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Filing Details

Accession Number:: 0001415889-24-005124
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2024-02-23 18:58:32
Reporting Period:: 2024-02-21

Accepted Time:: 2024-02-23 18:58:32
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1818794	Dyne Therapeutics Inc.	DYN	()	DE

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1708269	Atlas Venture Fund Xi, L.p.	300 Technology Square, 8Th Floor Cambridge MA 02139	No	No	No	No
1759241	Atlas Venture Opportunity Fund I, 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
1780067	Atlas Venture Associates Xi, Llc	300 Technology Square, 8Th Floor Cambridge MA 02139	No	No	Yes	No
1780068	Atlas Venture Associates Xi, L.p.	300 Technology Square, 8Th Floor Cambridge MA 02139	No	No	Yes	No
1885327	Atlas Venture Opportunity Fund Ii, L.p.	300 Technology Square, 8Th Floor Cambridge MA 02139	No	No	Yes	No
1935810	Atlas Venture Associates Opportunity Ii, Llc	300 Technology Square, 8Th Floor Cambridge MA 02139	No	No	Yes	No
1935814	Atlas Venture Associates Opportunity Ii, Lp	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	2024-02-21	149,337	$22.44	6,666,628	No	4	S	Direct
Common Stock	Disposition	2024-02-21	35,164	$23.14	6,631,464	No	4	S	Direct
Common Stock	Disposition	2024-02-22	119,360	$22.66	6,512,104	No	4	S	Direct
Common Stock	Disposition	2024-02-23	159,542	$22.70	6,352,562	No	4	S	Direct
Common Stock	Disposition	2024-02-23	23,648	$22.70	1,585,137	No	4	S	Indirect	See footnote
Common Stock	Disposition	2024-02-23	13,738	$22.70	920,843	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	Direct
No	4	S	Direct
No	4	S	Indirect	See footnote
No	4	S	Indirect	See footnote

Footnotes

This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by Atlas Venture Fund XI, L.P. on January 10, 2024.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $21.75 to $22.72 inclusive. The Reporting Persons undertake 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), (4), (5) and (6).
The shares are held directly by Atlas Venture Fund XI, L.P. ("Atlas Venture Fund XI"). The general partner of Atlas Venture Fund XI is Atlas Venture Associates XI, L.P. ("AVA XI LP"). Atlas Venture Associates XI, LLC ("AVA XI LLC") is the general partner of AVA XI LP. Each of AVA XI LP and AVA XI LLC disclaims Section 16 beneficial ownership of the securities held by Atlas Venture Fund XI, 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 $22.7625 to $23.3899 inclusive.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $22.17 to $23.1566 inclusive.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $22.205 to $22.92 inclusive.
This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by Atlas Venture Opportunity Fund I, L.P. on January 10, 2024.
The shares are held directly by Atlas Venture Opportunity Fund I, L.P. ("AVOF I"). The general partner of AVOF I is Atlas Venture Associates Opportunity I, L.P. ("AVAO I LP"). Atlas Venture Associates Opportunity I, LLC ("AVAO I LLC") is the general partner of AVAO I LP. Each of AVAO I LP and AVAO I LLC disclaims Section 16 beneficial ownership of the securities held by AVOF I, except to the extent of its pecuniary interest therein, if any.
This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by Atlas Venture Opportunity Fund II, L.P. on January 10, 2024.
The shares are owned directly by Atlas Venture Opportunity Fund II, L.P. ("AVOF II"). Atlas Venture Associates Opportunity II, L.P. ("AVAO II LP") is the general partner of AVOF II. Atlas Venture Associates Opportunity II, LLC ("AVAO II LLC") is the general partner of AVAO II LP. Each of AVAO II LP and AVAO II LLC disclaims Section 16 beneficial ownership of the securities held by AVOF II, except to the extent of its pecuniary interest therein, if any.