Form 4 for DYN Dyne Therapeutics, Inc.

Accepted 2022-09-21 00:00:00 ET · period of report 2022-09-20 · accession 0001209191-22-050884 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
	2022-09-21	2022-09-20	DYN	Brumm Joshua T	See Remarks, Dir	D - Sale to Iss	$13.70	-11.8K	204.6K	-5%	-$162.2K

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2022-09-20	D	D	11,836	$13.70	204,623	D	—	—	(F1) Represents shares automatically sold by the Reporting Person to satisfy tax withholding obligations in connection with the vesting of restricted stock units granted to the Reporting Person on September 17, 2020. The automatic sale of the Reporting Person's shares is provided for in a restricted stock unit agreement constituting a "binding contract" consistent with the affirmative defense to liability under Rule 10b5-1 and the sale does not represent a discretionary trade by the Reporting Person. (F2) The price reported in Column 4 is a weighted average price that represents the price of all shares sold by a broker on September 20, 2022 to satisfy tax withholding obligations. These shares were sold in multiple transactions at prices within the range of $13.70 to $13.81, 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 this footnote of this Form 4. (F3) Includes 149,544 unvested RSUs.