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NASDAQ · Financial Services · Holders

Riot Platforms (RIOT) Institutional Ownership & Insider Trading History

Top RIOT 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, 9:28 AM EDT · Statements Jun 30, 2026

Ownership read

RIOT insider transaction activity: Mixed, sale-heavy.

Blackrock Inc. is the largest institutional holder. 18 sales and 1 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

RIOT

Purchases8.38K
Sales1.26M

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

Top holder

31.98M

Blackrock Inc.

Insider transaction activity

Mixed, sale-heavy

$23.61M sold / $64.89K bought

Observations shown

57

10 holder / 47 insider

Holder rows
10
Yahoo Finance · Filing dates shown per row
Increased / initiated
8
2 decreased · provider-reported changes
Insider rows
47
Yahoo Finance · Filing dates shown per row

Ownership concentration and transaction activity

Top 10 reported holders
42.18% 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: 1,255,963

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.

  • Gift: 1
  • Purchase / sale; plan unknown: 19
  • Grant: 23
  • Other / unclassified: 4

Top 10 institutional holders

Riot Platforms (RIOT) institutional ownership

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

Riot Platforms (RIOT) institutional ownership
#Institution% heldSharesChange %Position / filing date
1
Blackrock Inc.
8.52%31.98M+7.86%Position as of Jun 30, 2026Filing date unknown
2
Vanguard Portfolio Management LLC
5.79%21.73M+0.18%Position as of Jun 30, 2026Filing date unknown
3
FMR, LLC
5.24%19.65M+30.84%Position as of Jun 30, 2026Filing date unknown
4
Situational Awareness LP
4.56%17.10M+48.67%Position as of Jun 30, 2026Filing date unknown
5
Jane Street Group, LLC
4.48%16.83M+127.81%Position as of Jun 30, 2026Filing date unknown
6
Vanguard Capital Management LLC
4.04%15.15M+1.89%Position as of Jun 30, 2026Filing date unknown
7
Starboard Value LP
2.70%10.11M-34.93%Position as of Jun 30, 2026Filing date unknown
8
State Street Corporation
2.52%9.44M+2.71%Position as of Jun 30, 2026Filing date unknown
9
Geode Capital Management, LLC
2.47%9.28M+3.47%Position as of Jun 30, 2026Filing date unknown
10
Dimensional Fund Advisors LP
1.86%6.99M-0.41%Position as of Jun 30, 2026Filing date unknown
Showing 10 of 10 matching institutional rows.

Recent insider transactions

Riot Platforms (RIOT) Form 4 filings

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

Riot Platforms (RIOT) Form 4 insider transactions
#Insider% companyActionSharesTransaction date
1
HOWELL STEPHEN MITCHELL JR
Chief Operating Officer
<0.01%Stock GiftProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Gift
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.

21.20KAug 12, 2026
2
WERNER RYAN D.
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.

47.73KAug 5, 2026
3
WERNER RYAN D.
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.

17.83KJul 7, 2026
4
D'AMBROSIO LANCE VARRO
Director
<0.01%Stock Award(Grant)Provider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Grant
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.

8.35KJul 1, 2026
5
LEVERTON JAIME MARGOT JENNIE
Director
<0.01%Stock Award(Grant)Provider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Grant
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.

8.35KJul 1, 2026
6
TURNER MICHAEL JOHN
Director
<0.01%Stock Award(Grant)Provider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Grant
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.

8.35KJul 1, 2026
7
MOUTON DOUGLAS
Director
<0.01%Stock Award(Grant)Provider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Grant
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.

8.35KJul 1, 2026
8
YEE COLIN M.
Affiliated Person
0.03%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.

124.82KJul 1, 2026
9
WERNER RYAN D.
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.

25.38KJun 22, 2026
10
LES JASON
Chief Executive Officer
0.02%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.

62.70KJun 22, 2026
11
WERNER RYAN D.
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.

37.62KMay 27, 2026
12
LES JASON
Chief Executive Officer
0.05%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.

175.00KMay 11, 2026
Showing 12 of 47 matching Form 4 rows. Percent of company uses current shares outstanding.

Frequently asked

Common questions.

Who are the largest RIOT shareholders?

Blackrock Inc. is the largest reported institutional holder of RIOT, with 31.98 million shares, or about 8.52% of shares outstanding.

What does the institutional filing activity show for RIOT?

Riot Platforms has 10 institutional rows on file: 8 increased or initiated positions and 2 reduced them.

What insider transactions are available for RIOT?

TECHi shows 47 dated RIOT insider transactions through Aug 12, 2026, with transaction types kept separate so administrative actions are not presented as open-market trades.

Are RIOT insiders buying or selling?

The displayed RIOT activity reads Mixed, sale-heavy: 18 sales and 1 purchases. Other transaction types remain separate.

Who is the most active reported RIOT insider?

LES JASON has the largest absolute share movement in the displayed RIOT filing rows, totaling 1.96 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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