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Bender Jeremy

Disclosed activity across 5 companies

Tapewire entity
28118
SEC CIK
0001863107

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Aura Biosciences, Inc.AURA · Entity 5142DirectorJuly 07, 2026July 08, 2026
Bicara Therapeutics Inc.BCAX · Entity 4673DirectorJuly 28, 2026July 29, 2026
Mereo BioPharma Group plcMREO · Entity 7264DirectorFebruary 26, 2026February 27, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Aura Biosciences, Inc.

Report date July 07, 2026 · Filed July 08, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect30,000 Reported balance After 2026-07-07 transaction · row 1
1 source row

Row 1 · 2026-07-07 · Grant · Acquired 30,000 · Balance 30,000

F1: These shares were acquired pursuant to a restricted stock unit ("RSU") award under the Issuer's 2021 Stock Option and Incentive Plan. Each RSU represents the right to receive one share of the Issuer's Common Stock. These RSUs vest in three substantially equal annual installments beginning on July 15, 2027, subject to the Reporting Person's continued service as of each such vesting date.

Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $7.03 · Expires 2036-07-07Direct60,000 Reported balance After 2026-07-07 transaction · row 2 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 2 · 2026-07-07 · Grant · Acquired 60,000 · Balance 60,000

F2: The shares underlying this option vest in three substantially equal annual installments beginning on July 7, 2027, subject to the Reporting Person's continued service as of each such vesting date.

Filing footnotes · ownership attribution and instrument terms

F1: These shares were acquired pursuant to a restricted stock unit ("RSU") award under the Issuer's 2021 Stock Option and Incentive Plan. Each RSU represents the right to receive one share of the Issuer's Common Stock. These RSUs vest in three substantially equal annual installments beginning on July 15, 2027, subject to the Reporting Person's continued service as of each such vesting date.

F2: The shares underlying this option vest in three substantially equal annual installments beginning on July 7, 2027, subject to the Reporting Person's continued service as of each such vesting date.

Bicara Therapeutics Inc.

Report date July 28, 2026 · Filed July 29, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $26.88 · Expires 2036-07-28Direct38,950 Reported balance After 2026-07-28 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2026-07-28 · Grant · Acquired 38,950 · Balance 38,950

F1: One-third of the shares underlying this option shall vest and become exercisable on July 28, 2027, with the remainder vesting in twenty-four equal monthly installments thereafter, subject to the Reporting Person's continued service on each such vesting date.

Filing footnotes · ownership attribution and instrument terms

F1: One-third of the shares underlying this option shall vest and become exercisable on July 28, 2027, with the remainder vesting in twenty-four equal monthly installments thereafter, subject to the Reporting Person's continued service on each such vesting date.

Mereo BioPharma Group plc

Report date February 26, 2026 · Filed February 27, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Share Options (Right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $0.39 · Expires 2036-02-26Direct66,000 Reported balance After 2026-02-26 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2026-02-26 · Grant · Acquired 66,000 · Balance 66,000

F1: Vests in substantially equal monthly installments over a one year period from the February 26, 2026 grant date.

F2: Each American Depositary Share ("ADS") represents five ordinary shares, nominal value GBP 0.003 per ordinary share, of the Issuer.

Deferred Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect117,533 Reported balance After 2026-02-26 transaction · row 2 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 2 · 2026-02-26 · Grant · Acquired 117,533 · Balance 117,533

F3: Deferred restricted stock units ("DRSU") are granted to non-executive directors who elected to receive DRSUs in the form of ADSs in lieu of annual cash compensation. DRSUs vest in substantially equal monthly installments over the plan year following the grant date. Payment of DRSUs in ADSs will generally be made 180 days following separation of service.

F2: Each American Depositary Share ("ADS") represents five ordinary shares, nominal value GBP 0.003 per ordinary share, of the Issuer.

Filing footnotes · ownership attribution and instrument terms

F1: Vests in substantially equal monthly installments over a one year period from the February 26, 2026 grant date.

F2: Each American Depositary Share ("ADS") represents five ordinary shares, nominal value GBP 0.003 per ordinary share, of the Issuer.

F3: Deferred restricted stock units ("DRSU") are granted to non-executive directors who elected to receive DRSUs in the form of ADSs in lieu of annual cash compensation. DRSUs vest in substantially equal monthly installments over the plan year following the grant date. Payment of DRSUs in ADSs will generally be made 180 days following separation of service.

Past disclosures · reporting ended (2)

No longer tracked through insider filings. These historical balances do not imply present ownership or a zero position.

Day One Biopharmaceuticals, Inc.

Report date April 23, 2026 · Filed April 23, 2026

Section 16 reporting ended · disclosed 2026-04-23. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect0 Reported balance After 2026-04-23 transaction · row 1
1 source row

Row 1 · 2026-04-23 · Disposition to issuer · Disposed 204,643 · Balance 0

F1: On March 6, 2026, Servier Pharmaceuticals LLC, a Delaware limited liability company ("Parent"), Servier Detroit Inc., a Delaware corporation and a wholly owned subsidiary of Parent ("Merger Sub"), Day One Biopharmaceuticals, Inc., a Delaware corporation (the "Company"), and Servier S.A.S., a French societe par actions simplifiee, solely as a guarantor, entered into an Agreement and Plan of Merger (the "Merger Agreement"). Pursuant to the Merger Agreement, the Merger Sub merged with and into the Company (such merger and the other transactions contemplated by the Merger Agreement, the "Merger") with the Company surviving the Merger as a wholly owned subsidiary of the Parent.

F2: Upon the closing of the Merger on April 23, 2026, each issued and outstanding share of the Company's Common Stock, par value $0.0001 per share, was either (x) purchased for $21.50 per share (the "Offer Price"), net to the seller in cash, without interest, and subject to applicable withholding taxes, on the terms and conditions set forth in the Merger Agreement, or (y) automatically converted into the right to receive the Offer Price (the "Merger Consideration"), net to the seller in cash, without interest, and subject to applicable withholding taxes, on the terms and conditions set forth in the Merger Agreement.

Common StockSEC Table I · non-derivativeIndirectSee footnote0 Reported balance After 2026-04-23 transaction · row 2 Account identity is unresolved; indirect or unspecified ownership is not merged.
1 source row

Row 2 · 2026-04-23 · Disposition to issuer · Disposed 20,204 · Balance 0

F1: On March 6, 2026, Servier Pharmaceuticals LLC, a Delaware limited liability company ("Parent"), Servier Detroit Inc., a Delaware corporation and a wholly owned subsidiary of Parent ("Merger Sub"), Day One Biopharmaceuticals, Inc., a Delaware corporation (the "Company"), and Servier S.A.S., a French societe par actions simplifiee, solely as a guarantor, entered into an Agreement and Plan of Merger (the "Merger Agreement"). Pursuant to the Merger Agreement, the Merger Sub merged with and into the Company (such merger and the other transactions contemplated by the Merger Agreement, the "Merger") with the Company surviving the Merger as a wholly owned subsidiary of the Parent.

F2: Upon the closing of the Merger on April 23, 2026, each issued and outstanding share of the Company's Common Stock, par value $0.0001 per share, was either (x) purchased for $21.50 per share (the "Offer Price"), net to the seller in cash, without interest, and subject to applicable withholding taxes, on the terms and conditions set forth in the Merger Agreement, or (y) automatically converted into the right to receive the Offer Price (the "Merger Consideration"), net to the seller in cash, without interest, and subject to applicable withholding taxes, on the terms and conditions set forth in the Merger Agreement.

F3: Represents shares held by The Jeremy Bender 2023 Grantor Retained Annuity Trust dated June 27, 2023.

