AEHR on Nasdaq

Aehr Test Systems
Logo: aehr.com4
Semiconductor manufacturing support company based in Fremont1
In its 2026 annual report the company says: “We are a leading provider of test solutions for testing, burning-in, and stabilizing semiconductor devices in wafer level, singulated die, and package level, and have installed thousands of systems worldwide. We have developed and introduced several innovative products including the FOX-P TM family of test and burn-in systems and FOX WaferPak TM Aligner, FOX WaferPak Contactor, FOX DiePak® Carrier and FOX DiePak Loader.”8 Its shares trade on Nasdaq under the symbol AEHR.1
Price unavailable
Last updated Oct 21, 2026.
Overview
Compare with FREQUENCY ELECTRONICS INC, INTEST CORP or Data I/O, or pick any stock.
- TickerAEHR on Nasdaq1
- IndustryInstruments For Meas & Testing of Electricity & Elec Signals1
- HeadquartersFremont1
- Websitewww.aehr.com
- Incorporated inCA6
- Business address400 Kato Terrace, Fremont, Ca 945396
- Filer categoryNon-accelerated filer, Smaller reporting company6
- Legal formCorporation3
- LEI529900A4GWWZFRU2RE973
- StatusActive3
- LEI statusLapsed (not renewed)3
- Registered address400 Kato Terrace, 94539 Fremont, United States3
- Registered withSecretary of State, C08173123
See how the biggest companies compare on our leaderboards
Aehr Test Systems, Inc. (“Aehr Test,” “Aehr,” or “we”) was incorporated in the state of California on May 25, 1977 and is headquartered in Fremont, California. We are a leading provider of test solutions for testing, burning-in, and stabilizing semiconductor devices in wafer level, singulated die, and package level, and have installed thousands of systems worldwide. Mission critical applications are driving increased quality, reliability, safety, and security needs of semiconductors. The applications include artificial intelligence (“AI”), High Performance Compute (“HPC”) data centers, E-mobility (electric vehicles), electric vehicle charging infrastructure, solar and wind power, data and telecommunications infrastructure, and solid-state memory storage. The trend is driving additional test requirements, incremental capacity needs, and new opportunities for Aehr Test products and solutio…8 From its latest annual report
Financials
From the company’s reports to the SEC. Every number links to the filing it came from.
Key numbers, fiscal 2026
What sells
Revenue by product, business segment and region, as the company reports it to the SEC.
Products and services
Systems brought in 57% of the revenue Aehr Test Systems broke down this way in fiscal 2026.
Products and services by year
| Products and services | 2024 | 2025 | 2026 |
|---|---|---|---|
| Systems | $24.2M | $22.0M | $28.7M |
| Contactors | $37.6M | $30.8M | $14.9M |
| Services [member] | $4.5M | $6.1M | $6.4M |
Regions
Asiia brought in 46% of the revenue Aehr Test Systems broke down this way in fiscal 2026.
Regions by year
| Regions | 2024 | 2025 | 2026 |
|---|---|---|---|
| Asiia | $58.1M | $37.1M | $22.8M |
| Uniited States | $3.5M | $17.7M | $20.6M |
| Europe and Miiddle East | $4.6M | $4.2M | $6.5M |
Where the money goes
Where each dollar of revenue went, fiscal 2026
- Cost of revenue47¢$32.4M
- Research and development18¢$12.6M
- Selling, general and admin28¢$19.2M
- Income tax7¢$4.6M
Out of $50.0M in revenue.5 The company lost money this year.
Financial statements
Every line of the income statement as filed: the last 3 fiscal years, latest first.5
| Period ending | 2026-05-31 | 2025-05-31 | 2024-05-31 |
|---|---|---|---|
| Revenue | $50.0M | $59.0M | $66.2M |
| Cost of revenue | $32.4M | $35.0M | $33.7M |
| Gross profit | $17.7M | $23.9M | $32.5M |
| Research and development | $12.6M | $10.5M | $8.7M |
| Selling, general and administrative | $19.2M | $18.3M | $13.7M |
| Restructuring charges | $6.0K | $864.0K | $0 |
| Total operating expenses | $31.8M | $29.6M | $22.5M |
| Income (loss) from operations | -$14.1M | -$5.7M | $10.1M |
| Interest income, net | $1.4M | $1.4M | $2.4M |
| Other income (expense), net | $1.1M | -$15.0K | -$8.0K |
| Income (loss) before income tax benefit | -$11.7M | -$4.3M | $12.5M |
| Income tax benefit | -$4.6M | -$381.0K | -$20.7M |
| Net income (loss) | -$7.1M | -$3.9M | $33.2M |
| Basic | -$0.23 | -$0.13 | $1.15 |
| Diluted | -$0.23 | -$0.13 | $1.12 |
| Basic | 30.7M shares | 29.6M shares | 28.8M shares |
| Diluted | 30.7M shares | 29.6M shares | 29.6M shares |
No quarter-by-quarter statement was filed.
