Reported relationships
Latest disclosed role at each company.
No relationships currently tracked through insider filings.
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
No balances currently tracked through insider filings.
Past disclosures · reporting ended (1)
No longer tracked through insider filings. These historical balances do not imply present ownership or a zero position.
CLEANSPARK, INC.
Report date August 10, 2025 · Filed August 12, 2025
Section 16 reporting ended · disclosed 2025-08-12. Current position is not established by this disclosure.
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 4,777,481 |
Reported balance
After 2025-08-10 transaction · row 1
Account or security details depend on footnotes; rows are not merged.
1 source rowRow 1 · 2025-08-10 · Grant · Acquired 1,728,688 · Balance 4,777,481 F1: This amount represents 1,728,688 RSUs, 50% of which vested immediately upon grant, and the remaining 50% of which shall vest in equal installments on August 10, 2026 and August 10,2027, subject to the Reporting Person's ongoing compliance through each vesting date with the Separation and General Release Agreement between the Company and the Reporting Person dated August 10, 2025, which was previously disclosed on the Company's Current Report on Form 8-K filed with the SEC on August 11, 2025. F2: This total amount includes 864,344 RSUs, 50% of which will vest on August 10, 2026, and the remaining 50% will vest on August 10, 2027, subject to the Reporting Person's ongoing compliance through each vesting date with the Separation and General Release Agreement between the Company and the Reporting Person dated August 10, 2025, which was previously disclosed on the Company's Current Report on Form 8-K filed with the SEC on August 11, 2025. |
| Common StockSEC Table I · non-derivative | IndirectBy ZRB Holdings Inc. | 323,864 |
Reported balance
Holding disclosure · report date 2025-08-10 · row 2
Holding and transaction disclosures are not merged.
1 source rowRow 2 · Balance 323,864 F3: The Reporting Person is the sole shareholder of ZRB Holdings Inc. |
| Series A PreferredSEC Table I · non-derivative | Direct | 500,000 |
Reported balance
Holding disclosure · report date 2025-08-10 · row 3
Holding and transaction disclosures are not merged.
1 source rowRow 3 · Balance 500,000 |
| Employee Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $23.00 · Expires 2026-04-15 | Direct | 500,000 |
Reported balance
Holding disclosure · report date 2025-08-10 · row 4
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 4 · Balance 500,000 |
Filing footnotes · ownership attribution and instrument terms
F1: This amount represents 1,728,688 RSUs, 50% of which vested immediately upon grant, and the remaining 50% of which shall vest in equal installments on August 10, 2026 and August 10,2027, subject to the Reporting Person's ongoing compliance through each vesting date with the Separation and General Release Agreement between the Company and the Reporting Person dated August 10, 2025, which was previously disclosed on the Company's Current Report on Form 8-K filed with the SEC on August 11, 2025.
F2: This total amount includes 864,344 RSUs, 50% of which will vest on August 10, 2026, and the remaining 50% will vest on August 10, 2027, subject to the Reporting Person's ongoing compliance through each vesting date with the Separation and General Release Agreement between the Company and the Reporting Person dated August 10, 2025, which was previously disclosed on the Company's Current Report on Form 8-K filed with the SEC on August 11, 2025.
