STOCK TITAN

Biogen (NASDAQ: APLS) clears HSR waiting period for $41 Apellis tender

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
SC TO-T/A

Rhea-AI Filing Summary

Biogen's subsidiary filed Amendment No. 2 to the Schedule TO to update the tender offer terms for all outstanding Apellis Pharmaceuticals common shares. The offer provides $41.00 per share in cash plus one contractual, non-transferable contingent value right (CVR) per share for up to $4.00 aggregate upon milestone achievement. This amendment states the Regulatory Condition was satisfied when the waiting period under the HSR Act expired at 11:59 p.m. Eastern Time on May 11, 2026, clearing a required antitrust review step. Signatures are dated May 12, 2026.

Positive

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Negative

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Insights

Regulatory clearance under HSR clears a key closing condition.

The amendment confirms the HSR Act waiting period expired at 11:59 p.m. on May 11, 2026, satisfying the stated Regulatory Condition for the tender offer and the related merger.

Completion now depends on any remaining offer conditions and the parties' actions; the filing ties the clearance explicitly to the Offer to Purchase and the CVR Agreement.

No voluntary hold agreement with DOJ/FTC was reported in this amendment.

The filing states there is no voluntary agreement with the FTC or Antitrust Division that would prevent consummation, indicating standard clearance under the HSR process rather than negotiated remedies.

Stakeholders should watch subsequent closing confirmations in the Offer to Purchase or related filings for timing and any last remaining conditions.

Cash consideration $41.00 per Share offer price stated in Offer to Purchase
Contingent Value Right (CVR) $4.00 aggregate per Share CVR payable upon specified milestones under CVR Agreement
HSR waiting period expiry 11:59 p.m. on May 11, 2026 expiration under the HSR Act that satisfied the Regulatory Condition
CUSIP 03753U106 Apellis common stock CUSIP on cover
Signature date May 12, 2026 dates signed by Biogen and Purchaser representatives
contingent value right (CVR) financial
"one contractual, non-transferable contingent value right per Share"
A contingent value right (CVR) is a short-term claim given to shareholders as part of a corporate deal that pays out only if specific future milestones or targets are met, such as regulatory approval or sales thresholds. Think of it like a coupon that becomes redeemable only if the company clears a stated hurdle; it matters to investors because it preserves potential upside from uncertain outcomes while also carrying extra risk and separate market value from the main stock.
HSR Act regulatory
"the waiting period under the HSR Act applicable to the Offer"
The HSR Act (Hart‑Scott‑Rodino Antitrust Improvements Act) requires companies in the United States to notify federal regulators and observe a waiting period before completing certain large mergers or acquisitions so authorities can check for anti-competitive effects. For investors it matters because the review can delay or block deals, force changes such as selling assets, and alter the expected value or timing of a transaction—like needing a permit before finalizing a major home renovation.
Schedule TO regulatory
"Tender Offer Statement on Schedule TO (as amended)"
A phrase indicating that a company plans or intends to hold an event, publish information, or take an action at a specified future time, but that the timing is not guaranteed and may change. For investors it signals an expected milestone—like an earnings call, product launch, or filing—so think of it as a calendar note rather than a firm promise; timing shifts can affect trading, expectations, and planning.
Offer to Purchase financial
"terms set forth in the Offer to Purchase dated April 14, 2026"
An offer to purchase is a formal proposal from one party to buy a specific amount of shares or assets from another party at a set price. It matters to investors because it signals interest in acquiring ownership and can influence the value or control of a company. Think of it as someone putting forward a clear, serious offer to buy something they find valuable.



UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

SCHEDULE TO

(Amendment No. 2)

Tender Offer Statement Pursuant to Section 14(d)(1) or 13(e)(1)
of the Securities Exchange Act of 1934


APELLIS PHARMACEUTICALS, INC.
(Name of Subject Company)

ASPEN PURCHASER SUB, INC.
(Offeror)
A Wholly Owned Subsidiary of

BIOGEN INC.
(Parent of Offeror)
(Names of Filing Persons (identifying status as offeror, issuer or other person))

COMMON STOCK, PAR VALUE $0.0001 PER SHARE
(Title of Class of Securities)

03753U106
(CUSIP Number of Class of Securities)

Wendell Taylor
Chief Corporation Counsel
Biogen Inc.
225 Binney Street
Cambridge, MA 02142
(617) 679-2000
(Name, address and telephone number of person authorized to receive notices and communications on behalf of filing persons)

with copies to:

Aaron M. Gruber
Bethany A. Pfalzgraf
Ryan J. Wichtowski
Cravath, Swaine & Moore LLP
Two Manhattan West
375 Ninth Avenue
New York, NY 10001
(212) 474-1000

Check the box if the filing relates solely to preliminary communications made before the commencement of a tender offer.

