Astera Labs (ALAB) Q4 FY2025 Earnings Call Transcript

Date: February 10, 2026 | Source: Motley Fool (full verbatim transcript)

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Leslie Green (Investor Relations, Astera Labs): [Forward-looking statements disclaimer and introductions.] With that, I would like to turn the call over to Jitendra Mohan, CEO of Astera Labs. Jitendra?

Jitendra Mohan (CEO and Co-founder, Astera Labs): Thank you, Leslie. Good afternoon, everyone, and thanks for joining our fourth quarter conference call for fiscal year 2025. Today, I'll provide an overview of our Q4 and full year 2025 results followed by a discussion around the current trends within the AI infrastructure market. I will then turn the call over to Sanjay to walk through Astera Labs' near and long-term growth profile. Finally, Mike will give an overview of our Q4 2025 financial results and provide details regarding our financial guidance for Q1 2026.

Astera Labs delivered strong results in Q4 with revenue at $270.6 million, up 17% from the prior quarter and up 92% versus Q4 of last year. For full year 2025, revenue was $852.5 million, up 115% versus the prior year. Growth within the quarter and for the year was broad-based, across our signal conditioning, smart cable module, and switch fabric product portfolios as we continue to diversify our business profile with several new design wins across multiple customers. Secular trends remain robust within the AI and cloud infrastructure space, supported by exceptionally strong spending commentary coming from the top US hyperscalers, with Google and AWS alone guiding nearly $400 billion in total CapEx spending for 2026. We are benefiting from this increased spending both in the near term and long term.

Furthermore, the market opportunity for our intelligent connectivity platform is substantially larger than we initially anticipated, encompassing multiple product lines, physical media types, form factors, and protocols for both standard and custom applications. Starting with Scorpio, our PCD family continued its volume ramp at our lead customer, with growth coming from both existing and incremental platform designs. For the full year, Scorpio P Series exceeded our target of 10% of revenue and remains the only PCIe six fabric shipping in volume in the market. Looking into 2026, we anticipate continued growth for Scorpio P Series at our lead customer, as well as commencing shipments into at least two additional major hyperscalers on the next generation AI platforms.

Moving to Scorpio X Series, we expect to incrementally grow revenue in 2026 followed by a transition to high volume production in 2026. We continue to make excellent progress with additional engagements looking to leverage PCIe for scale-up networking. As previously communicated, we are engaged with 10 plus customers for Scorpio X family, and our current expectation is that we will ship initial quantities of Scorpio X Series to support new customer platforms in 2026 with volume ramps set for 2027. Solid traction continues to develop with respect to UA Link, with a vibrant ecosystem including product announcements, broad IP availability, and compliance methodologies being finalized.

Recent public roadmap announcements from AWS and AMD along with other ongoing engagements indicate a broad adoption. UA Link remains the highest performance, lowest latency, fully open solution for AI scale-up connectivity, and we will be ready to intercept the initial customer platform ramp in 2027. Our Ares portfolio continues to perform well, with PCIe six solutions contributing robust growth during the quarter, and the overall portfolio growing nearly 70% year over year in 2025. The demand for Ares is driven by increasing deployments of custom AI accelerators at large hyperscalers.

Our Ares Gen six products are the industry's only PCIe six DSP retimer solution shipping to customers in high volume today, and we are well positioned to maintain our leadership role in the market. We remain very early in the PCIe six transition cycle and anticipate additional customers will launch PCIe six capable AI accelerators and systems throughout 2026 and into 2027. As a result, we expect our Ares product line to continue growing in 2026 and beyond. Taurus was our strongest performing product family during 2025 as new programs began shipping in volume to support Q4 designs across both AI and general-purpose systems.

In 2025, we saw Taurus revenue grow by more than four times year over year, driven by a breadth of 400 gig designs that will serve as a baseline for continued growth in 2026. We look for the transition to 800 gig switching platforms to be the next catalyst for market expansion, driving further growth opportunities for Taurus. Finally, we made good progress with our Leo CXL memory expansion products in 2025 and look to build upon that in 2026. We are excited to announce our partnership with Microsoft, Intel, and SAP to enable customers to evaluate CXL memory expansion capabilities for their specific workloads within Microsoft Azure M Series virtual machines.

This program represents the industry's first publicly announced deployment of CXL attached memory, and we expect initial production volumes to commence in 2026. Overall, we are proud of the progress we have made in 2025. We added new product lines to service more sockets and address custom applications, increased the dollar content per accelerator, diversified our customer base with new design wins, and scaled our operations. This progress and a strong track record of technology and operational execution has helped us forge tight relationships with key AI and cloud infrastructure providers. As an example, an update on our relationship with Amazon can be found in our 8-K filing today.