F3: The Reporting Person is the sole shareholder of ZRB Holdings Inc.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| April 26, 2021 Filed Apr 27, 2021 20:16 UTC | CLEANSPARK, INC. CLSK · Entity 4270 | Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative | 5,857 | $0.00 Strike: $9.00 | $0.00 |
DisclosureSEC source: 0001663577-21-000202 · ownership.xml · derivative · entry 6 Bradford Zachary · CIK 0001625557 · Director · CEO and President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 19,143 Underlying: Common Stock · 5,857 shares Expires 2023-10-25 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| April 26, 2021 Filed Apr 27, 2021 20:16 UTC | CLEANSPARK, INC. CLSK · Entity 4270 | Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative | 7,143 | $0.00 Strike: $5.60 | $0.00 |
DisclosureSEC source: 0001663577-21-000202 · ownership.xml · derivative · entry 5 Bradford Zachary · CIK 0001625557 · Director · CEO and President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 7,143 shares Expires 2022-12-20 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| April 26, 2021 Filed Apr 27, 2021 20:16 UTC | CLEANSPARK, INC. CLSK · Entity 4270 | Exercise / conversionCommon Stock | 5,857 | $9.00 | $52,713.00 |
DisclosureSEC source: 0001663577-21-000202 · ownership.xml · nonDerivative · entry 2 Bradford Zachary · CIK 0001625557 · Director · CEO and President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 283,973 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · price: $52,713.00 was paid in cash by the reporting person as consideration for the option exercise. F2 · balance_after: This includes 69,000 shares of restricted common stock issued to the Reporting Person on October 26, 2020, the vesting of which shares is subject to the achievement of certain corporate milestones of the Issuer for fiscal year 2021. Read SEC document |
| April 26, 2021 Filed Apr 27, 2021 20:16 UTC | CLEANSPARK, INC. CLSK · Entity 4270 | Exercise / conversionCommon Stock | 7,143 | $5.60 | $40,000.80 |
DisclosureSEC source: 0001663577-21-000202 · ownership.xml · nonDerivative · entry 1 Bradford Zachary · CIK 0001625557 · Director · CEO and President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 278,116 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · price: $40,000.80 was paid in cash by the reporting person as consideration for the option exercise. F2 · balance_after: This includes 69,000 shares of restricted common stock issued to the Reporting Person on October 26, 2020, the vesting of which shares is subject to the achievement of certain corporate milestones of the Issuer for fiscal year 2021. Read SEC document |
| April 16, 2021 Filed Apr 20, 2021 23:18 UTC | CLEANSPARK, INC. CLSK · Entity 4270 | GrantEmployee Stock Option (Right to Buy) · Derivative | 500,000 | $0.00 Strike: $23.00 | $0.00 |
DisclosureSEC source: 0001663577-21-000194 · ownership.xml · derivative · entry 4 Bradford Zachary · CIK 0001625557 · Director · CEO and President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 500,000 Underlying: Common Stock · 500,000 shares Expires 2026-04-15 F5 · shares: The Reporting Person's ability to exercise 335,000 of the 500,000 Stock Options (the "Contingent Options") reported herein is conditioned upon stockholder approval of an amendment to the Plan. If such stockholder approval is not obtained, then the Contingent Options shall be forfeited by the Reporting Person. F5 · derivative.exercise_date: The Reporting Person's ability to exercise 335,000 of the 500,000 Stock Options (the "Contingent Options") reported herein is conditioned upon stockholder approval of an amendment to the Plan. If such stockholder approval is not obtained, then the Contingent Options shall be forfeited by the Reporting Person. F6 · derivative.exercise_date: The Stock Options shall vest in 36 equal monthly installments from the grant date. Read SEC document |