Every line of the balance sheet as filed: the last 4 fiscal years (annual) or 4 quarters (quarterly), latest first.5
| Period ending | 2026-05-31 | 2025-05-31 | 2024-05-31 | 2023-05-31 |
|---|---|---|---|---|
| Cash and cash equivalents | $116.4M | $24.5M | ||
| Accounts receivable | $17.5M | $14.2M | ||
| Inventories | $41.4M | $42.0M | ||
| Prepaid expenses and other current assets | $9.3M | $8.1M | ||
| Total current assets | $184.4M | $88.8M | ||
| Property and equipment, net | $8.9M | $9.0M | ||
| Goodwill | $10.7M | $10.7M | ||
| Intangible assets, net | $9.6M | $10.8M | ||
| Deferred tax assets, net | $23.8M | $19.1M | ||
| Operating lease right-of-use assets, net | $8.9M | $9.6M | ||
| Other non-current assets | $305.0K | $546.0K | ||
| Total assets | $246.7M | $148.5M | ||
| Accounts payable | $6.8M | $6.7M | ||
| Accrued expenses and other current liabilities | $5.3M | $6.0M | ||
| Operating lease liabilities, short-term | $626.0K | $909.0K | ||
| Deferred revenue, short-term | $5.2M | $2.0M | ||
| Total current liabilities | $17.9M | $15.6M | ||
| Operating lease liabilities, long-term | $9.3M | $9.9M | ||
| Deferred revenue, long-term | $34.0K | $36.0K | ||
| Other long-term liabilities | $38.0K | $42.0K | ||
| Total liabilities | $27.2M | $25.6M | ||
| Preferred stock, $0.01 par value: Authorized: 10,000 shares; Issued and outstanding: none | $0 | $0 | ||
| Common stock, $0.01 par value: Authorized: 75,000 shares; Issued and outstanding: 32,480 shares and 29,877 shares at May 29, 2026 and May 30, 2025, respectively | $325.0K | $299.0K | ||
| Additional paid-in capital | $249.5M | $145.8M | ||
| Accumulated other comprehensive loss | -$105.0K | -$126.0K | -$158.0K | |
| Accumulated deficit | -$30.2M | -$23.1M | ||
| Total shareholders' equity | $219.5M | $122.9M | $111.6M | $75.6M |
| Total liabilities and shareholders equity | $246.7M | $148.5M | ||
| Preferred stock, par value | $0.01 | $0.01 | ||
| Preferred stock, shares authorized | 10.0M shares | 10.0M shares | ||
| Preferred stock, shares issued | 0 shares | 0 shares | ||
| Preferred stock, shares outstanding | 0 shares | 0 shares | ||
| Common stock, par value | $0.01 | $0.01 | ||
| Common stock, shares authorized | 75.0M shares | 75.0M shares | ||
| Common stock, shares issued | 32.5M shares | 29.9M shares | ||
| Common stock, shares outstanding | 32.5M shares | 29.9M shares |
| Period ending | 2026-05-31 | 2025-05-31 | 2024-05-31 | 2023-05-31 |
|---|---|---|---|---|
| Cash and cash equivalents | $116.4M | $24.5M | ||
| Accounts receivable | $17.5M | $14.2M | ||
| Inventories | $41.4M | $42.0M | ||
| Prepaid expenses and other current assets | $9.3M | $8.1M | ||
| Total current assets | $184.4M | $88.8M | ||
| Property and equipment, net | $8.9M | $9.0M | ||
| Goodwill | $10.7M | $10.7M | ||
| Intangible assets, net | $9.6M | $10.8M | ||
| Deferred tax assets, net | $23.8M | $19.1M | ||
| Operating lease right-of-use assets, net | $8.9M | $9.6M | ||
| Other non-current assets | $305.0K | $546.0K | ||
| Total assets | $246.7M | $148.5M | ||
| Accounts payable | $6.8M | $6.7M | ||
| Accrued expenses and other current liabilities | $5.3M | $6.0M | ||
| Operating lease liabilities, short-term | $626.0K | $909.0K | ||
| Deferred revenue, short-term | $5.2M | $2.0M | ||
| Total current liabilities | $17.9M | $15.6M | ||
| Operating lease liabilities, long-term | $9.3M | $9.9M | ||
| Deferred revenue, long-term | $34.0K | $36.0K | ||
| Other long-term liabilities | $38.0K | $42.0K | ||
| Total liabilities | $27.2M | $25.6M | ||
| Preferred stock, $0.01 par value: Authorized: 10,000 shares; Issued and outstanding: none | $0 | $0 | ||
| Common stock, $0.01 par value: Authorized: 75,000 shares; Issued and outstanding: 32,480 shares and 29,877 shares at May 29, 2026 and May 30, 2025, respectively | $325.0K | $299.0K | ||
| Additional paid-in capital | $249.5M | $145.8M | ||
| Accumulated other comprehensive loss | -$105.0K | -$126.0K | -$158.0K | |
| Accumulated deficit | -$30.2M | -$23.1M | ||
| Total shareholders' equity | $219.5M | $122.9M | $111.6M | $75.6M |
| Total liabilities and shareholders equity | $246.7M | $148.5M | ||
| Preferred stock, par value | $0.01 | $0.01 | ||
| Preferred stock, shares authorized | 10.0M shares | 10.0M shares | ||
| Preferred stock, shares issued | 0 shares | 0 shares | ||
| Preferred stock, shares outstanding | 0 shares | 0 shares | ||
| Common stock, par value | $0.01 | $0.01 | ||
| Common stock, shares authorized | 75.0M shares | 75.0M shares | ||
| Common stock, shares issued | 32.5M shares | 29.9M shares | ||
| Common stock, shares outstanding | 32.5M shares | 29.9M shares |
Cash flow is reported year to date, not quarter by quarter, so there are no separate quarterly figures.