Looking ahead, the combination of growing AI infrastructure deployments and the increasing complexity of high-speed interconnect architectures is poised to drive significant growth for the AI connectivity space. We estimate our served addressable market opportunity will expand by more than 10 times over the next five years to reach $25 billion. This market opportunity spans our existing and announced copper-based product families, including Ares and Taurus signal conditioning solutions, Scorpio AI fabric switches, USCXL memory controllers, and our recently announced custom solution for scale-up connectivity. While these numbers and opportunities are substantial and exciting, there is a significant amount of work that needs to be done.

Astera Labs is deeply committed to building an A-plus team with an execution mindset and capabilities essential to support our customers' technology roadmap and maximize our share of the large market opportunity ahead of us. Therefore, we are strategically investing in the expansion of our team and capability to execute against a broadening set of revenue opportunities generated by our customers. We took an exciting step in this direction this week with the announcement of a significant expansion in our global engineering operations through the establishment of an advanced design center in Israel.

Our investment in this talented ASIC engineering team substantially increases our resource pool and will help accelerate the development of cutting-edge high bandwidth and custom AI fabric and emerging AI inference technology. I would like to take a moment to thank our global team of Astera Labs employees, our partners, and our vendors who worked tirelessly in 2025 to deliver world-class AI connectivity solutions to the market. Their steadfast focus and effort have placed Astera Labs in a position of strength heading into 2026 as we continue solving next-generation AI connectivity challenges.

Finally, we announced today that Mike Tate will transition from the CFO role into a full-time role as a strategic adviser reporting to me. Mike has been instrumental in Astera Labs' growth and development since inception, and we are very grateful for his many contributions. We are also very excited to announce Desmond Lynch will join Astera Labs as our new CFO effective March 2. Desmond brings great semiconductor financial experience to the company, and we look forward to drawing on his expertise as we enter our next phase of growth. We are also thankful that Mike will continue to work full-time in his new role to support the company and ensure a smooth transition to Desmond. With that, let me turn the call over to our President and COO, Sanjay Gajendra, to outline our vision for growth over the next several years.

Sanjay Gajendra (President and COO, Astera Labs): Thanks, Jitendra, and good afternoon, everyone. Today, I want to provide an update on our recent execution followed by an overview of the meaningful market opportunities that will fuel our growth over the next several years. Astera Labs' mission is to deliver a purpose-built intelligent connectivity platform with a portfolio of solutions including silicon, hardware, and software for rack-scale AI deployments. Over the past several years, we have been building our portfolio, expanding our capabilities with foundational IP, growing our talent pool, and demonstrating the technical and operational execution which has helped us to establish multigenerational partnerships with leading AI platform and cloud service providers.

Looking ahead, we plan to deliver technology enhancements to our core portfolio of AI fabric, signal conditioners, and memory controllers while also expanding our breadth of capabilities to new categories including custom connectivity solutions, products to address memory bottlenecks in inference applications, optical engines, and other optical solutions for scale-up and scale-out networks. Let me now provide an update on our future product strategy. Starting with AI fabrics, we have been thrilled with the initial traction of Scorpio P Series and X Series for the last eighteen months.

Looking into 2026, we are poised to see diversification with our P Series solutions for head node connectivity at new hyperscaler customers in addition to the volume ramp of our X Series solutions for scale-up networking. Exiting 2026, we expect Astera Labs to continue being the market-leading provider of PCIe six switching solutions and will become a leading provider of merchant, scale-up AI fabrics. Our early engagements have been crucial to our understanding of the nuances of deploying complex AI fabrics at scale while also identifying new and innovative approaches to expand our roadmap. Furthermore, hyperscalers are demanding flexible, connectivity solutions optimized for their unique architectural approaches and application needs. IE, one size does not fit all.

These requirements lend themselves to our software-defined architecture for silicon products which will now extend to wider Redis configuration, multi-protocol support, in-network computing, and ultimately, incorporation of photonic switch to axle return links. These new requirements coupled with larger XPU cluster sizes are expanding the merchant scale-up switching market opportunity, which we believe will grow to roughly $20 billion annually by 2030. Our current roadmap across PCIe, UA Link, and platform-specific scale-up topologies put us in full position to service at least half of this market merchant silicon opportunity in the near to medium term with aspirations to address the entire market opportunity for the next several years.

Going to our signal conditioning portfolio, we saw tremendous growth in 2025 with both Ares and Taurus. Looking into 2026, we anticipate strong additional growth fueled by robust secular trends and technology evolution. Across the portfolio, we are well positioned to benefit from forthcoming protocol specification upgrades for PCIe and Ethernet that will double bandwidth capabilities and therefore drive additional reach extension content. Given the market size and growth rate, we'll continue to heavily invest in these portfolios with current development stretching out to PCIe Gen seven, UV link 200 gig, and 1.6 Ethernet applications.