| April 16, 2021 Filed Apr 20, 2021 23:18 UTC | CLEANSPARK, INC. CLSK · Entity 4270 | GrantCommon Stock | 50,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001663577-21-000194 · ownership.xml · nonDerivative · entry 1 Bradford Zachary · CIK 0001625557 · Director · CEO and President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 270,973 F1 · shares: Represents 50,000 restricted stock units awarded to the Reporting Person under the Issuer's 2017 Equity Incentive Plan (the "Plan") in connection with the Reporting Person's service as an executive officer and director of the Issuer, which restricted stock units were fully vested upon issuance. F2 · balance_after: This includes 69,000 shares of restricted common stock issued to the Reporting Person on October 26, 2020, the vesting of which shares is subject to the achievement of certain corporate milestones of the Issuer for fiscal year 2021. Read SEC document |
| February 12, 2021 Filed Feb 17, 2021 19:25 UTC | CLEANSPARK, INC. CLSK · Entity 4270 | Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative | 17,857 | $0.00 Strike: $5.60 | $0.00 |
DisclosureSEC source: 0001663577-21-000073 · ownership.xml · derivative · entry 4 Bradford Zachary · CIK 0001625557 · Director · CEO and President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 7,143 Underlying: Common Stock · 17,857 shares Expires 2022-12-20 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F4 · derivative.exercise_price: $99,999.20 was paid in cash by the reporting person as consideration for the option exercise. Read SEC document |
| February 12, 2021 Filed Feb 17, 2021 19:25 UTC | CLEANSPARK, INC. CLSK · Entity 4270 | Exercise / conversionCommon Stock | 17,857 | $5.60 | $99,999.20 |
DisclosureSEC source: 0001663577-21-000073 · ownership.xml · nonDerivative · entry 1 Bradford Zachary · CIK 0001625557 · Director · CEO and President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 220,973 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · balance_after: This includes 69,000 shares of restricted common stock issued to the reporting person on October 26, 2020, the vesting of which shares is subject to the achievement of certain corporate milestones of the issuer for fiscal year 2021. Read SEC document |
| December 31, 2020 Filed Jan 6, 2021 02:24 UTC | CLEANSPARK, INC. CLSK · Entity 4270 | Exercise / conversionWarrant (Right to Buy) · Derivative | 25,000 | $0.00 Strike: $0.83 | $0.00 |
DisclosureSEC source: 0001663577-21-000012 · ownership.xml · derivative · entry 3 Bradford Zachary · CIK 0001625557 · Director · CEO and President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 25,000 shares Expires 2025-03-12 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| December 31, 2020 Filed Jan 6, 2021 02:24 UTC | CLEANSPARK, INC. CLSK · Entity 4270 | Tax withholdingCommon Stock | 715 | $29.05 | $20,770.75 |
DisclosureSEC source: 0001663577-21-000012 · ownership.xml · nonDerivative · entry 2 Bradford Zachary · CIK 0001625557 · Director · CEO and President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 538,980 F1 · balance_after: Includes 323,864 shares of common stock held in ZRB Holdings Inc. in which Mr. Bradford is the beneficial owner, 12,000 shares of common stock held in BlueChip Advisors LLC in which Mr. Bradford shares beneficial ownership, and 203,116 shares of common stock held in his name. Read SEC document |
| December 31, 2020 Filed Jan 6, 2021 02:24 UTC | CLEANSPARK, INC. CLSK · Entity 4270 | Exercise / conversionCommon Stock | 25,000 | $0.83 | $20,750.00 |
DisclosureSEC source: 0001663577-21-000012 · ownership.xml · nonDerivative · entry 1 Bradford Zachary · CIK 0001625557 · Director · CEO and President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 539,695 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| October 26, 2020 Filed Oct 29, 2020 00:56 UTC | CLEANSPARK, INC. CLSK · Entity 4270 | GrantStock Option (Right to Buy) · Derivative | 30,000 | $0.00 Strike: $9.00 | $0.00 |
DisclosureSEC source: 0001663577-20-000391 · ownership.xml · derivative · entry 4 Bradford Zachary · CIK 0001625557 · Director · CEO and President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 30,000 Underlying: Common Stock · 30,000 shares Expires 2023-10-25 F5 · derivative.exercise_date: On October 26, 2020, the compensation committee of the board of directors of the issuer approved the grant of an option to purchase 30,000 shares of common stock to Mr. Bradford under the issuer's equity incentive plan which options vest pursuant to certain corporate milestones of the issuer for fiscal year 2021. The options were granted with an exercise price of $9.00 per share. Read SEC document |
