Carvajal Alejandra

SEC source: 0001610717-26-000351 · form4.xml · derivative · entry 2

Carvajal Alejandra · CIK 0001645755 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 450,000

Underlying: Common Stock · 450,000 shares

Expires 2036-08-02

F3 · derivative.exercise_date: 25% of the shares subject to the option vest on the one-year anniversary measured from August 3, 2026 (the "Vesting Commencement Date"), and 1/48 monthly thereafter such that 100% of the shares subject to the option will be fully vested and exercisable on the fourth anniversary of the Vesting Commencement Date, subject to the Reporting Person's continued service to the Issuer through each such date.

SEC source: 0001610717-26-000351 · form4.xml · nonDerivative · entry 1

Carvajal Alejandra · CIK 0001645755 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 100,000

F1 · shares: Constitute restricted stock units ("RSUs") for which the Reporting Person is entitled to receive one (1) share of Common Stock for each RSU upon vesting. 25% of the RSUs vest annually on September 15 of each year, with the first 25% vesting on September 15, 2027, subject to the Reporting Person's continued service to the Issuer through each such date.

F2 · balance_after: Includes 100,000 RSUs.

SEC source: 0001104659-26-001380 · tm261736-9_4seq1.xml · derivative · entry 13

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,166 shares

Expires not disclosed

F5 · price: Pursuant to the terms of the Merger Agreement, effective as of immediately prior to the Effective Time, each Company restricted stock unit award, which represented the right to receive one share of Common Stock, that was then outstanding was automatically cancelled and converted into the right to receive, without interest and subject to deduction for any required tax withholding, the Offer Price.

F5 · derivative.exercise_date: Pursuant to the terms of the Merger Agreement, effective as of immediately prior to the Effective Time, each Company restricted stock unit award, which represented the right to receive one share of Common Stock, that was then outstanding was automatically cancelled and converted into the right to receive, without interest and subject to deduction for any required tax withholding, the Offer Price.

F5 · derivative.expiration_date: Pursuant to the terms of the Merger Agreement, effective as of immediately prior to the Effective Time, each Company restricted stock unit award, which represented the right to receive one share of Common Stock, that was then outstanding was automatically cancelled and converted into the right to receive, without interest and subject to deduction for any required tax withholding, the Offer Price.

SEC source: 0001104659-26-001380 · tm261736-9_4seq1.xml · derivative · entry 12

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,500 shares

Expires not disclosed

F5 · price: Pursuant to the terms of the Merger Agreement, effective as of immediately prior to the Effective Time, each Company restricted stock unit award, which represented the right to receive one share of Common Stock, that was then outstanding was automatically cancelled and converted into the right to receive, without interest and subject to deduction for any required tax withholding, the Offer Price.

F5 · derivative.exercise_date: Pursuant to the terms of the Merger Agreement, effective as of immediately prior to the Effective Time, each Company restricted stock unit award, which represented the right to receive one share of Common Stock, that was then outstanding was automatically cancelled and converted into the right to receive, without interest and subject to deduction for any required tax withholding, the Offer Price.

F5 · derivative.expiration_date: Pursuant to the terms of the Merger Agreement, effective as of immediately prior to the Effective Time, each Company restricted stock unit award, which represented the right to receive one share of Common Stock, that was then outstanding was automatically cancelled and converted into the right to receive, without interest and subject to deduction for any required tax withholding, the Offer Price.

SEC source: 0001104659-26-001380 · tm261736-9_4seq1.xml · derivative · entry 11

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 717 shares

Expires not disclosed

F5 · price: Pursuant to the terms of the Merger Agreement, effective as of immediately prior to the Effective Time, each Company restricted stock unit award, which represented the right to receive one share of Common Stock, that was then outstanding was automatically cancelled and converted into the right to receive, without interest and subject to deduction for any required tax withholding, the Offer Price.

F5 · derivative.exercise_date: Pursuant to the terms of the Merger Agreement, effective as of immediately prior to the Effective Time, each Company restricted stock unit award, which represented the right to receive one share of Common Stock, that was then outstanding was automatically cancelled and converted into the right to receive, without interest and subject to deduction for any required tax withholding, the Offer Price.

F5 · derivative.expiration_date: Pursuant to the terms of the Merger Agreement, effective as of immediately prior to the Effective Time, each Company restricted stock unit award, which represented the right to receive one share of Common Stock, that was then outstanding was automatically cancelled and converted into the right to receive, without interest and subject to deduction for any required tax withholding, the Offer Price.

SEC source: 0001104659-26-001380 · tm261736-9_4seq1.xml · derivative · entry 10

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 100 shares

Expires not disclosed

F5 · price: Pursuant to the terms of the Merger Agreement, effective as of immediately prior to the Effective Time, each Company restricted stock unit award, which represented the right to receive one share of Common Stock, that was then outstanding was automatically cancelled and converted into the right to receive, without interest and subject to deduction for any required tax withholding, the Offer Price.

