Aehr Test Systems Q4 2025 Earnings Report

Aehr Test Systems EPS Results

• Actual EPS: -$0.01
• Consensus EPS: -$0.02
• Beat/Miss: Beat by +$0.01
• One Year Ago EPS: N/A

Aehr Test Systems Revenue Results

• Actual Revenue: $14,100.00 billion
• Expected Revenue: $14.83 million
• Beat/Miss: Beat by +$14,099.99 billion
• YoY Revenue Growth: N/A

Aehr Test Systems Announcement Details

• Quarter: Q4 2025
• Date: 7/8/2025
• Time: After Market Closes
• Conference Call Date: Tuesday, July 8, 2025
• Conference Call Time: 5:00PM ET

Aehr Test Systems (NASDAQ:AEHR) provides test solutions for testing, burning-in, and semiconductor devices in wafer level, singulated die, and package part form, and installed systems worldwide. Its product portfolio includes FOX-XP and FOX-NP systems that are full wafer contact and singulated die/module test and burn-in systems that can test, burn-in, and stabilize range of devices, including silicon carbide-based and other power semiconductors, 2D and 3D sensors used in mobile phones, tablets and other computing devices, memory semiconductors, processors, microcontrollers, systems-on-a-chip, and photonics and integrated optical devices. The company also offers FOX-CP system, a low-cost single-wafer compact test solution for logic, memory, and photonic devices; FOX WaferPak Contactor, a full wafer contactor capable of testing wafers up to 300mm that enables integrated circuit manufacturers to perform test, burn-in, and stabilization of full wafers on the FOX-P systems. In addition, it provides FOX DiePak Carrier, a reusable temporary package that enables IC manufacturers to perform final test and burn-in of bare die and modules; and FOX DiePak Loader. The company was incorporated in 1977 and is headquartered in Fremont, California.

Aehr Test Systems Q4 2025 Earnings Call Transcript

Key Takeaways

• Positive Sentiment: Completed development and shipment of the first ever wafer level burn-in system for AI processors, driving AI processor testing revenue to over 35% of total compared to 0% last year.
• Positive Sentiment: Full-year bookings grew 24% year-over-year to $61.1 million and backlog reached $16.3 million, reflecting strong demand across multiple markets.
• Negative Sentiment: Fiscal 2025 revenue declined 11% year-over-year to $59 million and non-GAAP gross margin fell to 44% from 49.6%, while non-GAAP net income dropped sharply due to lower revenue and mix shifts.
• Neutral Sentiment: The InCal acquisition integration was completed, consolidating operations in Fremont, closing the InCal facility and targeting over $800,000 in annual facility cost savings.
• Negative Sentiment: Management withdrew fiscal 2026 financial guidance amid U.S. tariff uncertainties, citing potential delays or pauses in customer orders and supply chain shipments.

Presentation

[Operator]

Greetings. Welcome to the Aerotest Systems Fiscal twenty twenty five Fourth Quarter and Full Year Conference Call. At this time, all participants are in a listen only mode. A question and answer session will follow the formal presentation. Please note this conference is being recorded.

[Operator]

I will now turn the conference over to your host, Jim Byers of Pondell Wilkinson, Investor Relations. You may begin.

[Jim Byers, Director at PondelWilkinson Inc.]

Systems fiscal twenty twenty five fourth quarter and full year financial results Conference Call. On today's call are Aortest Systems' President and CEO, Gane Erickson and CFO, Chris Siu. Before I turn the call over to Gane and Chris, I'd like to cover a few quick items. This afternoon, right after market close, Aehr Test issued a press release announcing its fiscal twenty twenty five fourth quarter and full year results. That release is available on the company's website at air.com.

[Jim Byers, Director at PondelWilkinson Inc.]

This call is being broadcast live over the Internet for all interested parties, and the webcast will be archived on the Investor Relations page of the company's website. I'd like to remind everyone that on today's call, management will be making forward looking statements that are based on current information and estimates and are subject to a number of risks and uncertainties that could cause actual results to differ materially from those in the forward looking statements. These factors are discussed in the company's most recent periodic and current reports filed with the SEC. These forward looking statements are only valid as of this date, and Airtest Systems undertakes no obligation to update the forward looking statements. And with that, I'd like to turn the conference call over to Gayn Erickson, President and CEO.

[Gayn Erickson, President & CEO at Aehr Test Systems]

Thanks, Jim. Good afternoon, everyone. Thank you for joining us on Airtest Systems' fiscal 'twenty five fourth quarter full year earnings conference call. Before we begin, I'd like to thank our customers, employees and partners for their dedication throughout this transformative year of execution, expansion and strategic diversification for Eyre in fiscal twenty twenty five. I'll start with an update on the primary markets Eyre is targeting for semiconductor testing and burn in as well as the significant progress we've made in this year in new markets.

[Gayn Erickson, President & CEO at Aehr Test Systems]

After that, Chris will give a detailed review of our financial performance. And finally, we'll open up the floor to your questions. I just want to also point out that we've had a lot of inbound questions related to the AI market and what that means to AiR Test. So we'll be doing a deep dive as we have often done in other markets today to hopefully let people really understand the implications and how AiR is playing in that. This past year, we made significant progress expanding into additional key markets for semiconductor burn in solutions, including artificial intelligence processors, gallium nitride power semiconductors, data storage devices, silicon photonics integrated circuits and flash memory.

[Gayn Erickson, President & CEO at Aehr Test Systems]

This diversification of our markets and customers is significant given our revenue concentration in silicon carbide devices used in electric vehicles during our previous fiscal year. Silicon carbide wafer level burn in accounted for over 90% of our revenue in fiscal twenty twenty four, whereas it made up less than 40% of our revenue this fiscal twenty twenty five. In contrast, the burn in of artificial intelligence processors represented 0% of our revenue last year, but this year accounted for over 35% of our revenue. And we had three companies representing over 10% of Air's revenue this year, with two of these representing new markets and customers. As we grow, we expect that expanding into new markets and customers will not only allow us to grow faster, but also do so sustainably.

[Gayn Erickson, President & CEO at Aehr Test Systems]

The main growth areas for us in markets beyond silicon carbide included production wafer level burn in of AI processors, package part burn in for qualification and ongoing process monitoring of AI processors, and also production package part burn in and screening of those AI processors. We also had wafer level burn in of gallium nitride semiconductors and silicon photonics integrated circuits wafer level burn in. And while there was only a small amount of revenue in the fiscal year from wafer level burn in hard disk drive components, about 10% of our order bookings for the fiscal year came from this new market, all of which we expect to ship and generate revenue for from during this fiscal year, now '26. Looking back on the year, we're excited about the significant progress we've made with the key initiatives to expand these total addressable markets, diversify our customer base and develop new products, capabilities and capacity, all aimed at driving revenue growth and increased profitability. One of our biggest milestones this past year, and what we believe is currently the most important for future revenue growth, was the completion of development, validation, shipment and customer acceptance of the first ever wafer level burn in system for AI processors.

