Jane Street Group (WULF) discloses 19.9M-share, 4.0% TeraWulf ownership

Rhea-AI Filing Summary

Jane Street Group, LLC and affiliated entities report beneficial ownership of 19,896,330 shares of TeraWulf Inc. common stock, representing 4.0% of the class as of the reporting date. All reported shares are held with shared voting and dispositive power; there is no sole voting or dispositive power.

The filing aggregates positions across several subsidiaries, including Jane Street Capital, LLC, Jane Street Global Trading, LLC, Leonard Street Holdings, LP, and Jane Street Singapore Pte. Limited. Each subsidiary’s holdings contribute to the group’s overall 4.0% ownership, which is now reported as at or below the 5 percent threshold for this class of securities.

Key Figures

Beneficial ownership: 19,896,330 shares Percent of class: 4.0% Jane Street Capital stake: 17,890,777 shares +3 more

6 metrics

Beneficial ownership 19,896,330 shares Shares of TeraWulf Inc. common stock beneficially owned by Jane Street Group and affiliates

Percent of class 4.0% Portion of TeraWulf common stock class beneficially owned by Jane Street Group and affiliates

Jane Street Capital stake 17,890,777 shares TeraWulf shares with shared voting and dispositive power held by Jane Street Capital, LLC

Leonard Street Holdings stake 1,994,649 shares TeraWulf shares with shared voting and dispositive power held by Leonard Street Holdings, LP

Jane Street Global Trading stake 10,245 shares TeraWulf shares with shared voting and dispositive power held by Jane Street Global Trading, LLC

Jane Street Singapore stake 659 shares TeraWulf shares with shared voting and dispositive power held by Jane Street Singapore Pte. Limited

Key Terms

beneficially owned, shared voting power, shared dispositive power, parent holding company

4 terms

beneficially owned financial

"Item 4. | Ownership (a) | Amount beneficially owned: 19,896,330.00"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

shared voting power financial

"Shared Voting Power 19,896,330.00"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

shared dispositive power financial

"Shared Dispositive Power 19,896,330.00"

parent holding company financial

"If a parent holding company has filed this schedule, pursuant to (ii)(G)"

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/10/2026 - 05:04 PM Accepted by SEC EDGAR 08/10/2026 - 05:04 PM Learn about SEC filing dates

FAQ

What percentage of TeraWulf Inc. (WULF) does Jane Street Group report owning?

Jane Street Group and affiliates report beneficial ownership of 19,896,330 shares of TeraWulf Inc. common stock, representing 4.0% of the class. This ownership is reported entirely as shared, with no sole voting or dispositive power.

How many TeraWulf (WULF) shares are beneficially owned by Jane Street Group and its subsidiaries?

Jane Street Group and its subsidiaries report beneficial ownership of 19,896,330 TeraWulf shares. All of these shares are subject to shared voting and shared dispositive power, with no sole authority over voting or disposition reported.

Which Jane Street entities hold TeraWulf Inc. (WULF) shares and in what amounts?

Subsidiaries reporting TeraWulf holdings include Jane Street Capital, LLC (17,890,777 shares), Leonard Street Holdings, LP (1,994,649 shares), Jane Street Global Trading, LLC (10,245 shares), and Jane Street Singapore Pte. Limited (659 shares) under shared voting and dispositive power.

Does Jane Street have sole voting power over any TeraWulf (WULF) shares?

No. The filing states 0 shares with sole voting power and 0 shares with sole dispositive power. All 19,896,330 shares are reported with shared voting and shared dispositive power across the group entities.

What type of security in TeraWulf Inc. (WULF) is reported by Jane Street Group?

The position relates to Common Stock, par value $0.001 per share of TeraWulf Inc. Jane Street Group and its subsidiaries collectively report 19,896,330 common shares, equal to 4.0% of that class as beneficially owned.

Why does Jane Street Group’s TeraWulf (WULF) holding appear on a Schedule 13G/A?

The group filed an amended Schedule 13G to report its current 4.0% beneficial ownership of TeraWulf common stock. This schedule is used to report holdings by certain institutional or passive investors once specified ownership thresholds are met or change.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

TERAWULF INC.

(Name of Issuer)

Common Stock, par value $0.001 per share

(Title of Class of Securities)

88080T104

(CUSIP Number)

06/30/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 88080T104

1

Names of Reporting Persons

JANE STREET GROUP, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 19,896,330.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 19,896,330.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

19,896,330.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

4.0 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP Number(s): 88080T104

1

Names of Reporting Persons

Jane Street Capital, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 17,890,777.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 17,890,777.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

17,890,777.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.6 %

12

Type of Reporting Person (See Instructions)

BD

SCHEDULE 13G

CUSIP Number(s): 88080T104

1

Names of Reporting Persons

Jane Street Global Trading, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 10,245.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 10,245.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

10,245.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

0.0 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP Number(s): 88080T104

1

Names of Reporting Persons

Leonard Street Holdings, LP

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,994,649.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,994,649.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,994,649.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

0.4 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP Number(s): 88080T104

1

Names of Reporting Persons

Jane Street Singapore Pte. Ltd

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

SINGAPORE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 659.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 659.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

659.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

0.0 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

Item 1.
(a)	Name of issuer: TERAWULF INC.
(b)	Address of issuer's principal executive offices: 9 FEDERAL STREET, 9 FEDERAL STREET, EASTON, MARYLAND, 21601.
Item 2.
(a)	Name of person filing: Jane Street Group, LLC; Jane Street Capital, LLC; Jane Street Global Trading, LLC; Leonard Street Holdings, LP; Jane Street Singapore Pte. Limited
(b)	Address or principal business office or, if none, residence: Jane Street Group, LLC 250 Vesey Street 3rd Floor New York, NY 10281 Jane Street Capital, LLC 250 Vesey Street 3rd Floor New York, NY 10281 Jane Street Global Trading, LLC 250 Vesey Street 3rd Floor New York, NY 10281 Leonard Street Holdings, LP 250 Vesey Street 3rd Floor New York, NY 10281 Jane Street Singapore Pte. Limited 2 Central Boulevard, #43-01 IOI Central Boulevard Towers (West Tower) 018916, Singapore
(c)	Citizenship: See Item 4 of Cover Page
(d)	Title of class of securities: Common Stock, par value $0.001 per share
(e)	CUSIP No.: 88080T104
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 19,896,330.00
(b)	Percent of class: 4.0%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 19,896,330.00
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 19,896,330.00
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. Subsidiary Jane Street Capital, LLC Jane Street Global Trading, LLC Leonard Street Holdings, LP Jane Street Singapore Pte. Limited
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

JANE STREET GROUP, LLC

Signature:	/s/ Jeremy Kahn
Name/Title:	Jeremy Kahn (Authorized Signatory)
Date:	08/10/2026

Jane Street Capital, LLC

Signature:	/s/ Jeremy Kahn
Name/Title:	Jeremy Kahn (Authorized Signatory)
Date:	08/10/2026

Jane Street Global Trading, LLC

Signature:	/s/ Jeremy Kahn
Name/Title:	Jeremy Kahn (Authorized Signatory)
Date:	08/10/2026

Leonard Street Holdings, LP

Signature:	/s/ Jeremy Kahn
Name/Title:	Jeremy Kahn (Authorized Signatory)
Date:	08/10/2026

Jane Street Singapore Pte. Ltd

Signature:	/s/ Jeremy Kahn
Name/Title:	Jeremy Kahn (Authorized Signatory)
Date:	08/10/2026