Calumet, Inc. /DE_March 23, 2026

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 23, 2026

CALUMET, INC.

(Exact name of registrant as specified in its charter)

Delaware		001-42172		36-5098520
(State or other jurisdiction of incorporation)		(Commission File Number)		(IRS Employer Identification No.)

1060 N. Capital Avenue

Suite 6-401

Indianapolis, Indiana 46204

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code (317) 328-5660

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))

Securities Registered Pursuant to Section 12(b) of the Act:


Title of each class	Trading symbol(s)	Name of each exchange on which registered
Common Stock, par value $0.01 per share	CLMT	The Nasdaq Stock Market LLC

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. ☐

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On March 23, 2026, Jennifer G. Straumins notified the Board of Directors (the “Board”) of Calumet, Inc. (the “Company”) of her decision not to stand for re-election to the Board and to retire at the end of her term, which expires at the Company’s 2026 Annual Meeting of Stockholders. Her decision not to stand for re-election and to retire from the Board is not the result of any disagreement with the operations, policies or practices of the Company.

Item 7.01 Regulation FD Disclosure.

On March 25, 2026, the Company issued a press release announcing that Ms. Straumins will not stand for re-election to the Board as discussed above, a copy of which is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

In accordance with General Instruction B.2 of Form 8-K, the information contained in this Item 7.01, including Exhibit 99.1, shall not be deemed “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall such information and Exhibit 99.1 be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits



Exhibit No.		Exhibit Title or Description

99.1		Press release, dated March 25, 2026.
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.



	CALUMET, INC.


Date: March 25, 2026	By:	/s/ David Lunin
		Name: David Lunin
		Title: Executive Vice President and Chief Financial Officer