Apellis Pharmaceuticals, Inc.·4

May 14, 7:31 PM ET

FONTEYNE PAUL R. 4

4 · Apellis Pharmaceuticals, Inc. · Filed May 14, 2026

Research Summary

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Apellis (APLS) Director Paul R. Fonteyne Disposes 167,580 Shares

What Happened

Paul R. Fonteyne, a director of Apellis Pharmaceuticals (APLS), disposed of a total of 167,580 shares on May 14, 2026 as part of the company’s merger with Biogen. Under the merger terms, each share was converted into $41.00 in cash plus one contingent value right (CVR). The cash component of these dispositions is roughly $6,870,780; the CVRs may entitle holders to up to $4.00 per share in additional contingent payments (up to ~$670,320 aggregate), subject to milestone achievement and withholding.

Many of the line items reported were dispositions to the issuer (D) and marked as derivative—reflecting cancellation/conversion of RSUs and vested options into the cash/CVR consideration under the Merger Agreement—rather than open-market sales.

Key Details

  • Transaction date: May 14, 2026. Report filed May 14, 2026 (appears timely).
  • Shares disposed: 167,580 total.
  • Cash consideration: $41.00 per share → approx. $6,870,780 total (before any withholding).
  • Contingent value rights: 1 CVR per share; CVRs provide up to $4.00 per share contingent payments.
  • Transaction types reported: change of control (U) and disposition to issuer (D); many entries labeled “Derivative” (converted RSUs/options).
  • Shares owned after transaction: not specified in this Form 4.
  • Tax/withholding: cash amounts are subject to applicable tax withholding per the Merger Agreement.

Context

These were merger-related cash-outs under the Agreement and Plan of Merger (Biogen → Apellis), not voluntary open-market sales—so they reflect deal consideration being paid and equity awards/options being converted/cashed out. The filing shows the conversion/cash-out mechanics: time-based RSUs and in-the-money options were converted into cash plus CVRs; options with exercise prices at or above specified thresholds were cancelled per the merger terms. This transaction is informational for investors but does not by itself indicate insider sentiment about the company’s standalone prospects.

Insider Transaction Report

Form 4Exit
Period: 2026-05-14
Transactions
  • Disposition from Tender

    Common Stock

    [F1][F2][F3]
    2026-05-1430,6660 total
  • Disposition to Issuer

    Common Stock

    [F4][F5]
    2026-05-143,0620 total
  • Disposition to Issuer

    Common Stock

    [F4][F5]
    2026-05-145,7440 total
  • Disposition to Issuer

    Common Stock

    [F4][F5]
    2026-05-147,9610 total
  • Disposition to Issuer

    Common Stock

    [F4][F5]
    2026-05-143,5440 total
  • Disposition to Issuer

    Common Stock

    [F4][F5]
    2026-05-143,8770 total
  • Disposition to Issuer

    Stock Option (right to buy)

    [F6]
    2026-05-1414,6840 total
    Exercise: $25.12Common Stock (14,684 underlying)
  • Disposition to Issuer

    Stock Option (right to buy)

    [F6]
    2026-05-1437,5000 total
    Exercise: $26.13Common Stock (37,500 underlying)
  • Disposition to Issuer

    Stock Option (right to buy)

    [F6]
    2026-05-1411,1990 total
    Exercise: $31.91Common Stock (11,199 underlying)
  • Disposition to Issuer

    Stock Option (right to buy)

    [F7]
    2026-05-148,5540 total
    Exercise: $47.28Common Stock (8,554 underlying)
  • Disposition to Issuer

    Stock Option (right to buy)

    [F7]
    2026-05-147,4410 total
    Exercise: $51.71Common Stock (7,441 underlying)
  • Disposition to Issuer

    Stock Option (right to buy)

    [F7]
    2026-05-1427,6000 total
    Exercise: $57.20Common Stock (27,600 underlying)
  • Disposition to Issuer

    Stock Option (right to buy)