Common StockSEC Table I · non-derivativeIndirectSee footnote0 Reported balance After 2026-04-23 transaction · row 3 Account identity is unresolved; indirect or unspecified ownership is not merged.
1 source row

Row 3 · 2026-04-23 · Disposition to issuer · Disposed 300,000 · Balance 0

F1: On March 6, 2026, Servier Pharmaceuticals LLC, a Delaware limited liability company ("Parent"), Servier Detroit Inc., a Delaware corporation and a wholly owned subsidiary of Parent ("Merger Sub"), Day One Biopharmaceuticals, Inc., a Delaware corporation (the "Company"), and Servier S.A.S., a French societe par actions simplifiee, solely as a guarantor, entered into an Agreement and Plan of Merger (the "Merger Agreement"). Pursuant to the Merger Agreement, the Merger Sub merged with and into the Company (such merger and the other transactions contemplated by the Merger Agreement, the "Merger") with the Company surviving the Merger as a wholly owned subsidiary of the Parent.

F2: Upon the closing of the Merger on April 23, 2026, each issued and outstanding share of the Company's Common Stock, par value $0.0001 per share, was either (x) purchased for $21.50 per share (the "Offer Price"), net to the seller in cash, without interest, and subject to applicable withholding taxes, on the terms and conditions set forth in the Merger Agreement, or (y) automatically converted into the right to receive the Offer Price (the "Merger Consideration"), net to the seller in cash, without interest, and subject to applicable withholding taxes, on the terms and conditions set forth in the Merger Agreement.

F4: Represents shares held by the Jeremy Bender 2025 Grantor Retained Annuity Trust of which the Reporting Person is trustee.

Common StockSEC Table I · non-derivativeIndirectSee footnote0 Reported balance After 2026-04-23 transaction · row 4 Account identity is unresolved; indirect or unspecified ownership is not merged.
1 source row

Row 4 · 2026-04-23 · Disposition to issuer · Disposed 147,702 · Balance 0

F1: On March 6, 2026, Servier Pharmaceuticals LLC, a Delaware limited liability company ("Parent"), Servier Detroit Inc., a Delaware corporation and a wholly owned subsidiary of Parent ("Merger Sub"), Day One Biopharmaceuticals, Inc., a Delaware corporation (the "Company"), and Servier S.A.S., a French societe par actions simplifiee, solely as a guarantor, entered into an Agreement and Plan of Merger (the "Merger Agreement"). Pursuant to the Merger Agreement, the Merger Sub merged with and into the Company (such merger and the other transactions contemplated by the Merger Agreement, the "Merger") with the Company surviving the Merger as a wholly owned subsidiary of the Parent.

F2: Upon the closing of the Merger on April 23, 2026, each issued and outstanding share of the Company's Common Stock, par value $0.0001 per share, was either (x) purchased for $21.50 per share (the "Offer Price"), net to the seller in cash, without interest, and subject to applicable withholding taxes, on the terms and conditions set forth in the Merger Agreement, or (y) automatically converted into the right to receive the Offer Price (the "Merger Consideration"), net to the seller in cash, without interest, and subject to applicable withholding taxes, on the terms and conditions set forth in the Merger Agreement.

F5: Represents shares held by The Melissa Bender 2022 Grantor Retained Annuity Trust under Irrevocable Trust Agreement dated March 29, 2022 of which the Reporting Person's spouse is trustee.

Common StockSEC Table I · non-derivativeIndirectSee footnote0 Reported balance After 2026-04-23 transaction · row 5 Account identity is unresolved; indirect or unspecified ownership is not merged.
1 source row

Row 5 · 2026-04-23 · Disposition to issuer · Disposed 18,197 · Balance 0

F1: On March 6, 2026, Servier Pharmaceuticals LLC, a Delaware limited liability company ("Parent"), Servier Detroit Inc., a Delaware corporation and a wholly owned subsidiary of Parent ("Merger Sub"), Day One Biopharmaceuticals, Inc., a Delaware corporation (the "Company"), and Servier S.A.S., a French societe par actions simplifiee, solely as a guarantor, entered into an Agreement and Plan of Merger (the "Merger Agreement"). Pursuant to the Merger Agreement, the Merger Sub merged with and into the Company (such merger and the other transactions contemplated by the Merger Agreement, the "Merger") with the Company surviving the Merger as a wholly owned subsidiary of the Parent.

F2: Upon the closing of the Merger on April 23, 2026, each issued and outstanding share of the Company's Common Stock, par value $0.0001 per share, was either (x) purchased for $21.50 per share (the "Offer Price"), net to the seller in cash, without interest, and subject to applicable withholding taxes, on the terms and conditions set forth in the Merger Agreement, or (y) automatically converted into the right to receive the Offer Price (the "Merger Consideration"), net to the seller in cash, without interest, and subject to applicable withholding taxes, on the terms and conditions set forth in the Merger Agreement.

F6: Represents shares held by The Melissa Bender 2023 Grantor Retained Annuity Trust, dated June 27, 2023.

Common StockSEC Table I · non-derivativeIndirectSee footnote0 Reported balance After 2026-04-23 transaction · row 6 Account identity is unresolved; indirect or unspecified ownership is not merged.
1 source row

Row 6 · 2026-04-23 · Disposition to issuer · Disposed 300,000 · Balance 0

F1: On March 6, 2026, Servier Pharmaceuticals LLC, a Delaware limited liability company ("Parent"), Servier Detroit Inc., a Delaware corporation and a wholly owned subsidiary of Parent ("Merger Sub"), Day One Biopharmaceuticals, Inc., a Delaware corporation (the "Company"), and Servier S.A.S., a French societe par actions simplifiee, solely as a guarantor, entered into an Agreement and Plan of Merger (the "Merger Agreement"). Pursuant to the Merger Agreement, the Merger Sub merged with and into the Company (such merger and the other transactions contemplated by the Merger Agreement, the "Merger") with the Company surviving the Merger as a wholly owned subsidiary of the Parent.

F2: Upon the closing of the Merger on April 23, 2026, each issued and outstanding share of the Company's Common Stock, par value $0.0001 per share, was either (x) purchased for $21.50 per share (the "Offer Price"), net to the seller in cash, without interest, and subject to applicable withholding taxes, on the terms and conditions set forth in the Merger Agreement, or (y) automatically converted into the right to receive the Offer Price (the "Merger Consideration"), net to the seller in cash, without interest, and subject to applicable withholding taxes, on the terms and conditions set forth in the Merger Agreement.

F7: Represents shares held by the Melissa Bender 2025 Grantor Retained Annuity Trust of which the Reporting Person's spouse is trustee.

Common StockSEC Table I · non-derivativeIndirectSee footnote0 Reported balance After 2026-04-23 transaction · row 7 Account identity is unresolved; indirect or unspecified ownership is not merged.
1 source row

Row 7 · 2026-04-23 · Disposition to issuer · Disposed 808,285 · Balance 0

F1: On March 6, 2026, Servier Pharmaceuticals LLC, a Delaware limited liability company ("Parent"), Servier Detroit Inc., a Delaware corporation and a wholly owned subsidiary of Parent ("Merger Sub"), Day One Biopharmaceuticals, Inc., a Delaware corporation (the "Company"), and Servier S.A.S., a French societe par actions simplifiee, solely as a guarantor, entered into an Agreement and Plan of Merger (the "Merger Agreement"). Pursuant to the Merger Agreement, the Merger Sub merged with and into the Company (such merger and the other transactions contemplated by the Merger Agreement, the "Merger") with the Company surviving the Merger as a wholly owned subsidiary of the Parent.

F2: Upon the closing of the Merger on April 23, 2026, each issued and outstanding share of the Company's Common Stock, par value $0.0001 per share, was either (x) purchased for $21.50 per share (the "Offer Price"), net to the seller in cash, without interest, and subject to applicable withholding taxes, on the terms and conditions set forth in the Merger Agreement, or (y) automatically converted into the right to receive the Offer Price (the "Merger Consideration"), net to the seller in cash, without interest, and subject to applicable withholding taxes, on the terms and conditions set forth in the Merger Agreement.