We remain well positioned as market leaders in both arenas and we look to leverage our AI fabric engagements to drive additional opportunities within these categories. During Q4, we announced an expansion of our product portfolio to include custom connectivity solutions to address next-generation AI infrastructure featuring heterogeneous compute resources. Our initial prospects in the custom solution space will help to enable NVIDIA's NVLink fusion scale-up architecture for hybrid racks, and we are seeing opportunities to support additional hyperscalers to provide interconnect flexibility and optionality. Through close collaboration with hyperscaler customers and leveraging a broad range of foundational technologies and operational expertise, Astera Labs is well positioned to provide a broad set of solutions tailored to custom applications.

Next, we are working closely with key customers to define, develop, and build optical connectivity engines for scale-up networking. These silicon photonics solutions will ultimately help to enhance both our AI fabric and signal conditioning portfolios as XPU cluster density scales. We believe that transition to optical connectivity for scale-up applications will be additive to the overall AI networking market size, with copper and optical link coexisting from a system standpoint. This could more than double the merchant scale-up switching opportunity. Additionally, the discrete high-density connectors added through our XScale acquisition are seeing strong interest and are being qualified for scale-up applications.

Along with our expanding portfolio of AI solutions, we continue to make meaningful progress towards further diversifying our cloud infrastructure customer base. In 2025, we are seeing customer activity and engagement accelerate across all product categories as AI and cloud providers look to Astera Labs to help solve their next-generation infrastructure challenges. Many of these engagements have converted to design wins and will meaningfully broaden revenue across multiple hyperscalers as we exit 2026. In conclusion, Astera Labs has arrived at a critical inflection point. Strong fundamental momentum has been generated over the past several years with solid execution helping to build mature, multigeneration customer relationships.

Robust secular trends within large-scale AI infrastructure and the criticality of intelligent connectivity solutions are catalysts for a material expansion of our market opportunity. These factors give us the confidence to reinvest in ourselves, our customers, and our partners to drive the deployment of AI infrastructure. We look forward to scaling our team with the continued strong emphasis on execution and investment to deliver on our rack-scale vision throughout 2026. With that, I will turn the call over to our CFO, Mike Tate, who will discuss our Q4 financial results and our Q1 outlook.

Mike Tate (CFO, Astera Labs): Thanks, Sanjay. Thanks to everyone for joining the call. This overview of our Q4 financial results and Q1 guidance will be on a non-GAAP basis. The primary difference in Astera Labs' non-GAAP metrics is stock-based compensation, acquisition-related costs, and its related income tax effects. Please refer to today's press release available on the Investor Relations section of our website for more details on both our GAAP and non-GAAP Q1 financial outlook as well as a reconciliation of our GAAP to non-GAAP financial measures presented on this call.

For 2025, Astera Labs delivered quarterly revenue of $270.6 million, which was up 17% versus the previous quarter and 92% higher than the revenue of 2024. During the quarter, we enjoyed revenue growth from our Scorpio, Ares, and Taurus product lines supporting both scale-up and scale-out PCIe and Ethernet connectivity for a wide range of AI rack-level configurations. Scorpio P Series demand for PCIe Gen six switching applications was robust during Q4. Scorpio X Series shipped preproduction quantities during the quarter. Ares demonstrated growth during the quarter with Ares six revenue growing strongly as we began shipping PCIe Gen six SEMs for scale-up topologies in high volume. Taurus displayed strong growth during the quarter driven by the ramp of new 400 gig programs for scale-out connectivity for both AI systems and general-purpose platforms.

Q4 non-GAAP gross margin was 75.7%, down 70 basis points from the September levels primarily due to a higher mix of hardware sales. Non-GAAP operating expenses for Q4 were $96 million, up $16 million from the previous quarter due to the continued expansion of our R&D organization including the XScale acquisition that closed during the quarter. Within Q4 non-GAAP operating expenses, R&D expenses were $70.7 million, sales and marketing expenses were $11.1 million, and general and administrative expenses were $14.2 million. Non-GAAP operating margins for Q4 were 40.2%, down 150 basis points from the previous quarter. Interest income in Q4 was $12 million. Our non-GAAP tax rate for Q4 was 13%.

Non-GAAP fully diluted share count for Q4 was 181.2 million shares and our non-GAAP diluted earnings per share for the quarter was $0.58. Cash flow from operating activities for Q4 was $95.3 million and we ended the quarter with cash, cash equivalents, and marketable securities of $1.19 billion. Now turning to our guidance for 2026. We expect Q1 revenues to increase to within a range of $286 million to $297 million, up roughly 6% to 10% from the fourth quarter levels. For Q1, we expect Ares growth to be driven by a variety of AI platforms across both scale-up and scale-out connectivity.