Every line of the cash flow as filed: the last 3 fiscal years, latest first.5
| Period ending | 2026-05-31 | 2025-05-31 | 2024-05-31 |
|---|---|---|---|
| Net income (loss) | -$7.1M | -$3.9M | $33.2M |
| Stock-based compensation expense | $6.8M | $5.2M | $2.5M |
| Depreciation and amortization | $2.8M | $2.3M | $657.0K |
| Deferred income taxes | -$4.7M | -$421.0K | -$20.8M |
| Amortization of operating lease right-of-use assets | $731.0K | $1.1M | $706.0K |
| Impairment of assets | $0 | $584.0K | $0 |
| Accretion of investment discount | $0 | $0 | -$130.0K |
| Accounts receivable | -$3.3M | -$3.0M | $6.8M |
| Inventories | $11.0K | -$2.4M | -$13.7M |
| Prepaid expenses and other assets | -$2.8M | -$5.0M | -$875.0K |
| Accounts payable | $991.0K | -$714.0K | -$3.9M |
| Accrued expenses | $1.0M | -$378.0K | -$792.0K |
| Deferred revenue | $3.2M | $143.0K | -$1.5M |
| Operating lease liabilities | -$979.0K | -$699.0K | -$423.0K |
| Income taxes payable | $58.0K | -$65.0K | $14.0K |
| Net cash provided by (used in) operating activities | -$3.3M | -$7.4M | $1.8M |
| Purchases of property and equipment | -$2.1M | -$5.0M | -$749.0K |
| Proceeds from maturities of investments | $0 | $0 | $18.0M |
| Payments for business acquisition, net of cash and cash equivalent acquired | -$1.8M | -$11.1M | $0 |
| Net cash provided by (used in) investing activities | -$3.9M | -$16.1M | $17.3M |
| Proceeds from issuance of common stock from public offerings, net of issuance costs | $97.4M | $0 | -$72.0K |
| Proceeds from issuance of common stock under employee plans | $2.2M | $1.4M | $1.8M |
| Shares repurchased for tax withholdings on vesting of restricted stock units, amount | -$2.4M | -$784.0K | -$1.6M |
| Net cash provided by financing activities | $97.2M | $625.0K | $139.0K |
| Effect of exchange rate changes on cash, cash equivalents and restricted cash | -$6.0K | $13.0K | -$41.0K |
| Net increase (decrease) in cash, cash equivalents and restricted cash | $90.0M | -$22.8M | $19.1M |
| Income taxes paid | $60.0K | $100.0K | $90.0K |
| Interest paid | $0 | $0 | $0 |
| Net transfer of equipment between inventory and property and equipment | $702.0K | $458.0K | $357.0K |
| Purchases of property and equipment included in accounts payable and accrued liabilities | $0 | $1.3M | $53.0K |
| Common stock issuance costs included in accounts payable | $296.0K | $0 | $0 |
No quarter-by-quarter statement was filed.
Corporate structure
Aehr Test Systems sits at the top of its group. 5 entities, 4 countries on record. Switch between the flow chart and the network, and select any entity to see its details.
Major holders of Aehr Test Systems
- AWM Investment Company, Inc. Filed SCHEDULE 13G/A on Aehr Test Systems, latest Aug 14, 2026 (5 filings since Nov 10, 2021)
- FMR LLC Filed SCHEDULE 13G/A on Aehr Test Systems, latest Aug 6, 2026 (9 filings since Feb 9, 2022)
- JANE STREET GROUP, LLC Filed SCHEDULE 13G on Aehr Test Systems, latest Jul 29, 2026
- VANGUARD GROUP INC Filed SCHEDULE 13G/A on Aehr Test Systems, latest Mar 26, 2026 (4 filings since Feb 13, 2024)
- BAILLIE GIFFORD & CO Filed SCHEDULE 13G/A on Aehr Test Systems, latest Feb 9, 2026 (3 filings since Nov 7, 2024)
- Goldman Sachs Filed SC 13G/A on Aehr Test Systems, latest Feb 6, 2024 (2 filings since Feb 7, 2023)
- BlackRock Filed SC 13G on Aehr Test Systems, latest Jan 26, 2024
- Collaborative Holdings Management LP Filed SC 13G/A on Aehr Test Systems, latest Feb 14, 2023 (3 filings since Oct 5, 2021)
- Aehr Test Systems Fremont, California, United States
- Aehr Test Systems GmbH, incorporated in Subsidiary · Germany
- Aehr Test Systems Japan Limited, incorporated in Subsidiary · Japan
- Aehr Test Systems Philippines Inc., incorporated in Subsidiary · Philippines
- Incal Technology, Inc., incorporated in Subsidiary · California, United States
Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries listed in Exhibit 21 of annual reports filed with the SEC; major holders from Schedules 13D and 13G. Each entity in the chart links to its source.
What it owns
What Aehr Test Systems reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.