F8: Represents shares held by the Bender Revocable Trust dated January 18, 2017, as amended, Jeremy Bender and Melissa C. Bender, Trustees.

Stock Option (right to buy Common Stock)SEC Table II · derivative / convertible security · Conversion / exercise price $8.99 · Expires 2031-05-25Direct0 Reported balance After 2026-04-23 transaction · row 8 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 8 · 2026-04-23 · Disposition to issuer · Disposed 1,463,134 · Balance 0

F10: Immediately prior to the effective time of the Merger, all outstanding unvested stock options and unvested restricted stock units became fully vested. At the effective time of the Merger, each stock option and restricted stock unit was canceled and converted into the right to receive an amount in cash equal to the Merger Consideration (or, in the case of stock options, the difference between the Merger Consideration and the applicable per share exercise price), less any applicable withholding taxes.

F9: The options are fully vested.

Stock Option (right to buy Common Stock)SEC Table II · derivative / convertible security · Conversion / exercise price $8.99 · Expires 2032-01-17Direct0 Reported balance After 2026-04-23 transaction · row 9 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 9 · 2026-04-23 · Disposition to issuer · Disposed 397,000 · Balance 0

F10: Immediately prior to the effective time of the Merger, all outstanding unvested stock options and unvested restricted stock units became fully vested. At the effective time of the Merger, each stock option and restricted stock unit was canceled and converted into the right to receive an amount in cash equal to the Merger Consideration (or, in the case of stock options, the difference between the Merger Consideration and the applicable per share exercise price), less any applicable withholding taxes.

F11: The option vests as to 2.0833% of the total shares monthly, with 100% of the total shares vested on January 18, 2026, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

Stock Option (right to buy Common Stock)SEC Table II · derivative / convertible security · Conversion / exercise price $8.99 · Expires 2033-01-16Direct0 Reported balance After 2026-04-23 transaction · row 10 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 10 · 2026-04-23 · Disposition to issuer · Disposed 244,000 · Balance 0

F10: Immediately prior to the effective time of the Merger, all outstanding unvested stock options and unvested restricted stock units became fully vested. At the effective time of the Merger, each stock option and restricted stock unit was canceled and converted into the right to receive an amount in cash equal to the Merger Consideration (or, in the case of stock options, the difference between the Merger Consideration and the applicable per share exercise price), less any applicable withholding taxes.

F12: The option vests as to 1/48th of the total shares monthly, commencing February 17, 2023, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

Stock Option (right to buy Common Stock)SEC Table II · derivative / convertible security · Conversion / exercise price $8.99 · Expires 2034-01-04Direct0 Reported balance After 2026-04-23 transaction · row 11 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 11 · 2026-04-23 · Disposition to issuer · Disposed 286,000 · Balance 0

F10: Immediately prior to the effective time of the Merger, all outstanding unvested stock options and unvested restricted stock units became fully vested. At the effective time of the Merger, each stock option and restricted stock unit was canceled and converted into the right to receive an amount in cash equal to the Merger Consideration (or, in the case of stock options, the difference between the Merger Consideration and the applicable per share exercise price), less any applicable withholding taxes.

F13: The option vests as to 1/48th of the total shares monthly, commencing February 5, 2024, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

Stock Option (right to buy Common Stock)SEC Table II · derivative / convertible security · Conversion / exercise price $8.99 · Expires 2035-01-14Direct0 Reported balance After 2026-04-23 transaction · row 12 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 12 · 2026-04-23 · Disposition to issuer · Disposed 286,000 · Balance 0

F10: Immediately prior to the effective time of the Merger, all outstanding unvested stock options and unvested restricted stock units became fully vested. At the effective time of the Merger, each stock option and restricted stock unit was canceled and converted into the right to receive an amount in cash equal to the Merger Consideration (or, in the case of stock options, the difference between the Merger Consideration and the applicable per share exercise price), less any applicable withholding taxes.

F14: The option vests as to 1/48th of the total shares monthly, commencing February 15, 2025, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

Stock Option (right to buy Common Stock)SEC Table II · derivative / convertible security · Conversion / exercise price $11.16 · Expires 2036-01-29Direct0 Reported balance After 2026-04-23 transaction · row 13 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 13 · 2026-04-23 · Disposition to issuer · Disposed 355,000 · Balance 0

F10: Immediately prior to the effective time of the Merger, all outstanding unvested stock options and unvested restricted stock units became fully vested. At the effective time of the Merger, each stock option and restricted stock unit was canceled and converted into the right to receive an amount in cash equal to the Merger Consideration (or, in the case of stock options, the difference between the Merger Consideration and the applicable per share exercise price), less any applicable withholding taxes.

F15: The option vests as to 1/48th of the total shares monthly, commencing February 28, 2026, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

Restricted Stock Unit (RSU)SEC Table II · derivative / convertible securityDirect0 Reported balance After 2026-04-23 transaction · row 14 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 14 · 2026-04-23 · Disposition to issuer · Disposed 14,250 · Balance 0

F16: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement.

F10: Immediately prior to the effective time of the Merger, all outstanding unvested stock options and unvested restricted stock units became fully vested. At the effective time of the Merger, each stock option and restricted stock unit was canceled and converted into the right to receive an amount in cash equal to the Merger Consideration (or, in the case of stock options, the difference between the Merger Consideration and the applicable per share exercise price), less any applicable withholding taxes.

F17: The RSUs vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F18: RSUs do not expire; they either vest or are canceled prior to the vesting date.

Restricted Stock Unit (RSU)SEC Table II · derivative / convertible securityDirect0 Reported balance After 2026-04-23 transaction · row 15 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 15 · 2026-04-23 · Disposition to issuer · Disposed 81,816 · Balance 0

F16: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement.

F10: Immediately prior to the effective time of the Merger, all outstanding unvested stock options and unvested restricted stock units became fully vested. At the effective time of the Merger, each stock option and restricted stock unit was canceled and converted into the right to receive an amount in cash equal to the Merger Consideration (or, in the case of stock options, the difference between the Merger Consideration and the applicable per share exercise price), less any applicable withholding taxes.

F17: The RSUs vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F18: RSUs do not expire; they either vest or are canceled prior to the vesting date.

Restricted Stock Unit (RSU)SEC Table II · derivative / convertible securityDirect0 Reported balance After 2026-04-23 transaction · row 16 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 16 · 2026-04-23 · Disposition to issuer · Disposed 128,565 · Balance 0

F16: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement.

F10: Immediately prior to the effective time of the Merger, all outstanding unvested stock options and unvested restricted stock units became fully vested. At the effective time of the Merger, each stock option and restricted stock unit was canceled and converted into the right to receive an amount in cash equal to the Merger Consideration (or, in the case of stock options, the difference between the Merger Consideration and the applicable per share exercise price), less any applicable withholding taxes.

F17: The RSUs vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F18: RSUs do not expire; they either vest or are canceled prior to the vesting date.

Restricted Stock Unit (RSU)SEC Table II · derivative / convertible securityDirect0 Reported balance After 2026-04-23 transaction · row 17 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 17 · 2026-04-23 · Disposition to issuer · Disposed 222,188 · Balance 0

F16: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement.

F10: Immediately prior to the effective time of the Merger, all outstanding unvested stock options and unvested restricted stock units became fully vested. At the effective time of the Merger, each stock option and restricted stock unit was canceled and converted into the right to receive an amount in cash equal to the Merger Consideration (or, in the case of stock options, the difference between the Merger Consideration and the applicable per share exercise price), less any applicable withholding taxes.

