Nick Leschly - Feb 1, 2023 Form 4 Insider Report for 2seventy bio, Inc. (TSVT)

Signature
/s/ Teresa Jurgensen, Attorney-in-Fact
Stock symbol
TSVT
Transactions as of
Feb 1, 2023
Transactions value $
$0
Form type
4
Date filed
2/3/2023, 03:59 PM
Previous filing
Jan 17, 2023
Next filing
Jun 20, 2023

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction TSVT Common Stock Award $0 +81.3K +15.2% $0.00 616K Feb 1, 2023 Direct F1
transaction TSVT Common Stock Award $0 +429K +69.61% $0.00 1.04M Feb 1, 2023 Direct F2
holding TSVT Common Stock 15.2K Feb 1, 2023 Nick Leschly 2001 Trust
holding TSVT Common Stock 41K Feb 1, 2023 Nick Leschly Irrevocable GST Trust of 2019

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction TSVT Stock Option (Right to buy) Award $0 +163K $0.00 163K Feb 1, 2023 Common Stock 163K $13.20 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 This restricted stock unit award vests over a four-year period at the rate of 25% on 01/01/2024, 25% on 01/01/2025, 25% on 01/01/2026, and 25% on 01/01/2027.
F2 This restricted stock unit award vests over a three-year period at the rate of 40% on 01/01/2024, 40% on 01/01/2025, and 20% on 01/01/2026.
F3 This stock option vests over a four-year period at the rate of 25% on 01/01/2024, and then in 36 equal monthly installments thereafter.