F5 · derivative.exercise_date: Pursuant to the terms of the Merger Agreement, effective as of immediately prior to the Effective Time, each Company restricted stock unit award, which represented the right to receive one share of Common Stock, that was then outstanding was automatically cancelled and converted into the right to receive, without interest and subject to deduction for any required tax withholding, the Offer Price.

F5 · derivative.expiration_date: Pursuant to the terms of the Merger Agreement, effective as of immediately prior to the Effective Time, each Company restricted stock unit award, which represented the right to receive one share of Common Stock, that was then outstanding was automatically cancelled and converted into the right to receive, without interest and subject to deduction for any required tax withholding, the Offer Price.

SEC source: 0001104659-26-001380 · tm261736-9_4seq1.xml · derivative · entry 9

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 7,921 shares

Expires not disclosed

F4 · price: Pursuant to the terms of the Merger Agreement, effective as of 10 business days prior to the closing of the Merger (the "Acceleration Date"), each Issuer Option then outstanding and unexercised that had an exercise price per Share that was equal to or greater than the Upfront Cash Consideration (each, an "OTM Option"), became fully vested and exercisable up to and through the closing of regular trading on the Nasdaq Stock Market on the fifth business day following the Acceleration Date (the "Last Exercise Date"). OTM Options not exercised on or prior to the Last Exercise Date were cancelled and ceased to exist as of the Effective Time, and no consideration was delivered in exchange for such OTM Option.

F4 · derivative.exercise_date: Pursuant to the terms of the Merger Agreement, effective as of 10 business days prior to the closing of the Merger (the "Acceleration Date"), each Issuer Option then outstanding and unexercised that had an exercise price per Share that was equal to or greater than the Upfront Cash Consideration (each, an "OTM Option"), became fully vested and exercisable up to and through the closing of regular trading on the Nasdaq Stock Market on the fifth business day following the Acceleration Date (the "Last Exercise Date"). OTM Options not exercised on or prior to the Last Exercise Date were cancelled and ceased to exist as of the Effective Time, and no consideration was delivered in exchange for such OTM Option.

F4 · derivative.expiration_date: Pursuant to the terms of the Merger Agreement, effective as of 10 business days prior to the closing of the Merger (the "Acceleration Date"), each Issuer Option then outstanding and unexercised that had an exercise price per Share that was equal to or greater than the Upfront Cash Consideration (each, an "OTM Option"), became fully vested and exercisable up to and through the closing of regular trading on the Nasdaq Stock Market on the fifth business day following the Acceleration Date (the "Last Exercise Date"). OTM Options not exercised on or prior to the Last Exercise Date were cancelled and ceased to exist as of the Effective Time, and no consideration was delivered in exchange for such OTM Option.

SEC source: 0001104659-26-001380 · tm261736-9_4seq1.xml · derivative · entry 8

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,078 shares

Expires not disclosed

F4 · price: Pursuant to the terms of the Merger Agreement, effective as of 10 business days prior to the closing of the Merger (the "Acceleration Date"), each Issuer Option then outstanding and unexercised that had an exercise price per Share that was equal to or greater than the Upfront Cash Consideration (each, an "OTM Option"), became fully vested and exercisable up to and through the closing of regular trading on the Nasdaq Stock Market on the fifth business day following the Acceleration Date (the "Last Exercise Date"). OTM Options not exercised on or prior to the Last Exercise Date were cancelled and ceased to exist as of the Effective Time, and no consideration was delivered in exchange for such OTM Option.

F4 · derivative.exercise_date: Pursuant to the terms of the Merger Agreement, effective as of 10 business days prior to the closing of the Merger (the "Acceleration Date"), each Issuer Option then outstanding and unexercised that had an exercise price per Share that was equal to or greater than the Upfront Cash Consideration (each, an "OTM Option"), became fully vested and exercisable up to and through the closing of regular trading on the Nasdaq Stock Market on the fifth business day following the Acceleration Date (the "Last Exercise Date"). OTM Options not exercised on or prior to the Last Exercise Date were cancelled and ceased to exist as of the Effective Time, and no consideration was delivered in exchange for such OTM Option.

F4 · derivative.expiration_date: Pursuant to the terms of the Merger Agreement, effective as of 10 business days prior to the closing of the Merger (the "Acceleration Date"), each Issuer Option then outstanding and unexercised that had an exercise price per Share that was equal to or greater than the Upfront Cash Consideration (each, an "OTM Option"), became fully vested and exercisable up to and through the closing of regular trading on the Nasdaq Stock Market on the fifth business day following the Acceleration Date (the "Last Exercise Date"). OTM Options not exercised on or prior to the Last Exercise Date were cancelled and ceased to exist as of the Effective Time, and no consideration was delivered in exchange for such OTM Option.