Taurus growth is expected to be driven by an increase in volumes of 400 gig designs for AI scale-up connectivity. Scorpio growth will be primarily driven by the continued deployment of our P Series solutions for scale-out applications and initial volumes of our Scorpio X Series for scale-up switching. We expect Q1 non-GAAP gross margins to be approximately 74%, with the increased mix of our hardware-based solutions in the quarter. We expect first-quarter non-GAAP operating expenses to be in the range of approximately $112 million to $118 million. As previously outlined, our customers continue to present us numerous large revenue opportunities for AI connectivity solutions. The planned increase in operating expenses will enable us to capitalize on these opportunities.

This guidance includes expenses related to an AQUI hire transaction we closed this quarter, which helped us rapidly scale our recently announced Israel design center. Interest income is expected to be approximately $11 million. Our non-GAAP tax rate should be approximately 12%. Our non-GAAP fully diluted share count is expected to be approximately 184 million shares. Adding this all up, we are expecting non-GAAP fully diluted earnings per share to be approximately $0.53 to $0.54. Lastly, I would like to welcome Desmond as our new incoming CFO. I believe he's a perfect fit for the company at this exciting stage of the company's growth trajectory.

I look forward to continuing to support the company in my new role while also ensuring a smooth CFO transition. This concludes our prepared remarks. And once again, we appreciate everyone joining the call. And now we will open the line for questions. Operator?

Questions & Answers

Blayne Curtis (Jefferies): Congrats on the results and congrats, Mike, on the new role. I just want to ask you, obviously, this $6.5 billion is a huge number. I wanted to ask you about what seems like one of the biggest debates still is the acceptance of UA Link for these next-gen designs. You mentioned two lead customers mentioning it. I'm just kind of curious, is there any better visibility you can think about, you know, that mix between hybrid boxes and native UA Link for these Azure lead customers?

Jitendra Mohan (CEO and Co-founder, Astera Labs): Thanks, Blayne. So, yes, clearly, AWS announced at re:Invent that the Phranyon four, which is slated to ramp in 2027, will support UA Link, which was a very positive endorsement of UA Link, as well as support for NVLink fusion. Subsequently, AMD has also announced that their MI 500 series will also support UA Link, again in 2027. So these are two very good public announcements in support of UA Link, and there are several other discussions that are ongoing. The UA Link ecosystem is coming. We've got great availability of IP, a lot of vendor announcements, and so on. And so we will be ready with our UA Link solution to intercept the ramp that happens in 2027. Now for NVLink fusion, this also represents a meaningful opportunity for us. And I do want to call out the fact that both Amazon, the hyperscaler, as well as NVIDIA have chosen Astera Labs as a partner. And that's a very important statement in terms of the trust that they place in Astera Labs. So the opportunity itself is to take the native protocol that the XPU or the ASIC speaks and translate that into NVLink. This is a sophisticated function, and we have a solution that we will deploy to address this. And given the fact that the solution attaches to the XPU on a one-to-one basis, we anticipate the overall revenues to be in line with the switch opportunity where we might be selling a UA Link switch. So all in all, the exact mix of how much NVLink fusion would be deployed versus a native solution would be deployed remains to be seen. But for us, the opportunity is roughly the same for both.

Mike Tate (CFO, Astera Labs): And just to point out, we did file under an 8-K a warrant agreement with Amazon today. So it demonstrates our strong relationship with Amazon. Under the terms of the warrant agreement, we're issuing 3.3 million warrant shares that are based upon the achievement of performance conditions comprising specified tranches of payments to purchase up to $6.5 billion of our smart fabric switches, signal conditioning products, and also our optical engine solutions.

Blayne Curtis (Jefferies): I actually wanted to ask you on that last part. I thought it was interesting you've been talking more about optical. It's part of that warrant agreement. Can you maybe just talk about you talked about it doubling your TAM, maybe timing on that?

Jitendra Mohan (CEO and Co-founder, Astera Labs): So we think that when we that the optical for scale-up, the timing should be somewhere in 2028. We do believe that the initial deployment for optical technology CPO might happen with scale-out, and that might precede the deployment of scale-up.

Joe Moore (Morgan Stanley): Great. Thank you. You talked a little bit about the OpEx increase. I guess it's a pretty big step function up. Can you talk about was the acquisition a part of that? And then, as you look out to these optical scale-up aspirations, I assume that's expensive. Just kind of any incremental sense of why the OpEx is coming up so much so quickly?

