Solstice Advanced Materials Inc.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

Form 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934

DATE OF REPORT –July 24, 2026

(Date of earliest event reported)

SOLSTICE ADVANCED MATERIALS INC.

(Exact name of Registrant as specified in its Charter)

Registrant’s telephone number, including area code:(973) 370-8188

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:

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-2 of 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.¨

On July 24, 2026, Solstice Advanced Materials Inc. (the “Company”), the consenting lenders, and JPMorgan Chase Bank, N.A., as administrative agent, entered into an amendment (the “Amendment”) to the existing credit agreement, dated October 29, 2025, between the Company, the guarantors named therein, the lenders and issuing banks party thereto, and JPMorgan Chase Bank, N.A., as administrative agent (as so amended, the “Credit Agreement”). The Amendment amends the terms of the credit facilities to allow, among other things, for the provision of $4.685 billion in bridge financing to the Company and certain other transactions in connection with that certain agreement and plan of merger, dated as of July 6, 2026, with, among others, Solar Merger Sub One Inc., a Delaware corporation and a wholly-owned subsidiary of the Company, Solar Merger Sub Two LLC, a Delaware limited liability company and a wholly-owned subsidiary of the Company, and Element Solutions Inc., a Delaware corporation.

The foregoing description of the Amendment does not purport to be complete and is subject to, and qualified in its entirety by, the full text of the Amendment, which is attached as Exhibit 10.1 to this Current Report on Form 8-K and incorporated by reference herein.

(d)Exhibits.

Schedules and/or exhibits have been omitted from this filing pursuant to Item 601(a)(5) of Regulation S-K. The Registrant agrees to furnish supplementally a copy of any omitted schedule or exhibit to the SEC upon request.

SIGNATURES

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