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Nasdaq · CIK 0001083301

WULF TERAWULF INC.

Insider trading from SEC Form 4. Last filing 11 d ago. Close $13.77 on Oct 9, 2026, +25% from the 52-week low and -52% from the high.

TERAWULF INC. (WULF) has 92 SEC Form 4 filings on file from 9 insiders, the latest filed on Oct 2, 2026. In the last 90 days insiders made 1 open-market buy worth $90k and 2 open-market sells worth $3.0M, net -$2.9M.

15 open-market trades have been scored at WULF. The newest: Michael C. Bucella (director) bought $90k of stock on Sep 15, 2026, filed Sep 16, 2026, scored 24 (weak). The largest of the 15 shown: Patrick Fleury (Chief Financial Officer) sold $9.7M on Mar 17, 2026, scored 60 (notable). 2 insiders sold within 14 days of each other around Sep 8, 2026.

WULF closed at $13.77 on Oct 9, 2026, 25% above its 52-week low and 52% below its 52-week high.

3 Form 144 notices of planned sales are on file, the latest filed Sep 19, 2025.

Last 90 days

Net insider value
-$2.9M
more sold than bought
Buys
1
$90k by 1 insider
Sells
2
$3.0M by 2 insiders
Insiders on file
9
with a Form 4 at this company

Price and insider trades, last year

WULFOct 9, 2026 · close 13.77

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

Signals

Open-market buys and sells at TERAWULF INC., scored.

ScoreInsiderValueHoldingsPrice contextFiled
24WeakMichael C. Bucella
director
buy
$90k
6,085 shares
+2%-
58ModerateCatherine J. Motz
director
sell
$998k
56,023 shares
-27%-
58ModerateWalter E. Carter
director
sell
$2.0M
130,626 shares
-36%-
58ModeratePaul B. Prager
Chief Executive Officer
sell
$4.5M
275,000 shares
-56%+624% from low-9% from high
24WeakMichael C. Bucella
director
buy
$25k
1,665 shares
+1%+574% from low-16% from high
28WeakMichael C. Bucella
director
buy
$75k
4,835 shares
+2%+616% from low-10% from high
60NotablePatrick Fleury
Chief Financial Officer
sell
$9.7M
600,000 shares
-16%+616% from low-10% from high
19WeakMichael C. Bucella
director
buy
$20k
1,338 shares
+0%+579% from low-15% from high
24WeakMichael C. Bucella
director
buy
$30k
2,085 shares
+1%+580% from low-15% from high
22WeakMichael C. Bucella
director
buy
$50k
3,171 shares
+1%+586% from low-14% from high
26WeakMichael C. Bucella
director
buy
$50k
4,178 shares
+2%+421% from low-27% from high
39WeakCatherine J. Motz
director
sell
$584k
52,942 shares
-25%+390% from low-3% from high
26WeakAmanda Fabiano
director
sell
$40k
4,600 shares
-10%+300% from low0% from high
24WeakCatherine J. Motz
director
sell
$83k
21,182 shares
-10%+71% from low-56% from high
15WeakMichael C. Bucella
director
buy
$20k
4,796 shares
+2%-

Planned sales

Form 144 notices filed before a sale of restricted or control stock, newest first. The sale itself usually reaches a Form 4 within days. All planned sales

FiledSellerSharesValueSale datePast 3 months
Sep 19, 2025 Lake Harriet Holdings, LLC
Affiliate
350,000
0.09% of outstanding
$3.9MSep 19, 2025none
Sep 19, 2025 Motz Catherine J.
Director
52,942
0.01% of outstanding
$601kSep 19, 2025$83k
Jun 18, 2025 Motz Catherine J.
Director
21,182
0.01% of outstanding
$82kJun 18, 2025none

Transactions

The newest 50 of 167 rows filed, every code.

