GSK to Launch Tender Offer for Nuvalent

GSK plc announced a planned cash tender offer to acquire all issued and outstanding Class A and Class B common shares of Nuvalent, Inc. The parties entered into an Agreement and Plan of Merger dated June 9, 2026.

Rhea-AI Filing Summary

GSK plc announced a planned cash tender offer to acquire all issued and outstanding Class A and Class B common shares of Nuvalent, Inc. The parties entered into an Agreement and Plan of Merger dated June 9, 2026. The tender offer has not commenced; when it does, the offerors will file a Tender Offer Statement on Schedule TO and the company will file a Solicitation/Recommendation Statement on Schedule 14D-9. Tender offer materials will be made available to Nuvalent stockholders and posted on the SEC website and the parties' investor websites.

Insights

M&A Counsel

Planned acquisition announced; timing and closing remain conditional.

The filing states an Agreement and Plan of Merger dated June 9, 2026 that contemplates a cash tender offer for all issued Class A and Class B shares of Nuvalent. The announcement is a pre-commencement communication and expressly states the tender offer has not commenced.

Completion depends on customary closing conditions described in the filing, including stockholder tender thresholds and regulatory approvals. Subsequent filings (Schedule TO and Schedule 14D-9) will disclose detailed terms, conditions and any limitations.

Corporate Strategy Analyst

Acquirer signals intent; stockholder materials to follow.

The filing identifies GSK plc, GlaxoSmithKline LLC (Parent) and Harmony Row Acquisition Co. (Purchaser) as the offerors and reiterates that materials will be made available free via the SEC and company/investor websites. The announcement is informational and not a solicitation.

Investor impact depends on the tender offer price, timing and whether requisite shares are tendered; those specifics will appear in the formal Tender Offer Statement upon commencement.

Key Figures

Agreement date: June 9, 2026 CUSIP (Class A): 670703107 Share classes: 2 classes +2 more

5 metrics

Agreement date June 9, 2026 Agreement and Plan of Merger date

CUSIP (Class A) 670703107 Underwriting CUSIP for Class A common stock

Share classes 2 classes Class A common stock and Class B common stock

Par value $0.0001 per share Par value for Class A and Class B common stock

GSK contact phone +1 215-219-7521 Contact for notices and communications

Key Terms

Schedule TO, Solicitation/Recommendation Statement, tender offer, Agreement and Plan of Merger

4 terms

Schedule TO regulatory

"pre-commencement communication filed under cover of this Tender Offer Statement on Schedule TO"

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.

Solicitation/Recommendation Statement regulatory

"the Company will file with the SEC a solicitation/recommendation statement on Schedule 14D-9"

A solicitation/recommendation statement is a public message from a company, board member, shareholder or advisor that asks investors to take a specific action—such as voting a proxy, tendering shares, or accepting or rejecting an offer—and explains which choice the issuer recommends. It matters to investors because these statements aim to shape outcomes that affect ownership, control or value, and they are often subject to disclosure rules so readers can judge the source’s motives and reliability; think of it like a persuasive letter that also must show who wrote it and why.

tender offer financial

"planned cash tender offer for all of the issued and outstanding shares"

A tender offer is a proposal made by a person or company to buy shares from existing shareholders at a set price, usually higher than the current market value, within a specific time frame. It matters to investors because it can lead to a change in ownership or control of a company, and shareholders must decide whether to sell their shares at the offered price.

Agreement and Plan of Merger legal

"pursuant to an Agreement and Plan of Merger, dated as of June 9, 2026"

An Agreement and Plan of Merger is a formal document where two companies agree to combine into one, outlining how the process will happen. It’s like a step-by-step plan for merging, and it matters because it shows both sides have agreed on the details before the official transition takes place.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did GSK announce regarding Nuvalent (NUVL)?

GSK plc announced a planned cash tender offer to acquire all Nuvalent Class A and Class B shares. The parties signed an Agreement and Plan of Merger dated June 9, 2026, and formal tender offer materials will be filed on Schedule TO when the offer commences.

Has the tender offer for Nuvalent started?

No, the tender offer has not commenced. The filing is a pre-commencement communication; the offerors will file a Tender Offer Statement on Schedule TO and Nuvalent will file a Schedule 14D-9 when the offer begins.

Where can Nuvalent stockholders obtain tender offer documents?

Documents will be available free on the SEC website and the parties' investor sites. The Tender Offer Statement and Solicitation/Recommendation Statement will be posted at www.sec.gov and on GSK and Nuvalent investor relations web pages.

What conditions were highlighted for the proposed transaction?