| October 26, 2020 Filed Oct 29, 2020 00:56 UTC | CLEANSPARK, INC. CLSK · Entity 4270 | GrantStock Option (Right to Buy) · Derivative | 25,000 | $0.00 Strike: $9.00 | $0.00 |
DisclosureSEC source: 0001663577-20-000391 · ownership.xml · derivative · entry 3 Bradford Zachary · CIK 0001625557 · Director · CEO and President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 25,000 Underlying: Common Stock · 25,000 shares Expires 2023-10-25 F4 · shares: On October 26, 2020, the compensation committee of the board of directors of the issuer approved the grant of an option to purchase 25,000 shares of common stock to Mr. Bradford under the issuer's equity incentive plan as a bonus for fiscal year 2020 ended September 30, 2020. The options were fully vested on grant and were granted with an exercise price of $9.00 per share Read SEC document |
| October 26, 2020 Filed Oct 29, 2020 00:56 UTC | CLEANSPARK, INC. CLSK · Entity 4270 | GrantCommon Stock | 69,000 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001663577-20-000391 · ownership.xml · nonDerivative · entry 2 Bradford Zachary · CIK 0001625557 · Director · CEO and President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 484,695 F3 · shares: On October 26, 2020, the compensation committee of the board of directors of the issuer approved an issuance of 69,000 shares of restricted common stock to Mr. Bradford under the issuer's equity incentive plan which shares vest pursuant to certain corporate milestones of the issuer for fiscal year 2021. The shares were valued at the closing traded price of the Company's common stock on October 26, 2020 of $8.07 per share. F3 · price: On October 26, 2020, the compensation committee of the board of directors of the issuer approved an issuance of 69,000 shares of restricted common stock to Mr. Bradford under the issuer's equity incentive plan which shares vest pursuant to certain corporate milestones of the issuer for fiscal year 2021. The shares were valued at the closing traded price of the Company's common stock on October 26, 2020 of $8.07 per share. F2 · balance_after: In addition to the stock grants disclosed on this Form 4, this includes 323,864 shares of common stock held in ZRB Holdings Inc. in which Mr. Bradford is the beneficial owner, 12,000 shares of common stock held in BlueChip Advisors LLC in which Mr. Bradford shares beneficial ownership, and 4,831 shares of common stock held in his name. Read SEC document |
| October 26, 2020 Filed Oct 29, 2020 00:56 UTC | CLEANSPARK, INC. CLSK · Entity 4270 | GrantCommon Stock | 75,000 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001663577-20-000391 · ownership.xml · nonDerivative · entry 1 Bradford Zachary · CIK 0001625557 · Director · CEO and President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 415,695 F1 · shares: On October 26, 2020, the compensation committee of the board of directors of the issuer approved an issuance of 75,000 shares of common stock to Mr. Bradford under the issuer's equity incentive plan as a bonus for fiscal year 2020. The shares were valued at the closing traded price of the Company's common stock on October 26, 2020 of $8.07 per share. F1 · price: On October 26, 2020, the compensation committee of the board of directors of the issuer approved an issuance of 75,000 shares of common stock to Mr. Bradford under the issuer's equity incentive plan as a bonus for fiscal year 2020. The shares were valued at the closing traded price of the Company's common stock on October 26, 2020 of $8.07 per share. F2 · balance_after: In addition to the stock grants disclosed on this Form 4, this includes 323,864 shares of common stock held in ZRB Holdings Inc. in which Mr. Bradford is the beneficial owner, 12,000 shares of common stock held in BlueChip Advisors LLC in which Mr. Bradford shares beneficial ownership, and 4,831 shares of common stock held in his name. Read SEC document |