Property and equipment
| Item | Latest | A year before | Change |
|---|---|---|---|
| Machinery and equipment | $4.4M5 May 29, 2026 | $3.8M5 May 30, 2025 | +13.8% |
| Furniture and fixtures | $1.5M5 May 29, 2026 | $1.3M5 May 30, 2025 | +14.0% |
| Leasehold improvements | $6.1M5 May 29, 2026 | $6.0M5 May 30, 2025 | +1.6% |
| Construction in progress | $405.0K5 May 29, 2026 | $362.0K5 May 30, 2025 | +11.9% |
| Property and equipment, before depreciation | $15.9M5 May 29, 2026 | $14.4M5 May 30, 2025 | +10.3% |
| Accumulated depreciation | $7.0M5 May 29, 2026 | $5.5M5 May 30, 2025 | +27.6% |
| Property and equipment, net | $8.9M5 May 29, 2026 | $9.0M5 May 30, 2025 | −0.3% |
| Operating-lease assets (leased space) | $8.9M5 May 29, 2026 | $9.6M5 May 30, 2025 | −7.3% |
Investments
| Item | Latest | A year before | Change |
|---|---|---|---|
| Cash and cash equivalents | $116.4M5 May 29, 2026 | $24.5M5 May 30, 2025 | +374.4% |
Intangibles and goodwill
| Item | Latest | A year before | Change |
|---|---|---|---|
| Goodwill | $10.7M5 May 29, 2026 | $10.7M5 May 30, 2025 | 0% |
| Intangible assets, net (excluding goodwill) | $9.6M5 May 29, 2026 | $10.8M5 May 30, 2025 | −11.4% |
| Finite-lived intangibles, gross | $12.0M5 May 29, 2026 | $12.0M5 May 30, 2025 | 0% |
| Accumulated amortization | $2.4M5 May 29, 2026 | $1.2M5 May 30, 2025 | +100.8% |
| Finite-lived intangibles, net | $9.6M5 May 29, 2026 | $10.8M5 May 30, 2025 | −11.4% |
Inventory
| Item | Latest | A year before | Change |
|---|---|---|---|
| Inventory, total | $41.4M5 May 29, 2026 | $42.0M5 May 30, 2025 | −1.5% |
| Raw materials | $29.2M5 May 29, 2026 | $30.6M5 May 30, 2025 | −4.6% |
| Work in process | $11.4M5 May 29, 2026 | $9.3M5 May 30, 2025 | +23.5% |
| Finished goods | $666.0K5 May 29, 2026 | $2.1M5 May 30, 2025 | −68.1% |
Properties, in its own words
The Company’s principal administrative and production facilities are located in Fremont, California, in a 51,289 square foot building. The Company’s lease was renewed in December 2022 and expires in September 2030 with an option to extend the lease for another five years. In April 2025, it became reasonably certain that the Company would exercise the five-year lease extension option due to the remodeling of the Fremont office. The Company leases a 492 square foot sales and support office in Utting, Germany. The lease, which began February 1, 1992 and contains an automatic twelve months renewal, at rates to be determined, if no notice is given prior to six months from expiration. On November 18, 2020, the Company established a wholly owned subsidiary, Aehr Test Systems Philippines Inc., which has been in full operation since March 2021. The Company currently leases a facility in Philippines located in a 6,458 square foot building in Clark Freeport Zone, Pampanga. The lease, amended in 2023, began November 1, 2023 and expires on June 30, 2029 with an option to renew for another three or five years at the prevailing market rate. Following the acquisition of Incal, the Company inherited Incal’s office in Fremont, California, which it subsequently vacated in May 2025 after relocating employees to its principal facilities in Fremont, to consolidate the Company’s California operations. In November 2025, the Company entered into a lease termination agreement with the landlord and was released from its remaining lease obligation. The Company periodically evaluates its global operations and facilities to bring its capacity in line with demand and to provide cost-effective services for its customers. In prior years, through this process, the Company has moved from certain facilities that exceeded the capacity required to satisfy its needs. The Company believes that its existing facilities in Fremont, California are adequate to meet its current and reasonably foreseeable requirements. The Company regularly evaluates its expected future facilities requirements and believes that alternate facilities would be available if needed.
Item 2 of the 10-K filed Jul 27, 2026.8
Leadership
Who has led Aehr Test Systems, and when. Pick a name to see everywhere that person has worked.