SEC source: 0001104659-26-001380 · tm261736-9_4seq1.xml · derivative · entry 7

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 4,922 shares

Expires not disclosed

F4 · price: Pursuant to the terms of the Merger Agreement, effective as of 10 business days prior to the closing of the Merger (the "Acceleration Date"), each Issuer Option then outstanding and unexercised that had an exercise price per Share that was equal to or greater than the Upfront Cash Consideration (each, an "OTM Option"), became fully vested and exercisable up to and through the closing of regular trading on the Nasdaq Stock Market on the fifth business day following the Acceleration Date (the "Last Exercise Date"). OTM Options not exercised on or prior to the Last Exercise Date were cancelled and ceased to exist as of the Effective Time, and no consideration was delivered in exchange for such OTM Option.

F4 · derivative.exercise_date: Pursuant to the terms of the Merger Agreement, effective as of 10 business days prior to the closing of the Merger (the "Acceleration Date"), each Issuer Option then outstanding and unexercised that had an exercise price per Share that was equal to or greater than the Upfront Cash Consideration (each, an "OTM Option"), became fully vested and exercisable up to and through the closing of regular trading on the Nasdaq Stock Market on the fifth business day following the Acceleration Date (the "Last Exercise Date"). OTM Options not exercised on or prior to the Last Exercise Date were cancelled and ceased to exist as of the Effective Time, and no consideration was delivered in exchange for such OTM Option.

F4 · derivative.expiration_date: Pursuant to the terms of the Merger Agreement, effective as of 10 business days prior to the closing of the Merger (the "Acceleration Date"), each Issuer Option then outstanding and unexercised that had an exercise price per Share that was equal to or greater than the Upfront Cash Consideration (each, an "OTM Option"), became fully vested and exercisable up to and through the closing of regular trading on the Nasdaq Stock Market on the fifth business day following the Acceleration Date (the "Last Exercise Date"). OTM Options not exercised on or prior to the Last Exercise Date were cancelled and ceased to exist as of the Effective Time, and no consideration was delivered in exchange for such OTM Option.

SEC source: 0001104659-26-001380 · tm261736-9_4seq1.xml · derivative · entry 6

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,527 shares

Expires not disclosed

F4 · price: Pursuant to the terms of the Merger Agreement, effective as of 10 business days prior to the closing of the Merger (the "Acceleration Date"), each Issuer Option then outstanding and unexercised that had an exercise price per Share that was equal to or greater than the Upfront Cash Consideration (each, an "OTM Option"), became fully vested and exercisable up to and through the closing of regular trading on the Nasdaq Stock Market on the fifth business day following the Acceleration Date (the "Last Exercise Date"). OTM Options not exercised on or prior to the Last Exercise Date were cancelled and ceased to exist as of the Effective Time, and no consideration was delivered in exchange for such OTM Option.

F4 · derivative.exercise_date: Pursuant to the terms of the Merger Agreement, effective as of 10 business days prior to the closing of the Merger (the "Acceleration Date"), each Issuer Option then outstanding and unexercised that had an exercise price per Share that was equal to or greater than the Upfront Cash Consideration (each, an "OTM Option"), became fully vested and exercisable up to and through the closing of regular trading on the Nasdaq Stock Market on the fifth business day following the Acceleration Date (the "Last Exercise Date"). OTM Options not exercised on or prior to the Last Exercise Date were cancelled and ceased to exist as of the Effective Time, and no consideration was delivered in exchange for such OTM Option.

F4 · derivative.expiration_date: Pursuant to the terms of the Merger Agreement, effective as of 10 business days prior to the closing of the Merger (the "Acceleration Date"), each Issuer Option then outstanding and unexercised that had an exercise price per Share that was equal to or greater than the Upfront Cash Consideration (each, an "OTM Option"), became fully vested and exercisable up to and through the closing of regular trading on the Nasdaq Stock Market on the fifth business day following the Acceleration Date (the "Last Exercise Date"). OTM Options not exercised on or prior to the Last Exercise Date were cancelled and ceased to exist as of the Effective Time, and no consideration was delivered in exchange for such OTM Option.

SEC source: 0001104659-26-001380 · tm261736-9_4seq1.xml · derivative · entry 5

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,800 shares

Expires not disclosed

F4 · price: Pursuant to the terms of the Merger Agreement, effective as of 10 business days prior to the closing of the Merger (the "Acceleration Date"), each Issuer Option then outstanding and unexercised that had an exercise price per Share that was equal to or greater than the Upfront Cash Consideration (each, an "OTM Option"), became fully vested and exercisable up to and through the closing of regular trading on the Nasdaq Stock Market on the fifth business day following the Acceleration Date (the "Last Exercise Date"). OTM Options not exercised on or prior to the Last Exercise Date were cancelled and ceased to exist as of the Effective Time, and no consideration was delivered in exchange for such OTM Option.

F4 · derivative.exercise_date: Pursuant to the terms of the Merger Agreement, effective as of 10 business days prior to the closing of the Merger (the "Acceleration Date"), each Issuer Option then outstanding and unexercised that had an exercise price per Share that was equal to or greater than the Upfront Cash Consideration (each, an "OTM Option"), became fully vested and exercisable up to and through the closing of regular trading on the Nasdaq Stock Market on the fifth business day following the Acceleration Date (the "Last Exercise Date"). OTM Options not exercised on or prior to the Last Exercise Date were cancelled and ceased to exist as of the Effective Time, and no consideration was delivered in exchange for such OTM Option.

