Skip to main content
TECHi home
Methodology published · Market data, model notes, and corrections process are public · Data policy · Corrections policy

NASDAQ · Technology · Holders

Aehr Test Systems (AEHR) Institutional Ownership & Insider Trading History

Top AEHR 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 29, 9:30 AM EDT · Fundamentals checked Sep 29, 8:36 AM EDT · Statements May 29, 2026

Ownership read

AEHR insider transaction activity: Net selling.

Blackrock Inc. is the largest institutional holder. 54 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

AEHR

Purchases0
Sales779.89K

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

Top holder

2.66M

Blackrock Inc.

Insider transaction activity

Net selling

$64.05M sold / $0.0000 bought

Observations shown

111

10 holder / 101 insider

Holder rows
10
Yahoo Finance · Filing dates shown per row
Increased / initiated
8
2 decreased · provider-reported changes
Insider rows
101
Yahoo Finance · Filing dates shown per row

Ownership concentration and transaction activity

Top 10 reported holders
35.11% 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: 779,888

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: 54
  • Gift: 14
  • Conversion / exercise: 7
  • Grant: 26

Top 10 institutional holders

Aehr Test Systems (AEHR) institutional ownership

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

Aehr Test Systems (AEHR) institutional ownership
#Institution% heldSharesChange %Position / filing date
1
Blackrock Inc.
8.14%2.66M+16.29%Position as of Jun 30, 2026Filing date unknown
2
Vanguard Capital Management LLC
4.04%1.32M+3.00%Position as of Jun 30, 2026Filing date unknown
3
Shaw D.E. & Co., Inc.
3.61%1.18M+244.64%Position as of Jun 30, 2026Filing date unknown
4
Two Sigma Investments, LP
3.57%1.16M+443.27%Position as of Jun 30, 2026Filing date unknown
5
FMR, LLC
3.08%1.01M-53.01%Position as of Jun 30, 2026Filing date unknown
6
Vanguard Portfolio Management LLC
2.96%966.66K+5.31%Position as of Jun 30, 2026Filing date unknown
7
Geode Capital Management, LLC
2.68%875.50K+20.64%Position as of Jun 30, 2026Filing date unknown
8
Goldman Sachs Group Inc
2.48%810.04K-35.82%Position as of Jun 30, 2026Filing date unknown
9
Jane Street Group, LLC
2.31%753.52K+171.99%Position as of Jun 30, 2026Filing date unknown
10
JPMORGAN CHASE & CO
2.24%732.55K+284.86%Position as of Jun 30, 2026Filing date unknown
Showing 10 of 10 matching institutional rows.

Recent insider transactions

Aehr Test Systems (AEHR) Form 4 filings

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

Aehr Test Systems (AEHR) Form 4 insider transactions
#Insider% companyActionSharesTransaction date
1
ROGERS VERNON
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.

5.99KAug 17, 2026
2
ENGINEER ADIL
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.

500Aug 14, 2026
3
POSEDEL RHEA J
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.

5.97KAug 14, 2026
4
SLAYEN HOWARD T
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.

5.70KAug 14, 2026
5
SALAMONE ALBERTO
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.

9.67KAug 13, 2026
6
SCOTT GEOFFREY GATES
Director
0.02%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.

6.73KAug 12, 2026
7
POSEDEL RHEA J
Director
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.

8.41KAug 12, 2026
8
ERICKSON GAYLORD
Chief Executive Officer
0.12%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.

40.00KAug 12, 2026
9
OLIPHANT LAURA
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.

1.72KAug 12, 2026
10
SCOTT GEOFFREY GATES
Director
0.06%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.

20.00KAug 12, 2026
11
ENGINEER ADIL
Chief Operating 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.

15.00KAug 12, 2026
12
ENGINEER ADIL
Chief Operating Officer
0.05%Conversion of Exercise of derivative securityProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Conversion / exercise
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.

15.00KAug 12, 2026
Showing 12 of 101 matching Form 4 rows. Percent of company uses current shares outstanding.

Frequently asked

Common questions.

Who are the largest AEHR shareholders?

Blackrock Inc. is the largest reported institutional holder of AEHR, with 2.66 million shares, or about 8.14% of shares outstanding.

What does the institutional filing activity show for AEHR?

Aehr Test Systems has 10 institutional rows on file: 8 increased or initiated positions and 2 reduced them.

What insider transactions are available for AEHR?

TECHi shows 101 dated AEHR insider transactions through Aug 17, 2026, with transaction types kept separate so administrative actions are not presented as open-market trades.

Are AEHR insiders buying or selling?

The displayed AEHR activity reads Net selling: 54 sales and 0 purchases. Other transaction types remain separate.

Who is the most active reported AEHR insider?

ERICKSON GAYLORD has the largest absolute share movement in the displayed AEHR filing rows, totaling 317,984 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.

Browse all companies and funds
Research tools
US market hours

Regular hours: 9:30 AM–4:00 PM America/New_York

Next open: Checking…

Exchange calendar includes scheduled holidays and early closes. Extended-session prices appear separately only when supplied by the quote source.