DateInsiderTransactionSharesPriceValueHoldings afterFiled
Sep 30, 2026Walter E. Carter
director
AGrant or award
Common stock, $0.001 par value per share
+2,112--231,20211 d ago
Sep 30, 2026Lisa A. Prager
director
AGrant or award
Common stock, $0.001 par value per share
+1,690--313,20011 d ago
Sep 30, 2026Michael C. Bucella
director
AGrant or award
Common stock, $0.001 par value per share
+1,690--352,47911 d ago
Sep 29, 2026Nazar M. Khan
Chief Technology Officer
MOption exercise
Common stock, $0.001 par value per share
+666,667--667,16714 d ago
Sep 29, 2026Nazar M. Khan
Chief Technology Officer
MOption exercise
Restricted Stock Unitsderivative
-666,667--1,333,33314 d ago
Sep 22, 2026Paul B. Prager
Chief Executive Officer
JOther
Forward sale contract (obligation to sell)derivativeindirect: By Riesling Power LLC
+3,000,000--3,000,00020 d ago
Sep 15, 2026Michael C. Bucella
director
POpen-market purchase
Common stock, $0.001 par value per share
+6,085$14.79$90k350,78927 d ago
Sep 10, 2026Nazar M. Khan
Chief Technology Officer
JOther
Forward sale contract (obligation to sell)derivativeindirect: By Lake Harriet Holdings, LLC
-350,000--032 d ago
Sep 10, 2026Nazar M. Khan
Chief Technology Officer
JOther
Forward sale contract (obligation to sell)derivativeindirect: By Lake Harriet Holdings, LLC
+350,000--350,00032 d ago
Sep 8, 2026Catherine J. Motz
director
SOpen-market sale
Common stock, $0.001 par value per share
-56,023$17.81$998k153,21834 d ago
Aug 31, 2026Walter E. Carter
director
SOpen-market sale
Common stock, $0.001 par value per share
-130,626$15.14$2.0M229,09042 d ago
Jun 23, 2026Amanda Fabiano
director
MOption exercise
Common stock, $0.001 par value per share
+56,023--96,792Jun 25, 2026
Jun 23, 2026Michael C. Bucella
director
MOption exercise
Common stock, $0.001 par value per share
+56,023--337,808Jun 25, 2026
Jun 23, 2026Walter E. Carter
director
MOption exercise
Common stock, $0.001 par value per share
+56,023--358,450Jun 25, 2026
Jun 23, 2026Walter E. Carter
director
MOption exercise
Restricted Stock Unitsderivative
-56,023$0.00$00Jun 25, 2026
Jun 23, 2026Amanda Fabiano
director
MOption exercise
Restricted Stock Unitsderivative
-56,023$0.00$00Jun 25, 2026
Jun 23, 2026Michael C. Bucella
director
MOption exercise
Restricted Stock Unitsderivative
-56,023$0.00$00Jun 25, 2026
Jun 23, 2026Walter E. Carter
director
AGrant or award
Restricted Stock Unitsderivative
+6,950$0.00$06,950Jun 25, 2026
Jun 23, 2026Amanda Fabiano
director
AGrant or award
Restricted Stock Unitsderivative
+6,950$0.00$06,950Jun 25, 2026
Jun 23, 2026Michael C. Bucella
director
AGrant or award
Restricted Stock Unitsderivative
+6,950$0.00$06,950Jun 25, 2026
May 18, 2026Patrick Fleury
Chief Financial Officer
MOption exercise
Common stock, $0.001 par value per share
+327,054--4,134,214May 20, 2026
May 18, 2026Patrick Fleury
Chief Financial Officer
DDisposition to issuer
Common stock, $0.001 par value per share
-128,695--4,005,519May 20, 2026
May 18, 2026Patrick Fleury
Chief Financial Officer
MOption exercise
Performance-Based Restricted Stock Unitsderivative
-327,054$0.00$00May 20, 2026
May 6, 2026Patrick Fleury
Chief Financial Officer
MOption exercise
Common stock, $0.001 par value per share
+327,054--3,935,855May 8, 2026
May 6, 2026Patrick Fleury
Chief Financial Officer
DDisposition to issuer
Common stock, $0.001 par value per share
-128,695--3,807,160May 8, 2026
May 6, 2026Patrick Fleury
Chief Financial Officer
MOption exercise
Performance-Based Restricted Stock Unitsderivative
-327,054--327,054May 8, 2026
Apr 24, 2026Patrick Fleury
Chief Financial Officer
MOption exercise
Common stock, $0.001 par value per share
+327,054--3,737,496Apr 24, 2026
Apr 24, 2026Patrick Fleury
Chief Financial Officer
DDisposition to issuer
Common stock, $0.001 par value per share
-128,695--3,608,801Apr 24, 2026
Apr 24, 2026Patrick Fleury
Chief Financial Officer
MOption exercise
Performance-Based Restricted Stock Unitsderivative