Chief executive
Chief financial officer
Chief operating officer
- Chief executive officerGayn Erickson Jan 11, 2012 to now18
- Chief executive officerRhea J. Posedel Jul 27, 2006 to Oct 11, 201119
- ChairRhea J. Posedel Jul 27, 2006 to Jun 28, 201219
- PresidentGayn Erickson Jan 11, 2012 to now18
- PresidentKunio Sano Apr 28, 2006 to Feb 13, 202020
- Chief financial officerChris Siu Jun 7, 2023 to now21
- Chief financial officerKenneth B. Spink Sep 10, 2015 to Jul 19, 202322
- Chief financial officerRhea J. Posedel Sep 30, 2009 to Sep 30, 200923
- Chief financial officerGary L. Larson Mar 31, 2006 to Aug 17, 201524
- Chief operating officerAdil Engineer Apr 11, 2022 to now25
Board members and other officers (23)
- Executive VP of R&DDidier Wimmers Jun 12, 2025 to now26
- Executive VP of R&DAvijit K. Ray-Chaudhuri Jan 12, 2024 to Oct 29, 202427
- EVP, PPBI BUSINESSAlberto Salamone Nov 6, 2024 to now28
- VP, CONTACTOR BUSINESS UNITAlistair N. Sporck Jul 22, 2022 to now29
- VP of OperationsMichael A. Brannan Mar 19, 2020 to Jan 24, 202230
- VP OF ENGINEERINGDonald P. Richmond Ii. Apr 4, 2018 to now31
- Exe. VP. of Sales & MarketingVernon Rogers Oct 22, 2018 to now32
- V.P. OF OPERATIONSDavid Fucci Jun 10, 2014 to May 14, 202033
- VP OF WORDWIDE SALESMark D. Allison Aug 19, 2013 to Aug 20, 201834
- VP of OperationsJoel Bustos Jul 13, 2007 to Jul 2, 200935
- SecretaryMario M. Rosati Oct 31, 2007 to Apr 3, 200836
- VP, World Wide Sales & ServiceGregory M. Perkins Jan 19, 2006 to Jul 1, 201037
- VP of EngineeringDavid S. Hendrickson Mar 29, 2006 to Jul 19, 202338
- VP, Marketing and Contactor BUCarl N. Buck Mar 31, 2006 to Oct 2, 201839
- Board memberFariba Danesh May 20, 2021 to now40
- Board memberGeoffrey Gates Scott Sep 9, 2020 to now41
- Board memberLaura Oliphant Jul 23, 2019 to now42
- Board memberRhea J. Posedel Mar 19, 2013 to now43
- Board memberGayn Erickson Jan 11, 2012 to now18
- Board memberHoward T. Slayen Nov 3, 2008 to now44
- Board memberMario M. Rosati Oct 30, 2006 to Jun 12, 202345
- Board memberMukesh Patel Oct 30, 2006 to Nov 26, 201446
- Board memberWilliam W. R. Elder Oct 30, 2006 to Oct 24, 201847
Subsidiaries and ownership
Subsidiaries (Exhibit 21)
- Aehr Test Systems GmbH, incorporated in Germany7
- Aehr Test Systems Japan Limited, incorporated in Japan7
- Aehr Test Systems Philippines Inc., incorporated in Philippines7
- Incal Technology, Inc., incorporated in California7
The subsidiaries the company lists in Exhibit 21 of its annual report, as filed.
Timeline
- Jul 14, 20268-K Results of operations48
- Apr 20, 20268-K Other events49
- Apr 8, 20268-K Entered a material agreement50
- Apr 7, 20268-K Results of operations; Bylaws or fiscal year changed51
- Jan 8, 20268-K Results of operations52
- Nov 7, 20258-K Executive or director change53
- Oct 21, 20258-K Shareholder vote54
- Oct 6, 20258-K Results of operations55
- Jul 8, 20258-K Results of operations56
- Apr 8, 20258-K Results of operations57
- Feb 28, 20258-K Bylaws or fiscal year changed58
- Jan 13, 20258-K Results of operations59
- Jan 11, 2012New chief executive Gayn Erickson becomes CEO18
- Jul 27, 2006New chief executive Rhea J. Posedel becomes CEO19
Calendar
Coming up
- Nov 2, 2026 · After the closeReports results for the quarter ending Aug/2026 A year earlier it reported ($0.05) a share, on Oct 6, 2025.60
When it reported results
- Jul 14, 2026Reported quarterly or annual results48
- Apr 7, 2026Reported quarterly or annual results51
- Jan 8, 2026Reported quarterly or annual results52
- Oct 6, 2025Reported quarterly or annual results55
- Jul 8, 2025Reported quarterly or annual results56
- Apr 8, 2025Reported quarterly or annual results57
- Jan 13, 2025Reported quarterly or annual results59
- Oct 10, 2024Reported quarterly or annual results61
Upcoming dates from Nasdaq's calendar; past results from the company's 8-K filings (Item 2.02). The full markets calendar
Filings
811 filings to the SEC since October 2021: 5 annual reports, 15 quarterly reports, 48 major events, 605 insider forms, 28 large holders, 110 other. The latest 20:
- Oct 13, 20264 PRIMARY DOCUMENT EDGAR
- Oct 13, 20264 PRIMARY DOCUMENT EDGAR
- Oct 13, 20264 PRIMARY DOCUMENT EDGAR
- Oct 13, 20264 PRIMARY DOCUMENT EDGAR
- Oct 13, 20264 PRIMARY DOCUMENT EDGAR
- Oct 13, 20264 PRIMARY DOCUMENT EDGAR
- Oct 5, 20264 PRIMARY DOCUMENT EDGAR
- Oct 5, 20264 PRIMARY DOCUMENT EDGAR
- Oct 5, 20264 PRIMARY DOCUMENT EDGAR
- Oct 5, 20264 PRIMARY DOCUMENT EDGAR
- Oct 5, 20264 PRIMARY DOCUMENT EDGAR
- Oct 5, 20264 PRIMARY DOCUMENT EDGAR
- Oct 5, 20264 PRIMARY DOCUMENT EDGAR
- Oct 2, 20264 PRIMARY DOCUMENT EDGAR
- Oct 2, 20264 PRIMARY DOCUMENT EDGAR
- Oct 2, 20264 PRIMARY DOCUMENT EDGAR
- Oct 2, 20264 PRIMARY DOCUMENT EDGAR
- Oct 2, 20264 PRIMARY DOCUMENT EDGAR
- Oct 2, 20264 PRIMARY DOCUMENT EDGAR
- Oct 2, 20264 PRIMARY DOCUMENT EDGAR
The 811 filings since October 2021 can be filtered by form type and year here when JavaScript is on.
Every filing from the last five years, summarized. The full record is on SEC EDGAR.