    [F7]
    2026-05-145,7480 total
    Exercise: $59.86Common Stock (5,748 underlying)
Footnotes (7)
  • [F1]Pursuant to the terms of that certain Agreement and Plan of Merger (the "Merger Agreement"), by and among Apellis Pharmaceuticals, Inc. (the "Issuer"), Biogen Inc. ("Parent") and Parent's direct wholly-owned subsidiary, Aspen Purchaser Sub, Inc. ("Purchaser"), dated as of March 31, 2026, 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 tender offer were exchanged for: (i) $41.00 per share of Common Stock, net to the seller in cash, without interest and subject to reduction for any applicable tax withholding (the "Cash Amount"), plus (ii) one contractual, non-transferable contingent value right per share of Common Stock (each, a "CVR"),
  • [F2](continued from footnote 1) which entitles the holder to receive potential payments of up to an aggregate of $4.00 in cash, without interest and subject to reduction for any applicable tax withholding, upon the achievement of certain specified milestones in accordance with the terms and conditions of a contingent value rights agreement (the "CVR Agreement" and the Cash Amount plus one CVR, together, the "Offer Price"). After completion of the tender offer, pursuant to the terms of the Merger Agreement, Purchaser merged with and into the Issuer (the "Merger"), effective as of the filing and acceptance of the certificate of merger relating thereto on May 14, 2026 (the "Effective Time"), with the Issuer continuing as the surviving corporation (the "Surviving Corporation") and a wholly owned subsidiary of Parent. In the Merger, each share of Common Stock issued and outstanding immediately prior to the Effective Time, subject to certain exceptions,
  • [F3](continued from footnote 2) was automatically converted into the right to receive the Offer Price from Purchaser, without interest and subject to reduction for any applicable withholding taxes.
  • [F4]Pursuant to the terms of the Merger Agreement, effective as of immediately prior to the Effective Time, each Converted RSU Award that was subject solely to a time-based vesting schedule (including, for the avoidance of doubt, any Converted RSU Award for which the performance period of any applicable performance metric had already ended) was automatically cancelled and converted into the contingent right to receive (i) an amount of cash, without interest and less applicable tax withholding, equal to the product of (x) the total number of shares of Common Stock underlying such Converted RSU Award multiplied by (y) the Cash Amount and (ii) one CVR for each share of Common Stock underlying such Converted RSU Award.
  • [F5](continued from footnote 4) Subject to the holder's continued service through the vesting dates applicable to the Converted RSU Award under its terms as in effect immediately prior to the Effective Time, all payments in respect of such Converted RSU Award pursuant to the Merger Agreement will vest and become payable at the same time as the underlying Converted RSU Award would have vested and become settled pursuant to its terms and shall otherwise remain subject to the same terms and conditions (including any "double-trigger" vesting provisions applicable to the Converted RSU Award immediately prior to the Effective Time, as extended as provided by the Merger Agreement) as were applicable to the underlying RSU immediately prior to the Effective Time and the terms of the CVR Agreement.
  • [F6]Pursuant to the terms of the Merger Agreement, effective as of immediately prior to the Effective Time, each outstanding and unexercised option to purchase shares of Common Stock that was vested pursuant to its existing terms or that vested as a result of the transactions contemplated by the Merger Agreement (each, a "Cash-Out Option") and had an exercise price per share that was less than $41.00 (the Cash Amount) was automatically cancelled and converted into the right to receive (i) an amount of cash, without interest and less applicable tax withholding, equal to the product of (x) the total number of shares of Common Stock underlying such option, multiplied by (y) the excess of the Cash Amount over the exercise price per share of such option and (ii) one CVR for each share of Common Stock underlying such option.
  • [F7]Pursuant to the terms of the Merger Agreement, effective as of immediately prior to the Effective Time, each vested or unvested option with an exercise price per share that was equal to or greater than $45.00 (the Aggregate Amount) was cancelled without consideration and will have no further force or effect.
Signature
/s/ David Watson, attorney-in-fact for Paul Fonteyne|2026-05-14

Documents

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