Mike Tate (CFO, Astera Labs): Yeah. Joe, over the last couple of quarters, we've been having a lot of advanced dialogue with our customers, and they're presenting us with significant revenue opportunities that we really feel now is the time to really invest in. As we spoke on the call, the TAM is much bigger than we originally expected just when we measured it twelve, eighteen months ago. So we are increasing our investments to pursue these opportunities. Last quarter in Q4, we did close the XScale acquisition, so now we have a full quarter in Q1. And then just recently in this quarter, we closed another AQUI hire. We got a very sizable capable team to help us scale up our new Israel design center where we just also brought in very exciting, capable leadership as well. So this is all to pursue these opportunities that our customers are pushing us to develop for them.

Joe Moore (Morgan Stanley): Okay. Thank you. And then you talked about UA Link. I know there's also a fair amount of noise over the course of the quarter about ESON, Ethernet scale-up. Can you just kind of talk about the handicapping of those two technologies and how you see those technologies coexisting going forward?

Jitendra Mohan (CEO and Co-founder, Astera Labs): The scale-up networking, Joe, remains a very large market, and it'll include proprietary approaches such as NVLink or Google's API. And we'll also include the merchant and standard approaches such as PCIe, UA Link, Ethernet, and ESON. What we are seeing is that hyperscalers are going to leverage the type of solutions that their software stack is designed for. So, for example, if a customer is using a memory-centric protocol, like NVLink or like PCI Express, they are likely to continue to use that and transition to UA Link as those solutions become available. At the same time, the customers that are using Ethernet are likely to stay with Ethernet. This is overall a very big market, and there is a lot of room for different solutions to coexist. And we do indeed think that these solutions will coexist. We are primarily developing solutions where our customers are asking us to, which happens to be PCI Express, UA Link, and now increasingly on NVLink fusion.

Vivek Arya (Bank of America): Thanks for taking my question. On Scorpio, I'm curious if it achieved that 20% of sales. I think, Mike, that you had set in Q4. And if it did, is this kind of $200-ish million run rate, where do you see the outlook for Scorpio at a high level for 2026?

Mike Tate (CFO, Astera Labs): Scorpio continues to perform very well. It just launched for the first time in Q2 of this year, and it did break above our 15% for the year. And it grew very nicely in Q4. This is all on the Scorpio P primarily, which is scale-out switching. We did say we just started to ship initial volumes here in this Scorpio X, and then that will have increasing volumes as we enter into 2026, with a much more material ramp in the back half of the year. So, Scorpio is our biggest TAM right now, so it's growing at a very fast clip as a result of that.

Vivek Arya (Bank of America): Okay. And for my follow-up, Jitendra, how do you see your content as NVIDIA moves to the Vera Rubin generation versus the Blackwell generation? And how do you see whatever the NVIDIA racks are deployed in the Vera Rubin, do you think they let them capture more of their proprietary content, or do you still see enough opportunity for Astera wherever Vera Rubin is installed?

Jitendra Mohan (CEO and Co-founder, Astera Labs): The opportunity for Astera arises when our customers do custom deployments of the Grace Blackwell or in the future, Vera Rubin reference design. We have very minimal opportunity with the reference design itself. The initial ramps that Mike has referred to were happening in part of these customized deployments of the Grace platform by our lead hyperscaler customer. And as the hyperscaler customer announced at the public event, they want to continue to deploy Vera Rubin also as a custom deployment. So we will certainly do our best to make sure that we are part of that solution as well as the design transition from Grace Blackwell to Vera Rubin.

Tore Svanberg (Stifel): Yes. Congratulations on the results and, Mike, congratulations on your new role. I had a follow-up question for Sanjay. Sanjay, when you talked about the SAM by 2030, $20 billion, you'll be able to get half of that today. But you said PCIe, UA Link, and then platform-specific scale-up topologies. And I'm just curious, is the world changing a little bit where there's less reliance on standards and there's more platform-specific scale-up initiatives? And is that also why you are stepping up your OpEx as much as you are this quarter?

Sanjay Gajendra (President and COO, Astera Labs): If you think of a scale-up topology, you're interconnecting accelerators. And to that standpoint, the accelerators could be a merchant silicon or could be an internal custom ASIC. And because these are homogeneous planes, and everyone is trying to eke out the maximum amount of bandwidth and performance on the connectivity side, you will expect quite a bit of customization that will be needed. With Astera, we are unique in the sense that our fabrics are designed to be software-defined. In the sense that they can be updated to do certain things that are custom and optimized for specific scale-up topology. So what we have tried to do is not do one silicon for every opportunity, but to be able to leverage the same piece of silicon but to be able to customize that in many different ways. In some ways, we are making sure that the investment that we do is managed, and the differentiation comes from software rather than keep doing a unique silicon for everyone. The thing that we are seeing is a tremendous influx of opportunities. And that's largely coming from the fact that we spent about twelve to fifteen months being in the scale-up domain, and we have learned a lot. There's a lot of unique things that become critical when you're designing scale-up fabrics. And that learning has enabled us to better present our solution as well as the feature set that we're incorporating in our new product line. And those are gaining interest and support from several new customers. And to support that is where we see a need to step up our R&D. Meaning the time to invest is now.