F17: The RSUs vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F18: RSUs do not expire; they either vest or are canceled prior to the vesting date.

Filing footnotes · ownership attribution and instrument terms

F1: On March 6, 2026, Servier Pharmaceuticals LLC, a Delaware limited liability company ("Parent"), Servier Detroit Inc., a Delaware corporation and a wholly owned subsidiary of Parent ("Merger Sub"), Day One Biopharmaceuticals, Inc., a Delaware corporation (the "Company"), and Servier S.A.S., a French societe par actions simplifiee, solely as a guarantor, entered into an Agreement and Plan of Merger (the "Merger Agreement"). Pursuant to the Merger Agreement, the Merger Sub merged with and into the Company (such merger and the other transactions contemplated by the Merger Agreement, the "Merger") with the Company surviving the Merger as a wholly owned subsidiary of the Parent.

F2: Upon the closing of the Merger on April 23, 2026, each issued and outstanding share of the Company's Common Stock, par value $0.0001 per share, was either (x) purchased for $21.50 per share (the "Offer Price"), net to the seller in cash, without interest, and subject to applicable withholding taxes, on the terms and conditions set forth in the Merger Agreement, or (y) automatically converted into the right to receive the Offer Price (the "Merger Consideration"), net to the seller in cash, without interest, and subject to applicable withholding taxes, on the terms and conditions set forth in the Merger Agreement.

F3: Represents shares held by The Jeremy Bender 2023 Grantor Retained Annuity Trust dated June 27, 2023.

F4: Represents shares held by the Jeremy Bender 2025 Grantor Retained Annuity Trust of which the Reporting Person is trustee.

F5: Represents shares held by The Melissa Bender 2022 Grantor Retained Annuity Trust under Irrevocable Trust Agreement dated March 29, 2022 of which the Reporting Person's spouse is trustee.

F6: Represents shares held by The Melissa Bender 2023 Grantor Retained Annuity Trust, dated June 27, 2023.

F7: Represents shares held by the Melissa Bender 2025 Grantor Retained Annuity Trust of which the Reporting Person's spouse is trustee.

F8: Represents shares held by the Bender Revocable Trust dated January 18, 2017, as amended, Jeremy Bender and Melissa C. Bender, Trustees.

F9: The options are fully vested.

F10: Immediately prior to the effective time of the Merger, all outstanding unvested stock options and unvested restricted stock units became fully vested. At the effective time of the Merger, each stock option and restricted stock unit was canceled and converted into the right to receive an amount in cash equal to the Merger Consideration (or, in the case of stock options, the difference between the Merger Consideration and the applicable per share exercise price), less any applicable withholding taxes.

F11: The option vests as to 2.0833% of the total shares monthly, with 100% of the total shares vested on January 18, 2026, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F12: The option vests as to 1/48th of the total shares monthly, commencing February 17, 2023, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F13: The option vests as to 1/48th of the total shares monthly, commencing February 5, 2024, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F14: The option vests as to 1/48th of the total shares monthly, commencing February 15, 2025, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F15: The option vests as to 1/48th of the total shares monthly, commencing February 28, 2026, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F16: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement.

F17: The RSUs vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F18: RSUs do not expire; they either vest or are canceled prior to the vesting date.

Fusion Pharmaceuticals Inc.

Report date June 04, 2024 · Filed June 04, 2024

Section 16 reporting ended · disclosed 2024-06-04. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $4.16Direct0 Reported balance After 2024-06-04 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2024-06-04 · Disposition to issuer · Disposed 34,000 · Balance 0

F1: Pursuant to the Arrangement Agreement, dated as of March 18, 2024 (the "Arrangement Agreement"), by and among the Issuer, AstraZeneca AB, a public company with limited liability (Aktiebolag) incorporated under the laws of Sweden ("Parent") and 15863210 Canada Inc., a corporation formed under the Canada Business Corporations Act ("Purchaser"), Purchaser acquired all of the issued and outstanding common shares of the Issuer (collectively, the "Shares") effective as of 12:01 a.m. Toronto time on June 4, 2024 (the "Effective Time"). Following the Effective Time, each Share outstanding immediately prior to the Effective Time was assigned and transferred by the holder thereof to Purchaser in exchange for (i) US$21.00 in cash (the "Cash Consideration") plus (ii) one contingent value right (each, a "CVR") representing the contingent right to receive a cash payment equal to US$3.00, in each case subject to applicable tax withholdings and other source deductions.

F2: Pursuant to the terms of the Arrangement Agreement, immediately following the Effective Time, each option to purchase Shares granted (each, an "Option") with an exercise price that is less than the Cash Consideration and outstanding immediately prior to the Effective Time, whether vested or unvested, was assigned, transferred and surrendered by the holder thereof to the Issuer and thereafter cancelled in consideration for (A) a cash payment by or on behalf of the Issuer equal to the number of Shares into which such Option is then exercisable multiplied by the amount, if any, by which the Cash Consideration exceeds the exercise price per Share of such Option and (B) one CVR with respect to each Share into which such Option is then exercisable, in each case subject to applicable tax withholdings and other source deductions.

Filing footnotes · ownership attribution and instrument terms

F1: Pursuant to the Arrangement Agreement, dated as of March 18, 2024 (the "Arrangement Agreement"), by and among the Issuer, AstraZeneca AB, a public company with limited liability (Aktiebolag) incorporated under the laws of Sweden ("Parent") and 15863210 Canada Inc., a corporation formed under the Canada Business Corporations Act ("Purchaser"), Purchaser acquired all of the issued and outstanding common shares of the Issuer (collectively, the "Shares") effective as of 12:01 a.m. Toronto time on June 4, 2024 (the "Effective Time"). Following the Effective Time, each Share outstanding immediately prior to the Effective Time was assigned and transferred by the holder thereof to Purchaser in exchange for (i) US$21.00 in cash (the "Cash Consideration") plus (ii) one contingent value right (each, a "CVR") representing the contingent right to receive a cash payment equal to US$3.00, in each case subject to applicable tax withholdings and other source deductions.

F2: Pursuant to the terms of the Arrangement Agreement, immediately following the Effective Time, each option to purchase Shares granted (each, an "Option") with an exercise price that is less than the Cash Consideration and outstanding immediately prior to the Effective Time, whether vested or unvested, was assigned, transferred and surrendered by the holder thereof to the Issuer and thereafter cancelled in consideration for (A) a cash payment by or on behalf of the Issuer equal to the number of Shares into which such Option is then exercisable multiplied by the amount, if any, by which the Cash Consideration exceeds the exercise price per Share of such Option and (B) one CVR with respect to each Share into which such Option is then exercisable, in each case subject to applicable tax withholdings and other source deductions.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
November 06, 2025 Filed Nov 7, 2025 23:16 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 GrantStock Option (right to buy Common Stock) · Derivative 286,000 $0.00 Strike: $8.99 $0.00
Disclosure

SEC source: 0001863107-25-000003 · form4-11072025_111140.xml · derivative · entry 8

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 286,000

Underlying: Common Stock · 286,000 shares

Expires 2034-01-04

F1 · kind: On October 7, 2025, the Issuer's Board of Directors approved an option repricing (the "Repricing") whereby the Reporting Person's options were repriced on November 6, 2025 (the "Effective Date") with a new exercise price of $8.99 (if lower than the original exercise price), the closing price on Nasdaq as of the Effective Date. In order to exercise the repriced options at the new exercise price, the Reporting Person is required to remain in service with the Issuer through the Retention Period; provided that the additional premium payment will not be required if the Reporting Person's service to the Issuer is terminated by reason of death or Disability (as defined in the Company's 2021 Equity Incentive Plan ("the Plan")).

