8-K

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): March 10, 2025

INNOSPEC INC.

(Exact name of registrant as specified in its charter)

Commission File Number: 1-13879

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:

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:

On March 10, 2025, the Board of Directors of Innospec Inc. (the “Company”) authorized the repurchase of up to $50 million in shares of the Company’s outstanding common stock over a three-year period commencing on March 10, 2025. The timing, manner, price and amount of any repurchases will be determined in the discretion of management, depending on market conditions and other factors. Repurchases may be made through open market purchases and accelerated share repurchases. The exact number of shares to be repurchased by the Company, if any, is not guaranteed. Depending on market conditions and other factors, these repurchases may be commenced or suspended at any time or periodically without prior notice.

A copy of the press release issued on March 10, 2025, to announce the repurchase authorization is furnished as Exhibit 99.1 to this report and is herein incorporated herein by reference into this Item 7.01.

(d) Exhibits.

EXHIBIT INDEX

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.

EX-99.1

Exhibit 99.1

PRESS RELEASE

INNOSPEC APPROVES NEW $50MM SHARE REPURCHASE PROGRAM

Englewood, CO, March 10, 2025 – Innospec **** Inc. **** (NASDAQ: IOSP) today announces that its Board of Directors has approved a new $50 million share repurchase program. The company’s prior $50 million share repurchase program expired in the first quarter of 2025.

Patrick S. Williams, President and Chief Executive Officer, said,

“With over $289 million in net cash, we continue to have significant flexibility and balance sheet strength for further M&A, organic investment, dividend growth and share repurchases under this renewed buyback program.”

Purchases may be made from time to time at management’s discretion.

About Innospec Inc.

Innospec Inc. is an international specialty chemicals company with approximately 2,450 employees in 22 countries. Innospec manufactures and supplies a wide range of specialty chemicals to markets in the Americas, Europe, the Middle East, Africa and Asia-Pacific. The Performance Chemicals business creates innovative technology-based solutions for our customers in the Personal Care, Home Care, Agrochemical, Mining and Industrial markets. The Fuel Specialties business specializes in manufacturing and supplying fuel additives that improve fuel efficiency, boost engine performance and reduce harmful emissions. Oilfield Services provides specialty chemicals to all elements of the oil and gas exploration and production industry.

Forward-Looking Statements

This press release contains certain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. All statements other than statements of historical facts included or incorporated herein may constitute forward-looking statements. Such forward-looking statements include statements (covered by words like “expects,” “estimates,” “anticipates,” “may,” “could,” “believes,” “feels,” “plans,” “intends,” “outlook” or similar words or expressions, for example) which relate to earnings, growth potential, operating performance, events or developments that we expect or anticipate will or may occur in the future. Although forward-looking statements are believed by management to be reasonable when made, they are subject to certain risks, uncertainties and assumptions, and our actual performance or results may differ materially from these forward-looking statements. Additional information regarding risks, uncertainties and assumptions relating to Innospec and affecting our business operations and prospects are described in Innospec’s

Annual Report on Form 10-K for the year ended December 31, 2024, Innospec’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2024 and other reports filed with the U.S. Securities and Exchange Commission. You are urged to review our discussion of risks and uncertainties that could cause actual results to differ from forward-looking statements under the heading “Risk Factors” in such reports. Innospec undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Contacts:

Corbin Barnes

Innospec Inc.

+44-151-355-3611

corbin.barnes@innospecinc.com