F4 · derivative.expiration_date: Pursuant to the terms of the Merger Agreement, effective as of 10 business days prior to the closing of the Merger (the "Acceleration Date"), each Issuer Option then outstanding and unexercised that had an exercise price per Share that was equal to or greater than the Upfront Cash Consideration (each, an "OTM Option"), became fully vested and exercisable up to and through the closing of regular trading on the Nasdaq Stock Market on the fifth business day following the Acceleration Date (the "Last Exercise Date"). OTM Options not exercised on or prior to the Last Exercise Date were cancelled and ceased to exist as of the Effective Time, and no consideration was delivered in exchange for such OTM Option.

SEC source: 0001104659-26-001380 · tm261736-9_4seq1.xml · derivative · entry 4

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 4,500 shares

Expires not disclosed

F4 · price: Pursuant to the terms of the Merger Agreement, effective as of 10 business days prior to the closing of the Merger (the "Acceleration Date"), each Issuer Option then outstanding and unexercised that had an exercise price per Share that was equal to or greater than the Upfront Cash Consideration (each, an "OTM Option"), became fully vested and exercisable up to and through the closing of regular trading on the Nasdaq Stock Market on the fifth business day following the Acceleration Date (the "Last Exercise Date"). OTM Options not exercised on or prior to the Last Exercise Date were cancelled and ceased to exist as of the Effective Time, and no consideration was delivered in exchange for such OTM Option.

F4 · derivative.exercise_date: Pursuant to the terms of the Merger Agreement, effective as of 10 business days prior to the closing of the Merger (the "Acceleration Date"), each Issuer Option then outstanding and unexercised that had an exercise price per Share that was equal to or greater than the Upfront Cash Consideration (each, an "OTM Option"), became fully vested and exercisable up to and through the closing of regular trading on the Nasdaq Stock Market on the fifth business day following the Acceleration Date (the "Last Exercise Date"). OTM Options not exercised on or prior to the Last Exercise Date were cancelled and ceased to exist as of the Effective Time, and no consideration was delivered in exchange for such OTM Option.

F4 · derivative.expiration_date: Pursuant to the terms of the Merger Agreement, effective as of 10 business days prior to the closing of the Merger (the "Acceleration Date"), each Issuer Option then outstanding and unexercised that had an exercise price per Share that was equal to or greater than the Upfront Cash Consideration (each, an "OTM Option"), became fully vested and exercisable up to and through the closing of regular trading on the Nasdaq Stock Market on the fifth business day following the Acceleration Date (the "Last Exercise Date"). OTM Options not exercised on or prior to the Last Exercise Date were cancelled and ceased to exist as of the Effective Time, and no consideration was delivered in exchange for such OTM Option.

SEC source: 0001104659-26-001380 · tm261736-9_4seq1.xml · derivative · entry 3

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 6,702 shares

Expires not disclosed

F3 · price: Pursuant to the terms of the Merger Agreement, effective as of immediately prior to the Effective Time, each option to purchase shares of Common Stock ("Issuer Option") that was outstanding and unexercised as of immediately prior to the Effective Time and had an exercise price per Share that was less than the Upfront Cash Consideration (each, a "Cash-Out Option"), became fully vested and was automatically cancelled and converted into the right to receive, without interest and subject to deduction for any required tax withholding, (i) the Offer Price minus (ii) the exercise price payable per share of Common Stock underlying such Cash-Out Option.

F3 · derivative.exercise_date: Pursuant to the terms of the Merger Agreement, effective as of immediately prior to the Effective Time, each option to purchase shares of Common Stock ("Issuer Option") that was outstanding and unexercised as of immediately prior to the Effective Time and had an exercise price per Share that was less than the Upfront Cash Consideration (each, a "Cash-Out Option"), became fully vested and was automatically cancelled and converted into the right to receive, without interest and subject to deduction for any required tax withholding, (i) the Offer Price minus (ii) the exercise price payable per share of Common Stock underlying such Cash-Out Option.

F3 · derivative.expiration_date: Pursuant to the terms of the Merger Agreement, effective as of immediately prior to the Effective Time, each option to purchase shares of Common Stock ("Issuer Option") that was outstanding and unexercised as of immediately prior to the Effective Time and had an exercise price per Share that was less than the Upfront Cash Consideration (each, a "Cash-Out Option"), became fully vested and was automatically cancelled and converted into the right to receive, without interest and subject to deduction for any required tax withholding, (i) the Offer Price minus (ii) the exercise price payable per share of Common Stock underlying such Cash-Out Option.

SEC source: 0001104659-26-001380 · tm261736-9_4seq1.xml · derivative · entry 2

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,047 shares

Expires not disclosed

F3 · price: Pursuant to the terms of the Merger Agreement, effective as of immediately prior to the Effective Time, each option to purchase shares of Common Stock ("Issuer Option") that was outstanding and unexercised as of immediately prior to the Effective Time and had an exercise price per Share that was less than the Upfront Cash Consideration (each, a "Cash-Out Option"), became fully vested and was automatically cancelled and converted into the right to receive, without interest and subject to deduction for any required tax withholding, (i) the Offer Price minus (ii) the exercise price payable per share of Common Stock underlying such Cash-Out Option.

