Dere Willard H

SEC source: 0001193125-26-300920 · ownership.xml · derivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,500

Underlying: Common Stock · 6,500 shares

Expires 2036-07-07

F1 · derivative.exercise_date: The option vests and becomes exercisable on the earlier to occur of (i) July 8, 2027 or (ii) the day immediately prior to the first annual meeting of the Company's stockholders occurring after July 8, 2026.

SEC source: 0001193125-26-267255 · ownership.xml · derivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,000

Underlying: Common Stock · 21,000 shares

Expires 2036-06-08

F1 · derivative.exercise_date: The shares subject to this option shall vest and become exercisable upon the earlier of (i) the one-year anniversary of the Grant Date or (ii) the date of the Company's 2027 annual meeting of stockholders, subject to the Reporting Person's continued service with the Issuer on such vesting date.

SEC source: 0001628280-26-040911 · wk-form4_1780610668.xml · nonDerivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,440

F1 · price: Restricted stock units granted on June 2, 2026. Price not applicable.

SEC source: 0001104659-26-001382 · tm261736-10_4seq1.xml · derivative · entry 13

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,200 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: 0001104659-26-001382 · tm261736-10_4seq1.xml · derivative · entry 12

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 734 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: 0001104659-26-001382 · tm261736-10_4seq1.xml · derivative · entry 11

Dere Willard H · CIK 0001311569 · Director

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: 0001104659-26-001382 · tm261736-10_4seq1.xml · derivative · entry 10

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 513 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: 0001104659-26-001382 · tm261736-10_4seq1.xml · derivative · entry 9

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,002 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: 0001104659-26-001382 · tm261736-10_4seq1.xml · derivative · entry 8

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 125 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: 0001104659-26-001382 · tm261736-10_4seq1.xml · derivative · entry 7

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 368 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: 0001104659-26-001382 · tm261736-10_4seq1.xml · derivative · entry 6

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 450 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: 0001104659-26-001382 · tm261736-10_4seq1.xml · derivative · entry 5

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,000 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: 0001104659-26-001382 · tm261736-10_4seq1.xml · derivative · entry 4

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 544 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: 0001104659-26-001382 · tm261736-10_4seq1.xml · derivative · entry 3

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 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: 0001104659-26-001382 · tm261736-10_4seq1.xml · derivative · entry 2

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,460 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: 0001104659-26-001382 · tm261736-10_4seq1.xml · nonDerivative · entry 1

Dere Willard H · CIK 0001311569 · Director

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: 0001104659-25-059443 · tm2517941-7_4seq1.xml · derivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 61,500

Underlying: Common Stock · 61,500 shares

Expires 2035-06-11

F1 · derivative.exercise_date: The award will vest in full on the earlier of the first anniversary of the date of grant or the date of the 2026 Annual Meeting of Stockholders of the Issuer, subject to the Reporting Person's continuous service with the Issuer on such vesting date.

SEC source: 0000950170-25-085488 · ownership.xml · derivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,000

Underlying: Common Stock · 21,000 shares

Expires 2035-06-09

F1 · derivative.exercise_date: The shares subject to this option shall vest and become exercisable upon the earlier of (i) the one-year anniversary of the Grant Date or (ii) the date of the Company's 2026 annual meeting of stockholders, subject to the Reporting Person's continued service with the Issuer on such vesting date.

SEC source: 0001048477-25-000068 · wk-form4_1747947254.xml · nonDerivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,950

F1 · price: Restricted stock units granted on May 20, 2025. Price not applicable.

SEC source: 0000950170-25-053243 · ownership.xml · derivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 100,000

Underlying: Common Stock · 100,000 shares

Expires 2035-04-09

F1 · derivative.exercise_date: The option vests in full on the earlier of April 10, 2026 or the day immediately prior to the company's 2026 annual meeting of shareholders.

