WULF SEC Filing News — TeraWulf Inc.

Latest SEC filings for TeraWulf Inc. (WULF) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-10-05.

TeraWulf Inc., together with its subsidiaries, owns, develops, operates digital infrastructure in the United States. It also develops and operates bitcoin mining facilities for bitcoin mining and high-performance computing workloads, leveraging clean, cost-effective, and reliable energy. The company was founded in 2021 and is headquartered in Easton, Maryland.
Sector: Financial Services Industry: Capital Markets Market Cap: $6.0B
20
Total Filings
2
Bullish Classifications
4
Bearish Classifications
14
Insider Transactions
2
Material Events (8-K)
1
Periodic Reports
Rule-based classifications for WULF currently lean bearish. Of the 20 filing records displayed, 4 carry bearish classifications (such as insider sales or negative 8-K disclosures) versus 2 bullish. This does not necessarily signal fundamental deterioration — insiders sell for many reasons — but it is worth monitoring alongside the company's core financial metrics.
WULF Filing Activity Snapshot 2026-08-03 — 2026-10-05
Insider Transactions (Form 4)
2 buys vs 3 sells
Net insider selling in this period — insiders sell for many reasons beyond conviction.
Largest Form 144 Filing
$52.35M
Prager Paul B. · 2026-09-22
3,000,000 shares · Form 144
Form 144 Notices
3
Proposed insider sales filed — Form 144 is a notice of intent, not a confirmed transaction. Actual sales are confirmed via Form 4.
Insider Transactions 14 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 14 filings in this group are Form 4s for TeraWulf Inc.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 14 insider filings shown, the breakdown is 4 option exercise, 3 compensation award, 3 open-market sale, 2 other reported transaction and 2 open-market purchase. 5 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Option exercise ×4
The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.
Compensation award ×3
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Open-market sale ×3
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Other reported transaction ×2
The filing reports a transaction type that does not map to a routine purchase, sale, award or withholding.
Open-market purchase ×2
The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.
Form 4 Compensation award Tax / Compensation Filing 2026-10-02

WULF insider Form 4 filed for equity award, exercise, or tax withholding

Prager Lisa A. (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code Nature Shares Price Value
A Compensation award 1,690 — —
Filing: Form 4 (Insider Transaction) Insider: Prager Lisa A. (Director) Shares: 1,690
View on SEC EDGAR → Open Filing Document →
Form 4 Compensation award Tax / Compensation Filing 2026-10-02

WULF insider Form 4 filed for equity award, exercise, or tax withholding

Carter Walter E. (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code Nature Shares Price Value
A Compensation award 2,112 — —
Filing: Form 4 (Insider Transaction) Insider: Carter Walter E. (Director) Shares: 2,112
View on SEC EDGAR → Open Filing Document →
Form 4 Compensation award Tax / Compensation Filing 2026-10-02

WULF insider Form 4 filed for equity award, exercise, or tax withholding

Bucella Michael C. (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code Nature Shares Price Value
A Compensation award 1,690 — —
Filing: Form 4 (Insider Transaction) Insider: Bucella Michael C. (Director) Shares: 1,690
View on SEC EDGAR → Open Filing Document →
Form 4 Option exercise Tax / Compensation Filing 2026-09-29

WULF insider Form 4 filed for equity award, exercise, or tax withholding

Khan Nazar M. (Director, Chief Technology Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 666,667 — —
M Option exercise derivative · Restricted Stock Units 666,667 — —
Filing: Form 4 (Insider Transaction) Insider: Khan Nazar M. (Director, Chief Technology Officer) Shares: 666,667
View on SEC EDGAR → Open Filing Document →
Form 4 Other reported transaction Tax / Compensation Filing 2026-09-23

WULF insider Form 4 filed for equity award, exercise, or tax withholding

Prager Paul B. (Director, Chief Executive Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The filing reports a transaction type that does not map to a routine purchase, sale, award or withholding.

Transactions reported on this filing
Code Nature Shares Price Value
J Other transaction derivative · Forward sale contract (obligation to sell) 3,000,000 — —
Filing: Form 4 (Insider Transaction) Insider: Prager Paul B. (Director, Chief Executive Officer)
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market purchase Insider Buying 2026-09-16

WULF insider Bucella Michael C. (Director) bought 6,085 shares (~$90.0K)

Bucella Michael C., listed as Director at TERAWULF INC., reported an open-market purchase of 6,085 WULF shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.