-327,054--654,108Apr 24, 2026
Apr 14, 2026Patrick Fleury
Chief Financial Officer
MOption exercise
Common stock, $0.001 par value per share
+327,054--3,532,054Apr 16, 2026
Apr 14, 2026Patrick Fleury
Chief Financial Officer
DDisposition to issuer
Common stock, $0.001 par value per share
-121,612--3,410,442Apr 16, 2026
Apr 14, 2026Patrick Fleury
Chief Financial Officer
MOption exercise
Performance-Based Restricted Stock Unitsderivative
-327,054--981,162Apr 16, 2026
Mar 31, 2026Michael C. Bucella
director
AGrant or award
Common stock, $0.001 par value per share
+1,733--281,785Apr 9, 2026
Mar 31, 2026Walter E. Carter
director
AGrant or award
Common stock, $0.001 par value per share
+2,166--302,427Apr 9, 2026
Mar 24, 2026Paul B. Prager
Chief Executive Officer
SOpen-market sale
Common stock, $0.001 par value per share10b5-1
-137,500$16.10$2.2M354,200Mar 25, 2026
Mar 25, 2026Paul B. Prager
Chief Executive Officer
SOpen-market sale
Common stock, $0.001 par value per share10b5-1
-133,700$16.94$2.3M220,500Mar 25, 2026
Mar 25, 2026Paul B. Prager
Chief Executive Officer
SOpen-market sale
Common stock, $0.001 par value per share10b5-1
-3,800$17.62$67k216,700Mar 25, 2026
Mar 20, 2026Michael C. Bucella
director
POpen-market purchase
Common stock, $0.001 par value per share
+1,665$15.04$25k280,052Mar 20, 2026
Mar 17, 2026Michael C. Bucella
director
POpen-market purchase
Common stock, $0.001 par value per share
+1,584$16.00$25k275,136Mar 19, 2026
Mar 17, 2026Patrick Fleury
Chief Financial Officer
SOpen-market sale
Common stock, $0.001 par value per share
-573,586$16.14$9.3M3,205,000Mar 19, 2026
Mar 18, 2026Michael C. Bucella
director
POpen-market purchase
Common stock, $0.001 par value per share
+1,581$15.79$25k276,717Mar 19, 2026
Mar 17, 2026Patrick Fleury
Chief Financial Officer
SOpen-market sale
Common stock, $0.001 par value per shareindirect: By Teton Rough Riders Mining LLC
-26,414$16.14$426k0Mar 19, 2026
Mar 19, 2026Michael C. Bucella
director
POpen-market purchase
Common stock, $0.001 par value per share
+1,670$14.96$25k278,387Mar 19, 2026
Mar 11, 2026Michael C. Bucella
director
POpen-market purchase
Common stock, $0.001 par value per share
+1,338$14.91$20k273,552Mar 13, 2026
Mar 5, 2026Michael C. Bucella
director
POpen-market purchase
Common stock, $0.001 par value per share
+654$15.31$10k270,783Mar 9, 2026
Mar 6, 2026Michael C. Bucella
director
POpen-market purchase
Common stock, $0.001 par value per share
+679$14.80$10k271,462Mar 9, 2026
Mar 9, 2026Michael C. Bucella
director
POpen-market purchase
Common stock, $0.001 par value per share
+752$13.31$10k272,214Mar 9, 2026
Mar 4, 2026Michael C. Bucella
director
POpen-market purchase
Common stock, $0.001 par value per share
+3,171$15.78$50k270,129Mar 4, 2026
Jan 14, 2026William Joseph Tanimoto
Chief Accounting Officer
AGrant or award
Restricted Stock Unitsderivative
+9,419$0.00$09,419Jan 16, 2026
Jan 9, 2026William Joseph Tanimoto
Chief Accounting Officer
MOption exercise
Common stock, $0.001 par value per share
+16,667--44,194Jan 9, 2026
50 of 167 rows shown.

Insiders

Everyone who has filed a Form 4 here.

Questions about WULF

Answered from the filings on this page, as of the latest one.

Are insiders buying WULF?

As of Oct 2, 2026, SEC Form 4 filings show 1 open-market buy worth $90k by 1 insider and 2 open-market sells worth $3.0M by 2 insiders at TERAWULF INC. in the last 90 days, net -$2.9M. Only purchases (code P) and sales (code S) count; grants, option exercises and tax withholding do not.

Who was the last insider to trade WULF on the open market?

Michael C. Bucella (director) bought $90k of WULF on Sep 15, 2026 and filed the Form 4 on Sep 16, 2026. InsiderTell scored 24 (weak).

How many insiders file Form 4 at TERAWULF INC.?

9 people have filed a Form 4 at TERAWULF INC., among them Michael C. Bucella (director), Walter E. Carter (director), Amanda Fabiano (director and COO). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.