Check the appropriate boxes below to designate any transactions to which the statement relates:
 
third-party tender offer subject to Rule 14d-1.
 
issuer tender offer subject to Rule 13e-4.
 
going-private transaction subject to Rule 13e-3.
 
amendment to Schedule 13D under Rule 13d-2.

Check the following box if the filing is a final amendment reporting the results of the tender offer: 

If applicable, check the appropriate box(es) below to designate the appropriate rule provision(s) relied upon:

 
Rule 13e-4(i) (Cross-Border Issuer Tender Offer)
 
Rule 14d-1(d) (Cross-Border Third-Party Tender Offer)





This Amendment No. 2 (this “Amendment”) amends and supplements the Tender Offer Statement on Schedule TO (as amended and together with any subsequent amendments and supplements thereto, the “Schedule TO”), filed with the U.S. Securities and Exchange Commission (“SEC”) on April 14, 2026, by Biogen Inc., a Delaware corporation (“Biogen”). The Schedule TO relates to the tender offer by Aspen Purchaser Sub, Inc., a Delaware corporation and a wholly owned indirect subsidiary of Biogen (“Purchaser”), for all of the outstanding shares of common stock, par value $0.0001 per share (the “Shares”), of Apellis Pharmaceuticals, Inc., a Delaware corporation (“Apellis”), in exchange for (i) $41.00 per Share, net to the seller in cash, without interest and subject to reduction for any applicable tax withholding, plus (ii) one contractual, non-transferable contingent value right per Share representing the right to receive contingent cash 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 the CVR Agreement (as defined in the Offer to Purchase), in each case, upon the terms and subject to the conditions set forth in the Offer to Purchase dated April 14, 2026 (together with any amendments and supplements thereto, the “Offer to Purchase”) and in the related Letter of Transmittal, copies of which were filed as Exhibit (a)(1)(A) and Exhibit (a)(1)(B), respectively, to the Schedule TO.

Except to the extent specifically provided in this Amendment, the information set forth in the Schedule TO remains unchanged. This Amendment is being filed to reflect certain updates as reflected below. Capitalized terms used but not defined herein have the respective meanings ascribed to them in the Schedule TO.


Item 11.  Additional Information.

The Offer to Purchase and Item 11 of the Schedule TO, to the extent such Item incorporates by reference the information contained in the Offer to Purchase, are hereby amended and supplemented as follows:


1.
By adding the following new paragraph at the end of Section 15—“Conditions to the Offer” of the Offer to Purchase:

“The Regulatory Condition has been satisfied by the expiration at 11:59 p.m., Eastern Time, on May 11, 2026 of the waiting period under the HSR Act applicable to the Offer and the consummation of the Merger.”


2.
By adding the following sentence to the end of the second paragraph under the heading “United States Antitrust Compliance” in Section 16—“Certain Legal Matters; Regulatory Approvals” of the Offer to Purchase:

“The required waiting period under the HSR Act applicable to the Offer and the consummation of the Merger expired at 11:59 p.m., Eastern Time, on May 11, 2026, and there is no voluntary agreement between Biogen and Apellis, on the one hand, and the FTC or the Antitrust Division, on the other hand, pursuant to which the parties have agreed not to consummate the Offer or the Merger. Accordingly, the Regulatory Condition has been satisfied.”



SIGNATURES

After due inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

 
BIOGEN INC.
 
     
     
 
By
/s/ Robin Kramer  
   
Name:
Robin Kramer
 
   
Title:
Chief Financial Officer
 
   
Date:
May 12, 2026
 
     
 
ASPEN PURCHASER SUB, INC.
 
     
     
 
By
/s/ Michael Dambach
 
   
Name:
Michael Dambach
 
   
Title:
Authorized Signatory
 
   
Date:
May 12, 2026
 

FAQ

What price is Biogen offering for Apellis (APLS)?

Biogen's offer is $41.00 per share in cash plus a contractual CVR. The CVR may pay up to $4.00 in aggregate upon specified milestones under the CVR Agreement.

Has the regulatory condition for the Apellis tender offer been satisfied?

Yes. The amendment states the HSR Act waiting period expired at 11:59 p.m. Eastern Time on May 11, 2026, and the Regulatory Condition was satisfied.

Does the amendment mention any agreement with the FTC or Antitrust Division?

The filing states there is no voluntary agreement between Biogen/Apellis and the FTC or Antitrust Division that would prevent consummation of the offer or merger.

What are the next steps after this Amendment No. 2?

The amendment updates the Offer to Purchase to reflect HSR clearance; next steps include satisfying any remaining offer conditions and completing tender and merger procedures as set forth in the Offer to Purchase.

When were the amendments and signatures dated?

This Amendment No. 2 references the original Schedule TO filed April 14, 2026, and the signatures on the amendment are dated May 12, 2026.