-06-21	59,978	$24.82	155,708	No	4	S	Direct
Common Stock	Disposition	2021-06-21	3,796	$25.12	151,912	No	4	S	Direct
Common Stock	Disposition	2021-06-21	111	$24.82	897	No	4	S	Indirect	See footnote
Common Stock	Disposition	2021-06-21	7	$25.12	890	No	4	S	Indirect	See footnote
Common Stock	Disposition	2021-06-22	33,261	$24.76	118,651	No	4	S	Direct
Common Stock	Disposition	2021-06-22	25,208	$25.20	93,443	No	4	S	Direct
Common Stock	Disposition	2021-06-22	61	$24.76	829	No	4	S	Indirect	See footnote
Common Stock	Disposition	2021-06-22	47	$25.20	782	No	4	S	Indirect	See footnote
Common Stock	Disposition	2021-06-23	34,162	$25.08	59,281	No	4	S	Direct
Common Stock	Disposition	2021-06-23	28,331	$25.69	30,950	No	4	S	Direct
Common Stock	Disposition	2021-06-23	63	$25.08	719	No	4	S	Indirect	See footnote
Common Stock	Disposition	2021-06-23	53	$25.69	666	No	4	S	Indirect	See footnote

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Direct
No	4	S	Direct
No	4	S	Indirect	See footnote
No	4	S	Indirect	See footnote
No	4	S	Direct
No	4	S	Direct
No	4	S	Indirect	See footnote
No	4	S	Indirect	See footnote
No	4	S	Direct
No	4	S	Direct
No	4	S	Indirect	See footnote
No	4	S	Indirect	See footnote

Footnotes

Shares were sold pursuant to a Rule 10b5-1 trading plan dated April 20 ,2021.
The shares reported herein give effect to the pro rata distribution of shares by Atlas Venture Fund X, L.P. for no additional consideration to its limited partners and its and general partner, Atlas Venture Associates X, L.P. ("AVA X LP"), subsequent to the Reporting Persons' last Section 16 filing reporting ownership of the Issuer's Common Stock. As the distribution of such shares constituted only a change in the form of the Reporting Persons' ownership in such shares, the Reporting Persons were not required to report the distribution pursuant to Section 16.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.08 to $25.07 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 (3), (5), (8), (9), (10) and (11).
The shares are held directly by 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.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.08 to $25.20 inclusive.
The shares reported herein give effect to the pro rata distribution of shares by Atlas Venture Opportunity Fund I, L.P. for no additional consideration to its limited partners and its and general partner, Atlas Venture Associates Opportunity I, LP ("AVAO LP"), subsequent to the Reporting Persons' last Section 16 filing reporting ownership of the Issuer's Common Stock. As the distribution of such shares constituted only a change in the form of the Reporting Persons' ownership in such shares, the Reporting Persons were not required to report the distribution pursuant to Section 16.
The shares are held directly by 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.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.08 to $25.07 inclusive.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.10 to $25.285 inclusive.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.63 to $25.62 inclusive.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.63 to $25.95 inclusive.