4//SEC Filing
Casdin Partners GP, LLC 4
Accession 0000919574-25-003264
CIK 0001860782other
Filed
May 14, 8:00 PM ET
Accepted
May 15, 4:51 PM ET
Size
19.6 KB
Accession
0000919574-25-003264
Insider Transaction Report
Form 4
Casdin Partners GP, LLC
Director
Transactions
- Disposition to Issuer
Stock Options (Right to buy)
2025-05-13−33,400→ 0 totalExercise: $4.54→ Common Stock, par value $0.0001 per share (33,400 underlying) - Disposition from Tender
Common Stock, par value $0.0001 per share
2025-05-13$5.00/sh−22,625$113,125→ 0 total - Disposition from Tender
Common Stock, par value $0.0001 per share
2025-05-13$5.00/sh−2,000,000$10,000,000→ 0 total(indirect: See footnote) - Disposition to Issuer
Stock Options (Right to buy)
2025-05-13−12,050→ 0 totalExercise: $3.93→ Common Stock, par value $0.0001 per share (12,050 underlying)
Casdin Capital, LLC
Director
Transactions
- Disposition from Tender
Common Stock, par value $0.0001 per share
2025-05-13$5.00/sh−22,625$113,125→ 0 total - Disposition from Tender
Common Stock, par value $0.0001 per share
2025-05-13$5.00/sh−2,000,000$10,000,000→ 0 total(indirect: See footnote) - Disposition to Issuer
Stock Options (Right to buy)
2025-05-13−12,050→ 0 totalExercise: $3.93→ Common Stock, par value $0.0001 per share (12,050 underlying) - Disposition to Issuer
Stock Options (Right to buy)
2025-05-13−33,400→ 0 totalExercise: $4.54→ Common Stock, par value $0.0001 per share (33,400 underlying)
Casdin Eli
Director
Transactions
- Disposition from Tender
Common Stock, par value $0.0001 per share
2025-05-13$5.00/sh−22,625$113,125→ 0 total - Disposition from Tender
Common Stock, par value $0.0001 per share
2025-05-13$5.00/sh−2,000,000$10,000,000→ 0 total(indirect: See footnote) - Disposition to Issuer
Stock Options (Right to buy)
2025-05-13−12,050→ 0 totalExercise: $3.93→ Common Stock, par value $0.0001 per share (12,050 underlying) - Disposition to Issuer
Stock Options (Right to buy)
2025-05-13−33,400→ 0 totalExercise: $4.54→ Common Stock, par value $0.0001 per share (33,400 underlying)
Transactions
- Disposition from Tender
Common Stock, par value $0.0001 per share
2025-05-13$5.00/sh−22,625$113,125→ 0 total - Disposition from Tender
Common Stock, par value $0.0001 per share
2025-05-13$5.00/sh−2,000,000$10,000,000→ 0 total(indirect: See footnote) - Disposition to Issuer
Stock Options (Right to buy)
2025-05-13−12,050→ 0 totalExercise: $3.93→ Common Stock, par value $0.0001 per share (12,050 underlying) - Disposition to Issuer
Stock Options (Right to buy)
2025-05-13−33,400→ 0 totalExercise: $4.54→ Common Stock, par value $0.0001 per share (33,400 underlying)
Footnotes (5)
- [F1]Represents securities that were tendered in connection with the Agreement and Plan of Merger (the "Merger Agreement"), dated March 10, 2025, by and among 2seventy bio, Inc. (the "Company"), Daybreak Merger Sub Inc. ("Merger Sub") and Bristol-Myers Squibb Company ("Parent"). Following completion of a cash tender offer by Merger Sub to acquire all of the issued and outstanding shares of the Company's common stock, par value $0.0001 per share (the "Company Common Stock") for $5.00 per share (the "Merger Consideration"), Merger Sub merged with and into the Company, with the Company continuing as the surviving corporation and a whole owned subsidiary of Parent (the "Merger").
- [F2]cont'd from footnote (1): Each restricted stock unit in respect of Company Common Stock ("Company RSU Award"), whether vested or unvested, that was outstanding immediately prior to the effective time of the Merger (the "Effective Time") was fully vested, was cancelled and automatically converted into the right to receive, for each share of Company Common Stock underlying such Company RSU Award immediately prior to the Effective Time, an amount (without interest and subject to deduction for any required withholding under applicable law relating to tax) in cash equal to the Merger Consideration. Additionally, effective as of the Effective Time and as a result of the Merger, Eli Casdin ceased to be a member of the Company's board of directors.
- [F3]The securities were owned directly by Eli Casdin.
- [F4]The securities were owned directly by Casdin Partners Master Fund, L.P. (the "Master Fund") and may be deemed to have been 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.
- [F5]Each option to purchase Company Common Stock ("Company Option"), whether vested or unvested, that was outstanding and unexercised immediately prior to the Effective Time and had a per share exercise price that was less than the Merger Consideration was fully vested, was cancelled and automatically converted into the right to receive, for each share of Company Common Stock underlying such Company Option immediately prior to the Effective Time, an amount (without interest and subject to deduction for any required withholding under applicable law relating to tax) in cash equal to the excess of the Merger Consideration over the per share exercise price of such Company Option.
Documents
Issuer
2seventy bio, Inc.
CIK 0001860782
Entity typeother
IncorporatedDE
Related Parties
1- filerCIK 0001534260
Filing Metadata
- Form type
- 4
- Filed
- May 14, 8:00 PM ET
- Accepted
- May 15, 4:51 PM ET
- Size
- 19.6 KB