Tore Svanberg (Stifel): That's great color. Thank you. And as my follow-up for you, Jitendra, just to clarify, I think you said Scorpio X. So pre-production still first half of this year, then you start the ramp with your lead customer second half. But I think you also said that you expect to have some pre-production with additional customers beyond your lead customer in the second half with ramps in '27. Just want to make sure that I got that right.

Jitendra Mohan (CEO and Co-founder, Astera Labs): Yep. That's correct. There is a lot of traction for the Scorpio X family. For customers who are trying to use PCI Express memory-centric protocol for their scale-up. We are filling so many different calls, we expect some of those to get qualified towards the end of this year and then ramp in 2027.

Ross Seymore (Deutsche Bank): Hi, guys. Thanks for asking the question. And Mike, congrats on the new role. I guess my first question is on the OpEx side of things. Basically spending about $100 million run rate more than you were prior. I get that the revenue opportunity is larger, but can you give us a little bit idea on what the time to revenue would be in this when you say now is the time to invest?

Mike Tate (CFO, Astera Labs): There's a range, but the technology that we're developing does have a longer lead time there, but there are new opportunities that could be turned into silicon in relatively short order, and then you have the qualification process with the customers. But you could see, from start to revenues in eighteen, twenty-four months on the earlier side. But also keep in mind, we've been looking at optical from the inception of the company knowing that at some point it was going to be very important as a connectivity supplier. So we've been putting the pieces together internally and then including the new acquisition that we had last year. We're building something internally that other companies are paying billions of dollars for to get externally. And by doing this, we're doing it the right way, and we're building it the Astera way along with the input from our customers.

Ross Seymore (Deutsche Bank): For that, Mike. I guess as my follow-up on to the Scorpio family, I believe you said it crossed 15% of sales in 2025. So I just wanted to clarify if that was true. But perhaps more importantly, any sort of bogeys as far as the growth rate this year? I believe in the past, you talked about it would cross over and become your biggest product line at some point this year. Is that still the case?

Mike Tate (CFO, Astera Labs): We originally set out for a 10% bogey. We did cross above 15% for 2025. And, again, that's all just P Series. X is for scale-up is a much bigger, larger TAM for us, and we're starting to ship initial volumes in the first half, but the more material step up in the back half. So the combination of those two will put us on a trajectory for it to be our biggest product line. But Ares and Taurus and Leo are all growing as well. So it's hard to know exactly when to cross over. But definitely, at some point, it will. And it's going to drive very good revenue growth for us.

Sebastien Cyrus Naji (William Blair): Great. Thank you for taking the question and congrats on the results. Just in terms of the more customized solution that you're building, is it right to think that your average ASP for the solution or the content opportunity should go up meaningfully versus some of your existing products? And is there anything to call out in terms of maybe a different margin or different profitability profile for those solutions?

Jitendra Mohan (CEO and Co-founder, Astera Labs): For the customized solutions that we build, for example, the NVLink fusion that we noted, the engagement model tends to be different. But the attach rate will also tend to be higher. So I think from a volume standpoint, it will be at a certain rate. But the ASPs there will be some considerations that have to be applied because there will be blocks that come from the partners that we work with. So at the end of the day, when it comes to our revenue content, both based on a native switch versus a custom solution, the things sort of even up. Where on the native switches, it tends to be one switch being shared across a few accelerators. Whereas in the custom solution type of products, you're doing it one per accelerator. Which means that you'll have a higher attach rate although the ASP might not be at the same level. And, in general, a helpful thing that we found is every generation of XPU, our content has grown up so far. And we continue to head in that direction by having more dollar content for XPU generation.

Sebastien Cyrus Naji (William Blair): Got it. Okay. That's really helpful. And maybe as a quick follow-up just on the Taurus line. Is there a way to think about how much of the strong growth you're seeing there is coming from just strong underlying market growth versus Astera's ability to gain share in that market?

Jitendra Mohan (CEO and Co-founder, Astera Labs): It's both, but definitely, the speeds have gone up from 400 to 800 gig. The need for active components, whether it's onboard or within cable, in the form of AEC is growing. So that fact is not changing. Our business model is slightly different as probably you're aware. We don't do the whole cable. We do the modules that go inside the cable assemblies and rely on our cable partners to provide the at-scale deployment with multiple vendors supporting the same opportunity. So what I would say is that we are seeing that transition happening. You can see that with some of the numbers that we shared today. Our total revenue has gone up in Q4. And, generally, for the whole year, it's about four times. So we expect that trend to continue. As volume picks up even for 800 gig, what we're expecting is that Astera will come in strong. With multiple cable suppliers using our module to support the high volume band.