Insider trades
168 open-market trades by officers, directors and large owners since October 2021: 5 buys and 163 sales. Grants, option exercises and gifts are left out.
| Date | Who | Trade | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|
| Aug 17, 2026 | ROGERS VERNONExec VP of Sales & Mktg. | Sale | 3,994 | $143.77 | $574.2K | Form 4 |
| Aug 14, 2026 | ROGERS VERNONExec VP of Sales & Mktg. | Sale | 2,000 | $136.50 | $273.0K | Form 4 |
| Aug 14, 2026 | SLAYEN HOWARD TDirector | Sale | 5,700 | $133.03 | $758.3K | Form 4 |
| Aug 14, 2026 | POSEDEL RHEA JDirector | Sale | 5,973 | $140.00 | $836.2K | Form 4 |
| Aug 13, 2026 | SALAMONE ALBERTOEVP, PPBI BUSINESS | Sale | 9,672 | $127.72 | $1.2M | Form 4 |
| Aug 12, 2026 | Erickson GaynPresident and CEO | Sale | 40,000 | $130.85 | $5.2M | Form 4 |
| Aug 12, 2026 | POSEDEL RHEA JDirector | Sale | 8,413 | $130.00 | $1.1M | Form 4 |
| Aug 12, 2026 | SCOTT GEOFFREY GATESDirector | Sale | 20,000 | $131.51 | $2.6M | Form 4 |
| Aug 12, 2026 | ENGINEER ADILChief Operating Officer | Sale | 15,000 | $131.03 | $2.0M | Form 4 |
| Aug 12, 2026 | OLIPHANT LAURADirector | Sale | 1,717 | $133.00 | $228.4K | Form 4 |
| Aug 10, 2026 | SPORCK ALISTAIR NVP Contactor Business Unit | Sale | 1,000 | $108.49 | $108.5K | Form 4 |
| Aug 4, 2026 | SPORCK ALISTAIR NVP Contactor Business Unit | Sale | 2,000 | $100.96 | $201.9K | Form 4 |
| Aug 4, 2026 | SLAYEN HOWARD TDirector | Sale | 20,000 | $108.30 | $2.2M | Form 4 |
| Jul 16, 2026 | SCOTT GEOFFREY GATESDirector | Sale | 20,000 | $82.13 | $1.6M | Form 4 |
| May 14, 2026 | Siu ChrisCFO | Sale | 2,070 | $107.06 | $221.6K | Form 4 |
| May 13, 2026 | SLAYEN HOWARD TDirector | Sale | 6,819 | $104.73 | $714.2K | Form 4 |
| Apr 22, 2026 | POSEDEL RHEA JDirector | Sale | 17,719 | $99.83 | $1.8M | Form 4 |
| Apr 22, 2026 | SPORCK ALISTAIR NVP Contactor Business Unit | Sale | 2,000 | $93.50 | $187.0K | Form 4 |
| Apr 21, 2026 | SALAMONE ALBERTOEVP, PPBI BUSINESS | Sale | 15,000 | $94.56 | $1.4M | Form 4 |
| Apr 21, 2026 | SCOTT GEOFFREY GATESDirector | Sale | 60,000 | $94.33 | $5.7M | Form 4 |
All 168 trades can be filtered by person here when JavaScript is on.
From Forms 4 filed with the SEC.
Major holders
Investors who own more than 5% of the shares must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively.
- AWM Investment Company, Inc.SCHEDULE 13G/A, 5 filings Nov 10, 2021 to Aug 14, 202662
- FMR LLCSCHEDULE 13G/A, 9 filings Feb 9, 2022 to Aug 6, 202663
- JANE STREET GROUP, LLCSCHEDULE 13G, 1 filing Jul 29, 202664
- VANGUARD GROUP INCSCHEDULE 13G/A, 4 filings Feb 13, 2024 to Mar 26, 202665
- BAILLIE GIFFORD & COSCHEDULE 13G/A, 3 filings Nov 7, 2024 to Feb 9, 202666
- Goldman SachsSC 13G/A, 2 filings Feb 7, 2023 to Feb 6, 202467
- BlackRockSC 13G, 1 filing Jan 26, 202468
- Collaborative Holdings Management LPSC 13G/A, 3 filings Oct 5, 2021 to Feb 14, 202369
Executive pay
What the company paid its top executives, from the summary compensation table in its proxy statement. Total pay includes salary, bonus, stock and option awards and other pay, as the company valued them.
| Year | Executive | Age | Salary | Total pay |
|---|---|---|---|---|
| 2026 | Gayn Erickson | 61 | $474.0K | $3.2M70 |
| 2026 | Chris P. Siu | 55 | $349.5K | $1.3M70 |
| 2026 | Alberto Salamone | 53 | $240.0K | $1.1M70 |
| 2025 | President and Chief Executive Officer | $473.7K | $3.4M70 | |
| 2025 | Executive Vice President of FinanceChief Financial Officer | $349.2K | $1.4M70 |
Held by these funds
The largest holders among investment managers' 13F reports for the quarter ending Jun 30, 2026, the top 25 of 100. Change is in shares since the quarter before.
