Douglas Mellinger Biography and Net Worth

Director of Marathon Digital


Doug Mellinger is an active entrepreneur, philanthropist, impact investor, and board member, with extensive experience building and leading public and private companies in the technology and financial industries. Mellinger is a managing director at Clarion Capital Partners, a lower middle market private equity and structured credit asset management company. He currently serves on the board of directors of Foundation Source, a leading provider of outsourced services and technology for private foundations which he co-founded in 2000; the board of directors of Campden Wealth and IPI (Institute for Private Investors), the largest global membership organization for wealthy families and their family offices; and the board of directors of International Education Corporation (IEC), one of the nation’s largest career education colleges. Prior to Clarion Capital Partners, Mellinger was a partner at Palm Ventures and a managing partner at Zeno Ventures. He founded and served as the chairman and CEO of enherent Corp, a global software development and services company that was listed as an Inc. 500 company twice and was featured on Deloitte & Touche’s Technology Fast 500 and Fast 50 lists. Throughout his career, Mellinger has served on the boards of numerous companies and organizations, including Edgar Online, Sequest Technologies, Producteev, Schiller International, Young Entrepreneur’s Organization (YEO), and Young President’s Organization (YPO), among others. He has also served on several advisory boards and boards to government agencies, universities, and non-profit organizations over the past 40 years. Mellinger holds a degree in entrepreneurial science from Syracuse University.

What is Douglas K. Mellinger's net worth?

The estimated net worth of Douglas K. Mellinger is at least $2.12 million as of November 10th, 2025. Mr. Mellinger owns 170,859 shares of Marathon Digital stock worth more than $2,121,044 as of December 4th. This net worth evaluation does not reflect any other assets that Mr. Mellinger may own. Learn More about Douglas K. Mellinger's net worth.

How do I contact Douglas K. Mellinger?

The corporate mailing address for Mr. Mellinger and other Marathon Digital executives is 1180 North Town Center Drive Suite 100, LAS VEGAS NV, 89144. Marathon Digital can also be reached via phone at (702) 945-2773 and via email at [email protected]. Learn More on Douglas K. Mellinger's contact information.

Has Douglas K. Mellinger been buying or selling shares of Marathon Digital?

During the last quarter, Douglas K. Mellinger has sold $37,260.00 of Marathon Digital stock. Most recently, Douglas K. Mellinger sold 1,000 shares of the business's stock in a transaction on Monday, November 10th. The shares were sold at an average price of $16.55, for a transaction totalling $16,550.00. Following the completion of the sale, the director now directly owns 170,859 shares of the company's stock, valued at $2,827,716.45. Learn More on Douglas K. Mellinger's trading history.

Who are Marathon Digital's active insiders?

Marathon Digital's insider roster includes Kevin DeNuccio (Director), Salman Khan (CFO), Jay Leupp (Director), Vicki Mealer-Burke (Director), Douglas Mellinger (Director), Zabi Nowaid (General Counsel & Corporate Secretary), Merrick Okamoto (CEO), Said Ouissal (Director), Simeon Salzman (CFO), Ashu Swami (Director), Frederick Thiel (CEO & Exec. Chairman ), and Frederick Thiel (CEO & Executive Chairman). Learn More on Marathon Digital's active insiders.

Are insiders buying or selling shares of Marathon Digital?

In the last twelve months, insiders at the business services provider sold shares 33 times. They sold a total of 677,840 shares worth more than $11,419,335.95. The most recent insider tranaction occured on November, 17th when CFO Salman Hassan Khan sold 34,732 shares worth more than $416,436.68. Insiders at Marathon Digital own 0.8% of the company. Learn More about insider trades at Marathon Digital.

Information on this page was last updated on 11/17/2025.

Douglas K. Mellinger Insider Trading History at Marathon Digital

Transaction DateBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
11/10/2025Sell1,000$16.55$16,550.00170,859View SEC Filing Icon  
10/7/2025Sell1,000$20.71$20,710.00171,859View SEC Filing Icon  
9/10/2025Sell1,000$16.10$16,100.00172,859View SEC Filing Icon  
8/7/2025Sell1,000$16.21$16,210.00173,859View SEC Filing Icon  
7/7/2025Sell1,000$17.42$17,420.00174,859View SEC Filing Icon  
6/6/2025Sell1,000$16.00$16,000.00175,859View SEC Filing Icon  
5/9/2025Sell3,000$16.00$48,000.00176,859View SEC Filing Icon  
1/13/2025Sell1,000$17.00$17,000.00137,756View SEC Filing Icon  
12/12/2024Sell1,000$23.80$23,800.00138,756View SEC Filing Icon  
11/12/2024Sell1,000$24.06$24,060.00139,756View SEC Filing Icon  
10/14/2024Sell1,000$16.77$16,770.00140,756View SEC Filing Icon  
9/12/2024Sell1,000$16.00$16,000.00141,756View SEC Filing Icon  
8/12/2024Sell1,000$16.05$16,050.00142,756View SEC Filing Icon  
12/28/2022Buy10,000$3.27$32,700.0028,771View SEC Filing Icon  
12/19/2022Buy10,000$3.84$38,400.0018,771View SEC Filing Icon  
See Full Table

Douglas K. Mellinger Buying and Selling Activity at Marathon Digital

This chart shows Douglas K Mellinger's buying and selling at Marathon Digital by year and by quarter.

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Marathon Digital Company Overview

Marathon Digital logo
MARA Holdings, Inc. operates as a digital asset technology company that mines digital assets with a focus on the bitcoin ecosystem in United States. The company was formerly known as Marathon Digital Holdings, Inc. and changed its name to MARA Holdings, Inc. in August 2024. MARA Holdings, Inc. was incorporated in 2010 and is headquartered in Fort Lauderdale, Florida.
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Today's Range

Now: $12.44
Low: $12.12
High: $12.59

50 Day Range

MA: $16.37
Low: $10.07
High: $22.84

2 Week Range

Now: $12.44
Low: $9.71
High: $28.07

Volume

32,303,358 shs

Average Volume

45,129,532 shs

Market Capitalization

$4.70 billion

P/E Ratio

6.91

Dividend Yield

N/A

Beta

5.42