Stephen P. Mawer net worth and biography

Stephen Mawer Biography and Net Worth

Director of Calumet

Stephen P. Mawer has served as chair of the board of Calumet, Inc. since July 2024. Mr. Mawer previously served as the chairman of the board of Calumet GP, LLC (the “General Partner”) from January 2023 through July 2024 and served as a board member of the General Partner from March 2016 through July 2024. From May 2022 until December 2022, Mr. Mawer served in the role of Executive Chairman of the General Partner. From April 2020 until May 2022, Mr. Mawer served as the Chief Executive Officer of the General Partner. He retired as president of Koch Supply & Trading in 2014 following a 27-year career in commodities trading, risk management and refining operations. While at Koch, Mr. Mawer led global commodities trading and served as a senior member of the Koch Industries management team. Mr. Mawer holds Bachelor’s and Master’s degrees in chemical engineering from the University of Cambridge, England. Currently, he serves as a member of the Board of Directors at Zenith Energy Management and Howard Energy Partners, both of which are midstream company, as well as chairman of ClimeCo Corporation, an environmental commodities development and management company. He previously served as a member of the advisory board of Heritage Environmental Services.

Mr. Mawer brings extensive knowledge of petroleum markets, refining economics, supply/marketing optimization, sustainability and renewable fuels, and risk management.

What is Stephen P. Mawer's net worth?: The estimated net worth of Stephen P. Mawer is at least $5.52 million as of April 22nd, 2025. Mr. Mawer owns 283,652 shares of Calumet stock worth more than $5,517,031 as of December 4th. This net worth approximation does not reflect any other assets that Mr. Mawer may own. Learn More about Stephen P. Mawer's net worth.
How do I contact Stephen P. Mawer?: The corporate mailing address for Mr. Mawer and other Calumet executives is 2780 WATERFRONT PARKWAY EAST DRIVE SUITE 200, INDIANAPOLIS IN, 46214. Calumet can also be reached via phone at (317) 328-5660 and via email at [email protected]. Learn More on Stephen P. Mawer's contact information.
Has Stephen P. Mawer been buying or selling shares of Calumet?: Stephen P. Mawer has not been actively trading shares of Calumet in the last ninety days. Most recently, Stephen P. Mawer sold 3,655 shares of the business's stock in a transaction on Tuesday, April 22nd. The shares were sold at an average price of $9.29, for a transaction totalling $33,954.95. Following the completion of the sale, the director now directly owns 283,652 shares of the company's stock, valued at $2,635,127.08. Learn More on Stephen P. Mawer's trading history.
Who are Calumet's active insiders?: Calumet's insider roster includes David Lunin (CFO), Stephen Mawer (Director), Gregory Morical (SVP), Scott Obermeier (EVP), Jennifer Straumins (Director), and Ryan Willman (CAO). Learn More on Calumet's active insiders.
Are insiders buying or selling shares of Calumet?: During the last year, Calumet insiders bought shares 1 times. They purchased a total of 2,500 shares worth more than $32,625.00. During the last year, insiders at the oil and gas company sold shares 7 times. They sold a total of 320,294 shares worth more than $5,005,316.84. The most recent insider tranaction occured on June, 16th when SVP Gregory J Morical sold 25,123 shares worth more than $419,302.87. Insiders at Calumet own 4.1% of the company. Learn More about insider trades at Calumet.
Information on this page was last updated on 6/16/2025.

Stephen P. Mawer Insider Trading History at Calumet

Transaction Date	Buy/Sell	Number of Shares	Average Share Price	Total Transaction	Shares Held After Transaction
4/22/2025	Sell	3,655	$9.29	$33,954.95	283,652
3/24/2025	Sell	3,655	$12.88	$47,076.40	287,307
1/18/2024	Sell	15,037	$17.87	$268,711.19	172,610
11/21/2022	Buy	3,500	$16.27	$56,945.00	150,054
8/22/2022	Buy	5,000	$16.38	$81,900.00	146,554
8/16/2022	Buy	4,321	$16.17	$69,870.57	141,554
8/12/2022	Buy	9,251	$16.11	$149,033.61	137,233
8/12/2022	Buy	9,251	$16.11	$149,033.61	137,233
3/7/2017	Buy	3,600	$3.90	$14,040.00	29,037
11/9/2016	Buy	4,000	$3.65	$14,600.00	17,500
8/19/2016	Buy	2,500	$5.61	$14,025.00	13,500
5/18/2016	Buy	11,000	$3.68	$40,480.00	5,025

Stephen P. Mawer Buying and Selling Activity at Calumet

Calumet Company Overview

Calumet, Inc. engages in the manufacturing, formulating, and marketing of a diversified slate of specialty branded products and renewable fuels to customers across a broad range of consumer-facing and industrial markets. It operates through the following segments: Specialty Products & Solutions, Performance Brands, Montana/Renewables, and Corporate. The Specialty Products & Solutions segment consists of customer-focused solutions and formulations businesses, covering multiple specialty product lines, anchored by a unique integrated complex in Northwest Louisiana. The Performance Brands segment includes a fast-growing portfolio of high-quality, high performing brands. The Montana/Renewables segment is composed of a Great Falls specialty asphalt facility and Montana Renewables facility. The Corporate segment focuses on the general and administrative expenses not allocated to the Montana/Renewables, Specialty Products and Solutions, or Performance Brands segments. The company was founded in 1919 and is headquartered in Indianapolis, IN.

Today's Range

Now: $19.45

$19.42

$19.75

50 Day Range

MA: $18.98

$17.68

$20.11

2 Week Range

Now: $19.45

$7.68

$23.75

Volume

413,317 shs

Average Volume

735,469 shs

Market Capitalization

$1.69 billion

P/E Ratio

N/A

Dividend Yield

N/A

Beta

1.18