F2 · kind: (Continued from Footnote 1) The "Retention Period" commenced on the Effective Date and ends upon the earliest of (i) the 12-month anniversary of the Effective Date and (ii) a Corporate Transaction (as defined in the Plan). All of the other terms of the options remain unchanged. Such transactions were exempt pursuant to Rule 16b-6(d) and Rule 16b-3 of the Exchange Act, as applicable.

F6 · derivative.exercise_date: The option vests as to 1/48th of the total shares monthly, commencing February 5, 2024, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

Read SEC document
November 06, 2025 Filed Nov 7, 2025 23:16 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Disposition to issuerStock Option (right to buy Common Stock) · Derivative 286,000 $0.00 Strike: $14.44 $0.00
Disclosure

SEC source: 0001863107-25-000003 · form4-11072025_111140.xml · derivative · entry 7

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 286,000 shares

Expires 2034-01-04

F1 · kind: On October 7, 2025, the Issuer's Board of Directors approved an option repricing (the "Repricing") whereby the Reporting Person's options were repriced on November 6, 2025 (the "Effective Date") with a new exercise price of $8.99 (if lower than the original exercise price), the closing price on Nasdaq as of the Effective Date. In order to exercise the repriced options at the new exercise price, the Reporting Person is required to remain in service with the Issuer through the Retention Period; provided that the additional premium payment will not be required if the Reporting Person's service to the Issuer is terminated by reason of death or Disability (as defined in the Company's 2021 Equity Incentive Plan ("the Plan")).

F2 · kind: (Continued from Footnote 1) The "Retention Period" commenced on the Effective Date and ends upon the earliest of (i) the 12-month anniversary of the Effective Date and (ii) a Corporate Transaction (as defined in the Plan). All of the other terms of the options remain unchanged. Such transactions were exempt pursuant to Rule 16b-6(d) and Rule 16b-3 of the Exchange Act, as applicable.

F6 · derivative.exercise_date: The option vests as to 1/48th of the total shares monthly, commencing February 5, 2024, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

Read SEC document
November 06, 2025 Filed Nov 7, 2025 23:16 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 GrantStock Option (right to buy Common Stock) · Derivative 244,000 $0.00 Strike: $8.99 $0.00
Disclosure

SEC source: 0001863107-25-000003 · form4-11072025_111140.xml · derivative · entry 6

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 244,000

Underlying: Common Stock · 244,000 shares

Expires 2033-01-16

F1 · kind: On October 7, 2025, the Issuer's Board of Directors approved an option repricing (the "Repricing") whereby the Reporting Person's options were repriced on November 6, 2025 (the "Effective Date") with a new exercise price of $8.99 (if lower than the original exercise price), the closing price on Nasdaq as of the Effective Date. In order to exercise the repriced options at the new exercise price, the Reporting Person is required to remain in service with the Issuer through the Retention Period; provided that the additional premium payment will not be required if the Reporting Person's service to the Issuer is terminated by reason of death or Disability (as defined in the Company's 2021 Equity Incentive Plan ("the Plan")).

F2 · kind: (Continued from Footnote 1) The "Retention Period" commenced on the Effective Date and ends upon the earliest of (i) the 12-month anniversary of the Effective Date and (ii) a Corporate Transaction (as defined in the Plan). All of the other terms of the options remain unchanged. Such transactions were exempt pursuant to Rule 16b-6(d) and Rule 16b-3 of the Exchange Act, as applicable.

F5 · derivative.exercise_date: The option vests as to 1/48th of the total shares monthly, commencing February 17, 2023, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

Read SEC document
November 06, 2025 Filed Nov 7, 2025 23:16 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Disposition to issuerStock Option (right to buy Common Stock) · Derivative 244,000 $0.00 Strike: $23.41 $0.00
Disclosure

SEC source: 0001863107-25-000003 · form4-11072025_111140.xml · derivative · entry 5

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 244,000 shares

Expires 2033-01-16

F1 · kind: On October 7, 2025, the Issuer's Board of Directors approved an option repricing (the "Repricing") whereby the Reporting Person's options were repriced on November 6, 2025 (the "Effective Date") with a new exercise price of $8.99 (if lower than the original exercise price), the closing price on Nasdaq as of the Effective Date. In order to exercise the repriced options at the new exercise price, the Reporting Person is required to remain in service with the Issuer through the Retention Period; provided that the additional premium payment will not be required if the Reporting Person's service to the Issuer is terminated by reason of death or Disability (as defined in the Company's 2021 Equity Incentive Plan ("the Plan")).

F2 · kind: (Continued from Footnote 1) The "Retention Period" commenced on the Effective Date and ends upon the earliest of (i) the 12-month anniversary of the Effective Date and (ii) a Corporate Transaction (as defined in the Plan). All of the other terms of the options remain unchanged. Such transactions were exempt pursuant to Rule 16b-6(d) and Rule 16b-3 of the Exchange Act, as applicable.

F5 · derivative.exercise_date: The option vests as to 1/48th of the total shares monthly, commencing February 17, 2023, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

Read SEC document
November 06, 2025 Filed Nov 7, 2025 23:16 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 GrantStock Option (right to buy Common Stock) · Derivative 397,000 $0.00 Strike: $8.99 $0.00
Disclosure

SEC source: 0001863107-25-000003 · form4-11072025_111140.xml · derivative · entry 4

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 397,000

Underlying: Common Stock · 397,000 shares

Expires 2032-01-17

F1 · kind: On October 7, 2025, the Issuer's Board of Directors approved an option repricing (the "Repricing") whereby the Reporting Person's options were repriced on November 6, 2025 (the "Effective Date") with a new exercise price of $8.99 (if lower than the original exercise price), the closing price on Nasdaq as of the Effective Date. In order to exercise the repriced options at the new exercise price, the Reporting Person is required to remain in service with the Issuer through the Retention Period; provided that the additional premium payment will not be required if the Reporting Person's service to the Issuer is terminated by reason of death or Disability (as defined in the Company's 2021 Equity Incentive Plan ("the Plan")).

F2 · kind: (Continued from Footnote 1) The "Retention Period" commenced on the Effective Date and ends upon the earliest of (i) the 12-month anniversary of the Effective Date and (ii) a Corporate Transaction (as defined in the Plan). All of the other terms of the options remain unchanged. Such transactions were exempt pursuant to Rule 16b-6(d) and Rule 16b-3 of the Exchange Act, as applicable.

F4 · derivative.exercise_date: The option vests as to 2.0833% of the total shares monthly, with 100% of the total shares vested on January 18, 2026, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

Read SEC document
November 06, 2025 Filed Nov 7, 2025 23:16 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Disposition to issuerStock Option (right to buy Common Stock) · Derivative 397,000 $0.00 Strike: $14.26 $0.00
Disclosure

SEC source: 0001863107-25-000003 · form4-11072025_111140.xml · derivative · entry 3

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 397,000 shares

Expires 2032-01-17

F1 · kind: On October 7, 2025, the Issuer's Board of Directors approved an option repricing (the "Repricing") whereby the Reporting Person's options were repriced on November 6, 2025 (the "Effective Date") with a new exercise price of $8.99 (if lower than the original exercise price), the closing price on Nasdaq as of the Effective Date. In order to exercise the repriced options at the new exercise price, the Reporting Person is required to remain in service with the Issuer through the Retention Period; provided that the additional premium payment will not be required if the Reporting Person's service to the Issuer is terminated by reason of death or Disability (as defined in the Company's 2021 Equity Incentive Plan ("the Plan")).

F2 · kind: (Continued from Footnote 1) The "Retention Period" commenced on the Effective Date and ends upon the earliest of (i) the 12-month anniversary of the Effective Date and (ii) a Corporate Transaction (as defined in the Plan). All of the other terms of the options remain unchanged. Such transactions were exempt pursuant to Rule 16b-6(d) and Rule 16b-3 of the Exchange Act, as applicable.

F4 · derivative.exercise_date: The option vests as to 2.0833% of the total shares monthly, with 100% of the total shares vested on January 18, 2026, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

Read SEC document
November 06, 2025 Filed Nov 7, 2025 23:16 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 GrantStock Option (right to buy Common Stock) · Derivative 1,463,134 $0.00 Strike: $8.99 $0.00
Disclosure

SEC source: 0001863107-25-000003 · form4-11072025_111140.xml · derivative · entry 2

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,463,134

Underlying: Common Stock · 1,463,134 shares

Expires 2031-05-25

F1 · kind: On October 7, 2025, the Issuer's Board of Directors approved an option repricing (the "Repricing") whereby the Reporting Person's options were repriced on November 6, 2025 (the "Effective Date") with a new exercise price of $8.99 (if lower than the original exercise price), the closing price on Nasdaq as of the Effective Date. In order to exercise the repriced options at the new exercise price, the Reporting Person is required to remain in service with the Issuer through the Retention Period; provided that the additional premium payment will not be required if the Reporting Person's service to the Issuer is terminated by reason of death or Disability (as defined in the Company's 2021 Equity Incentive Plan ("the Plan")).

F2 · kind: (Continued from Footnote 1) The "Retention Period" commenced on the Effective Date and ends upon the earliest of (i) the 12-month anniversary of the Effective Date and (ii) a Corporate Transaction (as defined in the Plan). All of the other terms of the options remain unchanged. Such transactions were exempt pursuant to Rule 16b-6(d) and Rule 16b-3 of the Exchange Act, as applicable.

F3 · derivative.exercise_date: The options are fully vested.

Read SEC document
November 06, 2025 Filed Nov 7, 2025 23:16 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Disposition to issuerStock Option (right to buy Common Stock) · Derivative 1,463,134 $0.00 Strike: $16.00 $0.00
Disclosure

SEC source: 0001863107-25-000003 · form4-11072025_111140.xml · derivative · entry 1

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,463,134 shares

Expires 2031-05-25

F1 · kind: On October 7, 2025, the Issuer's Board of Directors approved an option repricing (the "Repricing") whereby the Reporting Person's options were repriced on November 6, 2025 (the "Effective Date") with a new exercise price of $8.99 (if lower than the original exercise price), the closing price on Nasdaq as of the Effective Date. In order to exercise the repriced options at the new exercise price, the Reporting Person is required to remain in service with the Issuer through the Retention Period; provided that the additional premium payment will not be required if the Reporting Person's service to the Issuer is terminated by reason of death or Disability (as defined in the Company's 2021 Equity Incentive Plan ("the Plan")).

F2 · kind: (Continued from Footnote 1) The "Retention Period" commenced on the Effective Date and ends upon the earliest of (i) the 12-month anniversary of the Effective Date and (ii) a Corporate Transaction (as defined in the Plan). All of the other terms of the options remain unchanged. Such transactions were exempt pursuant to Rule 16b-6(d) and Rule 16b-3 of the Exchange Act, as applicable.

F3 · derivative.exercise_date: The options are fully vested.

Read SEC document
August 18, 2025 Filed Aug 19, 2025 23:37 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 SaleCommon Stock 16,058 $6.77 $108,666.09
Disclosure

SEC source: 0001415889-25-022380 · form4-08192025_110856.xml · nonDerivative · entry 5

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 161,365

F2 · kind: The sale of shares is for the sole purpose of covering the Reporting Person's tax liability with respect to the settlement of RSUs.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold as part of block trades for multiple security holders of the Issuer at prices ranging from $6.65 to $6.87, inclusive. The Reporting Person undertakes to provide to the Issuer, any securityholder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein with regard to the block trade.

Read SEC document
August 15, 2025 Filed Aug 19, 2025 23:37 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionRestricted Stock Unit (RSU) · Derivative 11,687 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-022380 · form4-08192025_110856.xml · derivative · entry 14

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 151,939

Underlying: Common Stock · 11,687 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

F9 · derivative.exercise_date: The RSUs will vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F10 · derivative.expiration_date: RSUs do not expire; they either vest or are canceled prior to the vesting date.

Read SEC document
August 15, 2025 Filed Aug 19, 2025 23:37 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionRestricted Stock Unit (RSU) · Derivative 11,687 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-022380 · form4-08192025_110856.xml · derivative · entry 13

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 105,191

Underlying: Common Stock · 11,687 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

F9 · derivative.exercise_date: The RSUs will vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F10 · derivative.expiration_date: RSUs do not expire; they either vest or are canceled prior to the vesting date.

Read SEC document
August 15, 2025 Filed Aug 19, 2025 23:37 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionRestricted Stock Unit (RSU) · Derivative 4,750 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-022380 · form4-08192025_110856.xml · derivative · entry 12

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,750

Underlying: Common Stock · 4,750 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

F9 · derivative.exercise_date: The RSUs will vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F10 · derivative.expiration_date: RSUs do not expire; they either vest or are canceled prior to the vesting date.

Read SEC document
August 15, 2025 Filed Aug 19, 2025 23:37 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionRestricted Stock Unit (RSU) · Derivative 3,562 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-022380 · form4-08192025_110856.xml · derivative · entry 11

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,570

Underlying: Common Stock · 3,562 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

F9 · derivative.exercise_date: The RSUs will vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F10 · derivative.expiration_date: RSUs do not expire; they either vest or are canceled prior to the vesting date.

Read SEC document
August 15, 2025 Filed Aug 19, 2025 23:37 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionCommon Stock 11,687 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-022380 · form4-08192025_110856.xml · nonDerivative · entry 4

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 177,423

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

Read SEC document
August 15, 2025 Filed Aug 19, 2025 23:37 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionCommon Stock 11,687 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-022380 · form4-08192025_110856.xml · nonDerivative · entry 3

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 165,736

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

Read SEC document
August 15, 2025 Filed Aug 19, 2025 23:37 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionCommon Stock 4,750 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-022380 · form4-08192025_110856.xml · nonDerivative · entry 2

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 154,049

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

Read SEC document
August 15, 2025 Filed Aug 19, 2025 23:37 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionCommon Stock 3,562 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-022380 · form4-08192025_110856.xml · nonDerivative · entry 1

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 149,299

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

Read SEC document
July 10, 2025 Filed Jul 14, 2025 20:18 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 GiftCommon Stock 179,417 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-019707 · form4-07142025_080742.xml · nonDerivative · entry 8

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Indirect · By Bender Revocable Trust

Disclosed balance after: 1,408,285

F8 · shares: Represents an annuity payment made by The Melissa Bender 2023 Grantor Retained Annuity Trust, dated June 27, 2023 ("Melissa Bender 2023 GRAT"), which was transferred by the Reporting Person as a bona fide gift for no consideration to the Bender Revocable Trust dated January 18, 2017.

F3 · ownership.nature: Represents shares held by the Bender Revocable Trust dated January 18, 2017.

Read SEC document
July 10, 2025 Filed Jul 14, 2025 20:18 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 GiftCommon Stock 179,417 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-019707 · form4-07142025_080742.xml · nonDerivative · entry 7

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 18,197

F8 · shares: Represents an annuity payment made by The Melissa Bender 2023 Grantor Retained Annuity Trust, dated June 27, 2023 ("Melissa Bender 2023 GRAT"), which was transferred by the Reporting Person as a bona fide gift for no consideration to the Bender Revocable Trust dated January 18, 2017.

F9 · ownership.nature: Represents shares held by the Melissa Bender 2023 GRAT.