[Gayn Erickson, President & CEO at Aehr Test Systems]

Delivering the industry's first wafer level burn in solution for the AI processor market, the only one of its kind in the world, marks a major technological and commercial milestone and significantly expands the market potential for our FOX XP wafer level test and burn in systems. Our new high power FOX XP wafer level burn in system can test up to nine three hundred millimeter AI processor wafers at the same time. This achievement is a result of extensive development efforts over the last decade in test technology, particularly in delivering massive amounts of power and current to a wafer during test, wafer contacting technology, and thermal control and heat removal, as well as wafer handling and automation. When our lead AI customer first approached us about testing and burning their AI processors at the wafer level, it wasn't clear if this was even technically feasible, even with our proprietary and unique technology. We leveraged the technical capabilities we had developed over the years, along with the technology and design for test methods used in state of the art wafer foundries to meet these unique test and burn in stress requirements.

[Gayn Erickson, President & CEO at Aehr Test Systems]

This included applying thousands of amps of current to a single wafer to test devices capable of withstanding thousands of watts, and then not only doing it with one wafer, but nine wafers simultaneously. We also expanded our proprietary WaferPak contactor to support very high current testing capabilities, including the ability to adapt the thermals to create uniformity across a wafer that by definition is not otherwise uniform during burn in conditions. With Aehr demonstrating and now shipping the first ever solution for wafer level burn in of AI processors in partnership with this customer's outsourced assembly and test partner, one of the largest OSATs worldwide, we have proven that our high power FOX XP multi wafer systems and proprietary WaferPak contactors are a viable solution for high volume testing processors in wafer form. This approach eliminates the need to burn in these devices in package or system form, where test costs and yield losses due to failing devices during burn in are significantly higher and have a much more significant impact on overall manufacturing yield. Many AI processor companies are talking about billions of dollars of devices a year, with the largest AI processor company in the world shipping over $100,000,000,000 worth of processors in the data center applications this year alone.

[Gayn Erickson, President & CEO at Aehr Test Systems]

Even a 0.1% increase in yield by shifting the burn in of devices from the system or heterogeneous package level to wafer level is very significant. Today, burn in related screening and early life failures at the system or package level causes the entire package or system to be discarded due to the inability to repair these devices at this stage. Moving this screen to wafer level allows devices that would otherwise fail during screening at the package or system level to be removed before they're packaged, or worse, put into the system level. We believe using wafer level burn in will result in savings in manufacturing costs, increases in revenues associated with the limited supply of these devices, and a reduction in field related failures and warranty costs, as you can afford to put more screens in place or burn in longer to ensure the highest quality and reliability of devices. We're also receiving feedback from potential customers that doing this screening at wafer level is not only cheaper overall, but requires less electrical power from the grid, which has significant benefits.

[Gayn Erickson, President & CEO at Aehr Test Systems]

An important part of our story, which we have discussed for years, is the evolution of semiconductors that has driven the increased need for wafer level burn in. This includes the fact that semiconductors are becoming less reliable with the transition to smaller geometries, devices are physically larger and more devices are being developed on compound semiconductors like silicon carbide and gallium nitride, which require additional burn in and stress testing such as air provides to meet the stringent quality and reliability needs of their customers in the end markets. AI processors and other high performance central processing units or CPUs and network processors are also facing limitations related to their physical size due to the reticle limit in semiconductor manufacturing. The reticle limit is the maximum area that can be exposed in a single pass of the lithography equipment. Due to the reticle limit, a single chip or die cannot exceed this maximum area. This is a physical constraint imposed by the manufacturing process.

[Gayn Erickson, President & CEO at Aehr Test Systems]

AI models, especially large language models, require massive amounts of computation and memory. This translates to the need for increasingly large and complex chips. The GPUs used for AI training have already reached the reticle field limit. In order to overcome the reticle limit that prevents them from building a single massive chip, manufacturers are using chiplets, which are smaller die that can be interconnected to form a larger system. This approach effectively circumvents the reticle limit and allows for much larger total transistor counts.

[Gayn Erickson, President & CEO at Aehr Test Systems]

Advanced packaging technologies such as COOS or chip on wafer on substrate and SOIC or system unintegrated circuits enable the integration of multiple chiplets onto an interposer, allowing for complex high performance systems that exceed the size of a single reticle. As AI processors require increasingly large and complex designs, chiplet architectures and advanced packaging technologies are being used to overcome this limitation and enable the continued scaling of AI compute power. The reason these matters these matter to Airtest is that these devices all need production burn in screening to remove early failures that would otherwise occur during the lifespan of the AI processor. These failure rates are unacceptable and costly, impacting the end customer and increasing warranty costs for the supplier. In many cases, they can also pose safety issues, especially for processors used in autonomous or driver assisted vehicle technologies.

[Gayn Erickson, President & CEO at Aehr Test Systems]

The screening and burn in durations vary by process and device, but generally range from one to several hours or even twenty four hours or more, depending on the desired quality and reliability level for the end application or customer. These GPUs, particularly those used in data centers and in the creation and use of large language AI models, are not the commodity consumer semiconductors of the 90s and 2000s. These are not chips used in $200 graphics cards for gaming. Instead, these are nodes worth tens of thousands of dollars operated in parallel thousands at a time. If one node fails, it can completely disrupt the development or construction of the entire language model.

[Gayn Erickson, President & CEO at Aehr Test Systems]

As we've discussed with automotive and other application, reliability is critically important for these customers. AIR now offers a high volume production solution for package level burn in with our new Sonoma product line following the acquisition of InCal Technology last year. For customers seeking to perform production screening of these devices in package form, we now provide a highly cost effective solution with upcoming fully automated JEDEC tray to tray device handling and testing. Before our FOX XP wafer level test and burn in system, the only solution for doing this screening was products like our Sonoma system. And while this screening step is cost effective, and we believe our Sonoma systems offer the lowest cost solutions on the market for packaged part burn in of AI processors, it not only weeds out defective processors or memory, but also results in discarding highly expensive advanced packages, such as the CoASP package and substrate, along with all of the other devices packaged in the failed device.

[Gayn Erickson, President & CEO at Aehr Test Systems]

For example, multiple new AI processors feature two or more AI, a six, or GPO processors in the advanced package, with each AI processor die containing up to four high bandwidth memory or HBM stacks, totaling up to eight or more HBM stacks per package. Keep following here. Each of these HBM stacks can be eight die or more in the future, meaning it has eight stack memory dies per HBM stack. You go through all the math and there's a total of up to 64 or more HBM dies and two or more AI processors, plus a very expensive co op package substrate per package. If one of the AI processors or one of the HBM die fails during the production burn in after packaging, all of the other die plus the CoASP substrate are discarded.

[Gayn Erickson, President & CEO at Aehr Test Systems]

You can see the cost impact of performing burn in at the package part level. If you take this a step further, companies also perform a burn in at the system level when the GPU or AI processor multi die package is installed on a computer system printed circuit board, along with the device power supplies, heat sinks, and supporting infrastructure, such as all the high speed interconnect technology for AI processor to AI processor communication. Performing burn in at this stage impacts cost and yield even more significantly. You can see why the industry is showing such interest in our ability to test these devices at the wafer form. In addition to this lead customer for AI wafer level test, we have now received multiple inbound requests from several high profile processor companies that are very serious about wafer level testing.