F3 · derivative.exercise_date: Pursuant to the terms of the Merger Agreement, effective as of immediately prior to the Effective Time, each option to purchase shares of Common Stock ("Issuer Option") that was outstanding and unexercised as of immediately prior to the Effective Time and had an exercise price per Share that was less than the Upfront Cash Consideration (each, a "Cash-Out Option"), became fully vested and was automatically cancelled and converted into the right to receive, without interest and subject to deduction for any required tax withholding, (i) the Offer Price minus (ii) the exercise price payable per share of Common Stock underlying such Cash-Out Option.

F3 · derivative.expiration_date: Pursuant to the terms of the Merger Agreement, effective as of immediately prior to the Effective Time, each option to purchase shares of Common Stock ("Issuer Option") that was outstanding and unexercised as of immediately prior to the Effective Time and had an exercise price per Share that was less than the Upfront Cash Consideration (each, a "Cash-Out Option"), became fully vested and was automatically cancelled and converted into the right to receive, without interest and subject to deduction for any required tax withholding, (i) the Offer Price minus (ii) the exercise price payable per share of Common Stock underlying such Cash-Out Option.

SEC source: 0001104659-26-001380 · tm261736-9_4seq1.xml · nonDerivative · entry 1

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · kind: Pursuant to the terms of that certain Agreement and Plan of Merger (the "Merger Agreement"), by and among the Issuer, Day One Biopharmaceuticals, Inc. ("Parent") and Parent's direct wholly-owned subsidiary, Emerald Merger Sub, Inc. ("Purchaser"), dated as of November 12, 2025, the shares (the "Shares") of common stock, par value $0.0001 per share, of the Issuer (the "Common Stock") that were tendered to Purchaser prior to the expiration time of the Offer were exchanged for: (i) $25.00 per Share, net to the stockholder in cash, without interest and less any applicable tax withholding (the "Upfront Cash Consideration"), plus (ii) one non-tradeable contingent value right per Share (each, a "CVR"),

F2 · kind: (continued from footnote 1) which represents the right to receive certain contingent milestone payments of up to an aggregate of $30.25 per CVR in cash, without interest and less any applicable tax withholding, upon the achievement of certain specified milestones in accordance with the terms and subject to the conditions of a contingent value rights agreement entered into by Parent and the rights agent (the Upfront Cash Consideration plus one CVR, collectively, the "Offer Price"). After completion of the tender offer, pursuant to the terms of the Merger Agreement, Purchaser merged with and into the Issuer, effective as of January 6, 2026 (the "Effective Time"), with the Issuer continuing as the surviving corporation and a wholly owned subsidiary of Parent.

F1 · price: Pursuant to the terms of that certain Agreement and Plan of Merger (the "Merger Agreement"), by and among the Issuer, Day One Biopharmaceuticals, Inc. ("Parent") and Parent's direct wholly-owned subsidiary, Emerald Merger Sub, Inc. ("Purchaser"), dated as of November 12, 2025, the shares (the "Shares") of common stock, par value $0.0001 per share, of the Issuer (the "Common Stock") that were tendered to Purchaser prior to the expiration time of the Offer were exchanged for: (i) $25.00 per Share, net to the stockholder in cash, without interest and less any applicable tax withholding (the "Upfront Cash Consideration"), plus (ii) one non-tradeable contingent value right per Share (each, a "CVR"),

F2 · price: (continued from footnote 1) which represents the right to receive certain contingent milestone payments of up to an aggregate of $30.25 per CVR in cash, without interest and less any applicable tax withholding, upon the achievement of certain specified milestones in accordance with the terms and subject to the conditions of a contingent value rights agreement entered into by Parent and the rights agent (the Upfront Cash Consideration plus one CVR, collectively, the "Offer Price"). After completion of the tender offer, pursuant to the terms of the Merger Agreement, Purchaser merged with and into the Issuer, effective as of January 6, 2026 (the "Effective Time"), with the Issuer continuing as the surviving corporation and a wholly owned subsidiary of Parent.

SEC source: 0001104659-25-004591 · tm253733-2_4seq1.xml · nonDerivative · entry 2

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 78,296

F2 · kind: Represents the sale of shares of common stock to satisfy the Reporting Person's tax withholding obligations in connection with the service-based vesting and settlement of the RSUs pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 10, 2023. The sale was effected through an automatic "sell to cover" transaction that did not represent a discretionary trade by the Reporting Person.

F3 · price: The price reported is a weighted average sales price. The shares were sold in multiple transactions at prices ranging from $0.56 to $0.58, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder 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 ranges set forth in this footnote.

