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

Reporting relationship: Director
Issuer ticker: CLMT
Reported as of: 09 Jul 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 13 Jul 2026, 16:08:33 UTC
Prior SEC filing: 04 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Connor J. Egan, as attorney-in-fact

Key filing fact

Stephen P. Mawer filed Form 4 for Calumet, Inc. /DE (CLMT) on 13 Jul 2026.

Key facts

This page summarizes Stephen P. Mawer's Form 4 filing for Calumet, Inc. /DE (CLMT).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 13 Jul 2026, 16:08.

Change

Previous filing in this sequence was filed on 04 Jun 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001669531 Primary reporting owner

Mawer Stephen P

Relationship: Director
Address: 1060 N CAPITOL AVE, SUITE 6-401, INDIANAPOLIS
Signature: /s/ Connor J. Egan, as attorney-in-fact
Signature date: 10 Jul 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CLMT transaction

Common Stock, par value $0.01 per share

Options Exercise

Transaction value
Shares: +13,780
Change %: +4.5%
Price: $0.000000^*
Shares after: 317,090
Date: 09 Jul 2026
Ownership: Direct

CLMT transaction

Common Stock, par value $0.01 per share

Tax liability

Transaction value
Shares: -5,512
Change %: -1.7%
Price: $0.000000^*
Shares after: 311,578
Date: 09 Jul 2026
Ownership: Direct
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

CLMT transaction Derivative

Restricted Stock Unit

Options Exercise

Transaction value
Shares: -13,780
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 09 Jul 2026
Ownership: Direct
Underlying class: Common Stock, par value $0.01 per share
Underlying amount: 13,780
Exercise price
Footnotes: F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

The reporting person elected to surrender 5,512 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.

Footnote F2

Each Restricted Stock Unit is the economic equivalent of one share of Calumet, Inc. common stock, par value $0.01 per share.

Footnote F3

100% of the Restricted Stock Units vested on June 2, 2026.