Douglas K. Mellinger is Director at MARATHON DIGITAL HOLDINGS, INC. (MARA). They have made 3 open-market trades across 1 company since 2022, most recently 2026-06-22.
CIK 0001066960
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
2 open-market purchases totalling $71K since 2022, against 1 sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| MARA | 231,618 | $1.7M |
Shares reported on the most recent Form 4, priced at the 2026-06-24 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| MARA | SELL · 10b5-1 | 2026-06-22 | 2026-06-24 | $16.00 | $112K | -16.5% | -15.9% | -5.6% |
| MARA | SELL · 10b5-1 | 2025-11-10 | 2025-11-12 | $16.55 | $17K | -21.3% | -19.2% | -46.2% |
| MARA | SELL · 10b5-1 | 2025-10-07 | 2025-10-08 | $20.71 | $21K | +2.0% | -21.9% | -49.3% |
| MARA | SELL · 10b5-1 | 2025-09-10 | 2025-09-11 | $16.10 | $16K | +11.8% | +27.8% | -24.7% |
| MARA | SELL · 10b5-1 | 2025-08-07 | 2025-08-08 | $16.21 | $16K | -2.8% | -4.4% | +0.4% |
| MARA | SELL · 10b5-1 | 2025-07-07 | 2025-07-09 | $17.42 | $17K | +1.9% | -16.8% | +9.6% |
| MARA | SELL · 10b5-1 | 2025-06-06 | 2025-06-10 | $16.00 | $16K | -14.4% | +14.7% | -8.2% |
| MARA | SELL · 10b5-1 | 2025-05-09 | 2025-05-13 | $16.00 | $48K | -9.9% | -3.2% | -4.2% |
| MARA | SELL · 10b5-1 | 2025-01-13 | 2025-01-15 | $17.00 | $17K | +1.1% | -6.4% | -30.4% |
| MARA | SELL · 10b5-1 | 2024-12-12 | 2024-12-16 | $23.80 | $24K | -27.4% | -28.5% | -48.9% |
| MARA | SELL · 10b5-1 | 2024-11-12 | 2024-11-13 | $24.06 | $24K | +17.5% | +1.1% | -28.7% |
| MARA | SELL · 10b5-1 | 2024-10-14 | 2024-10-16 | $16.77 | $17K | +5.4% | +17.3% | -3.4% |
| MARA | SELL · 10b5-1 | 2024-09-12 | 2024-09-16 | $16.00 | $16K | +7.9% | +11.4% | +51.3% |
| MARA | SELL · 10b5-1 | 2024-08-12 | 2024-08-14 | $16.05 | $16K | +22.1% | +6.1% | +66.0% |
| MARA | SELL | 2023-02-03 | 2024-01-02 | $7.25 | $73K | -8.3% | -10.1% | +4.5% |
| MARA | BUY | 2022-12-28 | 2022-12-30 | $3.27 | $33K | +96.4% | +100.3% | +118.7% |
| MARA | BUY | 2022-12-19 | 2022-12-22 | $3.84 | $38K | +6.0% | +144.0% | +111.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.