Read SEC document
July 10, 2025 Filed Jul 14, 2025 20:18 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 GiftCommon Stock 199,202 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-019707 · form4-07142025_080742.xml · nonDerivative · entry 5

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 20,204

F6 · shares: Represents an annuity payment made by The Jeremy Bender 2023 Grantor Retained Annuity Trust dated June 27, 2023 ("Jeremy Bender 2023 GRAT"), which was transferred by the Reporting Person as a bona fide gift for no consideration to the Bender Revocable Trust dated January 18, 2017.

F7 · ownership.nature: Represents shares held by the Jeremy Bender 2023 GRAT.

Read SEC document
July 10, 2025 Filed Jul 14, 2025 20:18 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 GiftCommon Stock 74,328 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-019707 · form4-07142025_080742.xml · nonDerivative · entry 4

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Indirect · By Bender Revocable Trust

Disclosed balance after: 1,029,666

F4 · shares: Represents an annuity payment made by The Melissa Bender 2022 Grantor Retained Annuity Trust under Irrevocable Trust Agreement dated March 29, 2022 ("Melissa Bender 2022 GRAT"), which was transferred by the Reporting Person as a bona fide gift for no consideration to the Bender Revocable Trust dated January 18, 2017.

F3 · ownership.nature: Represents shares held by the Bender Revocable Trust dated January 18, 2017.

Read SEC document
July 10, 2025 Filed Jul 14, 2025 20:18 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 GiftCommon Stock 74,328 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-019707 · form4-07142025_080742.xml · nonDerivative · entry 3

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 147,702

F4 · shares: Represents an annuity payment made by The Melissa Bender 2022 Grantor Retained Annuity Trust under Irrevocable Trust Agreement dated March 29, 2022 ("Melissa Bender 2022 GRAT"), which was transferred by the Reporting Person as a bona fide gift for no consideration to the Bender Revocable Trust dated January 18, 2017.

F5 · ownership.nature: Represents shares held by the Melissa Bender 2022 GRAT of which the Reporting Person's spouse is trustee.

Read SEC document
July 10, 2025 Filed Jul 14, 2025 20:18 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 GiftCommon Stock 148,312 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-019707 · form4-07142025_080742.xml · nonDerivative · entry 2

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Indirect · By Bender Revocable Trust

Disclosed balance after: 955,338

F1 · shares: Represents an annuity payment made by The Jeremy Bender 2022 Grantor Retained Annuity Trust under Irrevocable Trust Agreement dated March 29, 2022 ("Jeremy Bender 2022 GRAT"), which was transferred by the Reporting Person as a bona fide gift for no consideration to the Bender Revocable Trust dated January 18, 2017, as amended, Jeremy Bender and Melissa C. Bender, Trustees ("Bender Revocable Trust dated January 18, 2017").

F3 · ownership.nature: Represents shares held by the Bender Revocable Trust dated January 18, 2017.

Read SEC document
July 10, 2025 Filed Jul 14, 2025 20:18 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 GiftCommon Stock 148,312 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-019707 · form4-07142025_080742.xml · nonDerivative · entry 1

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 14,450

F1 · shares: Represents an annuity payment made by The Jeremy Bender 2022 Grantor Retained Annuity Trust under Irrevocable Trust Agreement dated March 29, 2022 ("Jeremy Bender 2022 GRAT"), which was transferred by the Reporting Person as a bona fide gift for no consideration to the Bender Revocable Trust dated January 18, 2017, as amended, Jeremy Bender and Melissa C. Bender, Trustees ("Bender Revocable Trust dated January 18, 2017").

F2 · ownership.nature: Represents shares held by the Jeremy Bender 2022 GRAT of which the Reporting Person is trustee.

Read SEC document
May 16, 2025 Filed May 19, 2025 21:44 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 SaleCommon Stock 13,964 $6.26 $87,385.32
Disclosure

SEC source: 0001415889-25-013676 · form4-05192025_090520.xml · nonDerivative · entry 5

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 145,737

F2 · kind: The sale of shares is for the sole purpose of covering the Reporting Person's tax liability with respect to the settlement of RSUs.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold as part of block trades for multiple security holders of the Issuer at prices ranging from $6.19 to $6.32, inclusive. The Reporting Person undertakes to provide to the Issuer, any securityholder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein with regard to the block trade.

Read SEC document
May 15, 2025 Filed May 19, 2025 21:44 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionRestricted Stock Unit (RSU) · Derivative 11,687 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-013676 · form4-05192025_090520.xml · derivative · entry 14

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 163,626

Underlying: Common Stock · 11,687 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

F9 · derivative.exercise_date: The RSUs will vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F10 · derivative.expiration_date: RSUs do not expire; they either vest or are canceled prior to the vesting date.

Read SEC document
May 15, 2025 Filed May 19, 2025 21:44 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionRestricted Stock Unit (RSU) · Derivative 11,687 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-013676 · form4-05192025_090520.xml · derivative · entry 13

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 116,878

Underlying: Common Stock · 11,687 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

F9 · derivative.exercise_date: The RSUs will vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F10 · derivative.expiration_date: RSUs do not expire; they either vest or are canceled prior to the vesting date.

Read SEC document
May 15, 2025 Filed May 19, 2025 21:44 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionRestricted Stock Unit (RSU) · Derivative 4,750 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-013676 · form4-05192025_090520.xml · derivative · entry 12

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,500

Underlying: Common Stock · 4,750 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

F9 · derivative.exercise_date: The RSUs will vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F10 · derivative.expiration_date: RSUs do not expire; they either vest or are canceled prior to the vesting date.

Read SEC document
May 15, 2025 Filed May 19, 2025 21:44 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionRestricted Stock Unit (RSU) · Derivative 3,562 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-013676 · form4-05192025_090520.xml · derivative · entry 11

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,132

Underlying: Common Stock · 3,562 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

F9 · derivative.exercise_date: The RSUs will vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F10 · derivative.expiration_date: RSUs do not expire; they either vest or are canceled prior to the vesting date.

Read SEC document
May 15, 2025 Filed May 19, 2025 21:44 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionCommon Stock 11,687 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-013676 · form4-05192025_090520.xml · nonDerivative · entry 4

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 159,701

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

Read SEC document
May 15, 2025 Filed May 19, 2025 21:44 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionCommon Stock 11,687 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-013676 · form4-05192025_090520.xml · nonDerivative · entry 3

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 148,014

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

Read SEC document
May 15, 2025 Filed May 19, 2025 21:44 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionCommon Stock 4,750 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-013676 · form4-05192025_090520.xml · nonDerivative · entry 2

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 136,327

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

Read SEC document
May 15, 2025 Filed May 19, 2025 21:44 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionCommon Stock 3,562 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-013676 · form4-05192025_090520.xml · nonDerivative · entry 1

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 131,577

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

Read SEC document
February 18, 2025 Filed Feb 21, 2025 23:05 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 SaleCommon Stock 12,048 $11.96 $144,130.22
Disclosure

SEC source: 0001415889-25-005154 · form4-02212025_110239.xml · nonDerivative · entry 5

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 128,015

F2 · kind: The sale of shares is for the sole purpose of covering the Reporting Person's tax liability with respect to the settlement of RSUs.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold as part of block trades for multiple security holders of the Issuer at prices ranging from $11.86 to $12.18, inclusive. The Reporting Person undertakes to provide to the Issuer, any securityholder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein with regard to the block trade.

Read SEC document
February 15, 2025 Filed Feb 21, 2025 23:05 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionRestricted Stock Unit (RSU) · Derivative 11,687 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-005154 · form4-02212025_110239.xml · derivative · entry 14

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 175,313

Underlying: Common Stock · 11,687 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

F9 · derivative.exercise_date: The RSUs will vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F10 · derivative.expiration_date: RSUs do not expire; they either vest or are canceled prior to the vesting date.