The filing references customary closing conditions. These include stockholder tender thresholds, required regulatory approvals and other conditions; the Schedule TO and Schedule 14D-9 will disclose specific closing conditions and any qualifications.

Do forward-looking statements appear in the filing?

Yes, the filing contains forward-looking statements subject to risks and uncertainties. It cites factors in GSK's Form 20-F and warns that timing, regulatory approvals and tender results could affect completion and anticipated benefits.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/09/2026 - 05:20 PM Learn about SEC filing dates

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

NUVALENT, INC.

(Name of Subject Company)

HARMONY ROW ACQUISITION CO.,

GLAXOSMITHKLINE LLC

and

GSK PLC

(Name of Filing Persons (Offerors))

Class A Common Stock, par value $0.0001 per share

Class B Common Stock, par value $0.0001 per share

(Title of Class of Securities)

670703107

(CUSIP Number of Class of Securities (Underlying Class A Common Stock))

N/A

(CUSIP Number of Class of Securities (Underlying Class B Common Stock))

David Rea

GlaxoSmithKline LLC

1250 South Collegeville Road

Collegeville, PA 19426

+1 215-219-7521

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications on Behalf of Filing Persons)

Copy to:

William J. Chudd

Daniel Brass

Davis Polk & Wardwell LLP

450 Lexington Avenue

New York, NY 10017

Telephone: +1 (212) 450-4000

Calculation of Filing Fee

Transaction Valuation		Amount of Filing Fee
N/A		N/A

☐  Check the box if any part of the fee is offset as provided by Rule 0-11(a)(2) and identify the filing with which the offsetting fee was previously paid. Identify the previous filing by registration statement number, or the Form or Schedule and date of its filing.

Amount Previously Paid: N/A		Filing Party: N/A
Form or Registration No.: N/A		Date Filed: N/A

☒  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: ☐

SCHEDULE TO

The pre-commencement communication filed under cover of this Tender Offer Statement on Schedule TO are being filed by GSK plc, a public limited company organized under the laws of England and Wales (“GSK plc”), pursuant to General Instruction D to Schedule TO relate to a planned cash tender offer for all of the issued and outstanding shares of Class A common stock, par value $0.0001 per share and Class B common stock, par value $0.0001 per share (collectively, the “Shares”), of Nuvalent, Inc., a Delaware corporation (the “Company”), pursuant to an Agreement and Plan of Merger, dated as of June 9, 2026, by and among GlaxoSmithKline LLC, a Delaware limited liability company and a wholly-owned subsidiary of GSK plc (“Parent”), Harmony Row Acquisition Co., a Delaware corporation and a wholly-owned subsidiary of Parent (“Purchaser”), the Company, and solely for purposes of Section 9.14 therein, GSK plc, a public limited company organized under the laws of England and Wales.

Additional Information

The tender offer for the Shares referenced in this announcement has not yet commenced. This announcement is for informational purposes only and is neither an offer to purchase nor a solicitation of an offer to sell Shares or any other securities, nor is it a substitute for the tender offer materials that GSK plc, Parent and Purchaser will file or cause to be filed with the Securities and Exchange Commission (the “SEC”) upon the commencement of the tender offer. At the time the tender offer is commenced, GSK plc, Parent and Purchaser will file or cause to be filed with the SEC a tender offer statement on Schedule TO (the “Tender Offer Statement”), and the Company will file with the SEC a solicitation/recommendation statement on Schedule 14D-9 (the “Solicitation/Recommendation Statement”), in each case, with respect to the tender offer. THE TENDER OFFER STATEMENT (INCLUDING AN OFFER TO PURCHASE, A RELATED LETTER OF TRANSMITTAL AND CERTAIN OTHER TENDER OFFER DOCUMENTS), AND THE SOLICITATION/RECOMMENDATION STATEMENT WILL CONTAIN IMPORTANT INFORMATION. STOCKHOLDERS OF THE COMPANY ARE URGED TO READ THESE DOCUMENTS CAREFULLY WHEN THEY BECOME AVAILABLE (AS EACH MAY BE AMENDED OR SUPPLEMENTED FROM TIME TO TIME) BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION THAT HOLDERS OF SHARES SHOULD CONSIDER BEFORE MAKING ANY DECISION WITH RESPECT TO THE TENDER OFFER. The tender offer for Shares will be made only pursuant to the Offer to Purchase, the Letter of Transmittal and related documents filed as a part of the Tender Offer Statement. The Tender Offer Statement (including the Offer to Purchase, the related Letter of Transmittal and certain other tender offer documents), as well as the Solicitation/Recommendation Statement, will be made available to all holders of Shares at no expense to them. The Tender Offer Statement and the Solicitation/Recommendation Statement will be made available for free at the SEC’s website at www.sec.gov. Copies of the documents filed by GSK plc, Parent and Purchaser with the SEC will also be available free of charge on GSK plc’s website at https://www.gsk.com/en-gb/investors or by contacting GSK plc’s investor relations department at gsk.investor.relations@gsk.com. Copies of the documents filed by the Company with the SEC will also be available free of charge on the Company’s investor relations website at https://investors.nuvalent.com/. In addition, stockholders of the Company may obtain free copies of the tender offer materials by contacting the information agent for the tender offer that will be named in the Tender Offer Statement.

