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NASDAQ · Technology · Holders

Cerebras Systems (CBRS) Institutional Ownership & Insider Trading History

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

Section freshness

Statements Jun 30, 2026

Ownership read

CBRS insider transaction activity: Net selling.

Eclipse Operations, LLC is the largest institutional holder. 18 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

CBRS

Purchases0
Sales1.43M

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

Top holder

11.45M

Eclipse Operations, LLC

Insider transaction activity

Net selling

$295.59M sold / $0.0000 bought

Observations shown

60

10 holder / 50 insider

Holder rows
10
Yahoo Finance · Filing dates shown per row
Increased / initiated
10
0 decreased · provider-reported changes
Insider rows
50
Yahoo Finance · Filing dates shown per row

Ownership concentration and transaction activity

Top 10 reported holders
46.85% 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: 1,432,179

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: 3
  • Purchase / sale; plan unknown: 18
  • Other / unclassified: 24
  • Grant: 1
  • Conversion / exercise: 4

Top 10 institutional holders

Cerebras Systems (CBRS) institutional ownership

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

Cerebras Systems (CBRS) institutional ownership
#Institution% heldSharesChange %Position / filing date
1
Eclipse Operations, LLC
10.2%11.45M+100.00%Position as of Jun 30, 2026Filing date unknown
2
FMR, LLC
7.51%8.44M+100.00%Position as of Jun 30, 2026Filing date unknown
3
Altimeter Capital Management, LP
6.44%7.23M+100.00%Position as of Jun 30, 2026Filing date unknown
4
Coatue Management LLC
6.25%7.01M+100.00%Position as of Jun 30, 2026Filing date unknown
5
Capital World Investors
3.47%3.89M+100.00%Position as of Jun 30, 2026Filing date unknown
6
Morgan Stanley
2.87%3.22M+100.00%Position as of Jun 30, 2026Filing date unknown
7
Atreides Management, LP
2.77%3.11M+100.00%Position as of Jun 30, 2026Filing date unknown
8
JPMORGAN CHASE & CO
2.76%3.10M+100.00%Position as of Jun 30, 2026Filing date unknown
9
Tiger Global Management, LLC
2.67%3.00M+100.00%Position as of Jun 30, 2026Filing date unknown
10
Vy Capital Management Co. Ltd.
1.91%2.15M+100.00%Position as of Jun 30, 2026Filing date unknown
Showing 10 of 10 matching institutional rows.

Recent insider transactions

Cerebras Systems (CBRS) Form 4 filings

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

Cerebras Systems (CBRS) Form 4 insider transactions
#Insider% companyActionSharesTransaction date
1
LIE SEAN
Chief Technology 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.

16.04KSep 4, 2026
2
LIE SEAN
Chief Technology 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.

53.46KSep 4, 2026
3
LIE SEAN
Chief Technology Officer
0.04%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.

46.14KSep 4, 2026
4
FELDMAN ANDREW D
Chief Executive Officer
0.03%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.

37.44KSep 4, 2026
5
FELDMAN ANDREW D
Chief Executive Officer
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.

37.44KSep 4, 2026
6
VASSALLO STEVEN
Director
0.04%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.

50.00KSep 4, 2026
7
BENCHMARK CAPITAL MANAGEMENT CO. VIII, L.L.C.
Beneficial Owner of more than 10% of a Class of Security
0.86%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.

963.82KAug 24, 2026
8
LIE SEAN
Chief Technology Officer
0.65%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.

726.54KAug 21, 2026
9
LIE SEAN
Chief Technology Officer
0.64%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.

713.09KAug 21, 2026
10
FELDMAN ANDREW D
Chief Executive Officer
0.04%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.

50.00KAug 21, 2026
11
FELDMAN ANDREW D
Chief Executive Officer
0.21%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.

237.56KAug 21, 2026
12
FELDMAN ANDREW D
Chief Executive Officer
0.21%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.

237.56KAug 21, 2026
Showing 12 of 50 matching Form 4 rows. Percent of company uses current shares outstanding.

Frequently asked

Common questions.

Who are the largest CBRS shareholders?

Eclipse Operations, LLC is the largest reported institutional holder of CBRS, with 11.45 million shares, or about 10.20% of shares outstanding.

What does the institutional filing activity show for CBRS?

Cerebras Systems has 10 institutional rows on file: 10 increased or initiated positions and 0 reduced them.

What insider transactions are available for CBRS?

TECHi shows 50 dated CBRS insider transactions through Sep 4, 2026, with transaction types kept separate so administrative actions are not presented as open-market trades.

Are CBRS insiders buying or selling?

The displayed CBRS activity reads Net selling: 18 sales and 0 purchases. Other transaction types remain separate.

Who is the most active reported CBRS insider?

BENCHMARK CAPITAL MANAGEMENT CO. VIII, L.L.C. has the largest absolute share movement in the displayed CBRS filing rows, totaling 19.91 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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