The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Transactions reported on this filing
Code Nature Shares Price Value
P Open-market purchase 6,085 $14.79 $90.0K
Filing: Form 4 (Insider Transaction) Insider: Bucella Michael C. (Director) Shares: 6,085 Est. Value: $90.0K
View on SEC EDGAR → Open Filing Document →
Form 4 Other reported transaction Tax / Compensation Filing 2026-09-11

WULF insider Form 4 filed for equity award, exercise, or tax withholding

Khan Nazar M. (Director, Chief Technology Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The filing reports a transaction type that does not map to a routine purchase, sale, award or withholding.

Transactions reported on this filing
Code Nature Shares Price Value
J Other transaction derivative · Forward sale contract (obligation to sell) 350,000 — —
J Other transaction derivative · Forward sale contract (obligation to sell) 350,000 — —
Filing: Form 4 (Insider Transaction) Insider: Khan Nazar M. (Director, Chief Technology Officer)
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-09-09

WULF insider Motz Catherine J. (Director) sold 56,023 shares (~$997.9K)

Motz Catherine J., listed as Director at TERAWULF INC., reported an open-market sale of 56,023 WULF shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 56,023 $17.81 $997.9K
Filing: Form 4 (Insider Transaction) Insider: Motz Catherine J. (Director) Shares: 56,023 Est. Value: $997.9K
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-09-01

WULF insider Carter Walter E. (Director) sold 130,626 shares (~$1.98M)

Carter Walter E., listed as Director at TERAWULF INC., reported an open-market sale of 130,626 WULF shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 130,626 $15.14 $1.98M
Filing: Form 4 (Insider Transaction) Insider: Carter Walter E. (Director) Shares: 130,626 Est. Value: $1.98M
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-08-28

WULF insider Prager Paul B. (Director, Chief Executive Officer) sold 137,500 shares (~$2.35M)

Prager Paul B., listed as Director, Chief Executive Officer at TERAWULF INC., reported an open-market sale of 137,500 WULF shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 137,500 $17.06 $2.35M
Filing: Form 4 (Insider Transaction) Insider: Prager Paul B. (Director, Chief Executive Officer) Shares: 137,500 Est. Value: $2.35M
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market purchase Insider Buying 2026-08-17

WULF insider Bucella Michael C. (Director) bought 5,883 shares (~$99.9K)

Bucella Michael C., listed as Director at TERAWULF INC., reported an open-market purchase of 5,883 WULF shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.

The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Transactions reported on this filing
Code Nature Shares Price Value
P Open-market purchase 3,023 $16.54 $50.0K
P Open-market purchase 2,860 $17.47 $50.0K
Filing: Form 4 (Insider Transaction) Insider: Bucella Michael C. (Director) Shares: 5,883 Est. Value: $99.9K
View on SEC EDGAR → Open Filing Document →
Form 4 Option exercise Tax / Compensation Filing 2026-08-17

WULF insider Form 4 filed for equity award, exercise, or tax withholding

Tanimoto William Joseph (Chief Accounting Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 6,666 — —
M Option exercise derivative · Restricted Stock Units 6,666 — —
Filing: Form 4 (Insider Transaction) Insider: Tanimoto William Joseph (Chief Accounting Officer) Shares: 6,666
View on SEC EDGAR → Open Filing Document →
Form 4 Option exercise Tax / Compensation Filing 2026-08-03

WULF insider Form 4 filed for equity award, exercise, or tax withholding

Langlais Kerri M. (Director, Chief Strategy Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 500,000 — —
D Disposition to issuer 276,500 — —
M Option exercise derivative · Restricted Stock Units 500,000 — —
Filing: Form 4 (Insider Transaction) Insider: Langlais Kerri M. (Director, Chief Strategy Officer) Shares: 776,500
View on SEC EDGAR → Open Filing Document →
Form 4 Option exercise Tax / Compensation Filing 2026-08-03

WULF insider Form 4 filed for equity award, exercise, or tax withholding

Fleury Patrick (Chief Financial Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 500,000 — —
M Option exercise derivative · Restricted Stock Units 500,000 — —
Filing: Form 4 (Insider Transaction) Insider: Fleury Patrick (Chief Financial Officer) Shares: 500,000
View on SEC EDGAR → Open Filing Document →
Proposed Insider Sales 3 · Form 144

A Form 144 is a notice of intent to sell restricted or control securities. It is not a record that anything was sold. TeraWulf Inc. has 3 such notices in this period.

The distinction matters because a Form 144 is frequently reported as though it were a completed insider sale. The filer may sell all of the shares covered, some of them, or none at all, and there is no obligation to update the notice either way. A sale that is actually executed by an officer or director shows up separately on a Form 4, which is the filing to check before treating a proposed sale as a real one.

