Nick Leschly - 17 Mar 2022 Form 4/A - Amendment Insider Report for 2seventy bio, Inc. (TSVT)

Role: President and CEO, Director
Signature: /s/ Teresa Jurgensen, Attorney-in-Fact
Issuer symbol: TSVT
Transactions as of: 17 Mar 2022
Net transactions value: +$4,500,055
Form type: 4/A - Amendment
Filing time: 22 Mar 2022, 16:55:27 UTC
Date Of Original Report: 21 Mar 2022
Previous filing: 05 May 2022
Next filing: 13 Jun 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	TSVT	Common Stock	Purchase	$4,500,055	+368,857	+196%	$12.20	556,888	17 Mar 2022	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The shares of common stock were acquired by the Reporting Person pursuant to a share purchase agreement in a private placement offering of shares of the Issuer's common stock, which offering closed on March 17, 2022. The issuance of such shares by the Reporting Person was approved by the Issuer's board of directors in accordance with Rule 16(b)-3 of the Securities Exchange Act of 1934, as amended.

Content

The shares of common stock were acquired by the Reporting Person pursuant to a share purchase agreement in a private placement offering of shares of the Issuer's common stock, which offering closed on March 17, 2022. The issuance of such shares by the Reporting Person was approved by the Issuer's board of directors in accordance with Rule 16(b)-3 of the Securities Exchange Act of 1934, as amended.

Remarks:

This amendment is being filed to correct Column 3 of Table I to report that the shares of common stock acquired by the Reporting Person were purchased, not awarded as previously reported.