CLMT 8-K: Q3 2025 results released via Exhibit 99.1

Rhea-AI Filing Summary

Calumet, Inc. (CLMT) furnished quarterly results under Item 2.02. On November 7, 2025, the company reported results for the quarter ended September 30, 2025 via a press release, which is included as Exhibit 99.1.

Consistent with General Instruction B.2, the information is furnished, not filed, and is not subject to Section 18 liabilities. It will not be incorporated by reference into other filings unless expressly stated.

8-K Event Classification

2 items: 2.02, 9.01

2 items

Item 2.02 Results of Operations and Financial Condition Financial

Disclosure of earnings results, typically an earnings press release or preliminary financials.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, and exhibit attachments filed with this report.

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Calumet, Inc. /DE0002013745false00020137452025-11-072025-11-07

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UNITED STATES SECURITIES AND EXCHANGE COMMISSION

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Washington, D.C. 20549

FORM 8-K

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CURRENT REPORT

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Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934

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Date of Report (Date of earliest event reported): November 7, 2025

CALUMET, INC.

(Exact name of registrant as specified in its charter)

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

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1060 N Capitol Ave

Suite 6-401

Indianapolis, Indiana 46204

(Address of principal executive offices) (Zip Code)

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

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

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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:

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☐ 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	​

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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).

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Emerging growth company ☐

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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. ☐

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Item 2.02 Results of Operations and Financial Condition.

On November 7, 2025, Calumet, Inc. reported results of operations for the quarter ended September 30, 2025, pursuant to a press release. A copy of the press release 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 report shall not be deemed “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 or otherwise subject to the liabilities of that section, nor shall such information and Exhibit be deemed incorporated by reference into any filing under the Securities Act of 1933 or the Securities Exchange Act of 1934, except as shall be expressly set forth by specific reference in such filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

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Exhibit No.		Description
99.1	​	Press release dated November 7, 2025.
104	​	Cover Page Interactive Data File- the cover page XBRL tags are embedded within the Inline XBRL document.

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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.

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​	CALUMET, INC.
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November 7, 2025	By:	/s/ David Lunin
​	​	Name: David Lunin
​	​	Title: Executive Vice President and Chief Financial Officer

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