SEC source: 0001104659-24-070894 · tm2417031-2_4seq1.xml · derivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,000

Underlying: Common Stock · 55,000 shares

Expires 2034-06-10

F1 · derivative.exercise_date: The award will vest in full on the earlier of the first anniversary of the date of grant or the date of the 2025 Annual Meeting of Stockholders of the Issuer, subject to the Reporting Person's continuous service with the Issuer on such vesting date.

SEC source: 0001048477-24-000098 · wk-form4_1716499215.xml · nonDerivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,300

F1 · price: Restricted stock units granted on May 21, 2024. Price not applicable.

SEC source: 0000950170-24-042652 · ownership.xml · derivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 60,000 shares

Expires 2034-04-03

F1 · derivative.exercise_date: The option vests in full on the earlier of April 4, 2025 or the day immediately prior to the company's 2025 annual meeting of shareholders.

SEC source: 0000950170-24-041471 · ownership.xml · derivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 78,636

Underlying: Common Stock · 78,636 shares

Expires 2034-03-31

F1 · derivative.exercise_date: 33.33% of the shares subject to this option shall vest and become exercisable on April 1, 2025, with the remainder vesting in 24 equal monthly installments thereafter, subject to the Reporting Person's continued service with the Issuer on each such vesting date.

SEC source: 0001104659-24-001360 · tm241899-2_4seq1.xml · nonDerivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,182

F1 · shares: These shares were granted in connection with the Reporting Person's election to receive the Reporting Person's quarterly retainer for director services in the form of fully vested shares of stock rather than cash. The shares were granted to the Reporting Person pursuant to the Issuer's Amended & Restated Non-Employee Director Compensation Policy, as amended, in lieu of retainer fees of $13,875 for the quarter ended December 31, 2023. The number of shares issued was based on the closing price per share of the Issuer's common stock on January 2, 2024, which was $2.27.

SEC source: 0001104659-23-106841 · tm2327613d4_4seq1.xml · nonDerivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,070

F1 · shares: These shares were granted in connection with the Reporting Person's election to receive the Reporting Person's quarterly retainer for director services in the form of fully vested shares of stock rather than cash. The shares were granted to the Reporting Person pursuant to the Issuer's Amended & Restated Non-Employee Director Compensation Policy in lieu of retainer fees of $13,875 for the quarter ended September 30, 2023. The number of shares issued was based on the closing price per share of the Issuer's common stock on October 2, 2023, which was $1.26.

SEC source: 0001104659-23-078750 · tm2320657-2_4seq1.xml · nonDerivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,059

F1 · shares: These shares were granted in connection with the Reporting Person's election to receive the Reporting Person's quarterly retainer for director services in the form of fully vested shares of stock rather than cash. The shares were granted to the Reporting Person pursuant to the Issuer's Amended & Restated Non-Employee Director Compensation Policy in lieu of retainer fees of $13,875 for the quarter ended June 30, 2023. The number of shares issued was based on the closing price per share of the Issuer's common stock on June 30, 2023, which was $3.29.

SEC source: 0000899243-23-016395 · doc4.xml · derivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,000

Underlying: Common Stock · 35,000 shares

Expires 2033-06-21

F1 · derivative.exercise_date: The option will vest in full on the earlier of June 22, 2024 or the day immediately prior to the company's 2024 annual meeting of shareholders.

SEC source: 0001104659-23-070350 · tm2318463-1_4seq1.xml · derivative · entry 2

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,355

Underlying: Common Stock · 18,355 shares

Expires 2033-06-07

F2 · derivative.exercise_date: The award will vest in full on the earlier of the first anniversary of the date of grant or the date of the 2024 Annual Meeting of Stockholders of the Issuer, subject to the Reporting Person's continuous service with the Issuer on such vesting date.

SEC source: 0001104659-23-070350 · tm2318463-1_4seq1.xml · nonDerivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,842

F1 · shares: Represents a restricted stock unit ("RSU") award. Each RSU represents the contingent right to receive one share of Common Stock of the Issuer.