SEC source: 0001104659-25-004180 · tm253581-4_4seq1.xml · nonDerivative · entry 2

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 70,892

F2 · kind: Represents the sale of shares of common stock to satisfy the Reporting Person's tax withholding obligations in connection with the service-based vesting and settlement of the RSUs pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 10, 2023. The sale was effected through an automatic "sell to cover" transaction that did not represent a discretionary trade by the Reporting Person.

SEC source: 0001104659-25-004591 · tm253733-2_4seq1.xml · derivative · entry 5

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 54,167

Underlying: Common Stock · 54,167 shares

Expires not disclosed

F4 · derivative.exercise_price: Each RSU represents the contingent right to receive one share of common stock of the Issuer.

F7 · derivative.exercise_date: The RSUs shall vest in equal annual installments over four years from the date of grant.

F7 · derivative.expiration_date: The RSUs shall vest in equal annual installments over four years from the date of grant.

SEC source: 0001104659-25-004591 · tm253733-2_4seq1.xml · derivative · entry 4

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 243,750

Underlying: Common Stock · 243,750 shares

Expires 2035-01-14

F6 · derivative.exercise_date: The option shall vest in equal quarterly installments over four years from the date of grant.

SEC source: 0001104659-25-004591 · tm253733-2_4seq1.xml · derivative · entry 3

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 37,500

Underlying: Common Stock · 12,500 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.

F4 · derivative.exercise_price: Each RSU represents the contingent right to receive one share of common stock of the Issuer.

F5 · derivative.exercise_date: 25% of the total number of RSUs granted vested on January 15, 2025, and the remainder shall vest thereafter in equal annual installments over the next three years.

F5 · derivative.expiration_date: 25% of the total number of RSUs granted vested on January 15, 2025, and the remainder shall vest thereafter in equal annual installments over the next three years.

SEC source: 0001104659-25-004591 · tm253733-2_4seq1.xml · nonDerivative · entry 1

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 83,392

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 · kind: Represents shares of common stock received upon vesting of a portion of the restricted stock units ("RSUs") awarded to the Reporting Person on January 15, 2024.

SEC source: 0001104659-25-003876 · tm253488-3_4seq1.xml · nonDerivative · entry 2

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 69,344

F2 · kind: Represents the sale of shares of common stock to satisfy the Reporting Person's tax withholding obligations in connection with the service-based vesting and settlement of the RSUs pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 10, 2023. The sale was effected through an automatic "sell to cover" transaction that did not represent a discretionary trade by the Reporting Person.

SEC source: 0001104659-25-004180 · tm253581-4_4seq1.xml · derivative · entry 3

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,500

Underlying: Common Stock · 2,500 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.

F3 · derivative.exercise_price: Each RSU represents the contingent right to receive one share of common stock of the Issuer.

F4 · derivative.exercise_date: 25% of the total number of RSUs granted vested on January 14, 2025, and the remainder shall vest on January 14, 2026.

F4 · derivative.expiration_date: 25% of the total number of RSUs granted vested on January 14, 2025, and the remainder shall vest on January 14, 2026.

SEC source: 0001104659-25-004180 · tm253581-4_4seq1.xml · nonDerivative · entry 1

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 71,844

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 · kind: Represents shares of common stock received upon vesting of a portion of the restricted stock units ("RSUs") awarded to the Reporting Person on January 14, 2022.

SEC source: 0001104659-25-003876 · tm253488-3_4seq1.xml · derivative · entry 3

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,917

Underlying: Common Stock · 8,958 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.

F3 · derivative.exercise_price: Each RSU represents the contingent right to receive one share of common stock of the Issuer.

F4 · derivative.exercise_date: 25% of the total number of RSUs granted vested on January 13, 2025, and the remainder shall vest thereafter in equal annual installments over the next two years.

F4 · derivative.expiration_date: 25% of the total number of RSUs granted vested on January 13, 2025, and the remainder shall vest thereafter in equal annual installments over the next two years.

SEC source: 0001104659-25-003876 · tm253488-3_4seq1.xml · nonDerivative · entry 1

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 72,674

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 · kind: Represents shares of common stock received upon vesting of a portion of the restricted stock units ("RSUs") awarded to the Reporting Person on January 13, 2023.

SEC source: 0001104659-24-106750 · tm2425739d4_4seq1.xml · nonDerivative · entry 3

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 63,716

F2 · kind: Represents the sale of shares of common stock to satisfy the Reporting Person's tax withholding obligations in connection with the service-based vesting and settlement of the RSUs pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 10, 2023. The sale was effected through an automatic "sell to cover" transaction that did not represent a discretionary trade by the Reporting Person.

F4 · price: The price reported is a weighted average sales price. The shares were sold in multiple transactions at prices ranging from $1.92 to $2.04, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder 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 ranges set forth in this footnote.

SEC source: 0001104659-24-106750 · tm2425739d4_4seq1.xml · nonDerivative · entry 2

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 69,314

F2 · kind: Represents the sale of shares of common stock to satisfy the Reporting Person's tax withholding obligations in connection with the service-based vesting and settlement of the RSUs pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 10, 2023. The sale was effected through an automatic "sell to cover" transaction that did not represent a discretionary trade by the Reporting Person.

