CureVac (CVAC) investors tender 195.3M shares as BioNTech plans delisting

Rhea-AI Filing Summary

BioNTech SE has effectively completed its exchange offer for CureVac N.V. shares. As of the expiration of the subsequent offering period at 12:01 a.m. New York City time on December 18, 2025, a total of 195,341,219 CureVac shares, representing approximately 86.75% of CureVac’s issued and outstanding capital, were validly tendered.

BioNTech expects to promptly pay for all CureVac shares tendered in the offer and then carry out a post-offer reorganization. After this reorganization, CureVac will no longer be publicly traded, its shares will be delisted from Nasdaq, and the shares will be deregistered under the Exchange Act, ending CureVac’s ongoing SEC reporting obligations.

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M&A and corporate actions analyst

BioNTech secures control of CureVac, with CureVac set to leave public markets.

BioNTech SE reports that 195,341,219 CureVac shares, about 86.75% of CureVac’s issued and outstanding capital, were validly tendered by the end of the subsequent offering period at 12:01 a.m. New York City time on December 18, 2025. This level of tenders gives BioNTech a strong controlling stake, enabling it to move ahead with its planned post-offer steps.

BioNTech states it expects to promptly pay for all CureVac shares validly tendered in the offer, then proceed to consummate a post-offer reorganization. The company indicates that, following this reorganization, CureVac shares will be delisted from Nasdaq and deregistered under the Exchange Act, which will end CureVac’s periodic reporting obligations.

For existing CureVac investors, this means the investment will transition from a standalone publicly traded company to ownership in the acquiring structure as outlined in the exchange offer. The timing described centers on the expiration of the subsequent offering period on December 18, 2025 and the expectation that post-offer steps and delisting will occur as promptly as practicable thereafter.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE TO

Tender Offer Statement under Section 14(d)(1) or 13(e)(1)

of the Securities Exchange Act of 1934

(Rule 14d-100)

(Amendment No. 4)

CureVac N.V.

(Name of Subject Company (Issuer))

BioNTech SE

(Name of Filing Person (Offeror))

Common Shares, €0.12 par value per share

(Title of Class of Securities)

N2451R105

(CUSIP Number of Class of Securities)

Prof. Ugur Sahin, M.D.

An der Goldgrube 12

D-55131 Mainz

Germany

Telephone: +49 6131-9084-0

(Name, address, and telephone number of person authorized to receive notices and communications on behalf of filing persons)

with copies to:

Paul Claydon Jack S. Bodner Matthew T. Gehl Charles A. Dobb Brian K. Rosenzweig Covington & Burling LLP 30 Hudson Yards New York, New York 10001-2170 Telephone: (212) 841-1000 Howard L. Ellin June S. Dipchand Stephan Hutter Holger Hofmeister Skadden, Arps, Slate, Meagher & Flom LLP One Manhattan West 395 Ninth Avenue New York, New York 10001 Telephone: (212) 735-3000

☐  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. 4 amends and supplements the Tender Offer Statement on Schedule TO filed by BioNTech SE, a European stock corporation (Societas Europaea, or SE) organized under the laws of Germany and the European Union (“BioNTech”), on October 21, 2025 (the “Schedule TO”). The Schedule TO relates to the offer by BioNTech to exchange American Depositary Shares, each representing one ordinary share, no par value, with a notional amount attributable to each ordinary share of €1, of BioNTech, for all of the outstanding ordinary shares, par value €0.12 per share, of CureVac N.V., a public limited liability company (naamloze vennootschap) incorporated under the laws of the Netherlands, upon the terms and subject to the conditions set forth in the Exchange Offer Prospectus and the related Letter of Transmittal, each as defined in the Schedule TO. The Exchange Offer Prospectus and Letter of Transmittal are incorporated by reference to Exhibit (a)(1)(A) and (a)(4) of the Schedule TO.

The information set forth in the Exchange Offer Prospectus, including all annexes thereto, is hereby expressly incorporated by reference in response to all of the items of the Schedule TO, and is supplemented by the information specifically provided herein.

Items 1, 4, and 11.

The Exchange Offer Prospectus and Items 1, 4, and 11 of the Schedule TO, to the extent such Items incorporate by reference the information contained in the Exchange Offer Prospectus referenced below, are hereby amended and supplemented as follows:

The information set forth in the sections of the Exchange Offer Prospectus entitled “Questions and Answers,” “Summary,” and “The Offer” are hereby amended and supplemented by inserting the following paragraphs at the end of the section:

“At 12:01 a.m. (New York City Time) on December 18, 2025, the subsequent offering period expired. The exchange agent advised BioNTech that, as of the expiration time of the subsequent offering period, a total of 195,341,219 CureVac shares, collectively representing approximately 86.75% of CureVac’s issued and outstanding capital, were validly tendered in the offer.

BioNTech expects to promptly pay for all CureVac shares validly tendered prior to the expiration time of the subsequent offering period.

The offer has concluded, and BioNTech expects to consummate the post-offer reorganization as promptly as practicable. Promptly following the completion of the post-offer reorganization, CureVac will no longer be a publicly traded company, the listing of the CureVac shares on Nasdaq will be terminated, and the CureVac shares will be deregistered under the Exchange Act, resulting in the cessation of CureVac’s reporting obligations with respect to the CureVac shares thereunder.”

Item 12. Exhibits.

Item 12 of the Schedule TO is hereby amended and supplemented by adding the following exhibits:

Exhibit No.		Description
(a)(5)(O)		Press Release issued by BioNTech SE, dated December 18, 2025 (incorporated by reference to Exhibit 99.1 to the Report on Form 6-K filed by BioNTech SE with the SEC on December 18, 2025).

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.

Dated: December 18, 2025
BioNTech SE
By:		/s/ Prof. Ugur Sahin, M.D.
		Name: Prof. Ugur Sahin, M.D.
		Title: Chief Executive Offer

FAQ

How many CureVac (CVAC) shares were tendered to BioNTech in the offer?

As of the expiration of the subsequent offering period at 12:01 a.m. New York City time on December 18, 2025, a total of 195,341,219 CureVac shares, representing approximately 86.75% of CureVac’s issued and outstanding capital, were validly tendered.

What happens next for CureVac (CVAC) after BioNTech’s exchange offer?

BioNTech expects to promptly pay for all CureVac shares validly tendered and then consummate a post-offer reorganization. After this, CureVac will no longer be publicly traded, its shares will be delisted from Nasdaq, and they will be deregistered under the Exchange Act.

Will CureVac (CVAC) remain listed on Nasdaq after the BioNTech offer?

No. The filing states that, following the completion of the post-offer reorganization, the listing of CureVac shares on Nasdaq will be terminated.

Will CureVac (CVAC) continue filing reports with the SEC?

No. After CureVac shares are deregistered under the Exchange Act, CureVac’s reporting obligations with respect to those shares will cease.

When did the subsequent offering period for the BioNTech–CureVac exchange offer end?

The subsequent offering period expired at 12:01 a.m. (New York City time) on December 18, 2025.

What form of consideration is BioNTech offering for CureVac (CVAC) shares?

BioNTech is offering to exchange American Depositary Shares, each representing one ordinary share of BioNTech, for CureVac ordinary shares, as described in the Exchange Offer Prospectus and related Letter of Transmittal.