Douglas Mellinger is the Lead Independent Director at Marathon Digital (since March 31, 2022) and chairs the Nominating and Corporate Governance Committee. He holds a B.S. in Entrepreneurial Science from Syracuse University and is age 61.
Mellinger has been a Managing Director at Clarion Capital Partners since 2013, a lower middle market private equity and structured credit asset management firm where he focuses on value creation across portfolio companies. Previously, he held senior positions at Palm Ventures and Zeno Ventures, providing strategic and operational expertise to high-growth businesses.
He founded enherent Corp, serving as Founder, Chairman and Chief Executive Officer, building a global software development and services firm that earned recognition on the Inc. 500 list and Deloitte's Technology Fast 500 and Fast 50 rankings. Mellinger is also co-founder of Foundation Source, the leading provider of outsourced services and technology for private foundations. He currently serves on the boards of IEC and Campden IPI, and has held directorships across numerous private and public companies, as well as advisory positions with government agencies, universities, and nonprofit organizations. He is a past leader within Young Entrepreneurs' Organization and Young Presidents' Organization.
Biography extracted from Marathon Digital DEF 14A filed 2026-04-30 View cached copy (2026-08-31)Live source ↗
Roles
Contiguous filings for the same role are collapsed into a single tenure span. Click a row to see the underlying filings.
| Company | Role | Tenure | Filings |
|---|---|---|---|
| Marathon Digital | Director | 2026-06 → present (3mo) | 1 |
Insider transactions
Totals for this person
| Bucket | Invested (shares) | Invested (USD) | Divested (shares) | Divested (USD) | Net direction | Txns | Invested @ last price | Divested @ last price |
|---|---|---|---|---|---|---|---|---|
| All time | - | $0 | 7,000 | $112.0K | ↓ Divested $112.0K | 1 | $0 | $79.2K |
| 2026 | - | $0 | 7,000 | $112.0K | ↓ Divested $112.0K | 1 | $0 | $79.2K |
| 2026-Q2 | - | $0 | 7,000 | $112.0K | ↓ Divested $112.0K | 1 | $0 | $79.2K |
Invested = shares acquired (buys, grants, option exercises) — insider adding to the position. Divested = shares reduced (sells, dispositions, tax-withholding) — cash flowing TO the insider. Net direction shows which side wins on dollar terms in each bucket. % of holder's stake not yet computed (pending Form 3/4 holdings ingest). See methodology. The two @ last price columns restate the same share counts at the most recent share price we read (close of 2026-09-04); they are a valuation, not a cash flow, and they move every day the market does.
All transactions
| Date | Company | Kind | Shares | Amount (USD) | Value @ last price |
|---|---|---|---|---|---|
| 2026-06-22 | Marathon Digital | Open-market sale | 7,000 | $112,000 | $79.2K |