| Fund | Shares | Value | Share of the fund | Change |
|---|---|---|---|---|
| BlackRock, Inc. | 2,659,542 | $255.5M | 0.0% | +372,643 |
| Vanguard Capital Management LLC | 1,320,350 | $126.8M | 0.0% | +38,493 |
| D. E. Shaw & Co., Inc. | 1,177,421 | $113.1M | 0.1% | +835,783 |
| Two Sigma Investments, LP | 1,164,614 | $111.9M | 0.1% | +950,242 |
| Fmr LLC | 1,006,830 | $96.7M | 0.0% | −1,135,809 |
| Vanguard Portfolio Management LLC | 966,659 | $92.9M | 0.0% | +48,783 |
| Geode Capital Management, LLC | 875,505 | $84.1M | 0.0% | +149,794 |
| Goldman Sachs Group Inc | 810,036 | $77.8M | 0.0% | −452,007 |
| Jane Street Group, LLC | 753,523 | $72.4M | 0.0% | +476,478 |
| Jpmorgan Chase & Co | 732,547 | $69.6M | 0.0% | +542,208 |
| State Street Corp | 712,926 | $68.5M | 0.0% | +89,620 |
| Connor, Clark & Lunn Investment Management Ltd. | 670,758 | $64.4M | 0.1% | +451,949 |
| Morgan Stanley | 480,400 | $46.1M | 0.0% | +314,727 |
| Next Century Growth Investors LLC | 410,731 | $39.5M | 2.1% | −344,006 |
| Citadel Advisors LLC | 400,732 | $38.5M | 0.0% | +259,441 |
| Marshall Wace, Llp | 382,738 | $36.8M | 0.0% | +372,527 |
| AWM Investment Company, Inc. | 374,808 | $36.0M | 3.1% | −1,219,163 |
| Invesco Ltd. | 296,226 | $28.5M | 0.0% | +10,501 |
| Northern Trust Corp | 277,020 | $26.6M | 0.0% | +24,862 |
| Charles Schwab Investment Management Inc | 249,512 | $24.0M | 0.0% | +13,973 |
| Science & Technology Partners, L.P. | 249,000 | $23.9M | 4.0% | New |
| Wellington Management Group Llp | 238,453 | $22.9M | 0.0% | +85,568 |
| Driehaus Capital Management LLC | 238,422 | $22.9M | 0.1% | New |
| Vanguard Fiduciary Trust Co | 212,881 | $20.4M | 0.0% | +15,715 |
| Tudor Investment Corp Et Al | 204,550 | $19.6M | 0.1% | +156,357 |
13F reports cover disclosed long positions in U.S. stocks only.
SEC filer profile
How Aehr Test Systems is registered with the Securities and Exchange Commission, from its EDGAR record and the cover page of its latest annual report.
- Name on EDGARAEHR TEST SYSTEMS2
- CIK0001040470
- Employer ID (EIN)94-24240848
- Filer statusNon-accelerated filer not an emerging growth company; a smaller reporting company; not a shell company8
- Incorporated inCalifornia8
- Fiscal year endsDecember 312
- Industry code (SIC)3825 Instruments For Meas & Testing of Electricity & Elec Signals2
- SEC reviewing officeOffice of Industrial Applications and Services, Division of Corporation Finance2
- Business address400 Kato Terrace, Fremont, CA 945392
- Phone51062394002
- Shares outstanding32,620,450 shares as of Jul 20, 20268
- Public float$671.4M as of Nov 28, 20258
- AuditorBPM LLP, San Jose, California PCAOB ID 207; no auditor attestation of internal control over financial reporting8
- On EDGAR sinceJun 11, 19972
- Filings2,125 in all: 4 (1,384), 8-K (213), 10-Q (87), 144 (85), SC 13G/A (72), SC 13G (40), 4/A (30), DEF 14A (30)2
All 39 form types
10-K (29), 3 (21), S-8 (18), ARS (15), SC 13D/A (13), UPLOAD (12), SCHEDULE 13G/A (9), CORRESP (8), 424B5 (6), SC 13D (6), 8-K/A (5), EFFECT (5), S-3 (5), D (4), 10-K/A (3), 10-Q/A (3), 5 (3), S-1/A (3), SCHEDULE 13G (3), 144/A (2), 3/A (1), 424B3 (1), 8-A12G (1), 8-A12G/A (1), D/A (1), DEFA14A (1), NT 10-K (1), PRE 14A (1), S-1 (1), S-1MEF (1), S-3ASR (1)
- Latest filingsAnnual report (10-K) Jul 27, 2026
Quarterly report (10-Q) Apr 8, 2026
Proxy statement (DEF 14A) Sep 9, 2026
Latest 8-K (8-K) Jul 14, 2026
Securities registered for trading
| Class | Symbol | Exchange |
|---|---|---|
| Common Stock, par value $0.01 per share | AEHR | NASDAQ |
From the cover page of the 10-K filed Jul 27, 2026 (Section 12(b) of the Exchange Act).8
Risk factors and legal proceedings
The risks Aehr Test Systems names in Item 1A of its 10-K filed Jul 27, 2026: 29 risks under these headings, as written.8
- Risks Related to Our Business and Industry
- We generate a large portion of our sales from a small number of customers. If we were to lose one or more of our large customers, operating results could suffer dramatically.
- A substantial portion of our net sales is generated by relatively small-volume, high-value transactions.
- The semiconductor equipment industry is intensely competitive. In each of the markets we serve, we face competition from established competitors and potential new entrants, many of which have greater financial, engineering, manufacturing and marketing resources than us.
- We rely on increasing market acceptance for our FOX and Sonoma systems, and we may not be successful in attracting new customers or maintaining our existing customers.
- We may experience increased costs associated with new product introductions.
