SEC Form 4
TeraWulf Inc. (WULF) insider trading
In the 12 months to Oct 24, 2026, 4 WULF insiders reported open-market sales of $36.1M across 8 filings; one director bought $440.5K.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $36.1M
- 8 filings · 4 insiders
- Open-market purchases
- $440.5K
- 8 filings · Michael C. Bucella, Director
- Pre-arranged sales (10b5-1)
- 4 of 8
- $18.9M of $36.1M sold (52%)
Who traded WULF, and when
- Purchase
- Sale
- Sale, pre-arranged (10b5-1)
WULF daily close from Oct 24, 2025 to Oct 23, 2026, between $10.99 and $28.98, last $11.32. 8 sale and 8 purchase filings by 5 insiders, marked at their filing dates. Paul B. Prager, Chief Executive Officer: sold $23.4M across 5 filings, first filed Mar 25, 2026, last Aug 28, 2026. Patrick Fleury, Chief Financial Officer: sold $9.7M across 1 filing, first filed Mar 19, 2026, last Mar 19, 2026. Walter E. Carter, Director: sold $2.0M across 1 filing, first filed Sep 1, 2026, last Sep 1, 2026. Catherine J. Motz, Director: sold $997.9K across 1 filing, first filed Sep 9, 2026, last Sep 9, 2026. Michael C. Bucella, Director: bought $440.5K across 8 filings, first filed Dec 11, 2025, last Sep 16, 2026.
Largest mark · tap a row for others
Patrick Fleury · Chief Financial Officer
Sale $9,684,000
600,000 shares at $16.14 avg
Filed Mar 19, 2026 · traded Mar 17
Close on filing date $15.74
Paul B. Prager · Chief Executive Officer
Chief Executive Officer
$23.4M soldPatrick Fleury · Chief Financial Officer
Chief Financial Officer
$9.7M soldWalter E. Carter · Director
Director
$2.0M soldCatherine J. Motz · Director
Director
$997.9K soldMichael C. Bucella · Director
Director
$440.5K boughtHas TeraWulf Inc.'s CEO sold stock?
Yes. Paul B. Prager (CEO) sold 1,100,000 shares ($23.4M) between Mar 2026 and Aug 2026, $18.9M of it under a pre-arranged 10b5-1 plan.
Open-market trades
16 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Paul B. Prager | Chief Executive Officer | $23.4M | — | 5 | 81% of sales | |
| Patrick Fleury | Chief Financial Officer | $9.7M | — | 1 | — | |
| Walter E. Carter | Director | $2.0M | — | 1 | — | |
| Catherine J. Motz | Director | $997.9K | — | 1 | — | |
| Michael C. Bucella | Director | — | $440.5K | 8 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Michael C. Bucella Director | Purchase | 6,085 | $14.79 | $90.0K | 350,789 | |
traded | Catherine J. Motz Director | Sale | 56,023 | $17.81 | $997.9K | 153,218 | |
traded | Walter E. Carter Director | Sale | 130,626 | $15.14 | $2.0M | 229,090 | |
traded | Paul B. Prager Chief Executive Officer | SalePre-arranged (10b5-1) | 137,500 | $17.06 | $2.3M | 3,807,552 | |
traded | Michael C. Bucella Director | Purchase | 5,883 | $16.99 | $99.9K | 344,704 | |
traded | Paul B. Prager Chief Executive Officer | SalePre-arranged (10b5-1) | 137,500 | $26.60 | $3.7M | 3,945,052 | |
traded | Paul B. Prager Chief Executive Officer | SalePre-arranged (10b5-1) | 333,300 | $25.17 | $8.4M | 4,082,552 | |
traded | Paul B. Prager Chief Executive Officer | Sale | 216,700 | $20.73 | $4.5M | 884,420 | |
traded | Paul B. Prager Chief Executive Officer | SalePre-arranged (10b5-1) | 275,000 | $16.53 | $4.5M | 220,500 | |
traded | Michael C. Bucella Director | Purchase | 1,665 | $15.04 | $25.0K | 280,052 | |
traded | Patrick Fleury Chief Financial Officer | Sale | 600,000 | $16.14 | $9.7M | Multiple accounts | |
traded | Michael C. Bucella Director | Purchase | 4,835 | $15.57 | $75.3K | 278,387 | |
traded | Michael C. Bucella Director | Purchase | 1,338 | $14.91 | $19.9K | 273,552 | |
traded | Michael C. Bucella Director | Purchase | 2,085 | $14.42 | $30.1K | 272,214 | |
traded | Michael C. Bucella Director | Purchase | 3,171 | $15.78 | $50.0K | 270,129 | |
traded | Michael C. Bucella Director | Purchase | 4,178 | $12.01 | $50.2K | 266,958 |
GET /stocks/filings/vX/form-4?tickers=WULF&filing_date.gte=2025-10-24&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"WULF"
],
"issuer_cik": "0001083301",
"owner_cik": "0001915351",
"accession_number": "0001628280-26-062352",
"form_type": "4",
"filing_date": "2026-09-16",
"period_of_report": "2026-09-15",
"issuer_name": "TERAWULF INC.",
"issuer_trading_symbol": "WULF",
"owner_name": "Bucella Michael C.",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common stock, $0.001 par value per share",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-09-15",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 6085,
"transaction_price_per_share": 14.785,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 350789,
"transaction_value": 89966.725,
"not_subject_to_section_16": false,
"direct_or_indirect": "D"
},
{
"tickers": [
"WULF"
],
"issuer_cik": "0001083301",
"owner_cik": "0001877502",
"accession_number": "0001628280-26-061206",
"form_type": "4",
"filing_date": "2026-09-09",
"period_of_report": "2026-09-08",
"issuer_name": "TERAWULF INC.",
"issuer_trading_symbol": "WULF",
"owner_name": "Motz Catherine J.",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common stock, $0.001 par value per share",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-09-08",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 56023,
"transaction_price_per_share": 17.8131,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 153218,
"transaction_value": 997943.3012999999,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The Price reported in Column 4 is a weighted average price. The shares of common stock, par value $0.001 per share (\"Common Stock\"), of TeraWulf Inc. were sold in multiple transactions at a price ranging from $17.71 to $17.99, inclusive. The Reporting Person undertakes to provide to the staff of the Securities and Exchange Commission, to any security holder of TeraWulf Inc. or to TeraWulf Inc., upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth above."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 68 records
- Option exercises33 records
- Tax withholding (sold to cover)1 record
- Grants and awards11 records
- Gifts1 record
- Other22 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
Build this yourself
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for WULF every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.