[Gayn Erickson, President & CEO at Aehr Test Systems]

This ecosystem is very small, and having demonstrated that wafer level burden of high power AI processors is feasible, we're gaining visibility beyond our own sales and marketing efforts with the growing recognition that moving the AI processors and CPUs to wafer level is overwhelmingly advantageous from both a cost perspective and for yield. We're extremely busy right now engaging with multiple companies who are asking, can you test my parts? The conversation is, can Aehr do it? Not do we want it? I'm very excited to report today that one of these companies has now asked us to move forward with an evaluation for wafer level testing devices with one of their current high volume processors.

[Gayn Erickson, President & CEO at Aehr Test Systems]

This feasibility study will allow them to see the real advantages and performance of doing the production burn in at wafer level instead of in package or system level form as they do today. Based on what they have shared with us, we believe that if this evaluation succeeds, they plan to transition to high volume production wafer level testing, which would be a significant opportunity for Ehr. While this evaluation involves new wafer packs for their specific wafers, we believe that Ehre can address the needs in the near term with our proprietary AI processor optimized wafer packs designed specifically for these devices. We also have systems needed to run their wafers on our floor today, demonstrating this capability as well as fully automated aligners to showcase the automation of the 300 millimeter wafer handling. We expect this evaluation to take one or two quarters to complete fully.

[Gayn Erickson, President & CEO at Aehr Test Systems]

At the same time, we're working with this customer to determine their production capacity needs and discussing lead times to meet their requirements. Their capacity requirements are significant, and we feel we have the manufacturing capacity for systems, aligners and WaferPaks to meet the potential demand if we're successful with this evaluation and they decide to move to wafer level burn in using our solution. We also expect to move to evaluation phases with other AI companies during this fiscal year, and believe we can capture a meaningful share of the total production burn in market for AI processors with our FOX wafer level test and burn in systems and proprietary WaferPak contactors. So let me spend a few minutes on some of the other markets quickly, and I'll start with packaged part burn in. As I mentioned earlier, we also offer customers the option to perform their packaged part burn in screening, as well as their qualification reliability characterization for their GPUs, AI processors, CPUs and network processors.

[Gayn Erickson, President & CEO at Aehr Test Systems]

We completed our acquisition of NCAL last July 31, expanding our product portfolio to include their highly regarded packaged part reliability burn in and test solutions, especially their ultra high power capabilities for AI processors, GPUs and computing processors. Since that date, AIR has shipped more packaged part burn in systems than NINCal did in the last three years. It is a record breaking sales achievement for the qualification and production burn in of AI processors. We're very excited that with the added capabilities and resources from Air, we have been able to ramp up production to levels that Intel had never achieved, meeting the demand from AI processor companies for the qualification and production of their devices. With the addition of significant number of people, processes and scale, we've been able to shorten lead times, maintain low costs, address quality and do this in a high reliability platform, which has been overwhelmingly positive for customers.

[Gayn Erickson, President & CEO at Aehr Test Systems]

As a result, we won our first production AI processor customer for packaged part burn in during the fiscal year, receiving initial volume production orders for the multiple Sonoma ultra high power systems. This customer is one of the premier large scale data center hyperscalers that is making their own AI processors and is growing this capacity significantly. These are their first devices that use a production burn in system at the package part level instead of at the system level. They plan to ramp this device over the next year and are already discussing their next generation process as well as the one after that with AIR to ensure we can meet their production capacity needs. We said before that one of the best things about this acquisition is that it gives us a front row seat to the future requirements of a large number of these AI processor customers, providing us with visibility into the production burn in needs.

[Gayn Erickson, President & CEO at Aehr Test Systems]

As a result, some of these customers from packaged part side are coming to us asking about our wafer level burning capabilities. Eyre is the only company in the world that offers both the wafer level and packaged part burn in system for both qualification and production burn in of AI processors. We can provide them with options and show direct side by side comparisons of cost of test, capacity output, footprint, operational costs, and impact on yield based on how they decide to do their burn in. We're in the perfect position to help them while also remaining balanced, so we can tell them yes, regardless of how they want to do their burn in. We're very excited about all our new AI product offerings and the expanded total addressable market they bring to air, and we look forward to discussing our progress to further capitalize on this new market as we move through our new fiscal year.

[Gayn Erickson, President & CEO at Aehr Test Systems]

Another key milestone this past year was expanding their production level burn in for gallium nitrate power semiconductors. We secured an additional order for our FOX XB high power wafer production system with high volume for volume production of GaN devices from a leading automotive semiconductor supplier and a key player in the gallium nitride power semiconductor market, marking their commitment to advancing volume production wafer level burn in other GaN devices using our XP platform. This achievement expands our production wafer level burn in market for power semiconductors beyond silicon carbide applications used in electric vehicles, data center power conversion and solar to now include GaN, a high performance compound semiconductor optimized for mid power applications such as data centers, solar energy, automotive systems and considerable electronics and PCs. Additionally, we're in discussions and engagements with multiple other potential new GaN customers about their needs. GaN is a new and exciting semiconductor technology with high value applications, including automotive power conversion, solar inverters and solid state transformers and breakers.

[Gayn Erickson, President & CEO at Aehr Test Systems]

GaN offers a much broader application range than silicon carbide and is poised for significant growth in the coming decade. We've also made significant progress in the hard disk drive market. This past year, our lead customer began ordering multiple FOX CP single wafer production test and burn in systems, featuring an integrated high power wafer prober for their new high volume parts in a new application for burn in and stabilization of new devices in hard disk drives. These are follow on system orders to the first production order received all the way back in 2019. As we stated in previous calls, their plans for this new product were delayed during the pandemic, but they continue to work on this new device continuously over the last five years to ensure the performance and reliability of their devices.

[Gayn Erickson, President & CEO at Aehr Test Systems]

We understand from several analysts and shareholders that this customer has publicly called out our FOX systems as a key contributing factor in helping them achieve the long term reliability needs of this market. This customer is one of the top suppliers of data storage devices. We're very excited to start this production ramp after all these years of working with them on qualification and process development. During our last earnings call, I noted that the high power probers for our FOX CP for this HDD customer are sourced from Japan, and it was unclear how the tariff uncertainty might affect the timing of receiving these probers. At that time, we were hoping to receive the shipment by the May, but because of tariff uncertainties, these probers did in fact get significantly delayed.

[Gayn Erickson, President & CEO at Aehr Test Systems]

We just received the first one last week. We're working quickly to do the integration and engineering steps needed to finalize the test cell to be able to make the first shipments this quarter. In addition to multiple systems and backlog, the customers told us that they will be purchasing additional systems both in the short term and over time. I know it must be a broken record to hear terms like uncertainty around tariffs on many company earnings calls, but this is still the case. Despite this, we're extremely excited about our growth opportunity for our wafer level solution for HDD market and look forward to updating you further on progress next quarter.

[Gayn Erickson, President & CEO at Aehr Test Systems]

Now turning to silicon photonics ICs. This market continues to demonstrate market adoption for optical chip to chip communication and optical network switching. Several companies, including AMD, NVIDIA, Intel, TSMC and GlobalFoundries have announced product roadmaps for devices that utilize optical chip to chip communication. We have several customers in this space. At last count, was five to six customers, with one of the customers being an OSAT that purchases our tools for one customer but sparking it to others.

[Gayn Erickson, President & CEO at Aehr Test Systems]

We've seen a significant number of new WaferPak designs from our installed base of systems for new designs that they use for qualification development work on their FOX wafer level test and burn in systems. We also now offer a new system with higher power 3,500 watt per wafer configuration to meet the needs of new higher power wafers for optical IO and chip to chip communication devices. This is also available as an upgrade to our FOX NP systems for low volume production, as well as for FOX XP nine wafer production systems. Recently received another order for an upgrade to one of the FOX XPs we shipped a few years ago that includes upgrading to include our new integrated WaferPak auto liner, which provides fully hands free factory automation of silicon photonics integrated circuit wafers. We also have forecasts for new systems for incremental capacity this fiscal year for both systems and WaferPaks.

[Gayn Erickson, President & CEO at Aehr Test Systems]

We're well prepared with expanded manufacturing capacity for FOX high power systems and remain enthusiastic about the silicon photonics market, especially for the new application of silicon photonics integrated circuits and optical chip to chip communication, which we see as a significant market opportunity for our products. It seems odd to wait this long to talk about silicon carbide, but let me talk a little bit about that market as well. The silicon carbide power semiconductor market remains a significant opportunity for Air, and we believe we're well positioned to continue to grow with our current customers in this sector, as well as add some additional customers in this space over time. Despite a slowdown in the growth of electric vehicle shipments, electric vehicles are still growing significantly worldwide, and we believe the silicon carbide market continues on a robust long term growth trajectory. Demand for silicon carbide remains significantly driven by battery electric vehicles, but silicon carbide devices are also gaining traction in other markets including power infrastructure, solar and various other industrial applications.

[Gayn Erickson, President & CEO at Aehr Test Systems]

This quarter, we shipped our first configuration of the FOX XP, which can test 18 wafers at a time in a single system with support for our high voltage test resources that can test devices up to 2,000 volts in wafer form. The system also includes a proprietary arc suppression technology that prevents the devices from electrically arcing at these high voltage, while testing all devices at a time in a single insertion on each of 18 wafers. This capability has already proven in our nine wafer configuration, but is now extended to the 18 wafer system. It's also capable of being directly docked to our fully automated WaferPak aligner that takes industry standard wafer cassettes and FUPs to allow full factory integration. We believe we're well positioned in the silicon carbide market as we have a large customer base and the industry leading solution for wafer level burn in.

[Gayn Erickson, President & CEO at Aehr Test Systems]

So lastly, a little bit on our flash memory proof of concept project that we've been working on this year. As noted in earlier calls, we're collaborating with one of the world's leaders in flash memory to demonstrate the capability and cost effectiveness of our FOX XP platform for high volume production wafer level testing and burn in and flash memory wafers. This is very exciting because we believe ERIC can successfully demonstrate how to create a high density, high power, fully automated test cell, which will help us move to the next development phase. That next step involves working together to develop a next generation test system specifically designed to meet this customer's needs. Although this memory validation benchmark has taken us a bit longer than expected due to shipment delays in some of the components of this integrated system, the new MEMS based fine pitch wafer packed full wafer contactor is in house and ready to complete the benchmark.

[Gayn Erickson, President & CEO at Aehr Test Systems]

We're very encouraged and we hope to generate data and results this quarter with the aim of completing the benchmark by next quarter. New technologies in NAND are driving new requirements for wafer level burn in to address the manufacturing and negative yield implication of testing these devices at package or system level. We believe that AerosVox wafer level test and burn in platform combined with our proprietary WaferPak full wafer contactors is well positioned to offer competitive and cost advantage solution in this market. Looking ahead and concluding, Aire is well positioned to capitalize in growth in the overall semiconductor market. We remain focused on addressing the critical reliability requirements of next generation applications and leveraging key megatrends shaping our industry.

[Gayn Erickson, President & CEO at Aehr Test Systems]

Today, reliability is a vital priority across diverse sectors, including combustion, electric vehicles, data centers, infrastructure electrification and then expanding range of AI applications. As we enter fiscal twenty twenty six, we've established the infrastructure and capacity to support significant growth. This was the purpose of the investments we made this past fiscal year, including the upgrade of our manufacturing facility, including upgrades to power and infrastructure, consolidating package and wafer level burning under one roof, and implementing the necessary processes to support a very high volume of both wafer level and package level test and burn in systems and our proprietary WaferPak contactors. These foundational efforts are now complete. In the year ahead, we plan to increase our research and development investment to support further product enhancements, expand our R and D resources, hire additional talent to serve our growing AI customer base and enhance automation to improve scalability.

[Gayn Erickson, President & CEO at Aehr Test Systems]

Beyond these initiatives, the new fiscal year will focus on securing and executing orders. We believe that nearly all the opportunities and market verticals we discuss today will experience order growth in fiscal twenty twenty six. The one exception may be silicon carbide, as customer forecasts for this market are back half loaded with stronger growth expected in our fiscal twenty twenty seven. Still, there are many variables and silicon carbide may end up growing faster than expected, given the market share shifts currently underway and our lead customers increasing market share in the industry. During call, we announced the temporary withdrawal of our financial guidance following the U. S. Administration's tariff announcements just a few days earlier.

[Gayn Erickson, President & CEO at Aehr Test Systems]

Customers At that time, we are concerned about the potential secondary impacts on our current and prospective customers as well as the possibility of pauses or delays in customer orders, shipments or supply chain deliveries. We remain very confident in Air's long term outlook, but we are still seeing the impact of tariff related uncertainty on the timing of specific orders, particularly in our first quarter. As a result, we've chosen to maintain a cautious approach and are not reinstating specific guidance at this time beyond what we've already stated, which is that we anticipate order growth across all segments in this fiscal year with this possible exception of silicon carbide. We're very optimistic about our growth opportunities in all the segments we've discussed and our ability to meet the potential demand of these markets. And with that, I'll turn it over to Chris.

[Chris Siu, EVP - Finance & CFO at Aehr Test Systems]

Thank you, Gayn. Before I review our financial results, I'd like to provide an update on the integration of our InCal acquisition, which we completed on July thirty first of last year. Since the acquisition, AIR has dedicated significant financial and human resources to ensure a successful integration of InCal into our operations. We have fully migrated InCal's financial records into our Oracle NetSuite Cloud ERP system and integrated their HR and manufacturing functions into Air's broad information systems. Additionally, we have completed to transfer all inventory, as well as comprehensive documentation of product designs, source code and assembly and test instructions into Ehlers processes.

[Chris Siu, EVP - Finance & CFO at Aehr Test Systems]

I'm pleased to report that our plan to consolidate personnel and manufacturing into Ayres Fremont facility was complete by the fourth quarter of fiscal twenty twenty five and we successfully closed the InCal facility on 05/30/2025 ahead of our original schedule. I want to express my sincere thanks to our teams for their commitment, dedication and outstanding execution throughout this integration. As a result of the consolidation, we incurred one time restructuring charges of 864,000 in our fiscal fourth quarter related to closure of the In Cow facility. With the integration of the two companies, we'll be able to create synergy and reduce our facility costs by over $800,000 per year going forward. Turning to the full year results, we reported revenue of $59,000,000 down 11% year over year.

[Chris Siu, EVP - Finance & CFO at Aehr Test Systems]

Our full year non GAAP gross margin was 44% compared to 49.6% in the prior year. Our full year non GAAP net income was $4,600,000 or $0.15 per diluted share in fiscal twenty twenty five compared to non GAAP net income of $35,800,000 or $1.21 per diluted share in fiscal twenty twenty four, which included the impact of a one time tax benefit of approximately $20,700,000 resulting from the release of the company's full income tax valuation allowance. Our annual bookings in fiscal twenty twenty five were $61,100,000 up over 24% compared to $49,000,000 in the prior fiscal year. The increase in bookings was primarily related to the sales of AI processor burn in systems, WaferPaks and burn in module boards, partially offset by lower customer orders related to silicon carbide WaferPaks. Our backlog as of year end was 15,200,000.0 with 1,100,000 bookings received in the first five weeks of the first quarter of fiscal twenty twenty six.

[Chris Siu, EVP - Finance & CFO at Aehr Test Systems]

We now have an effective backlog of $16,300,000 Turning to our Q4 performance. We're excited about our continued momentum in penetrating the artificial intelligence market with AI processors burning now accounting for over 35% of our business this year compared to zero last year. For the fourth quarter, we had three customers representing over 10% of total revenue and two of these customers target the AI market. Revenue for the fourth quarter totaled 14,100,000.0 a 15% decrease compared to $16,600,000 in Q4 last year. The year over year decrease was primarily due to a delayed shipment of a FOX CP system that was forecasted to be shipped to our hard disk drive customer.

[Chris Siu, EVP - Finance & CFO at Aehr Test Systems]

Because of tariff related uncertainties, COVID sourced from Asia to support the FOX CP system were delayed. We now expect to complete this shipment in our current quarter Q1 of fiscal twenty twenty six. WaferPak revenues were $4,200,000 and accounted for 30% of our total revenue in the fourth quarter. WaferPak revenues continue to represent a sizable revenue stream for our business, driven by the ongoing demand for new WaferPak designs from both existing and new customers as they secure new end customer designs and strive to meet their market requirements. We are pleased with the significant progress we made integrating products from our In Cal acquisition into our product portfolio to capitalize on emerging opportunities in the AI market.

[Chris Siu, EVP - Finance & CFO at Aehr Test Systems]

Sales of our Sonoma, Tahoe and Echo package part burn in systems continue to contribute strongly, accounting for 44% of our fourth quarter revenue. We believe our strategy to expand AIR's product offerings and diversify beyond silicon carbide applications is gaining meaningful traction in the marketplace. Non GAAP gross margin for the fourth quarter was 34.7% compared to 51.5% in the same period last year. Non GAAP gross margin decreased primarily due to lower overall revenue level compared to Q4 last year and less favorable product mix. Additionally, we incurred high manufacturing overhead due to under absorption as our manufacturing capacity utilization was lower during the renovation of our Fremont site and the consolidation of inventory from the InCal facility.

[Chris Siu, EVP - Finance & CFO at Aehr Test Systems]

Non GAAP operating expenses in the fourth quarter were $5,400,000 reflecting a 6% increase from $5,100,000 in Q4 last year. This year over year rise is primarily attributed to the inclusion of InCal's operating expenses in our financial results, as well as higher legal and professional service fees. We anticipate incurring additional legal expenses in the upcoming quarters as we continue to protect our intellectual property rights in China. Non GAAP net loss for the fourth quarter, excluding the impact of stock based compensation, amortization of intangible assets and restructuring charges was $248,000 or negative $01 diluted share in line with the Street consensus. This compares to a non GAAP net income of $24,700,000 or $0.84 per diluted share in the fourth quarter of fiscal twenty twenty four, which as a reminder included a one time tax benefit of approximately $20,700,000 resulting from the release of the company's full income tax valuation allowance.

[Chris Siu, EVP - Finance & CFO at Aehr Test Systems]

Moving to the balance sheet. At the end of Q4, our cash, cash equivalents and restricted cash totaled $26,500,000 down from $49,300,000 at the end of Q4 fiscal twenty twenty four. During fiscal twenty twenty five, we used $11,000,000 to acquire InCal, which enabled us to enter the AI market and secure key customer relationships with its superior packaged part burn in product Sonoma. Additionally, we spent $5,000,000 on CapEx to support the consolidation and upgrade of our Fremont manufacturing facility and headquarters and used $3,600,000 procure inventory and $3,800,000 for the remaining working capital. We have no debt and continue to invest excess cash in money market funds to generate interest income.

[Chris Siu, EVP - Finance & CFO at Aehr Test Systems]

Let me provide an update on the class action claims and derivative lawsuit filed against Airtest on 12/03/2024. We are pleased to report that on 05/16/2025, the court appointed lead plaintiff for the class action lawsuit elected to voluntarily dismiss the case with all parties bearing their own fees and costs. On 06/09/2025, the court also dismissed the derivative lawsuit without prejudice. The company believes the claims in all these cases were without merit. Following the voluntary dismissal of the shareholder class action and the court's dismissal of the consolidated derivative action, no related proceedings are currently pending.

[Chris Siu, EVP - Finance & CFO at Aehr Test Systems]

As Gaye mentioned, considering the secondary effects of the tariff announcements on our current and potential new customers, along with the uncertainty this quarter regarding possible pauses or delays in customer orders, shipments or supply chain delivery delays. We're temporarily withholding our guidance for our fiscal twenty twenty six year and we'll reassess our guidance policy as clarity develops. Despite the uncertainties around tariffs, we're excited about the long term growth opportunities across our more diverse target markets. We're especially encouraged by the progress we have made in addressing the artificial intelligence processes market and other potential high growth sectors, including gallium nitride power semiconductors, data storage devices, CECOM photonic integrated circuits and flash memory. To succeed in this new markets, we plan to increase our research and development investments this fiscal year by expanding our R and D resources and hiring additional talent in The U.

[Chris Siu, EVP - Finance & CFO at Aehr Test Systems]

S. And The Philippines to support our growing AI customer base and increase automation for scalability. With more R and D talent, a strong infrastructure and enhanced manufacturing capabilities in place, we're more prepared than ever to achieve our growth objectives. Lastly, you may have noticed that we are holding this earnings call one week earlier than usual because of the CEO Summit has been pushed back from July to October and will be held in Phoenix instead of San Francisco. Looking at the Investor Relations calendar, Airtest will be participating in two upcoming conferences over the next month.

[Chris Siu, EVP - Finance & CFO at Aehr Test Systems]

We'll be meeting with investors virtually at Needham's Six Annual Semiconductor and Semicap one on one Conference on Wednesday, August 20. The following week we'll meet with investors in person on Tuesday, August 26 at the Jefferies Technology Summit Conference in Chicago. We hope to see some of you at these conferences. This concludes our prepared remarks. We're now ready to take your questions. Operator, please go ahead.

[Operator]

Thank you. At this time, we will be conducting a question and answer session. Please proceed.

[Christian Schwab, Senior Research Analyst at Craig-Hallum Capital Group LLC]

Question. Gain, I have received a lot of questions regarding your most recent slide in your investor deck with a lot of well known marquee names. I'm just is that should investors think of that list as a list of current and previous customers? Or does it include maybe names of prospective customers, such as new customers that you're working with or new silicon photonics customers, etcetera. How should we be thinking about that slide?

[Gayn Erickson, President & CEO at Aehr Test Systems]

Okay. So when we introduced that slide, we updated the customer slide a few weeks ago compared to the deck that we've had on website prior to that. And we were actually at a conference that had a public speaking. It is recorded and available to all people through our website.

[Gayn Erickson, President & CEO at Aehr Test Systems]

In that specific conference, I pointed out that we have updated the customer list to reflect the current customers from the nCal package part burn in side of our business. Those are customers, not prospects. And yes, there's some notable names on there. Not every single customer is still on there. Actually, there's been some historical 10% customers that specific agreements with or limitations of ever saying their names publicly other than reference them when they were doing 10% of our revenue.

[Gayn Erickson, President & CEO at Aehr Test Systems]

But, yeah, there's some there's some good names on there.

[Christian Schwab, Senior Research Analyst at Craig-Hallum Capital Group LLC]

Great. And then as as it relates to 10 customers, are are are you, since you didn't mention it a few times without naming the names, is is that going to be, in your k when you file it, or are you not gonna name the 10% customer?

[Gayn Erickson, President & CEO at Aehr Test Systems]

So we're yeah. We're the new SEC rules do not require you to name it. So unless we already have prior arranged agreements with the customers to name them, we're no longer doing that. Prior to that SEC rule, we could name them even if the customers objected, if you will, but we're not doing that now.

[Christian Schwab, Senior Research Analyst at Craig-Hallum Capital Group LLC]

Great. And then then as as the, you know, the AI opportunity seems quite significant, I know you in previous conference calls said that that market could be materially bigger than what you had previously said that the silicon carbide opportunity could be over time if wafer level burden was used by many people. Can you give us any idea of not this year or next year, but, you know, over time, you know, have you walked through the math to to what you

[Gayn Erickson, President & CEO at Aehr Test Systems]

Yeah. We as you imagine, we have. We have. So, similar to how we built up the original silicon carbide models that took a look at, say, the target applications for silicon carbide, were primarily the electric vehicles, how many EVs, how many components would be in it, etcetera, etcetera, you could come up with how many wafer starts that would require in say 02/1930. And I know that you had put some models together at that time.

[Gayn Erickson, President & CEO at Aehr Test Systems]

There were about 4,000,000 wafer starts. We looked at twelve hour burn in time, single insertion with our systems. Long story short, we saw that the total market was somewhere 300, 350 of our systems with ASPs, about $4,000,000 apiece or something like that. If you look at the AI market, the AI market, interestingly in that same timeline may actually be half as many wafers, which seems a little odd. But the 300 millimeter wafers and you actually don't test them in one single touchdown.

[Gayn Erickson, President & CEO at Aehr Test Systems]

It'll take multiple touchdowns to test these wafers because they might have 20,000 watts of power on them and we're testing 3,000, 4,000 watts at a time. You can kind of go through the math. At even significantly lower average burn in times than say, the silicon photonics, I'm sorry, the silicon carbide is. You go through the math and the market is three to five times larger than the silicon carbide was. One of the things that we'll be looking at is what are the burn in times.

[Gayn Erickson, President & CEO at Aehr Test Systems]

We have, we're doing burn in of customers around the world, and we have customers that are doing one hour stress time, some four hour burn in times and twenty four hour burn in times, for example, all the way up. So it'll be interesting to see and we think that's related to how much the longer the burn in time, the higher the quality ends up being to the end customer. And so it kind of depends on both availability, capacity and what the target customers required and how critically important it is to get to the quality levels. So there's a little bit of dynamics in here, but there's no way to do the math and not come out with it being significantly larger.

[Christian Schwab, Senior Research Analyst at Craig-Hallum Capital Group LLC]

Fantastic. No other questions. Thanks, Gayn.

[Gayn Erickson, President & CEO at Aehr Test Systems]

Thank you.

[Operator]

The next question comes from Jed Dorsheimer with William Blair. Please proceed.

[Jed Dorsheimer, Group Head–Energy & Power Technologies at William Blair]

Hi. Yeah. Thanks for taking my question. I guess first one, Gain or Chris, just the step down in gross margin quarter to quarter or year over year too. I'm assuming that it's a mix issue in terms of drop off of WaferPak consumables and a mix towards InCal.

[Jed Dorsheimer, Group Head–Energy & Power Technologies at William Blair]

Is there anything else that should be called out with respect to shift in margins, of course, lower revenues and to spread the fixed cost. But is it primarily mix in revenue levels?

[Gayn Erickson, President & CEO at Aehr Test Systems]

There's two types of mix in this thing too. There definitely was a mix in that actually with some of the wafer level burn in orders didn't materialize as we were kind of thinking at the time, we actually pulled in some packaged part systems. And the packaged part systems have a little lower margin. The consumables have a lot less margin than our WaferPaks, for example. But the other piece is during that quarter, we had the full burden of the InCal facility as well, which we talked about now not having kind of carrying forward.

[Gayn Erickson, President & CEO at Aehr Test Systems]

So we had the double whack of both facilities going on with primarily just packaged part burn in revenues and some WaferPaks. So I think as we go forward, the same quarter would be materially better. And of course, we have the potential of much higher volumes as we go forward.

[Chris Siu, EVP - Finance & CFO at Aehr Test Systems]

Yes, just to add on that also the utilization was not as high as before because we were moving. Some of the folks actually were helping with the moves into operations. Not building products instead of. So we got to expense those labor costs.

[Jed Dorsheimer, Group Head–Energy & Power Technologies at William Blair]

Got it. That's helpful. Thanks. And then, Gain, just maybe if you could, your tenor around AI processors is certainly skewed much more positively over the past year. And, you know, I know that silicon photonics, you you took time to call that out.

[Jed Dorsheimer, Group Head–Energy & Power Technologies at William Blair]

Copackaged optics are are becoming a a more meaningful part of the design. I'm just curious what was you know, is it just the size of the TAM? There seems like there was there was a a specific shift in terms of your excitement around this market, and I'm is it a a function of your technology and and the moat that you have? May if you wouldn't mind just explain and maybe I have that wrong. So but

[Gayn Erickson, President & CEO at Aehr Test Systems]

No. No.

[Gayn Erickson, President & CEO at Aehr Test Systems]

I I I think you're I I believe I think it's people off that's, you know, what what makes you lose sleep at night and what makes you excited. There's material difference in our story related to AI from nine months ago, maybe six months ago. Nine months ago, we were serious when we said we're doing this evaluation with the first AI customer, and while we believe it will work, we still have to work through it. We also didn't finalize the burn in times, etcetera. Now that we've proven that it works, understand the size of the market through the burn in times, and candidly delighted the customer, if you will, we're now also recognizing that the features that we implemented in that machine are applicable to other customers.

[Gayn Erickson, President & CEO at Aehr Test Systems]

So at the time, if you said, okay, nine months ago, it's like, I think this is going to work and the customer was cheering us on, then it worked. And then the customer, two quarters ago gave us an order and we shipped it weeks later, it felt like. To now we have inbounds from customers to we're now evaluating on paper the qualification of those devices and recognizing we can test your parts and this is why. So you're starting to see in the eyes of the customers looking back at you the value that you have in doing this and the sincere interest in trying to make this happen. They're like, how can you make this happen?

[Gayn Erickson, President & CEO at Aehr Test Systems]

So if it's not coming across clear enough and I know as a CEO, you have to be careful of I'm always a cheerleader, but this is very real in their eyes. And we used to talk about stacked memories and how important it would be to burn them in before you stack them. You're taking devices that are maybe $2 and you're putting them eight high to make a $16 or $20 part. Okay? Then we talk about silicon carbide devices that were going into these modules for EVs.

[Gayn Erickson, President & CEO at Aehr Test Systems]

We were taking $10 parts, putting 10 of them into a package and selling them for $200 and look at the value added by doing that. Now we're talking about HBM stacks where the stack of memory is hundreds of dollars times eight stacks, processors that are a thousand dollars of copy out of a TSMC fab. They're all stacked together, and they all need production burn in. The math is so obvious about the value of being able to move this to wafer level, that it's just more about what can you do to prove it. And we have the ability now to not only physically show it, we can bring customers in, we have tools in house that are configured for AI, high power, 300 millimeter wafers with our aligners.

[Gayn Erickson, President & CEO at Aehr Test Systems]

They can see wafer packs. We've upgraded the facility with enough power to be building 10 to 20 systems at a time if needed. That's not to imply that that's how big our forecast is, but we have that capacity, and they come in and look and go, okay, I get this. So the other thing, and I made some comment, kind of a snide comment, that the customer enthusiasm exceeds our ability to sell and market, and that's not a dig on my sales and marketing team. What we believe has happened is that these customers are being walked by the tool, and tools I should say, because it's tools actually, and seeing the feasibility of it.

[Gayn Erickson, President & CEO at Aehr Test Systems]

And so the biggest OSAT is marketing this capability, and we're getting these people calling in and say, woah, woah, hold on a second. I mean, guess I got the press release, but I just saw it or understand it. What do I need to do to do that? You can imagine you'd be pretty excited about that.

[Jed Dorsheimer, Group Head–Energy & Power Technologies at William Blair]

Yeah. No. Certainly. That's helpful. Last question for you.

[Jed Dorsheimer, Group Head–Energy & Power Technologies at William Blair]

Along those same lines, you mentioned the OSAT that's starting to market. So you've got an OSAT in your silicon photonics, an OSAT or two that you're working with in the AI processor. And mostly customers that own the design for the AI processors. What you haven't mentioned, you you did mention TSMC, but I'm just curious from a foundry perspective, what's the what where are the discussions with with foundries in the in the process? Are you seeing some cross pollinization like you are with OSATs?

[Chris Siu, EVP - Finance & CFO at Aehr Test Systems]

For sure.

[Gayn Erickson, President & CEO at Aehr Test Systems]

Yeah. So I'm gonna use I'm gonna use a little different vocabulary. In this world, there's only really two foundries. Well, to be respectful for Intel, maybe three that can build them.

[Gayn Erickson, President & CEO at Aehr Test Systems]

So GlobalFoundries isn't really building AI processors because of the nodes they're on. So you're really talking about TSMC and potentially Intel. With TSMC having, right now, I think everybody but Intel. And then you talk about design houses. Design houses are the companies that are actually working with the hyperscalers in designing their new ASICs or AI processors.

[Gayn Erickson, President & CEO at Aehr Test Systems]

So you're talking about Marvell, Broadcom, All Chip, as examples. K? Those are the big guys that are actually doing the new designs. K? Then, of course, some of the big hyperscalers have in house design.

[Gayn Erickson, President & CEO at Aehr Test Systems]

They then work with the models, say, for example, with TSMC that will provide them with the models based upon what particular node they're at, that will have DFT, design for testability, features and functionality inside of it that interestingly make them common. And then they can outsource that to really two or three of the big OSATs, the biggest one being ASC, who also bought Spiel, but people think those are two different companies, but candidly they're really the same. And then you have Amcor, you have Japan that is trying to get some of their business, JCET, and then they're not an OSAT, they're just test, and that's KYEC. So it's a pretty small community, and very a lot of cross pollinization of ideas, I would say, and awareness. And so once the system got put into production, the lights started to go on and the phone started to ring with people saying, hey.

[Gayn Erickson, President & CEO at Aehr Test Systems]

Wait a minute. What do you I thought that was just a marketing thing. This is real. Can you do my part two?

[Jed Dorsheimer, Group Head–Energy & Power Technologies at William Blair]

Thank you.

[Gayn Erickson, President & CEO at Aehr Test Systems]

I hope that helps.

[Operator]

The next question comes from Igor Domachev with Freedom Broker. Please proceed.

[Egor Tolmachev, Senior Analyst at Freedom Capital Markets]

Hello, gents. Thank you for Exhaustive Market comments. I wanted to get a glimpse into your outlook for 2027, especially for TSMC matter. Recently, TSMC reported that there were reports that TSMC plans to wind down gallium nitride foundry services by 2027. Could you share your thoughts on how this shift in market can impact your business and addressable markets?

[Gayn Erickson, President & CEO at Aehr Test Systems]

Okay. So I mean, we chose not to give guidance on '26, so I'll be struggling with '27. But we do believe we can get back to the track of growing significantly over this period of time. The size of the market, for example, between AI, silicon photonics for optical chip to chip communication, and you add in silicon, you know, even silicon carbide are all kicking in pretty hard in '27. So, you know, we're we're planning for, you know, pretty significant growth.

[Gayn Erickson, President & CEO at Aehr Test Systems]

I'll leave it at that. Okay? Now you specifically talked about GaN and TSMC. TSMC mostly I wake up every day thinking about all the AI wafers that TSMC is doing. GaN, gallium nitride can be put onto multiple different process substrates.

[Gayn Erickson, President & CEO at Aehr Test Systems]

The most kind of interesting one would be on silicon, large silicon substrates. But a lot of the they're both IBM folks around the world, like Infineon, for example, or people that have dedicated foundries. And then TSMC is also doing a foundry. I don't know what TSMC's market share is, but candidly, when I talk to customers, I hear a lot more about the other foundries or their own IDM sources than TSMC. So I don't believe that it has a negative impact on us if they start to wind down that business.

[Gayn Erickson, President & CEO at Aehr Test Systems]

I think that just shows up somewhere else, either at one of the IDMs or one of the other foundries.

[Egor Tolmachev, Senior Analyst at Freedom Capital Markets]

Okay, great. Thanks. And in terms of your new AI clients, how long will it take to pass all qualifications to reach your final decisions for your client after you get the first client delivered?

[Gayn Erickson, President & CEO at Aehr Test Systems]

So we already have the first client. We announced that we were I think this year exactly, we announced that we had a commitment from a first customer to evaluate our solution for AI. We said we're very excited about it, but there were still a lot of uncertainties. The customer seemed extremely willing and pulling us in. I think I used the term they're more excited than we are and more hopeful about getting the business, which of course was good.

