Mawer Stephen P

Director at Calumet Specialty Products Partners, L.P. · on record since Jun 1, 2026
Director at Calumet, Inc. /DE · on record since Jul 13, 2026
Executive Chairman at Calumet Specialty Products Partners, L.P. · on record since Feb 25, 2021
Chairman of the Board at Calumet Specialty Products Partners, L.P. · on record since Feb 23, 2023

Insider trading activity of Mawer Stephen P

Transactions on record: 122; since May 19, 2016

Open-market buys: 16; $440.8K

Open-market sells: 7; $395.9K

Companies traded: 2; last filing Sep 28, 2026

Figures computed from official regulatory filings — .

Companies where Mawer Stephen P has traded

Calumet, Inc. /DE39 tx · $127.2K · Sep 28, 2026
Calumet Specialty Products Partners, L.P.83 tx · $987.9K · Jan 22, 2024

Track record of Mawer Stephen P

Statistical track record

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Open-market buys: 16

Last buy: Nov 21, 2022

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Transaction history of Mawer Stephen P

Co-insiders of Mawer Stephen P

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Value · USD	Src
Calumet, Inc. /DEListing unverified	Sep 28, 2026	Sell	-24,555	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Sep 28, 2026	ExerciseD (derivative)	-61,387	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Sep 28, 2026	Exercise	61,387	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Aug 21, 2026	AwardD (derivative)	690	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Aug 21, 2026	AwardD (derivative)	230	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Jul 13, 2026	Exercise	13,780	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Jul 13, 2026	Other	-5,512	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Jul 13, 2026	ExerciseD (derivative)	-13,780	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Jun 4, 2026	AwardD (derivative)	6,092	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Jun 1, 2026	AwardD (derivative)	322	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Jun 1, 2026	AwardD (derivative)	968	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Mar 11, 2026	Other	-12,589	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Mar 11, 2026	Exercise	27,806	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Mar 11, 2026	ExerciseD (derivative)	-27,806	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Feb 26, 2026	AwardD (derivative)	391	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Feb 26, 2026	AwardD (derivative)	1,175	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Nov 10, 2025	AwardD (derivative)	1,761	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Nov 10, 2025	AwardD (derivative)	587	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Oct 3, 2025	Exercise	7,403	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Oct 3, 2025	ExerciseD (derivative)	-7,403	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Oct 3, 2025	Sell	-2,962	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Aug 7, 2025	AwardD (derivative)	738	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Aug 7, 2025	AwardD (derivative)	2,216	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Jun 13, 2025	AwardD (derivative)	13,780	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Jun 11, 2025	AwardD (derivative)	7,403	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC

Company	Filed	Type	Qty	Value · USD	Src
Calumet, Inc. /DEListing unverified	Sep 28, 2026	Sell	-24,555	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Sep 28, 2026	ExerciseD (derivative)	-61,387	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Sep 28, 2026	Exercise	61,387	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Aug 21, 2026	AwardD (derivative)	690	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Aug 21, 2026	AwardD (derivative)	230	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Jul 13, 2026	Exercise	13,780	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Jul 13, 2026	Other	-5,512	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Jul 13, 2026	ExerciseD (derivative)	-13,780	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Jun 4, 2026	AwardD (derivative)	6,092	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Jun 1, 2026	AwardD (derivative)	322	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Jun 1, 2026	AwardD (derivative)	968	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Mar 11, 2026	Other	-12,589	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Mar 11, 2026	Exercise	27,806	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Mar 11, 2026	ExerciseD (derivative)	-27,806	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Feb 26, 2026	AwardD (derivative)	391	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Feb 26, 2026	AwardD (derivative)	1,175	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Nov 10, 2025	AwardD (derivative)	1,761	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Nov 10, 2025	AwardD (derivative)	587	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Oct 3, 2025	Exercise	7,403	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Oct 3, 2025	ExerciseD (derivative)	-7,403	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Oct 3, 2025	Sell	-2,962	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Aug 7, 2025	AwardD (derivative)	738	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Aug 7, 2025	AwardD (derivative)	2,216	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Jun 13, 2025	AwardD (derivative)	13,780	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Calumet, Inc. /DEListing unverified	Jun 11, 2025	AwardD (derivative)	7,403	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC