Stephen P. Mawer - 09 Mar 2026 Form 4 Insider Report for Calumet, Inc. /DE (CLMT)

Role: Director
Signature: /s/ Connor J. Egan, as attorney-in-fact
Issuer symbol: CLMT
Transactions as of: 09 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 11 Mar 2026, 19:45:15 UTC
Previous filing: 26 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Mawer Stephen P	Director	1060 N CAPITOL AVE, SUITE 6-401, INDIANAPOLIS	/s/ Connor J. Egan, as attorney-in-fact	10 Mar 2026	0001669531

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CLMT	Common Stock, par value $0.01 per share	Options Exercise		+27,806	+9.7%	$0.000000^*	315,899	09 Mar 2026	Direct
transaction	CLMT	Common Stock, par value $0.01 per share	Tax liability		-12,589	-4%	$0.000000^*	303,310	09 Mar 2026	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	CLMT	Restricted Stock Unit	Options Exercise		-27,806	-100%	$0.000000^*	0	09 Mar 2026	Common Stock, par value $0.01 per share	27,806		Direct	F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The reporting person elected to surrender 12,589 shares of Calumet, Inc. common stock, par value $0.01 per share, to satisfy tax withholding liabilities upon delivery of common stock in accordance with Rule 16b-3.
F2	Each Restricted Stock Unit is the economic equivalent of one share of Calumet, Inc. common stock, par value $0.01 per share.
F3	100% of the Restricted Stock Units vested on February 21, 2026.