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4//SEC Filing

VASCONCELLES MICHAEL 4

Accession 0001415889-25-017742

CIK 0001845337other

Filed

Jun 17, 8:00 PM ET

Accepted

Jun 18, 7:42 PM ET

Size

8.5 KB

Accession

0001415889-25-017742

Insider Transaction Report

Form 4
Period: 2025-06-16
VASCONCELLES MICHAEL
Head of Research and Dev.
Transactions
  • Award

    Stock Option (right to buy Common Stock)

    2025-06-16+346,000346,000 total
    Exercise: $6.64Exp: 2035-06-15Common Stock (346,000 underlying)
  • Award

    Restricted Stock Unit (RSU)

    2025-06-16+226,000226,000 total
    Exercise: $0.00Common Stock (226,000 underlying)
Footnotes (4)
  • [F1]The option vests as to 1/4th of the total grant on June 16, 2026, and 1/48th of the total grant will vest on each monthly anniversary thereafter, subject to the Reporting Person's provision of service to the Issuer on each option vesting date.
  • [F2]Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.
  • [F3]The RSUs vest as to 25% of the total award on August 15, 2026, and 1/12th of the remaining RSUs vest in quarterly installments thereafter on November 15, February 15, May 15 and August 15, subject to the Reporting Person's provision of service to the Issuer on each RSU vesting date.
  • [F4]RSUs do not expire; they either vest or are canceled prior to the RSU vesting date..

Issuer

Day One Biopharmaceuticals, Inc.

CIK 0001845337

Entity typeother

Related Parties

1
  • filerCIK 0001734755

Filing Metadata

Form type
4
Filed
Jun 17, 8:00 PM ET
Accepted
Jun 18, 7:42 PM ET
Size
8.5 KB