| October 26, 2020 Filed Jan 6, 2021 02:21 UTC Amendment | CLEANSPARK, INC. CLSK · Entity 4270 | GrantCommon Stock | 30,000 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001663577-21-000008 · ownership.xml · nonDerivative · entry 1 Bradford Zachary · CIK 0001625557 · Director · CEO and President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 514,695 F1 · shares: On October 26, 2020, the compensation committee of the board of directors of the issuer approved an issuance of 30,000 shares of restricted common stock to Mr. Bradford under the issuer's equity incentive plan which shares vest monthly over fiscal year 2021. The shares were valued at the closing traded price of the Company's common stock on October 26, 2020 of $8.07 per share. F2 · shares: The original Form 4, filed on October 28, 2020, is being amended by this Form 4 amendment solely to correct an administrative error, which failed to include the grant of 30,000 shares of restricted stock referenced herein. As a result of this administrative error, the number of shares beneficially owned by the reporting person following the corrected transaction reflects an increase in the number of shares reported as beneficially owned by the reporting person by 30,000 shares. F1 · price: On October 26, 2020, the compensation committee of the board of directors of the issuer approved an issuance of 30,000 shares of restricted common stock to Mr. Bradford under the issuer's equity incentive plan which shares vest monthly over fiscal year 2021. The shares were valued at the closing traded price of the Company's common stock on October 26, 2020 of $8.07 per share. F3 · balance_after: Includes 323,864 shares of common stock held in ZRB Holdings Inc. in which Mr. Bradford is the beneficial owner, 12,000 shares of common stock held in BlueChip Advisors LLC in which Mr. Bradford shares beneficial ownership, and 178,831 shares of common stock held in his name. Read SEC document |
| June 23, 2020 Filed Jun 25, 2020 20:28 UTC | CLEANSPARK, INC. CLSK · Entity 4270 | GrantCommon Stock | 4,831 | $2.07 | $10,000.17 |
DisclosureSEC source: 0001663577-20-000184 · ownership.xml · nonDerivative · entry 1 Bradford Zachary · CIK 0001625557 · Director · CEO and President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 340,694 F1 · shares: On June 23, 2020, the board of directors of the issuer approved an issuance of common stock to Mr. Bradford as payment for deferred compensation owed to Mr. Bradford in the amount of $10,000. The shares were issued at the closing bid price of common stock of the issuer on June 22, 2020 of $2.07. F2 · balance_after: Includes 323,863 shares of common stock held in ZRB Holdings Inc. in which Mr. Bradford is the beneficial owner and 12,000 shares of common stock held in BlueChip Advisors LLC in which Mr. Bradford shares beneficial ownership. Read SEC document |
| December 20, 2019 Filed Dec 26, 2019 21:08 UTC | CLEANSPARK, INC. CLSK · Entity 4270 | GrantStock Option (Right to Buy) · Derivative | 25,000 | $0.00 Strike: $5.60 | $0.00 |
DisclosureSEC source: 0001663577-19-000440 · ownership.xml · derivative · entry 1 Bradford Zachary · CIK 0001625557 · Director · CEO and President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 25,000 Underlying: Common Stock · 25,000 shares Expires 2022-12-20 F1 · derivative.exercise_date: The option shares are fully vested as of the date of grant. Read SEC document |
| January 09, 2019 Filed Jan 12, 2019 00:16 UTC | CLEANSPARK, INC. CLSK · Entity 4270 | PurchaseStock Options · Derivative | 250,000 | $16,667.00 Strike: $0.08 | $4,166,750,000.00 |
DisclosureSEC source: 0001663577-19-000024 · ownership.xml · derivative · entry 1 Bradford Zachary · CIK 0001625557 · Director · CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 250,000 Underlying: Common Stock · 250,000 shares Expires 2025-03-12 Read SEC document |
| November 04, 2016 Filed Nov 8, 2016 18:02 UTC | CLEANSPARK, INC. SRTN · Entity 4270 | SaleStock Option · Derivative | 1,500,000 | $0.00 Strike: $0.08 | $0.00 |
DisclosureSEC source: 0001663577-16-000376 · mainbody.xml · derivative · entry 2 Bradford Zachary · CIK 0001625557 · Director · CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 1,500,000 shares Expires 2025-03-10 F1 · kind: The Reporting Person has elected to convert 1,500,000 stock options through a cashless exercise into common stock of the Issuer. Read SEC document |
| November 04, 2016 Filed Nov 8, 2016 18:02 UTC | CLEANSPARK, INC. SRTN · Entity 4270 | ConversionCommon Stock | 1,466,352 | $0.08 | $121,707.22 |
DisclosureSEC source: 0001663577-16-000376 · mainbody.xml · nonDerivative · entry 1 Bradford Zachary · CIK 0001625557 · Director · CFO 10b5-1 filing: Not disclosed Ownership: Indirect · ZRB Holdings, Inc. Disclosed balance after: 3,358,632 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.