S. Matthew Schultz - 13 May 2026 Form 4 Insider Report for CLEANSPARK, INC. (CLSK)

Reporting relationship: CEO & Chairman, Director
Issuer ticker: CLSK
Reported as of: 13 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 14 May 2026, 21:42:04 UTC
Prior SEC filing: 24 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ S. Matthew Schultz

Key filing fact

S. Matthew Schultz filed Form 4 for CLEANSPARK, INC. (CLSK) on 14 May 2026.

Key facts

This page summarizes S. Matthew Schultz's Form 4 filing for CLEANSPARK, INC. (CLSK).
3 reported transactions and 9 derivative rows are listed below.
Accepted by SEC: 14 May 2026, 21:42.

Change

Previous filing in this sequence was filed on 24 Mar 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001625587 Primary reporting owner

Schultz S. Matthew

Relationship: CEO & Chairman, Director
Address: 10624 S. EASTERN AVE., SUITE A-638, HENDERSON
Signature: /s/ S. Matthew Schultz
Signature date: 14 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CLSK transaction

Common Stock

Options Exercise

Transaction value
Shares: +20,525
Change %: +0.84%
Price: $0.000000^*
Shares after: 2,475,670
Date: 13 May 2026
Ownership: Direct

CLSK transaction

Common Stock

Tax liability

Transaction value
Shares: -9,031
Change %: -0.36%
Price: $13.98^*
Shares after: 2,466,639
Date: 14 May 2026
Ownership: Direct
Footnotes: F1

CLSK holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 2,455,145
Date: 13 May 2026
Ownership: Direct

CLSK holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 480,000
Date: 13 May 2026
Ownership: By S M Schultz Irrevocable Trust

CLSK holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 40,996
Date: 13 May 2026
Ownership: By Spouse

CLSK holding

Series A Preferred

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 500,000
Date: 13 May 2026
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

CLSK transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -20,525
Change %: -14%
Price: $0.000000^*
Shares after: 123,148
Date: 13 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 20,525
Exercise price: $0.000000
Footnotes: F5

CLSK holding Derivative

Employee Stock Options (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 400,000
Date: 13 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 400,000
Exercise price: $23.00
Footnotes: F2

CLSK holding Derivative

Restricted Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 627,753
Date: 13 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 627,753
Exercise price: $0.000000
Footnotes: F3

CLSK holding Derivative

Restricted Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 1,080,625
Date: 13 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,080,625
Exercise price: $0.000000
Footnotes: F4

CLSK holding Derivative

Restricted Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 1,729,000
Date: 13 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,729,000
Exercise price: $0.000000
Footnotes: F3

CLSK holding Derivative

Restricted Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 143,673
Date: 13 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 143,673
Exercise price: $0.000000
Footnotes: F5

CLSK holding Derivative

Restricted Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 640,000
Date: 13 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 640,000
Exercise price: $0.000000
Footnotes: F6

CLSK holding Derivative

Performance Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 480,000
Date: 13 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 480,000
Exercise price: $0.000000
Footnotes: F7

CLSK holding Derivative

Performance Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 1,816,000
Date: 13 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,816,000
Exercise price: $0.000000
Footnotes: F8

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 8 footnotes

Footnote F1

This is a weighted average of prices for all sales made on May 14, 2026, ranging from $13.9700 to $13.9850. Upon request, the Reporting Person will provide to the SEC, the Issuer, or any security holder of the Issuer full information regarding the number of shares sold at each separate price.

Footnote F2

These Options were granted on April 16, 2021 and vested in equal monthly installments over 36 months.

Footnote F3

These RSUs vest in equal annual installments over three years on September 4, 2026, September 4, 2027, and September 4, 2028.

Footnote F4

These RSUs vest in equal semiannual installments over three years on September 4, 2026, February 13, 2027, September 4, 2027, February 13, 2028, and September 4, 2028.

Footnote F5

These RSUs vest in equal quarterly installments on August 13, 2026, December 3, 2026, February 12, 2027, May 13, 2027, August 13, 2027, and December 3, 2027.

Footnote F6

These RSUs vest in equal annual installments over three years on March 20, 2027, March 20, 2028, and March 20, 2029, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

Footnote F7

Vesting of these Long-Term Incentive Plan ("LTIP") awards is contingent on the common stock achieving a specified target market price of at least $18.80 based on a 20-trading day average during the period ending March 20, 2027, subject to the Reporting Person remaining employed by the Issuer on the vesting date of March 20, 2029. The reported LTIP awards do not include LTIP awards in respect of a maximum of 480,000 shares of common stock for which such awards will vest in accordance with their terms upon achievement of specified performance goals tied to gross power under leases to customers for data centers, with threshold performance at 600 MW gross and maximum payout at 800 MW gross, during the period ending March 20, 2027, subject to the Reporting Person remaining employed by the Issuer on the vesting date of March 20, 2029.

Footnote F8

The number of shares under these Strategic Transformation Performance Awards ("STPA") represents the maximum number of common shares for which the STPAs will vest upon the Issuer's common stock achieving target market prices, based on a 20-trading day average, with threshold performance at $47 per share and maximum payout at $94 per share, before September 30, 2030, subject to the Reporting Person remaining employed by the Issuer on September 30, 2030. The reported STPA awards do not include 1,816,000 shares of common stock that vest upon achievement of performance goals tied to power under leases to customers for data centers that are operationally ready to host IT equipment and deliver services (RFS), with threshold performance at 1.0 GW and maximum payout at 2.5 GW, before September 30, 2030, subject to the Reporting Person remaining employed by the Issuer on September 30, 2030.