CleanSpark holder plans sale of 1.0M shares

Rhea-AI Filing Summary

CLEANSPARK, INC. (CLSK) is the issuer for a proposed resale of its common stock reported on Form 144 by S. Matthew Schultz. The notice lists a proposed disposition of 1,001,709 shares of CleanSpark common stock in connection with the vesting of RSUs on September 4, 2026, to be effected under Rule 144 and through a Rule 10b5-1(c) trading plan adopted on May 13, 2026. The filing also notes a prior sale of CleanSpark common stock by the same person during the past three months.

Key Figures

Shares proposed to be sold: 1,001,709 shares Date tied to proposed sale: September 4, 2026 Shares sold in past 3 months: 9,031 shares +2 more

5 metrics

Shares proposed to be sold 1,001,709 shares CleanSpark, Inc. common stock listed in Securities To Be Sold, linked to vesting of RSUs dated September 4, 2026

Date tied to proposed sale September 4, 2026 Appears as the date associated with the RSU vesting and as the Date of Notice

Shares sold in past 3 months 9,031 shares CleanSpark common stock sale by S. Matthew Schultz dated August 14, 2026

Aggregate figure for prior sale 103,947 Aggregate amount listed for the August 14, 2026 sale of 9,031 shares of CleanSpark common stock

Rule 10b5-1(c) plan adoption date May 13, 2026 Plan under which the proposed transaction will be made

Key Terms

Rule 144, Rule 10b5-1(c) plan, vesting of RSUs

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Rule 10b5-1(c) plan regulatory

"This transaction will be made pursuant to a Rule 10b5-1(c) plan adopted on May 13, 2026."

vesting of RSUs financial

"Common Stock | 09/04/2026 | Vesting of RSUs | CleanSpark, Inc."

FAQ

What does the Form 144 filing disclose for CLSK and S. Matthew Schultz?

The Form 144 filing discloses that S. Matthew Schultz has notified of a proposed Rule 144 sale of CleanSpark, Inc. (CLSK) common stock, related to the vesting of restricted stock units (RSUs) on September 4, 2026.

How many CLSK shares are proposed to be sold under this Form 144?

The notice lists a proposed disposition of 1,001,709 shares of CleanSpark, Inc. common stock in the Securities To Be Sold section, associated with the vesting of RSUs dated September 4, 2026.

Was the CLSK Form 144 sale tied to a Rule 10b5-1 plan?

Yes. The remarks state that the transaction "will be made pursuant to a Rule 10b5-1(c) plan" that was adopted on May 13, 2026, providing for pre-arranged trading instructions.

What prior CLSK stock sales by S. Matthew Schultz are disclosed?

The filing reports that S. Matthew Schultz sold 9,031 shares of CleanSpark common stock on August 14, 2026, with an aggregate figure of 103,947 listed for that transaction in the past three months section.

On which market is CleanSpark common stock referenced in this Form 144?

The securities information section identifies CleanSpark common stock in connection with trading on NASDAQ, indicating that the issuer’s common stock is referenced as listed on that market.

When was the Form 144 notice for the CLSK proposed sale dated?

The notice is dated September 4, 2026, which is shown as the Date of Notice for the proposed Rule 144 sale of CleanSpark common stock.

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Available on EDGAR 09/04/2026 - 09:00 PM Accepted by SEC EDGAR 09/04/2026 - 09:00 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001625587
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	CLEANSPARK, INC.
SEC File Number	001-39187
Address of Issuer	10624 S. Eastern Ave. Suite A - 638 Henderson NEVADA 89052
Phone	(702)-989-7692
Name of Person for Whose Account the Securities are To Be Sold	Schultz S. Matthew
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common Stock	Siebert Financial Corp. 535 Fifth Avenue, 4th Floor New York NY 10017	440752	5544660	257414823	09/04/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common Stock	09/04/2026	Vesting of RSUs	CleanSpark, Inc.			1001709	09/04/2026	N/A - Vesting of RSUs

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
S. Matthew Schultz 10624 S. Eastern Ave. Suite A-638 Henderson NV 89052	Common Stock	08/14/2026	9031	103947

144: Remarks and Signature

Remarks	This transaction will be made pursuant to a Rule 10b5-1(c) plan adopted on May 13, 2026.
Date of Notice	09/04/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ S. Matthew Schultz
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)