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NASDAQ · Technology · Holders

Astera Labs (ALAB) Institutional Ownership & Insider Trading History

Top ALAB 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, 6:22 AM EDT · Statements Jun 30, 2026

Ownership read

ALAB insider transaction activity: Net selling.

FMR, LLC is the largest institutional holder. 86 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

ALAB

Purchases0
Sales7.02M

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

Top holder

24.85M

FMR, LLC

Insider transaction activity

Net selling

$1.2B sold / $0.0000 bought

Observations shown

130

10 holder / 120 insider

Holder rows
10
Yahoo Finance · Filing dates shown per row
Increased / initiated
9
1 decreased · provider-reported changes
Insider rows
120
Yahoo Finance · Filing dates shown per row

Ownership concentration and transaction activity

Top 10 reported holders
41.15% 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: 7,024,408

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: 86
  • Grant: 23
  • Gift: 11

Top 10 institutional holders

Astera Labs (ALAB) institutional ownership

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

Astera Labs (ALAB) institutional ownership
#Institution% heldSharesChange %Position / filing date
1
FMR, LLC
14.3%24.85M-2.68%Position as of Jun 30, 2026Filing date unknown
2
Blackrock Inc.
7.89%13.68M+19.51%Position as of Jun 30, 2026Filing date unknown
3
Vanguard Portfolio Management LLC
4.55%7.89M+7.91%Position as of Jun 30, 2026Filing date unknown
4
Vanguard Capital Management LLC
3.88%6.73M+6.09%Position as of Jun 30, 2026Filing date unknown
5
Invesco Ltd.
2.83%4.91M+1226.53%Position as of Jun 30, 2026Filing date unknown
6
State Street Corporation
2.12%3.68M+10.33%Position as of Jun 30, 2026Filing date unknown
7
Geode Capital Management, LLC
1.61%2.80M+11.48%Position as of Jun 30, 2026Filing date unknown
8
Price (T.Rowe) Associates Inc
1.39%2.41M+289.60%Position as of Jun 30, 2026Filing date unknown
9
Van Eck Associates Corporation
1.29%2.24M+20.04%Position as of Jun 30, 2026Filing date unknown
10
Bank of America Corporation
1.27%2.20M+22.93%Position as of Jun 30, 2026Filing date unknown
Showing 10 of 10 matching institutional rows.

Recent insider transactions

Astera Labs (ALAB) Form 4 filings

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

Astera Labs (ALAB) Form 4 insider transactions
#Insider% companyActionSharesTransaction date
1
DYCKERHOFF STEFAN A
Director
<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.

12.50KSep 2, 2026
2
ALBA MANUEL
Director
0.11%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.

183.00KSep 1, 2026
3
MAZZARA PHILIP
General Counsel
<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.

6.80KAug 17, 2026
4
MOHAN JITENDRA
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.

90.63KAug 17, 2026
5
GAJENDRA SANJAY
President
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.

90.63KAug 17, 2026
6
DYCKERHOFF STEFAN A
Director
<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.

12.50KAug 6, 2026
7
COTA GERMAINE
Officer
<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.

1.45KJul 20, 2026
8
ALBA MANUEL
Director
0.08%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.

136.97KJul 1, 2026
9
ALBA MANUEL
Director
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.

37.53KJul 1, 2026
10
ALBA MANUEL
Director
<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.

8.49KJul 1, 2026
11
DYCKERHOFF STEFAN A
Director
<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.

12.50KJul 1, 2026
12
MAYER BETHANY J
Director
<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.

686Jun 24, 2026
Showing 12 of 120 matching Form 4 rows. Percent of company uses current shares outstanding.

Frequently asked

Common questions.

Who are the largest ALAB shareholders?

FMR, LLC is the largest reported institutional holder of ALAB, with 24.85 million shares, or about 14.32% of shares outstanding.

What does the institutional filing activity show for ALAB?

Astera Labs has 10 institutional rows on file: 9 increased or initiated positions and 1 reduced them.

What insider transactions are available for ALAB?

TECHi shows 120 dated ALAB insider transactions through Sep 2, 2026, with transaction types kept separate so administrative actions are not presented as open-market trades.

Are ALAB insiders buying or selling?

The displayed ALAB activity reads Net selling: 86 sales and 0 purchases. Other transaction types remain separate.

Who is the most active reported ALAB insider?

GAJENDRA SANJAY has the largest absolute share movement in the displayed ALAB filing rows, totaling 3.32 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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