Sean O'Loughlin (TD Cowen): Good afternoon, guys, and thank you for letting me take the question. Wanted to ask on the warrant agreement and maybe get some background on sort of one, there's a period of exercise to 2033, I believe, and then, there's a dollar amount associated with it. What drove the two companies to reach the agreement? And should we think about this as maybe incremental to what you already had expected to be doing with that customer over that time frame?

Mike Tate (CFO, Astera Labs): We can't go into much more detail than what we publicly disclose. In the 8-K, we did file the full warrant agreement, so you can kind of get some of the more material terms out of that filing. It does demonstrate the strong relationship that we have with Amazon. This is a follow-on warrant. We've had a previous warrant agreement in place, and what happens is the warrants are earned as revenue milestones are achieved, which is the $6.5 billion that we outlined. To account for the warrant, you do take a non-cash charge for the value of what vests, and that goes directly against revenue and effectively directly against gross margins as well. So as the warrants are achieved, we are kind of modeling a non-cash hit to gross margins of about two points a quarter starting kind of in the Q2 time frame. But the warrants have a life like airline for seven years.

Sean O'Loughlin (TD Cowen): Great. Thanks. And if I could ask another unfortunately financial follow-up. On the NVLink Fusion agreements, what is that financial arrangement look like? Is that a license that the hyperscaler is paying directly to NVIDIA? Or does that get incorporated into the ASP and the margin profile of that product?

Jitendra Mohan (CEO and Co-founder, Astera Labs): We'll just maybe can't answer that question just given all the NDAs and other things that we need to be respectful of. In general, what I would say is that it opens up a completely new set of opportunities for us to play in the NVLink ecosystem, which we did not have a place so far. So to that standpoint, this is additive to everything that we're talking about. In terms of the exact business model, I think we'll let hyperscalers or NVIDIA provide more color.

Karl Ackerman (BNP Paribas): Yes. Mike, you know that some of the increase in OpEx is being driven by your investments in optical and followed through acquisition of AIX Scale. Do you anticipate your customer opportunity for integrating your optical eyeglass cover technology is larger for a switch portfolio than your serial conditioning and SEM products? And I have a follow-up.

Jitendra Mohan (CEO and Co-founder, Astera Labs): I would say that the opportunity for including optical into scale-up is actually a very large opportunity. Probably larger than the signal conditioning opportunity that we have. Of the order of what we are saying for scale-up connectivity. We have not quite sized it up exactly, but it is a very large opportunity. And we are working very closely with our customers to understand what their requirements are and what their time frames are, and we'll be ready for those. We believe for scale-up in particular, that's likely to be in 2028. The increase in investments we're doing, like Mike outlined, these are also servicing opportunities on the fabric side, which are much more based upon existing engagement. And as customers are seeing the value of what we offer, they're coming back with requests for additional lane count or Vedic configurations or features and things like that. So the investment that we're talking about, including the Israel team that we set up, which will focus on AI fabrics, it's all being done in a way that we get the near term, midterm, and long-term growth setting us up nicely for building on the momentum we have and getting to a different scale from a revenue standpoint.

Karl Ackerman (BNP Paribas): Got it. Very helpful. You indicated that you have Scorpio P design wins now with three hyperscalers, two of which are new. Are your Scorpio P designs based on custom compute designs, or are they also being designed on custom GPU racks as well? And then, clearly, you're having traction here, so you can perhaps address the opportunity that you see with Scorpio P extending into 2026.

Jitendra Mohan (CEO and Co-founder, Astera Labs): Scorpio P has been mostly going into scale-out use cases. Now that we have ramped the chip in reasonable volume over the last three, four quarters, we are seeing additional customers, specifically, like you called out, two new hyperscalers that have adopted it. Go into production a little bit later towards the end of this year. These design-ins are supporting platforms that are both merchant GPU-based as well as custom accelerators. And we do expect these to add meaningful revenue for us in 2027. Beyond this, for the P Series, ever since we announced, it's been attracting a lot of customer interest and traction, and we do have several design wins on that in different lane count configurations and so on. So it continues to be a device that is still probably the only one that's in high volume production with our Gen six switches. So it is serving many customers and use cases.

Srinivas Pajjuri (RBC Capital Markets): Thank you. And let me echo my congrats, Mike. My question, you know, there's been a lot of skepticism about the growth of Ares retimers, and you continue to show that this segment continues to grow, and you're projecting growth for this year as well. If you could talk to us about what's driving that growth? Is it primarily the units? Or is it PCIe six transition? Or new customers? And then as we go into '27, '28, how should we think about any potential implications as the market goes from copper to optical?

