Frederick G. Thiel
CEO at MARA Holdings Inc.
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.
MARA Holdings Inc.
Director · Chief Executive Officer
Chief executive roles
MARA Holdings Inc.
· CEO
Dates unknown
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 |
|---|---|---|---|---|---|
| Sep 17, 2026 | MARA Holdings Inc. | Open-market sale | −27,505 | $11.45 | $314,932 |
| Aug 17, 2026 | MARA Holdings Inc. | Open-market sale | −27,505 | $9.21 | $253,321 |
| Aug 3, 2026 | MARA Holdings Inc. | Shares withheld for tax | −27,316 | $11.75 | $320,963 |
| Jul 31, 2026 | MARA Holdings Inc. | Shares withheld for tax | −40,388 | $11.32 | $457,192 |
| Jul 30, 2026 | MARA Holdings Inc. | Shares withheld for tax | −40,497 | $11.82 | $478,675 |
| Jul 17, 2026 | MARA Holdings Inc. | Open-market sale | −27,505 | $10.90 | $299,805 |
| Jul 1, 2026 | MARA Holdings Inc. | Shares withheld for tax | −63,101 | $13.89 | $876,473 |
| Jun 17, 2026 | MARA Holdings Inc. | Open-market sale | −27,505 | $14.25 | $391,946 |
| May 18, 2026 | MARA Holdings Inc. | Shares withheld for tax | −27,316 | $11.46 | $313,041 |
| May 18, 2026 | MARA Holdings Inc. | Open-market sale | −27,505 | $12.00 | $330,060 |
| Apr 30, 2026 | MARA Holdings Inc. | Shares withheld for tax | −80,884 | $11.99 | $969,799 |
| Apr 17, 2026 | MARA Holdings Inc. | Open-market sale | −27,505 | $11.68 | $321,258 |
| Apr 1, 2026 | MARA Holdings Inc. | Shares withheld for tax | −36,230 | $8.16 | $295,637 |
| Mar 17, 2026 | MARA Holdings Inc. | Open-market sale | −27,505 | $9.18 | $252,496 |
| Feb 20, 2026 | MARA Holdings Inc. | Shares withheld for tax | −91,356 | $7.50 | $685,170 |
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