Reporting owner · CIK 0001567383
Thiel Frederick G
Visual SEC Form 4 history across 1 companies, 11 transactions and 10 filings.
CEOChief Executive OfficerMARA Holdings, Inc.
Open-market mix
0%buys
Open-market buy performance
90-day forward return on this insider's open-market purchases
Forward return is not available yet
We compute this from each buy's stock performance 90 days after the transaction. The price history is still being populated for this insider's their open-market buys, so the average and median will appear here once the daily price refresh has covered the relevant trading days.
Monthly open-market activity
Reported purchase and sale transaction counts
Buys Sells
Net value flow
Buys minus sells
Jan 25
−$495.4K
Feb 25
−$458.8K
Jan 26
$0
Feb 26
$0
Apr 26
$0
Aug 26
−$253.3K
Sep 26
−$314.9K
Transaction texture
Ownership and ticket size
Average P/S size$380.6K
Median P/S size$386.9K
Direct11
Indirect0
Sep 17, 2026sale
Filing-only signals
Deterministic matches in this insider's history
Latest Form 4 facts
Quick context from source filings
Latest buy
No open-market insider purchase is available.
Associated companies
Visual map of known reporting history
Latest insider transactions
Form 4 filings from available history. Click any column to sort; click it again to flip the order.
| ID | Ticker | Insider | Role | Type | Shares | Value | Code | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|
| #226223 | MARA | Thiel Frederick G | CEO | sale10b5-1 | 27.5k | -$31.4M | S | 09/18 | 09/17 |
| #12138 | MARA | Thiel Frederick G | CEO | sale10b5-1 | 27.5k | -$25.3M | S | 08/19 | 08/17 |
| #218772 | MARA | Thiel Frederick G | CEO | withholding | 36.2k | -$29.5M | F | 04/03 | 04/01 |
| #52703 | MARA | Thiel Frederick G | CEO | withholding | 67.7k | -$61.7M | F | 02/07 | 02/05 |
| #39308 | MARA | Thiel Frederick G | CEO | withholding | 40.4k | -$38.4M | F | 02/04 | 01/30 |
| #178193 | MARA | Thiel Frederick G | CEO | withholding | 27.3k | -$49.0M | F | 03/05/2025 | 02/28/2025 |
| #178192 | MARA | Thiel Frederick G | CEO | withholding | 40.3k | -$74.0M | F | 03/05/2025 | 02/28/2025 |
| #161021 | MARA | Thiel Frederick G | CEO | grant | 417k | $0 | A | 03/01/2025 | 02/28/2025 |
| #140656 | MARA | Thiel Frederick G | CEO | sale10b5-1 | 27.5k | -$45.8M | S | 02/20/2025 | 02/18/2025 |
| #77853 | MARA | Thiel Frederick G | CEO | withholding | 162k | -$317M | F | 02/06/2025 | 02/03/2025 |
Thiel Frederick G Insider Activity FAQ
SEC Form 4 context
Who is Thiel Frederick G?
Thiel Frederick G is a reporting owner in SEC Form 4 filings with reporting owner CIK 0001567383.
Which companies has Thiel Frederick G reported transactions for?
MARA Holdings, Inc.
When was Thiel Frederick G's latest insider buy?
No open-market insider purchase is available for this period.
When was Thiel Frederick G's latest insider sale?
sale at MARA Holdings, Inc. on Sep 17, 2026 valued at $314,932.
Where can I see the original SEC filings?
Each transaction row links directly to the source SEC filing so the reported Form 4 details can be reviewed.
Are performance metrics included?
This version does not calculate win rates, forward returns, benchmark-adjusted returns, or high-conviction scores.