F2 · shares: The award will vest in full on the earlier of the first anniversary of the date of grant or the date of the 2024 Annual Meeting of Stockholders of the Issuer, subject to the Reporting Person's continuous service with the Issuer on such vesting date.

SEC source: 0001209191-23-031967 · doc4.xml · nonDerivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,580

F1 · price: Restricted stock units granted on May 23, 2023. Price not applicable.

SEC source: 0001104659-23-042238 · tm2311858-1_4seq1.xml · nonDerivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,375

F1 · shares: These shares were granted in connection with the Reporting Person's election to receive the Reporting Person's quarterly retainer for director services in the form of fully vested shares of stock rather than cash. The shares were granted to the Reporting Person pursuant to the Issuer's Amended & Restated Non-Employee Director Compensation Policy in lieu of retainer fees of $13,875 for the quarter ended March 31, 2023. The number of shares issued was based on the closing price per share of the Issuer's common stock on March 31, 2023, which was $4.11.

SEC source: 0000899243-22-028641 · doc4.xml · derivative · entry 3

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 10,000 shares

Expires 2032-01-14

F3 · price: Pursuant to the Merger Agreement, at the Effective Time, these options automatically vested and were cancelled, by virtue of the Merger and without any action on the part of the Reporting Person, and the Reporting Person was entitled to receive (without interest) (A) an amount in cash (less applicable Tax withholdings) equal to the product of (x) the total number of Shares subject to such option immediately prior to the effective time multiplied by (y) the excess, if any, of the Cash Consideration over the applicable exercise price per Share under such option, and (B) one CVR for each Share subject thereto.

F3 · derivative.exercise_date: Pursuant to the Merger Agreement, at the Effective Time, these options automatically vested and were cancelled, by virtue of the Merger and without any action on the part of the Reporting Person, and the Reporting Person was entitled to receive (without interest) (A) an amount in cash (less applicable Tax withholdings) equal to the product of (x) the total number of Shares subject to such option immediately prior to the effective time multiplied by (y) the excess, if any, of the Cash Consideration over the applicable exercise price per Share under such option, and (B) one CVR for each Share subject thereto.

SEC source: 0000899243-22-028641 · doc4.xml · nonDerivative · entry 2

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F2 · kind: Pursuant to the Merger Agreement, as of the Effective Time, these shares were converted into the right to receive the consideration per Share of (i) $10.00, payable to the holder thereof of cash, without interest but subject to reduction for any applicable withholding Taxes payable in respect thereof, and (ii) one CVR per share.

F2 · price: Pursuant to the Merger Agreement, as of the Effective Time, these shares were converted into the right to receive the consideration per Share of (i) $10.00, payable to the holder thereof of cash, without interest but subject to reduction for any applicable withholding Taxes payable in respect thereof, and (ii) one CVR per share.

SEC source: 0000899243-22-028641 · doc4.xml · nonDerivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,895

F1 · kind: Pursuant to the terms of the Merger Agreement and the Tender Offer Statement on Schedule TO filed by Ginger Merger Sub, Inc., these Shares were tendered and disposed of at the Acceptance Time in exchange for the right to receive the consideration per Share of (i) $10.00, payable to the holder thereof of cash, without interest but subject to reduction for any applicable withholding Taxes payable in respect thereof, and (ii) one CVR per share.

F1 · price: Pursuant to the terms of the Merger Agreement and the Tender Offer Statement on Schedule TO filed by Ginger Merger Sub, Inc., these Shares were tendered and disposed of at the Acceptance Time in exchange for the right to receive the consideration per Share of (i) $10.00, payable to the holder thereof of cash, without interest but subject to reduction for any applicable withholding Taxes payable in respect thereof, and (ii) one CVR per share.

SEC source: 0000899243-22-025513 · doc4.xml · nonDerivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,746

SEC source: 0000899243-22-023972 · doc4.xml · derivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 35,000

Underlying: Common Stock · 35,000 shares

Expires 2032-06-21

F1 · derivative.exercise_date: The option will vest in full on the earlier of June 22, 2023 or the day immediately prior to the company's 2023 annual meeting of shareholders.