Read SEC document
February 15, 2025 Filed Feb 21, 2025 23:05 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionRestricted Stock Unit (RSU) · Derivative 11,687 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-005154 · form4-02212025_110239.xml · derivative · entry 13

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 128,565

Underlying: Common Stock · 11,687 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

F9 · derivative.exercise_date: The RSUs will vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F10 · derivative.expiration_date: RSUs do not expire; they either vest or are canceled prior to the vesting date.

Read SEC document
February 15, 2025 Filed Feb 21, 2025 23:05 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionRestricted Stock Unit (RSU) · Derivative 4,750 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-005154 · form4-02212025_110239.xml · derivative · entry 12

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,250

Underlying: Common Stock · 4,750 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

F9 · derivative.exercise_date: The RSUs will vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F10 · derivative.expiration_date: RSUs do not expire; they either vest or are canceled prior to the vesting date.

Read SEC document
February 15, 2025 Filed Feb 21, 2025 23:05 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionRestricted Stock Unit (RSU) · Derivative 3,562 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-005154 · form4-02212025_110239.xml · derivative · entry 11

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,694

Underlying: Common Stock · 3,562 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

F9 · derivative.exercise_date: The RSUs will vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F10 · derivative.expiration_date: RSUs do not expire; they either vest or are canceled prior to the vesting date.

Read SEC document
February 15, 2025 Filed Feb 21, 2025 23:05 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionCommon Stock 11,687 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-005154 · form4-02212025_110239.xml · nonDerivative · entry 4

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 140,063

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

Read SEC document
February 15, 2025 Filed Feb 21, 2025 23:05 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionCommon Stock 11,687 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-005154 · form4-02212025_110239.xml · nonDerivative · entry 3

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 128,376

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

Read SEC document
February 15, 2025 Filed Feb 21, 2025 23:05 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionCommon Stock 4,750 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-005154 · form4-02212025_110239.xml · nonDerivative · entry 2

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 116,689

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

Read SEC document
February 15, 2025 Filed Feb 21, 2025 23:05 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionCommon Stock 3,562 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-005154 · form4-02212025_110239.xml · nonDerivative · entry 1

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 111,939

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

Read SEC document
February 05, 2025 Filed Feb 6, 2025 21:30 UTC Mereo BioPharma Group plc MREO · Entity 7264 GrantDeferred Restricted Stock Units · Derivative 16,768 Not disclosed Not disclosed
Disclosure

SEC source: 0000950170-25-015433 · ownership.xml · derivative · entry 2

Bender Jeremy · CIK 0001863107 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,768

Underlying: American Depository Shares · 16,768 shares

Expires not disclosed

F3 · derivative.exercise_price: Deferred restricted stock units ("DRSU") are granted to non-executive directors who elected to receive DRSUs in the form of ADSs in lieu of annual cash compensation. DRSUs vest in substantially equal monthly installments over the plan year following the grant date. Payment of DRSUs in ADSs will generally be made 180 days following separation of service.

F3 · price: Deferred restricted stock units ("DRSU") are granted to non-executive directors who elected to receive DRSUs in the form of ADSs in lieu of annual cash compensation. DRSUs vest in substantially equal monthly installments over the plan year following the grant date. Payment of DRSUs in ADSs will generally be made 180 days following separation of service.

F3 · derivative.exercise_date: Deferred restricted stock units ("DRSU") are granted to non-executive directors who elected to receive DRSUs in the form of ADSs in lieu of annual cash compensation. DRSUs vest in substantially equal monthly installments over the plan year following the grant date. Payment of DRSUs in ADSs will generally be made 180 days following separation of service.

F3 · derivative.expiration_date: Deferred restricted stock units ("DRSU") are granted to non-executive directors who elected to receive DRSUs in the form of ADSs in lieu of annual cash compensation. DRSUs vest in substantially equal monthly installments over the plan year following the grant date. Payment of DRSUs in ADSs will generally be made 180 days following separation of service.

F2 · derivative.underlying: Each American Depositary Share ("ADS") represents five ordinary shares, nominal value GBP 0.003 per ordinary share, of the Issuer

Read SEC document
February 05, 2025 Filed Feb 6, 2025 21:30 UTC Mereo BioPharma Group plc MREO · Entity 7264 GrantShare Options (Right to buy) · Derivative 55,000 $0.00 Strike: $3.16 $0.00
Disclosure

SEC source: 0000950170-25-015433 · ownership.xml · derivative · entry 1

Bender Jeremy · CIK 0001863107 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,000

Underlying: American Depositary Shares · 55,000 shares

Expires 2035-02-05

F1 · derivative.exercise_date: Vests in substantially equal monthly installments over a one year period from the February 5, 2025 grant date

F2 · derivative.underlying: Each American Depositary Share ("ADS") represents five ordinary shares, nominal value GBP 0.003 per ordinary share, of the Issuer

Read SEC document
January 15, 2025 Filed Jan 31, 2025 21:36 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 GrantRestricted Stock Units · Derivative 187,000 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-002491 · form4-01312025_090113.xml · derivative · entry 2

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 187,000

Underlying: Common Stock · 187,000 shares

Expires not disclosed

F2 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement.

F3 · derivative.exercise_date: The RSUs vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F4 · derivative.expiration_date: RSUs do not expire; they either vest or are canceled prior to the vesting date.

Read SEC document
January 15, 2025 Filed Jan 31, 2025 21:36 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 GrantStock Option (right to buy Common Stock) · Derivative 286,000 $0.00 Strike: $11.87 $0.00
Disclosure

SEC source: 0001415889-25-002491 · form4-01312025_090113.xml · derivative · entry 1

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 286,000

Underlying: Common Stock · 286,000 shares

Expires 2035-01-14

F1 · derivative.exercise_date: The option vests as to 1/48th of the total shares monthly, commencing February 15, 2025, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

Read SEC document
November 18, 2024 Filed Nov 19, 2024 21:36 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 SaleCommon Stock 10,554 $13.21 $139,420.45
Disclosure

SEC source: 0001415889-24-027239 · form4-11192024_091115.xml · nonDerivative · entry 4

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 108,377

F2 · kind: The sale of shares is for the sole purpose of covering the Reporting Person's tax liability with respect to the settlement of RSUs.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold as part of block trades for multiple security holders of the Issuer at prices ranging from $13.02 to $13.45, inclusive. The Reporting Person undertakes to provide to the Issuer, any securityholder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein with regard to the block trade.

Read SEC document
November 15, 2024 Filed Nov 19, 2024 21:36 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionRestricted Stock Unit (RSU) · Derivative 11,687 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-027239 · form4-11192024_091115.xml · derivative · entry 12

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 140,252

Underlying: Common Stock · 11,687 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

F9 · derivative.exercise_date: The RSUs will vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F10 · derivative.expiration_date: RSUs do not expire; they either vest or are canceled prior to the vesting date.

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November 15, 2024 Filed Nov 19, 2024 21:36 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionRestricted Stock Unit (RSU) · Derivative 4,750 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-027239 · form4-11192024_091115.xml · derivative · entry 11

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,000

Underlying: Common Stock · 4,750 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

F9 · derivative.exercise_date: The RSUs will vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F10 · derivative.expiration_date: RSUs do not expire; they either vest or are canceled prior to the vesting date.

Read SEC document
November 15, 2024 Filed Nov 19, 2024 21:36 UTC Day One Biopharmaceuticals, Inc. DAWN · Entity 51180 Exercise / conversionRestricted Stock Unit (RSU) · Derivative 3,562 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-027239 · form4-11192024_091115.xml · derivative · entry 10

Bender Jeremy · CIK 0001863107 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,256

Underlying: Common Stock · 3,562 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.

F9 · derivative.exercise_date: The RSUs will vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F10 · derivative.expiration_date: RSUs do not expire; they either vest or are canceled prior to the vesting date.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.