F3 · price: The price reported is a weighted average sales price. The shares were sold in multiple transactions at prices ranging from $1.82 to $2.18, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder 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 ranges set forth in this footnote.

SEC source: 0001104659-24-106750 · tm2425739d4_4seq1.xml · derivative · entry 4

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 50,000 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.

F5 · derivative.exercise_price: Each RSU represents the contingent right to receive one share of common stock of the Issuer.

F6 · derivative.exercise_date: Fully vested as of October 1, 2024.

F6 · derivative.expiration_date: Fully vested as of October 1, 2024.

SEC source: 0001104659-24-106750 · tm2425739d4_4seq1.xml · nonDerivative · entry 1

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 77,403

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 · kind: Represents shares of common stock received upon vesting of the restricted stock units ("RSUs") awarded to the Reporting Person on September 5, 2023.

SEC source: 0001104659-24-004543 · tm243529-3_4seq1.xml · nonDerivative · entry 3

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 27,403

F3 · kind: Represents the sale of shares of common stock to satisfy the Reporting Person's tax withholding obligations in connection with the service-based vesting and settlement of the RSUs pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 10, 2023. The sale was effected through an automatic "sell to cover" transaction that did not represent a discretionary trade by the Reporting Person.

F4 · price: The price reported is a weighted average sales price. The shares were sold in multiple transactions at prices ranging from $2.70 to $2.71, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder 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 ranges set forth in this footnote.

SEC source: 0001104659-24-004543 · tm243529-3_4seq1.xml · derivative · entry 7

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 50,000

Underlying: Common Stock · 50,000 shares

Expires not disclosed

F5 · derivative.exercise_price: Each RSU represents the contingent right to receive one share of common stock of the Issuer.

F9 · derivative.exercise_date: The RSUs shall vest in equal annual installments over four years from the date of grant.

F9 · derivative.expiration_date: The RSUs shall vest in equal annual installments over four years from the date of grant.

SEC source: 0001104659-24-004543 · tm243529-3_4seq1.xml · derivative · entry 6

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 225,000

Underlying: Common Stock · 225,000 shares

Expires 2034-01-14

F8 · derivative.exercise_date: The option shall vest in equal quarterly installments over four years from the date of grant.

SEC source: 0001104659-24-004543 · tm243529-3_4seq1.xml · derivative · entry 5

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 5,000

Underlying: Common Stock · 2,500 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.

F5 · derivative.exercise_price: Each RSU represents the contingent right to receive one share of common stock of the Issuer.

F7 · derivative.exercise_date: 25% of the total number of RSUs granted vested on January 14, 2024, and the remainder shall vest thereafter in equal annual installments over the next two years.

F7 · derivative.expiration_date: 25% of the total number of RSUs granted vested on January 14, 2024, and the remainder shall vest thereafter in equal annual installments over the next two years.

SEC source: 0001104659-24-004543 · tm243529-3_4seq1.xml · nonDerivative · entry 2

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 31,784

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.

F2 · kind: Represents shares of common stock received upon vesting of a portion of the RSUs awarded to the Reporting Person on January 14, 2022.

SEC source: 0001104659-24-004543 · tm243529-3_4seq1.xml · derivative · entry 4

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 26,875

Underlying: Common Stock · 8,958 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.

F5 · derivative.exercise_price: Each RSU represents the contingent right to receive one share of common stock of the Issuer.

F6 · derivative.exercise_date: 25% of the total number of RSUs granted vested on January 13, 2024, and the remainder shall vest thereafter in equal annual installments over the next three years.

F6 · derivative.expiration_date: 25% of the total number of RSUs granted vested on January 13, 2024, and the remainder shall vest thereafter in equal annual installments over the next three years.

SEC source: 0001104659-24-004543 · tm243529-3_4seq1.xml · nonDerivative · entry 1

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 29,284

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 · kind: Represents shares of common stock received upon vesting of a portion of the restricted stock units ("RSUs") awarded to the Reporting Person on January 13, 2023.

SEC source: 0001104659-23-099022 · tm2325674-6_4seq1.xml · derivative · entry 1

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,000

Underlying: Common Stock · 50,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents the contingent right to receive one share of common stock of the Issuer.

F2 · derivative.exercise_date: The RSUs will vest on October 1, 2024, subject to the Reporting Person's continued service to the Issuer on such vesting date.

F2 · derivative.expiration_date: The RSUs will vest on October 1, 2024, subject to the Reporting Person's continued service to the Issuer on such vesting date.

SEC source: 0001104659-23-052984 · tm2314135-1_4seq1.xml · nonDerivative · entry 2

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 20,326

F2 · kind: Pursuant to automatic sell-to-cover instructions adopted by the Reporting Person on April 26, 2021, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes. The automatic sale instructions for the sell-to-cover were intended to comply with the requirements of Rule 10b5-1(c). The sale was not a discretionary trade by the Reporting Person.