Forward-looking Statements

GSK plc cautions investors that any forward-looking statements or projections made by GSK plc, including those made in this announcement, are subject to risks and uncertainties that may cause actual results to differ materially from those projected. Such factors include, but are not limited to, those described in the “Risk Factors” section in GSK plc’s Annual Report on Form 20-F for the year ended December 31, 2025. The pre-commencement communications filed under cover of this Tender Offer Statement on Schedule TO include forward-looking statements related to the Company, neladalkib, zidesamtinib and the acquisition of the Company by GSK plc, Parent and Purchaser that are subject to risks, uncertainties and other factors. All statements other than statements of historical fact are statements that could be deemed forward-looking statements, including all statements regarding the intent, belief or current expectation of the Company and members of its senior management team and can typically be identified by words such as “believe,” “expect,” “estimate,” “predict,” “target,” “potential,” “likely,” “continue,” “ongoing,” “could,” “should,” “intend,” “may,” “might,” “plan,” “seek,” “anticipate,” “project” and similar expressions, as well as variations or negatives of these words. Forward-looking statements include, without limitation, statements regarding the merger, similar transactions, prospective performance, future plans, events, expectations, performance, objectives and opportunities and the outlook for the Company’s business; the commercial success of the Company’s products; the anticipated timing of clinical data and regulatory filings or approvals relating to products; the possibility of favourable or unfavourable results from clinical trials; the anticipated benefits of the acquisition; filings and approvals relating to the transaction; the expected timing of the completion of the transaction; the parties’ ability to complete the transaction; and the accuracy of any assumptions underlying any of the foregoing. Investors are cautioned that any such forward-looking statements are not guarantees of future performance and involve risks and uncertainties and are cautioned not to place undue reliance on these forward-looking statements. Actual results may differ materially from those currently anticipated due to a number of risks and uncertainties. Risks and uncertainties that could cause the actual results to differ from expectations contemplated by forward-looking statements include: uncertainties as to the timing of the tender offer and completion of the merger; the possibility that various closing conditions for the transaction may not be satisfied or waived, including that the Company stockholders may not tender into the offer a majority of the Shares outstanding at the time of the expiration of the offer or that required regulatory approvals may not be obtained or are obtained subject to conditions that are not anticipated; the occurrence of any event, change or other circumstance that could give rise to the termination of the agreement and plan of merger; the failure to realize anticipated benefits of the proposed acquisition when expected or at all; potential adverse reactions or changes to business relationships resulting from the proposed acquisition, including the effect of the announcement, pendency or consummation of the acquisition on the ability of the Company to retain and hire key personnel or maintain key vendor, supplier or partner relationships; risks that the proposed acquisition disrupts the current plans and operations of the Company; transaction costs; risks associated with potential litigation or regulatory actions related to the transaction; and other risks and uncertainties described from time to time in documents filed with the SEC by the Company, including current reports on Form 8-K, quarterly reports on Form 10-Q and annual reports on Form 10-K, as well as the Solicitation/Recommendation Statement to be filed by the Company, or in GSK plc’s Annual Report on Form 20-F for the year ended December 31, 2025 filed with the SEC by GSK plc, as well as the Tender Offer Statement to be filed by GSK plc, Parent and Purchaser. All forward-looking statements are based on information currently available to GSK plc and the Company neither GSK plc nor the Company assumes any obligation to update any forward-looking statements.

***

Item 12.		Exhibits.
(a)(5)(a)		GSK plc investor call slides, dated June 9, 2026
(a)(5)(b)		Transcript of media call on June 9, 2026
(a)(5)(c)		Social media content by GSK plc on X
(a)(5)(d)		Social media content by GSK plc on LinkedIn
(a)(5)(e)		Social media content by GSK plc on Bluesky
(a)(5)(f)		Social media content by Tony Wood on LinkedIn
(a)(5)(g)		Social media content by Chris Sheldon on LinkedIn