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Filing Details

Accession Number:: 0000950170-24-110797
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2024-10-01 16:05:04
Reporting Period:: 2024-09-27

Accepted Time:: 2024-10-01 16:05:04
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1818794	Dyne Therapeutics Inc.	DYN	Pharmaceutical Preparations (2834)	364883909

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1823682	Dirk Kersten	C/O Dyne Therapeutics, Inc. 1560 Trapelo Road Waltham MA 02451		No	No	No	No

Reported Non-Derivative Transactions

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Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2024-09-27	32	$35.00	189,647	No	4	S	Indirect	See footnote
Common Stock	Disposition	2024-09-30	29,007	$35.47	160,640	No	4	S	Indirect	See footnote
Common Stock	Disposition	2024-09-30	1,935	$36.02	158,705	No	4	S	Indirect	See footnote

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

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	5,795,364	Indirect	See footnote

Footnotes

This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by Forbion Capital Fund IV Cooperatief U.A. ("FCF IV") on April 9, 2024.
The shares are held directly by FCF IV. Forbion IV Management B.V. ("Forbion Management"), the director of FCF IV, may be deemed to have voting and dispositive power over the shares held by FCF IV. Investment decisions with respect to the shares held by FCF IV can be made by FCPM III Services B.V., the director of Forbion Management, which may delegate such powers to its investment committee which may delegate such powers to the authorized representatives of Forbion Management. Messrs. Slootweg, van Osch, Mulder, van Houten, Reithinger and Boorsma (the "Partners") are partners of FCPM III Services B.V., which acts as the investment advisor to the directors of FCF IV. The Reporting Person is a partner of Forbion Management and a member of the investment committee of Forbion Management. The Reporting Person disclaims beneficial ownership of the shares, except to the extent of his pecuniary interest therein.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices within the range of $35.00 to $35.995, inclusive. The Reporting Person 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 range(s) set forth in the footnotes of this Form 4.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices within the range of $36.005 to $36.04, inclusive.
The shares are held directly by ForDyne B.V. ("ForDyne"). ForDyne is jointly owned by FCF IV and Forbion Growth Opportunities Fund II Cooperatief U.A. ("FGO II"). Forbion Management may be deemed to have voting and dispositive power over 4,366,793 of the shares of common stock held by ForDyne. Investment decisions with respect to the shares held by ForDyne can be made by FCPM III Services B.V., the director of Forbion Management, which may delegate such powers to its investment committee which may delegate such powers to the authorized representatives of Forbion Management. The Partners are partners of FCPM III Services B.V., which acts as the investment advisor to the directors of ForDyne. The Reporting Person is a partner of Forbion Management and a member of the investment committee of Forbion Management.
(Continued from Footnote 5) Forbion Growth II Management B.V. ("FGO II Management"), the director of FGO II, may be deemed to have voting and dispositive power over 1,428,571 of the shares of common stock held by ForDyne. Investment decisions with respect to the shares held by ForDyne can be made by FCPM III Services B.V., the director of FGO II Management, which may delegate such powers to its investment committee which may delegate such powers to the authorized representatives of FGO II Management. The Partners are partners of FCPM III Services B.V., which acts as the investment advisor to the directors of ForDyne. The Reporting Person is a partner of FGO II Management and a member of the investment committee of FGO II Management. The Reporting Person disclaims beneficial ownership of the shares, except to the extent of his pecuniary interest therein.