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$SMMT All transactions

Summit Therapeutics Inc.

A

$ Value

Shares

1,040,000

Price

Filed

May 1

Insider

Name

DUGGAN ROBERT W

Title

Co-Chief Executive Officer

CIK

0001055919

Roles

Director Officer 10% Owner

Transaction Details

Transaction Date

2025-04-29

Code

A

Table

Derivative

Ownership

Indirect

Equity Swap

No

Shares After

1,040,000

Footnotes

Effective April 29, 2025, these stock options were amended from performance-based stock options to time-based stock options. The shares underlying the option vest as follows: (i) 50% of such shares vested as of April 29, 2025, and (ii) the remaining 50% of such shares vest in three equal annual installments, with the first such installment occurring on October 13, 2025. | Not applicable. | The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Filing Info

Accession No.

0001599298-25-000093

Form Type

4

Issuer CIK

0001599298

DUGGAN ROBERT W's History

Date Ticker Type Value
2026-01-02 SMMT A $98K
2025-10-21 SMMT A $262.0M
2025-10-21 SMMT A $5.0M
2025-10-21 SMMT $500K
2025-09-11 SMMT $90K
2025-09-10 SMMT $5.9M
2025-09-10 PLSE $508K
2025-08-15 PLSE A $0
2025-08-15 PLSE A $0
2025-05-30 SMMT M $197K

Other Insiders at SMMT (90d)

No other insider activity at this issuer in the last 90 days.