8-K

CALUMET, INC.

Date: June 3, 2026

/s/ David Lunin

David Lunin

Executive Vice President and Chief Financial Officer

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): June 2, 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 5.07

Submission of Matters to a Vote of Security Holders.

On June 2, 2026, Calumet, Inc. (the “Company”) held its 2026 Annual Meeting of Stockholders (the “2026 Annual Meeting”). At the 2026 Annual Meeting, the Company’s stockholders voted on three proposals as described below.

Proposal No. 1 - Election of Class II Directors

The Company’s stockholders elected the three Class II director nominees listed below as directors of the Company, each to serve until the Company’s 2029 Annual Meeting of Stockholders and until their successors are duly elected and qualified. The voting results were as follows:


Nominees	For		Withhold		Broker Non-Votes
Todd Borgmann		51,089,604		365,403		19,926,638
Daniel J. Sajkowski		50,332,470		1,122,537		19,926,638
Bradford T. Sanders		51,130,433		324,574		19,926,638

Proposal No. 2 - Advisory Vote to Approve Executive Compensation

The Company’s stockholders approved, on a non-binding, advisory basis, the Company’s executive compensation. The voting results were as follows:


For:			50,222,235
Against:			956,685
Abstain:			276,087
Broker Non-Votes:			19,926,638

Proposal No. 3 - Ratification of the Selection of Independent Registered Public Accounting Firm

The Company’s stockholders ratified the selection of Grant Thornton LLP as the Company’s independent registered public accounting firm for the year ending December 31, 2026. The voting results were as follows:


For:			70,973,872
Against:			194,987
Abstain:			212,786

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.

SEC Form 8-K filed by Calumet Inc.