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 (Date of earliest event reported): February 17, 2026

INNOSPEC INC.

(Exact name of registrant as specified in its charter)

Commission File Number: 1-13879

Delaware

98-0181725

(State or other jurisdiction

of incorporation)

(IRS Employer

Identification No.)

8310 South Valley Highway, Suite 350

Englewood, Colorado, 80112

(Address of principal executive offices, including zip code)

(303)792-5554

(Registrant’s telephone number, including area code)

(Former name or former address, if changed since last report)

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:

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

☐ 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))

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 ☐

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


Title of each class	Trading Symbol(s)	Name of exchange on which registered

Common Stock	IOSP	NASDAQ

Item 2.02 Results of Operations and Financial Condition.

On February 17, 2026, Innospec Inc. (the “Company”) issued a press release announcing its financial results for the fiscal quarter and year ended December 31, 2025 (the “Press Release”).

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

EXHIBIT INDEX


Number	Description	Method of Filing

99.1	Press Release dated February 17, 2026 announcing Innospec Inc.’s financial results for the fiscal year ended December 31, 2025.	Filed Herewith

104	Cover Page Interactive Data File – the cover page XBRL tags are embedded within the Inline XBRL document.

SIGNATURES

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.

INNOSPEC INC.

Date: February 18, 2026

/s/ David B. Jones

David B. Jones

Senior Vice President, General Counsel and Chief Compliance Officer

INNOSPEC INC. 8-K