[Gayn Erickson, President & CEO at Aehr Test Systems]

Then within a quarter, we said it was progressing pretty well. The following quarter, we said we are now testing wafers, and the data looked good. And within that quarter, they placed an order and we shipped it at the same time. That was the first customer, which there's some argument takes longer than the second one. I will tell you our enthusiasm and confidence is a lot more higher because of actual evidence.

[Gayn Erickson, President & CEO at Aehr Test Systems]

But there's still some variables and things that we still need to worry. My attorneys will always tell you, be careful. There's always risk, and, you know, you never know till it till the order's in hand. But, you know, we think that a decision could be made, you know, within, say, six months or so, and potentially orders placed somewhere thereafter.

[Egor Tolmachev, Senior Analyst at Freedom Capital Markets]

Yeah. I got it. Thank you. It was useful.

[Gayn Erickson, President & CEO at Aehr Test Systems]

Thank you.

[Operator]

The next question comes from Larry Schlebina with Schlebina Capital. Please proceed.

[Larry Chlebina, President at Chlebina Capital Management]

Hi, Gaine. That first AI customer at the OSAT, so are you under the belief that they're really pleased with it? And do you expect more orders from them in the near future?

[Gayn Erickson, President & CEO at Aehr Test Systems]

Yes to both of those. Wait a minute. You said near future. I want to be careful of setting any timelines.

[Gayn Erickson, President & CEO at Aehr Test Systems]

But I'll go out and say we expect just more this year, though.

[Larry Chlebina, President at Chlebina Capital Management]

And then now you have another AI customer in evaluation. So that's the second one for wafer level burn in. And then you have a third one that's going after the production in the package part burn in. Are they three distinct AI customers or are they

[Gayn Erickson, President & CEO at Aehr Test Systems]

Yes. Different.

[Larry Chlebina, President at Chlebina Capital Management]

Totally different. And in the write up, you said that you shipped a 18 wafer high power silicon carbide system. Did that ship and book in the May?

[Gayn Erickson, President & CEO at Aehr Test Systems]

Yes. Yes. And it was, and it was an upgrade to one of the systems that they had purchased earlier. Part of our strategy and one of our commitment with customers is this commitment to a platform that allows people to maintain forward backwards compatibility. So it was a really big deal.

[Gayn Erickson, President & CEO at Aehr Test Systems]

They shipped the system here. We reworked the system and then shipped it back to them capable of testing 18 wafers at a time at high voltage, which is amazing.

[Larry Chlebina, President at Chlebina Capital Management]

And and that also included the automated aligner?

[Gayn Erickson, President & CEO at Aehr Test Systems]

Actually, in this case, the it didn't it it did not. It shipped back without the automated aligner.

[Larry Chlebina, President at Chlebina Capital Management]

Do you anticipate We can upgrade

[Gayn Erickson, President & CEO at Aehr Test Systems]

not the for that. They by the way, they have automated they have automated aligners, but we only upgraded the system, basically.

[Larry Chlebina, President at Chlebina Capital Management]

I see. Do do you anticipate, going forward that all the, silicon carbide systems will be high powered?

[Gayn Erickson, President & CEO at Aehr Test Systems]

Actually, we refer to them as high voltage, but I know what you mean. Mostly, yes. We've been working really closely with the OEMs making them aware, like the car suppliers, the EV guys, to making them aware of the capability to be able to continue to provide lower and lower cost solutions that include the high voltage insertion as well if they want to do it. I would say that it's mostly likely that people will buy it with that. And it allows you to do it with multiple different stress conditions, but this allows you to also do the stress condition with high voltage, which is very valuable.

[Larry Chlebina, President at Chlebina Capital Management]

Does that include a premium? Do you get a premium price on that going forward or not?

[Gayn Erickson, President & CEO at Aehr Test Systems]

Yeah. The option does cost additional dollars. That's correct.

[Larry Chlebina, President at Chlebina Capital Management]

Okay. I got to get my memory question in. You talked up how it makes so much sense for HBM to go to wafer level burn in. When are you going to get a valuation going for an HBM application?

[Gayn Erickson, President & CEO at Aehr Test Systems]

That's a good question. We've talked about walking before we run, and the walking to begin with was the wafer level burn in application for the NAND flash. But one of the critical things that we mentioned last time, but I'll mention again today, one of the most specific things we were implementing was a new fine pitch MEMS WaferPak that allow us to get to very attractive price points at extremely high pin counts. Okay? But it also allows us to go to, you know, four times or one fourth the pitch.

[Gayn Erickson, President & CEO at Aehr Test Systems]

These are distances, if you will, than what we have today. That fine pitch is technically fully capable of doing DRAM as well. We knew that on purpose. So one of the critical things is there was no way to contact a DRAM HVM device with our previous WaferPaks, but we now enable it through this WaferPak.

[Larry Chlebina, President at Chlebina Capital Management]

Right. So now

[Gayn Erickson, President & CEO at Aehr Test Systems]

there's also things on the AI roadmap that are are reusing the technology developed under this as well.

[Larry Chlebina, President at Chlebina Capital Management]

So now that you have the MEMS fine pitch wafer pack, and it's proven out on flashes, is that correct?

[Gayn Erickson, President & CEO at Aehr Test Systems]

It like We're trying to get it finalized throughout this quarter here.

[Larry Chlebina, President at Chlebina Capital Management]

Okay. So it seems like that would entice one of the HBM guys to say, boy, this could solve a big problem that we have as we go from eight stacks to 12, possibly eventually up to 24.

[Gayn Erickson, President & CEO at Aehr Test Systems]

Yeah, I think you're right on that.

[Larry Chlebina, President at Chlebina Capital Management]

All right. Well, we'll be waiting to hear when you do that. That's all the questions I have.

[Gayn Erickson, President & CEO at Aehr Test Systems]

Thanks, Larry.

[Chris Siu, EVP - Finance & CFO at Aehr Test Systems]

Thank you.

[Larry Chlebina, President at Chlebina Capital Management]

Thank you.

[Operator]

Okay. We have no further questions in the queue. I'd like to turn the floor back to management for any closing remarks.

[Gayn Erickson, President & CEO at Aehr Test Systems]

All right. Well, I thank everybody for their patience. And I fully recognize that our prepared comments were at least ten minutes longer. We added about a fifteen minute chunk in the middle to do detail and get on record the information around the AI that we won't need to do next time as well. And hopefully we can just give you an update on the successes that we're having there.

[Gayn Erickson, President & CEO at Aehr Test Systems]

So appreciate everyone's patience and listening through this. And if you have any follow on questions, can reach out to us. We'll be happy to take the call. Thank you very much.

[Chris Siu, EVP - Finance & CFO at Aehr Test Systems]

Thank you.

[Operator]

This concludes today's conference, and you may disconnect your lines at this time. Thank you for your participation.

Participants

Executives

• Gayn Erickson, President & CEO
• Chris Siu, EVP - Finance & CFO

Analysts

• Jim Byers, Director at PondelWilkinson Inc.
• Christian Schwab, Senior Research Analyst at Craig-Hallum Capital Group LLC
• Jed Dorsheimer, Group Head–Energy & Power Technologies at William Blair
• Egor Tolmachev, Senior Analyst at Freedom Capital Markets
• Larry Chlebina, President at Chlebina Capital Management