- Our industry is subject to rapid technological change, and our ability to remain competitive and enter new markets depends on our ability to introduce new products in a timely manner.
- We are exposed to cybersecurity threats or incidents.
- A decrease in customer device failure rates and future changes in semiconductor technologies may result in a decrease in demand for our products.
- If we fail to operate our business in accordance with our business plan, our operating results, business and stock price may be significantly and adversely impacted.
- We are exposed to risks related to our commercial terms and conditions, including our indemnification of third parties, as well as the performance of our products.
- We may not be able to successfully integrate and manage acquired businesses.
The other 18 risks
- We are exposed to risks related to the use of artificial intelligence by us and our competitors.
- Operational and Other Risks
- We purchase materials from suppliers worldwide, which subjects the Company to increased supply chain, trade policy, and foreign sourcing risks that could adversely affect our business.
- Changes in U.S. tariff policies, retaliatory trade measures taken by other countries and resulting trade wars may have a material adverse impact on our results of operations.
- Supply chain issues, including a shortage of critical components or contract manufacturing capacity, could result in a delay in fulfillment of customer orders, or an increase in costs, resulting in an adverse impact on our business and operating results.
- We sell our products and services worldwide, and our business is subject to risks inherent in conducting business activities in geographic regions outside of the United States.
- Global unrest may impact our ability to sell our products or obtain critical materials.
- Our dependence on subcontractors and sole-source suppliers may prevent us from delivering our products on a timely basis and expose us to intellectual property infringement.
- Tightening of fiscal monetary policy, and periodic economic and semiconductor industry downturns could negatively affect our business, results of operations and financial condition.
- Our net sales are affected by the cyclicality of the semiconductor market, which may have a material adverse impact on our business performance and financial condition.
- We have been and may in the future be subject to litigation relating to intellectual property infringement which would be time-consuming, expensive and a distraction from our business.
- We cannot assure that we have complied with all applicable environmental laws, and our failure to do so could adversely affect our business as a result of having to pay substantial amounts in damages or fees.
- The failure to successfully implement enterprise resource planning and other information systems changes could adversely impact our business and operating results.
- Risks Related to Ownership of Our Common Stock
- Our stock price is volatile.
- We are exposed to risks associated with shareholder class action lawsuits, which are expensive and could divert management attention.
- Risks Related to our Financial/Legal/Organizational Structure
- We depend on our key personnel and our success depends on our ability to attract, retain and motivate talented employees.
- If we fail to maintain effective internal control over financial reporting in the future, the accuracy and timing of our financial reporting may be adversely affected.
- Compliance with federal securities laws, rules and regulations, as well as NASDAQ requirements, has become increasingly complex, and the significant attention and expense we must devote to those areas may have an adverse impact on our business.
- A change in accounting standards or practices or a change in existing taxation rules or practices (or changes in interpretations of such standards, practices or rules) could have a significant effect on our reported results and may affect reporting of transactions completed before the change is effective.
Legal proceedings
From time to time, we are subject to various claims and legal proceedings that arise in the ordinary course of business. We accrue for losses related to litigation when a potential loss is probable and the loss can be reasonably estimated. For additional information regarding legal proceedings, refer to Note 9 – Commitments and Contingencies in the Notes to Consolidated Financial Statements.
The opening of Item 3, Legal Proceedings.8
Links
- Websitewww.aehr.com1
- LinkedInwww.linkedin.com/company/aehr-test-systems1
- WikidataQ124224170
- SEC EDGARCIK 1040470
Sources
The numbers on this page point here. Each one links to the record it came from.
- 1WikidataAehr Test Systems on Wikidata
- 2
- 3
- 4Company websiteAehr Test Systems logo
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20SEC EDGARKunio Sano, President
- 21SEC EDGARChris Siu, Chief financial officer
- 22
- 23
- 24
- 25
- 26SEC EDGARDidier Wimmers, Executive VP of R&D
- 27
- 28SEC EDGARAlberto Salamone, EVP, PPBI BUSINESS
- 29
- 30SEC EDGARMichael A. Brannan, VP of Operations
- 31
- 32
- 33SEC EDGARDavid Fucci, V.P. OF OPERATIONS
- 34
- 35SEC EDGARJoel Bustos, VP of Operations
- 36SEC EDGARMario M. Rosati, Secretary
- 37
- 38
- 39
- 40SEC EDGARFariba Danesh, Board member
- 41SEC EDGARGeoffrey Gates Scott, Board member
- 42SEC EDGARLaura Oliphant, Board member
- 43SEC EDGARRhea J. Posedel, Board member
- 44SEC EDGARHoward T. Slayen, Board member
- 45SEC EDGARMario M. Rosati, Board member
- 46SEC EDGARMukesh Patel, Board member
- 47SEC EDGARWilliam W. R. Elder, Board member
- 48SEC EDGARResults of operations
- 49SEC EDGAROther events
- 50SEC EDGAREntered a material agreement
- 51
- 52SEC EDGARResults of operations
- 53SEC EDGARExecutive or director change
- 54SEC EDGARShareholder vote
- 55SEC EDGARResults of operations
- 56SEC EDGARResults of operations
- 57SEC EDGARResults of operations
- 58SEC EDGARBylaws or fiscal year changed
- 59SEC EDGARResults of operations
- 60NasdaqNasdaq calendar
- 61
- 62
- 63
- 64
- 65
- 66
- 67
- 68
- 69
- 70