Casdin Capital, LLC - 10 Jun 2024 Form 4 Insider Report for 2seventy bio, Inc. (TSVT)

Source evidence Original filing metadata and source links for verification. 5 source fields
SEC form
4
Accepted by SEC
12 Jun 2024, 14:32:24 UTC
Prior SEC filing
05 Jun 2024
Next SEC filing
05 Aug 2024
Source filing
View source filing
Reporting owner 1 detail
Reporting owner signature
Casdin Capital LLC, By: /s/ Eli Casdin, Managing Member

Key filing fact

Casdin Capital, LLC filed Form 4 for 2seventy bio, Inc. (TSVT) on 12 Jun 2024.

Key facts

  • This page summarizes Casdin Capital, LLC's Form 4 filing for 2seventy bio, Inc. (TSVT).
  • 2 reported transactions and 3 derivative rows are listed below.
  • Accepted by SEC: 12 Jun 2024, 14:32.

Change

  • Previous filing in this sequence was filed on 05 Jun 2024.
  • Current net transaction value: +$47,356.

Research use

  • This tells you what this filing adds before you inspect full transaction and derivative tables.
  • You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

TSVT transaction

Common Stock, par value $0.0001 per share

Award

Transaction value
Shares
+6,025
Change %
+36%
Price
Shares after
22,625
Date
10 Jun 2024
Ownership
Direct
Footnotes
F1, F2, F3
TSVT holding

Common Stock, par value $0.0001 per share

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
2,000,000
Date
10 Jun 2024
Ownership
See footnote
Footnotes
F4

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

TSVT transaction Derivative

Stock Options (Right to buy)

Award

Transaction value
$47,356
Shares
+12,050
Change %
Price
$3.93
Shares after
12,050
Date
10 Jun 2024
Ownership
Direct
Underlying class
Common Stock, par value $0.0001 per share
Underlying amount
12,050
Exercise price
$3.93
Footnotes
F3, F5
TSVT holding Derivative

Stock Options (Right to buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
33,400
Date
10 Jun 2024
Ownership
Direct
Underlying class
Common Stock, par value $0.0001 per share
Underlying amount
33,400
Exercise price
$4.54
Footnotes
F3, F6
TSVT holding Derivative

Total Return Swap

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
536,784
Date
10 Jun 2024
Ownership
See footnote
Underlying class
Common Stock, par value $0.0001 per share
Underlying amount
536,784
Exercise price
Footnotes
F4, F7
* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 7 footnotes

Footnote F1

Each restricted stock unit represents the right to receive one share of the Issuer's common Stock, par value $0.0001 per share.

Footnote F2

These shares are comprised of (i) 16,000 restricted stock units that vest ratable over three years in annual installments with the first installment vesting on March 20, 2025, subject to the Reporting Person's continued service through the applicable vesting date and (ii) 6,025 restricted stock units that vest on the earlier of (a) June 10, 2025 or (b) the date of the next annual meeting of stockholders of the Issuer.

Footnote F3

The securities are owned directly by Eli Casdin.

Footnote F4

The securities are owned directly by Casdin Partners Master Fund, L.P. (the "Master Fund") and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to the Master Fund ("Casdin"), (ii) Casdin Partners GP, LLC, the general partner of the Master Fund (the "GP"), and (iii) Eli Casdin, the managing member of Casdin and the GP.

Footnote F5

This stock option vests on the earlier of (a) June 10, 2025 or (b) the date of the next annual meeting of stockholders of the Issuer.

Footnote F6

This stock option vests ratably over three years in annual installments with the first installment vesting on March 20, 2025, subject to the Reporting Person's continued service through the applicable vesting date.

Footnote F7

The Master Fund has entered into certain cash-settled total return swap agreements (the "Swap Agreements"), which represent, after the transaction reported herein, economic exposure to an aggregate of 536,784.15 notional shares of the Issuer's Common Stock, par value $0.0001 per share. The Swap Agreements provide the Master Fund with economic results that are comparable to the economic results of ownership but do not provide it with the power to vote or direct the voting or dispose of or direct the disposition of the securities that are referenced by the Swap Agreements.

SEC remarks

Eli Casdin has been deputized to represent the Reporting Persons on the board of directors of the Issuer. By virtue of Mr. Casdin's representation, for purposes of Section 16 of the Securities Exchange Act of 1934 (the "Exchange Act"), each of the Reporting Persons may be deemed directors by deputization of the Issuer. Each Reporting Person disclaims beneficial ownership in the securities reported on this Form 4 except to the extent of its pecuniary interest, if any, therein, and this report shall not be deemed to be an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose.

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