UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): December 19, 2019

MATCH GROUP, INC.

(Exact name of registrant as specified in its charter)

8750 North Central Expressway, Suite 1400

Dallas, TX 75231

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: (214) 576-9352

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

x Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

x Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 8.01. Other Events.

On December 19, 2019, Match Group, Inc., a Delaware corporation (“Match”), and IAC/InterActiveCorp, a Delaware corporation (“IAC”), issued a joint press release announcing the execution of a transaction agreement (the “Transaction Agreement”) by and among Match, IAC, IAC Holdings, Inc., a Delaware corporation and a direct wholly owned subsidiary of IAC, and Valentine Merger Sub LLC, a Delaware limited liability company and an indirect wholly owned subsidiary of IAC, pursuant to which Match and IAC will consummate a series of transactions in order to effect the separation of IAC and Match. A copy of the joint press release is attached as Exhibit 99.1 hereto and is incorporated herein by reference. Additional details regarding the terms of the Transaction Agreement will be filed with the Securities and Exchange Commission (the “SEC”) separately.

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NO OFFER OR SOLICITATION / ADDITIONAL INFORMATION AND WHERE TO FIND IT

This communication is for informational purposes only and does not constitute an offer to sell or the solicitation of an offer to buy any securities, or a solicitation of any vote or approval, nor shall there be any sale, issuance or transfer of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended.

This communication is being made in respect of a proposed transaction involving IAC, IAC Holdings, Inc. (“New IAC”) and Match. In connection with the proposed transaction, IAC, New IAC and Match intend to file relevant materials with the SEC, including a joint registration statement on Form S-4 to be filed by IAC and New IAC that will include a preliminary joint proxy statement of IAC and Match. The information in the preliminary joint proxy statement/prospectus will not be complete and may be changed. Each of IAC and Match will deliver the definitive joint proxy statement to their shareholders as required by applicable law. This communication is not a substitute for any proxy statement or any other document that may be filed with the SEC in connection with the proposed transaction.

INVESTORS AND SECURITY HOLDERS OF IAC AND MATCH ARE URGED TO READ THE DEFINITIVE JOINT PROXY STATEMENT/PROSPECTUS AND OTHER DOCUMENTS FILED WITH THE SEC CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION.

Investors and security holders will be able to obtain these materials (when they are available) and other documents filed with the SEC free of charge at the SEC’s website, www.sec.gov. Copies of documents filed with the SEC by IAC (when they become available) may be obtained free of charge on IAC’s website at www.iac.com. Copies of documents filed with the SEC by Match (when they become available) may also be obtained free of charge on Match’s website at www.mtch.com.

PARTICIPANTS IN THE SOLICITATION

IAC and Match and their respective directors and executive officers may be deemed to be participants in the solicitation of proxies from their respective shareholders in favor of the proposed transaction under the rules of the SEC. Information about IAC’s directors and executive officers is available in IAC’s Annual Report on Form 10-K for the year ended December 31, 2018, which was filed with the SEC on March 1, 2019, and IAC’s definitive proxy statement for its 2019 annual meeting of shareholders, which was filed with the SEC on April 30, 2019. Information about Match’s directors and executive officers is available in Match’s Annual Report on Form 10-K for the year ended December 31, 2018, which was filed with the SEC on February 28, 2019, and Match’s definitive proxy statement for its 2019 annual meeting of shareholders, which was filed with the SEC on April 30, 2019. Additional information regarding participants in the proxy solicitations and a description of their direct and indirect interests will be included in the proxy statement/prospectus and the other relevant documents filed with the SEC when they become available.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: December 19, 2019