Form 144 Large Proposed Insider Sale 2026-09-22

WULF Form 144 filed for proposed insider sale by Prager Paul B. (3,000,000 shares) ~$52.35M

Prager Paul B. filed a Form 144 with the SEC indicating intent to sell WULF (TERAWULF INC.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.

Filing: Form 144 (Proposed Sale Notice) Insider: Prager Paul B. Shares: 3,000,000 Est. Value: $52.35M
View on SEC EDGAR → Open Filing Document →
Form 144 Proposed Insider Sale 2026-09-08

WULF Form 144 filed for proposed insider sale by Motz Catherine J. (56,023 shares) ~$996.1K

Motz Catherine J. filed a Form 144 with the SEC indicating intent to sell WULF (TERAWULF INC.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Motz Catherine J. Shares: 56,023 Est. Value: $996.1K
View on SEC EDGAR → Open Filing Document →
Form 144 Proposed Insider Sale 2026-09-01

WULF Form 144 filed for proposed insider sale by Carter, Walter E. (130,626 shares) ~$1.98M

Carter, Walter E. filed a Form 144 with the SEC indicating intent to sell WULF (TERAWULF INC.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Carter, Walter E. Shares: 130,626 Est. Value: $1.98M
View on SEC EDGAR → Open Filing Document →
Material Events 2 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 2 in this period for TeraWulf Inc. Each 8-K names the item number it is filed under, and that number is the fastest way to tell a routine disclosure from a consequential one.

Item 2.02 is an earnings release, Item 5.02 is a change of directors or officers, and Item 1.01 or 2.01 covers a material agreement or a completed acquisition. Item 7.01 and Item 8.01 are the general-purpose disclosure items and carry no fixed meaning on their own.

Form 8-K Material Company Update 2026-10-05

WULF filed 8-K — material company event

TERAWULF INC. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)
View on SEC EDGAR → Open Filing Document →
Form 8-K Material Company Update 2026-08-05

WULF filed 8-K — material company event

TERAWULF INC. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)
View on SEC EDGAR → Open Filing Document →
Periodic Reports 1 · Forms 10-K and 10-Q

The periodic reports are where the audited and reviewed financial statements live. This period contains 1 quarterly report (10-Q) for TeraWulf Inc.

The two are not equivalent in weight. A 10-K is audited by an external firm and includes the full risk factor disclosure, business description and management discussion; a 10-Q is unaudited, reviewed rather than examined, and much shorter. When a figure in a quarterly report is later revised, the annual report is usually where the correction appears.

An amended report — 10-K/A or 10-Q/A — restates or corrects something in the original filing, and is worth reading against the version it replaces.

Form 10-Q Quarterly Report 2026-08-05

WULF filed Quarterly Report (10-Q)

TERAWULF INC. filed its quarterly report with the SEC. This report includes unaudited financial statements and management discussion for the quarter.

Filing: 10-Q (Quarterly Report)
View on SEC EDGAR → Open Filing Document →

How we classify TeraWulf Inc.'s filings

Straight from EDGAR

Each displayed record links to an original source document. StrongBuyAnalytics provides navigation and brief excerpts or summaries, not the filing itself. Parsing may omit context or contain errors, so read the original document in full.

Transaction codes, not guesswork

The nature shown on each insider filing comes from the transaction code the filer entered on the form itself — P for an open-market purchase, A for a compensation award, F for shares withheld to pay tax, M for an option exercise. Where one filing contains several codes, the transaction table lists them line by line.

Why the distinction matters

Insider activity is routinely summarised as buying or selling, which flattens together decisions that mean very different things. Shares withheld for tax on a vesting grant are an automatic administrative step; shares bought on the open market are someone committing their own money at the current price.

What this page does not tell you

A filing records what happened, not why. Form 4 does not always disclose whether a sale was executed under a pre-arranged Rule 10b5-1 plan, and no single filing is a basis for a decision on WULF. Read these alongside the fundamentals rather than in isolation.

Frequently Asked Questions — WULF SEC Filings

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Publisher, sources & limitations — September 15, 2026. StrongBuyAnalytics provides navigation and brief excerpts or summaries for educational use. Original filings remain at SEC EDGAR or other displayed source links; StrongBuyAnalytics does not author them. Filing dates are source dates, not publication dates for this page. Coverage can be delayed, incomplete, amended, or unavailable because of SEC/source availability, parsing, caching, or outages. Verify every material statement in the original filing.
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