SEC source: 0001104659-23-052984 · tm2314135-1_4seq1.xml · derivative · entry 3

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 13,250 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.

F3 · derivative.exercise_price: Each RSU represents the contingent right to receive one share of common stock of the Issuer.

F4 · derivative.exercise_date: The RSUs vested as to 50% of the shares on April 26, 2022 and as to 50% of the shares on April 26, 2023.

F4 · derivative.expiration_date: The RSUs vested as to 50% of the shares on April 26, 2022 and as to 50% of the shares on April 26, 2023.

SEC source: 0001104659-23-052984 · tm2314135-1_4seq1.xml · nonDerivative · entry 1

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 24,270

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 · kind: Represents shares of common stock received upon the vesting of a portion of the restricted stock units ("RSUs") awarded to the Reporting Person on April 26, 2021.

SEC source: 0001104659-23-004736 · tm233833-1_4seq1.xml · nonDerivative · entry 2

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,020

F2 · kind: Represents the sale of shares of common stock to satisfy the Reporting Person's tax withholding obligations in connection with the service-based vesting and settlement of the RSUs. These sales were mandated by the Issuer's election under its equity incentive plans to require the Reporting Person to sell a number of shares of common stock needed to satisfy her tax withholding obligations and does not represent a discretionary trade by the Reporting Person.

F3 · price: The price reported is a weighted average sales price. The shares were sold in multiple transactions at prices ranging from $5.74 to $5.78, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001104659-23-004736 · tm233833-1_4seq1.xml · derivative · entry 5

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,500

Underlying: Common Stock · 2,500 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.

F5 · derivative.exercise_price: Each RSU represents the contingent right to receive one share of common stock of the Issuer.

F7 · derivative.exercise_date: 25% of the total number of RSUs granted vested on January 14, 2023, and the remainder shall vest thereafter in equal annual installments over the next three years.

F7 · derivative.expiration_date: 25% of the total number of RSUs granted vested on January 14, 2023, and the remainder shall vest thereafter in equal annual installments over the next three years.

SEC source: 0001104659-23-004736 · tm233833-1_4seq1.xml · nonDerivative · entry 1

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,802

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 · kind: Represents shares of common stock received upon the vesting of a portion of the restricted stock units ("RSUs") awarded to the Reporting Person on January 14, 2022.

SEC source: 0001104659-23-004736 · tm233833-1_4seq1.xml · derivative · entry 4

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 35,833

Underlying: Common Stock · 35,833 shares

Expires not disclosed

F5 · derivative.exercise_price: Each RSU represents the contingent right to receive one share of common stock of the Issuer.

F6 · derivative.exercise_date: The RSUs shall vest in equal annual installments over four years from the date of grant.

F6 · derivative.expiration_date: The RSUs shall vest in equal annual installments over four years from the date of grant.

SEC source: 0001104659-23-004736 · tm233833-1_4seq1.xml · derivative · entry 3

Carvajal Alejandra · CIK 0001645755 · SVP, Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 161,250

Underlying: Common Stock · 161,250 shares

Expires 2033-01-12

F4 · derivative.exercise_date: The option shall vest in equal quarterly installments over four years from the date of grant.

SEC source: 0001104659-22-052419 · tm2213920-1_4seq1.xml · derivative · entry 3

Carvajal Alejandra · CIK 0001645755 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,250

Underlying: Common Stock · 13,250 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.

F3 · derivative.exercise_price: Each RSU represents the contingent right to receive one share of common stock of the Issuer.

F4 · derivative.exercise_date: The RSUs vested as to 50% of the shares on April 26, 2022 and will vest as to 50% of the shares on April 26, 2023, subject to the Reporting Person's continued service to the Issuer on such date.

F4 · derivative.expiration_date: The RSUs vested as to 50% of the shares on April 26, 2022 and will vest as to 50% of the shares on April 26, 2023, subject to the Reporting Person's continued service to the Issuer on such date.

SEC source: 0001104659-22-052419 · tm2213920-1_4seq1.xml · nonDerivative · entry 2

Carvajal Alejandra · CIK 0001645755 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,302

F2 · kind: Represents the sale of shares of common stock to satisfy the Reporting Person's tax withholding obligations in connection with the service-based vesting and settlement of the RSUs.

SEC source: 0001104659-22-052419 · tm2213920-1_4seq1.xml · nonDerivative · entry 1

Carvajal Alejandra · CIK 0001645755 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,250

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 · kind: Represents shares of common stock received upon the vesting of a portion of the restricted stock units ("RSUs") awarded to the Reporting Person on April 26, 2021.

SEC source: 0001104659-22-005540 · tm223926-1_4seq1.xml · derivative · entry 2

Carvajal Alejandra · CIK 0001645755 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Common Stock · 10,000 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 vesting.

F3 · derivative.exercise_date: The restricted stock units vest in equal annual installments over the first four years after the vesting commencement date, January 14, 2022.

F3 · derivative.expiration_date: The restricted stock units vest in equal annual installments over the first four years after the vesting commencement date, January 14, 2022.