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NASDAQ · Financial Services · Holders

CleanSpark Inc. (CLSK) Institutional Ownership & Insider Trading History

Top CLSK institutional shareholders, filing changes, and Form 4 insider activity with filters for buys, sales, option exercises, gifts, and tax withholding.

Section freshness

Prices as of Sep 28, 4:00 PM EDT · Fundamentals checked Sep 29, 7:13 AM EDT · Statements Jun 30, 2026

Ownership read

CLSK insider transaction activity: Net selling.

Blackrock Inc. is the largest institutional holder. 17 sales and 0 purchases appear in the recent Form 4 filings. Use the filters below to separate open-market activity from option exercises, gifts, awards, and tax withholding.

Review insider tradesView institutions

Insider flow

CLSK

Purchases0
Sales357.17K

Directional bars ignore awards, gifts, conversions, and tax withholding rows.

Top holder

42.33M

Blackrock Inc.

Insider transaction activity

Net selling

$3.86M sold / $0.0000 bought

Observations shown

99

10 holder / 89 insider

Holder rows
10
Yahoo Finance · Filing dates shown per row
Increased / initiated
8
1 decreased · provider-reported changes
Insider rows
89
Yahoo Finance · Filing dates shown per row

Ownership concentration and transaction activity

Top 10 reported holders
0.00% outstanding
Changes with share-count history
Prior-position data unavailable
New / exited positions
0 / 0 explicitly reported
Largest increase with share-count history
Prior share counts unavailable

Reported-holder cohort only; absence from a limited provider list does not establish an exit. Changes are provider-reported and are only comparable quarter over quarter when the position periods match.

Net shares sold: 357,174

Sale-code S shares minus purchase-code P shares in this sample. Includes disclosed plans and unknown plan status; excludes grants, gifts, exercises and withholding. This is activity, not sentiment.

  • Purchase / sale; plan unknown: 17
  • Other / unclassified: 55
  • Grant: 16
  • Gift: 1

Top 10 institutional holders

CleanSpark Inc. (CLSK) institutional ownership

Ranked by reported share count, with position changes and separate position and filing dates where ownership data supplies them.

CleanSpark Inc. (CLSK) institutional ownership
#Institution% heldSharesChange %Position / filing date
1
Blackrock Inc.
0.00%42.33M+1.41%Position as of Jun 30, 2026Filing date unknown
2
Situational Awareness LP
0.00%12.28M0.00%Position as of Jun 30, 2026Filing date unknown
3
Vanguard Portfolio Management LLC
0.00%11.46M+3.31%Position as of Jun 30, 2026Filing date unknown
4
Shaw D.E. & Co., Inc.
0.00%11.26M+75.03%Position as of Jun 30, 2026Filing date unknown
5
Vanguard Capital Management LLC
0.00%11.12M+0.46%Position as of Jun 30, 2026Filing date unknown
6
State Street Corporation
0.00%11.00M+0.06%Position as of Jun 30, 2026Filing date unknown
7
Dimensional Fund Advisors LP
0.00%9.65M-31.59%Position as of Jun 30, 2026Filing date unknown
8
UBS Group AG
0.00%7.55M+127.88%Position as of Jun 30, 2026Filing date unknown
9
Geode Capital Management, LLC
0.00%7.26M+1.67%Position as of Jun 30, 2026Filing date unknown
10
Point72 Asset Management, L.P.
0.00%5.97M+272.47%Position as of Jun 30, 2026Filing date unknown
Showing 10 of 10 matching institutional rows.

Recent insider transactions

CleanSpark Inc. (CLSK) Form 4 filings

Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.

CleanSpark Inc. (CLSK) Form 4 insider transactions
#Insider% companyActionSharesTransaction date
1
MONNIG TAYLOR
Chief Operating Officer
0.01%SaleOpen-market or direct sale reported on Form 4.
Transaction context
Classification:
Purchase / sale; plan unknown
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

29.76KSep 8, 2026
2
GARRISON SCOTT EUGENE
Officer
0.12%OtherProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Other / unclassified
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

297.62KSep 4, 2026
3
MONNIG TAYLOR
Chief Operating Officer
0.12%OtherProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Other / unclassified
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

297.62KSep 4, 2026
4
CARSON BRIAN JAY
Officer
0.06%OtherProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Other / unclassified
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

153.65KSep 4, 2026
5
SCHULTZ MATTHEW
Chief Executive Officer
0.39%OtherProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Other / unclassified
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

1.00MSep 4, 2026
6
VECCHIARELLI GARY ANTHONY
President
0.16%OtherProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Other / unclassified
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

398.46KSep 4, 2026
7
MONNIG TAYLOR
Chief Operating Officer
<0.01%SaleOpen-market or direct sale reported on Form 4.
Transaction context
Classification:
Purchase / sale; plan unknown
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

54Aug 14, 2026
8
GARRISON SCOTT EUGENE
Officer
<0.01%OtherProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Other / unclassified
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

2.68KAug 13, 2026
9
MONNIG TAYLOR
Chief Operating Officer
<0.01%OtherProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Other / unclassified
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

536Aug 13, 2026
10
SCHULTZ MATTHEW
Chief Executive Officer
<0.01%OtherProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Other / unclassified
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

20.52KAug 13, 2026
11
VECCHIARELLI GARY ANTHONY
President
<0.01%OtherProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Other / unclassified
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

1.61KAug 13, 2026
12
BEYNON ROGER PAUL
Director
<0.01%OtherProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Other / unclassified
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

7.80KJun 30, 2026
Showing 12 of 89 matching Form 4 rows. Percent of company uses current shares outstanding.

Frequently asked

Common questions.

Who are the largest CLSK shareholders?

Blackrock Inc. is the largest reported institutional holder of CLSK, with 42.33 million shares, or about 0.00% of shares outstanding.

What does the institutional filing activity show for CLSK?

CleanSpark Inc. has 10 institutional rows on file: 8 increased or initiated positions and 1 reduced them.

What insider transactions are available for CLSK?

TECHi shows 89 dated CLSK insider transactions through Sep 8, 2026, with transaction types kept separate so administrative actions are not presented as open-market trades.

Are CLSK insiders buying or selling?

The displayed CLSK activity reads Net selling: 17 sales and 0 purchases. Other transaction types remain separate.

Who is the most active reported CLSK insider?

SCHULTZ MATTHEW has the largest absolute share movement in the displayed CLSK filing rows, totaling 2.60 million shares. The action labels provide the transaction context.

All data sources

Search the dated figures used for this view. Each entry identifies its units, reporting period and calculation status.

How to use this page

Use this to check who owns the float and whether insiders are active.

Best for Institutional concentration, insider transaction pattern, and float context.

Weak when Filings are delayed or transactions are administrative rather than economic.

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