Jitendra Mohan (CEO and Co-founder, Astera Labs): PCI Express is really the nervous system inside of a server. All of the significant components, whether it's a GPU or a CPU or a NIC card, they talk to each other over PCI Express. And we established an early lead in PCI Express with Gen four, Gen five, and now extending that into PCI Express Gen six. We see not only the continued growth in the chip down applications, but we also see more growth of PCI Express in cabled applications where we set our smart cable modules. That does give us an uplift in the ASP. These devices are used in scale-up applications. And again, scale-up is a very rich opportunity where we have multiple connections and a lot of them. So we are definitely benefiting from that trend with PCI Express going from Gen five to Gen six. Now your question about transition from copper to optical. Most of our customers will continue to stay with copper for as long as they can. We will reach a stage where maybe the reach or the bandwidth is just high enough and is not able to be supported by copper. And in those cases, we do expect a transition to optical, but copper and optical will continue to coexist for a long period of time. The transition to optical will likely come in the form of first, pluggable optics maybe followed by a new package optics and eventually the holy grail, which is the co-package optics. But we expect to see the first deployments of co-package optics for scale-up sometime in the 2028 time frame.

Srinivas Pajjuri (RBC Capital Markets): Okay. Got it. And then the other debate, Jitendra, is obviously UA Link versus ESON. If the market moves more toward ESON, you have the capability to pivot to ESON? And if so, how quickly can you do that?

Jitendra Mohan (CEO and Co-founder, Astera Labs): I would say that we are much closer to the action. So we understand who's doing what largely for the initial deployments of the new scale-up protocols, whether it's UA Link or Ethernet or ESON. From a capability standpoint, it's definitely within reach. We can, if you choose to design an ESON-based solution, we can. However, as has been the trend with Astera, we listen to our customers very closely. And so far, everybody is telling us to focus on UA Link, and that's what we are focusing on. If things were to shift towards ESON, we certainly have the capability. Our aspiration really is to address the full connectivity TAM and not just limit to any one particular protocol.

Quinn Bolton (Needham, via Robert): Hi. This is Robert on for Quinn. Thank you for taking the questions. First, wanted just to double click more onto the AEC product offering. Can you maybe discuss how qualification for your 800 gig AECs are progressing? And do you expect to be shipping 800 gig AECs to multiple hyperscalers this year?

Jitendra Mohan (CEO and Co-founder, Astera Labs): 800 gig is obviously starting to ramp up right now. We're very closely engaged with that from a qualification process standpoint. Given our business model, which is slightly different like I highlighted early on, we come in as the volume starts expanding. So you can expect a similar transition happening to our business as well with more deployments for 800 gig. 800 gig, like you highlighted before, is broad-based, meaning there are multiple customers that are using AEC for 800 gigs. And those are opportunities that we expect to gain from a revenue standpoint.

Robert (Needham): And then just quickly on Scorpio P. You expect these additional P Series customers to reach kind of the size and scale down the line as volume ramps with them in the second half of the year and beyond? Can these new customers be as big as your main hyperscaler there?

Jitendra Mohan (CEO and Co-founder, Astera Labs): Yes. There is a potential for that. At least the ones that we called out now are noted many P Series opportunities and design wins we have. But specifically to the hyperscale opportunities that we called out, these are mainstream use cases. So we do expect them to have a revenue impact like what we've had so far.

Tom O'Malley (Barclays): Hey, guys. Thanks for sneaking me in. Just had a quick one and then a longer-term one. So you announced two new hyperscalers, PCIe late in '26, you're saying revenue '27. Are those US hyperscalers? Are those Chinese hyperscalers?

Jitendra Mohan (CEO and Co-founder, Astera Labs): US.

Tom O'Malley (Barclays): Thanks. And then on the longer term, I think you mentioned on the call about the MI 500 series supporting UA Link. Obviously, the 400 series supports UA Link, but it's over Ethernet. Are you saying that the 500 series will be native UA Link? Is it still going to be Ethernet supporting UA Link? Obviously, that's a big difference in what switches you're using.

Jitendra Mohan (CEO and Co-founder, Astera Labs): I don't want to speak for the AI customer. But if you look at some of the publicly released information, they have said that they will continue to support both. But they've also said that they believe UA Link native is the highest performance scale-up protocol.

Operator: There are no further questions at this time. I'll now turn the call back over to the presenters for any closing remarks.

Jitendra Mohan (CEO and Co-founder, Astera Labs): Thank you, and thank you, everyone, for your participation in questions. Please refer to our Investor Relations website for information regarding upcoming financial conferences and events. Thanks so much. Have a great day.

Operator: This concludes today's conference call. You may now disconnect.