Director Michael Bucella increases TERAWULF (WULF) stake with open-market buys

Rhea-AI Filing Summary

TERAWULF INC. director Michael C. Bucella reported open-market purchases of common stock over three consecutive days. He bought 1,584 shares at $16.00 on March 17, 2026, 1,581 shares at $15.79 on March 18, 2026, and 1,670 shares at $14.96 on March 19, 2026, totaling 4,835 shares. Following these transactions, he directly owns 278,387 shares.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Bucella Michael C.

(Last) (First) (Middle)

C/O TERAWULF INC.

9 FEDERAL STREET

(Street)

EASTON MARYLAND 21601

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
TERAWULF INC. [ WULF ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/17/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common stock, $0.001 par value per share	03/17/2026		P		1,584	A	$16	275,136	D
Common stock, $0.001 par value per share	03/18/2026		P		1,581	A	$15.79	276,717	D
Common stock, $0.001 par value per share	03/19/2026		P		1,670	A	$14.96	278,387	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

	/s/ Stefanie C. Fleischmann, as attorney-in-fact for Michael C. Bucella	03/19/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider activity did TERAWULF (WULF) report in this Form 4?

TERAWULF director Michael C. Bucella reported buying common shares in three open-market transactions. He purchased 4,835 shares in total over March 17–19, 2026, increasing his direct ownership to 278,387 shares after the latest transaction.

How many TERAWULF (WULF) shares did Michael C. Bucella buy and at what prices?

Michael C. Bucella bought 4,835 TERAWULF shares in total. He purchased 1,584 shares at $16.00, 1,581 shares at $15.79, and 1,670 shares at $14.96 per share in open-market transactions during March 17–19, 2026.

What is Michael C. Bucella’s total TERAWULF (WULF) shareholding after these purchases?

After the reported open-market purchases, Michael C. Bucella directly owns 278,387 shares of TERAWULF common stock. This figure reflects his holdings immediately following the March 19, 2026 transaction as disclosed in the Form 4 filing data.

Were the TERAWULF (WULF) insider transactions open-market purchases or other types of trades?

All reported transactions were open-market purchases of TERAWULF common stock. Each trade is coded “P” in the filing, described as a purchase in an open-market or private transaction, indicating straightforward buying rather than option exercises, gifts, or tax-related dispositions.

Over what dates did the TERAWULF (WULF) director accumulate additional shares?

The director accumulated additional TERAWULF shares over three consecutive days: March 17, 2026, March 18, 2026, and March 19, 2026. Each day’s transaction added to his direct holdings as detailed in the Form 4 transaction table.