SEC source: 0001104659-22-070143 · tm2218135-5_4seq1.xml · derivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,000

Underlying: Common Stock · 45,000 shares

Expires 2032-06-08

F1 · derivative.exercise_date: The option will vest in full on the earlier of the first anniversary of the date of grant or the date of the 2023 Annual Meeting of Stockholders of Mersana Therapeutics, Inc., subject to the Reporting Person's continued service on such vesting date.

SEC source: 0001567619-22-011788 · doc1.xml · nonDerivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,390

F1 · price: Restricted stock units granted on May 24, 2022. Price not applicable.

SEC source: 0001209191-22-004782 · doc4.xml · derivative · entry 2

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Common Stock · 10,000 shares

Expires 2032-01-14

F2 · derivative.exercise_date: This option vests in full on the first anniversary of the grant date, subject to continued service with RDUS through such date.

SEC source: 0001209191-22-004782 · doc4.xml · nonDerivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,195

F1 · price: The shares were acquired pursuant to a restricted stock unit award under the 2018 Stock Option and Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of RDUS common stock. The restricted stock units vest in full on the first anniversary of the award date, subject to continued service with RDUS through such date.

SEC source: 0001104659-22-001552 · tm221771-1_4seq1.xml · derivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,847

Underlying: Common Stock · 12,847 shares

Expires 2032-01-02

F1 · derivative.exercise_date: The option becomes exercisable in equal quarterly installments on the last day of each calendar quarter of 2022.

SEC source: 0000899243-21-024993 · doc4.xml · derivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,000

Underlying: Common Stock · 23,000 shares

Expires 2031-06-15

F1 · derivative.exercise_date: The option will vest in full on the earlier of June 16, 2022 or the day immediately prior to the company's 2022 annual meeting of shareholders.

SEC source: 0001104659-21-081609 · tm2119714-4_4seq1.xml · derivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,050

Underlying: Common Stock · 25,050 shares

Expires 2031-06-10

F1 · derivative.exercise_date: The option vests in full on the earlier of the first anniversary of the date of grant or the date of the 2022 Annual Meeting of Stockholders of Mersana Therapeutics, Inc.

SEC source: 0001567619-21-011288 · doc1.xml · nonDerivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,410

F1 · price: Restricted stock units granted on May 25, 2021. Price not applicable.

SEC source: 0001209191-21-013342 · doc4.xml · derivative · entry 2

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Common Stock · 10,000 shares

Expires 2031-02-22

F2 · derivative.exercise_date: This option vests in full on the first anniversary of the grant date, subject to continued service with RDUS through such date.

SEC source: 0001209191-21-013342 · doc4.xml · nonDerivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,695

F1 · price: The shares were acquired pursuant to a restricted stock unit award under the 2018 Stock Option and Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of RDUS common stock. The restricted stock units vest in full on the first anniversary of the award date, subject to continued service with RDUS through such date.

SEC source: 0001209191-21-005120 · doc4.xml · derivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,000

Underlying: Common Stock · 20,000 shares

Expires 2031-01-21

F1 · derivative.exercise_date: This option shall vest in full on the first anniversary of the grant date or upon an earlier Change of Control (as defined in the registrant's 2018 Stock Option and Incentive Plan).

SEC source: 0001104659-21-005942 · tm211948d2_4seq1.xml · derivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,141

Underlying: Common Stock · 3,141 shares

Expires 2031-01-15

F1 · derivative.exercise_date: The option becomes exercisable in equal quarterly installments on the last day of each calendar quarter of 2021.

SEC source: 0001567619-20-012684 · doc1.xml · nonDerivative · entry 1

Dere Willard H · CIK 0001311569 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,290

F1 · date: Trade made pursuant to a 10b5-1 plan executed on June 9, 2020.