WULF insider buying and SEC filings, explained
Terawulf Inc. · CIK 1083301
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$441K
Insiders who bought
1
Sold (not marked 10b5-1)
$17.2M
Planned sales (10b5-1)
$18.9M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Sep 15, 2026 | Purchase (code P) | Michael C. Bucella (Director) bought 6,085 shares at $14.79 ($90K), reported as a purchase (code P). Holdings up 2% to 350,789 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 16, 2026 |
| Sep 8, 2026 | Sale | Catherine J. Motz (Director) sold 56,023 shares at about $17.81 ($998K). Holdings down 27% to 153,218 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Aug 31, 2026 | Sale | Walter E. Carter (Director) sold 130,626 shares at $15.14 ($2.0M). Holdings down 36% to 229,090 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 1, 2026 |
| Aug 27, 2026 | Planned (10b5-1) | Paul B. Prager (CEO and Director) sold 137,500 shares indirectly (by entity) at about $17.06 ($2.3M), marked as a 10b5-1 plan trade. Holdings by entity down 3% to 3,807,552 shares. | SEC filing Filed Aug 28, 2026 |
| Aug 14–17, 2026 | Purchase (code P) | Michael C. Bucella (Director) bought 5,883 shares between Aug 14 and Aug 17 at about $16.99 ($100K), reported as a purchase (code P). Holdings up 2% to 344,704 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 17, 2026 |
| Jun 29, 2026 | Planned (10b5-1) | Paul B. Prager (CEO and Director) sold 137,500 shares indirectly (by entity) at about $26.60 ($3.7M), marked as a 10b5-1 plan trade. Holdings by entity down 3% to 3,945,052 shares. | SEC filing Filed Jul 1, 2026 |
| May 26–27, 2026 | Planned (10b5-1) | Paul B. Prager (CEO and Director) sold 333,300 shares indirectly (by entity) between May 26 and May 27 at about $25.17 ($8.4M), marked as a 10b5-1 plan trade. Holdings by entity down 8% to 4,082,552 shares. | SEC filing Filed May 28, 2026 |
| Apr 27–28, 2026 | Sale | Paul B. Prager (CEO and Director) sold 216,700 shares between Apr 27 and Apr 28 at about $20.73 ($4.5M). Holdings down 20% to 884,320 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Apr 28, 2026 |
| Mar 24–25, 2026 | Planned (10b5-1) | Paul B. Prager (CEO and Director) sold 275,000 shares between Mar 24 and Mar 25 at about $16.53 ($4.5M), marked as a 10b5-1 plan trade. Holdings down 56% to 216,700 shares. | SEC filing Filed Mar 25, 2026 |
| Mar 20, 2026 | Purchase (code P) | Michael C. Bucella (Director) bought 1,665 shares at $15.04 ($25K), reported as a purchase (code P). Holdings up 1% to 280,052 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 20, 2026 |
| Mar 17–19, 2026 | Purchase (code P) | Michael C. Bucella (Director) bought 4,835 shares between Mar 17 and Mar 19 at about $15.57 ($75K), reported as a purchase (code P). Holdings up 2% to 278,387 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 19, 2026 |
| Mar 17, 2026 | Sale | Patrick Fleury (CFO) sold 600,000 shares directly and indirectly (by entity) at $16.14 ($9.7M). Direct holdings down 15% to 3,205,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 19, 2026 |
| Mar 11, 2026 | Purchase (code P) | Michael C. Bucella (Director) bought 1,338 shares at $14.91 ($20K), reported as a purchase (code P). Holdings up <1% to 273,552 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 13, 2026 |
| Mar 5–9, 2026 | Purchase (code P) | Michael C. Bucella (Director) bought 2,085 shares between Mar 5 and Mar 9 at about $14.42 ($30K), reported as a purchase (code P). Holdings up 1% to 272,214 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 9, 2026 |
| Mar 4, 2026 | Purchase (code P) | Michael C. Bucella (Director) bought 3,171 shares at $15.78 ($50K), reported as a purchase (code P). Holdings up 1% to 270,129 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 4, 2026 |
| Nov 13, 2025 | Purchase (code P) | Michael C. Bucella (Director) bought 4,178 shares at about $12.01 ($50K), reported as a purchase (code P). Holdings up 2% to 266,958 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 11, 2025 |
54 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
Follow WULF in the Insider Ledger app
Get the appA plain-English brief of insider purchases, 8-Ks and red flags at the companies you pick. No account needed.