Douglas K. Mellinger

Sits on 1 board. Last updated September 28, 2026

Time on boards

Boards served
1
Current seats
1
Board service
3 years
Director since
2023

3 years of board service in total across 1 board, counting each seat separately. Longest: MARA Holdings Inc., 3 years.

3 years ยท Since 2023

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Date Company Transaction Shares Price Value
Jun 22, 2026 MARA Holdings Inc. Open-market sale โˆ’7,000 $16.00 $112,000
Feb 13, 2026 MARA Holdings Inc. Grant or award +82,759 โ€” โ€”
Nov 10, 2025 MARA Holdings Inc. Open-market sale โˆ’1,000 $16.55 $16,550
Oct 7, 2025 MARA Holdings Inc. Open-market sale โˆ’1,000 $20.71 $20,710
Sep 10, 2025 MARA Holdings Inc. Open-market sale โˆ’1,000 $16.10 $16,100
Aug 7, 2025 MARA Holdings Inc. Open-market sale โˆ’1,000 $16.21 $16,210
Jul 7, 2025 MARA Holdings Inc. Open-market sale โˆ’1,000 $17.42 $17,420
Jun 6, 2025 MARA Holdings Inc. Open-market sale โˆ’1,000 $16.00 $16,000
May 9, 2025 MARA Holdings Inc. Open-market sale โˆ’3,000 $16.00 $48,000
Feb 28, 2025 MARA Holdings Inc. Grant or award +43,103 โ€” โ€”
Jan 13, 2025 MARA Holdings Inc. Open-market sale โˆ’1,000 $17.00 $17,000
Dec 12, 2024 MARA Holdings Inc. Open-market sale โˆ’1,000 $23.80 $23,800
Nov 12, 2024 MARA Holdings Inc. Open-market sale โˆ’1,000 $24.06 $24,060
Oct 14, 2024 MARA Holdings Inc. Open-market sale โˆ’1,000 $16.77 $16,770
Sep 12, 2024 MARA Holdings Inc. Open-market sale โˆ’1,000 $16.00 $16,000

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