Good day, and thank you for standing by. Welcome to the Nautilus Biotechnology Q1 2024 Earnings Conference Call. At this time, all participants are in a listen-only mode. After the speaker's presentation, there will be a question-and-answer session. To ask a question during the session, you will need to press star one, one on your telephone. You will then hear an automated message advising your hand is raised. To withdraw your question, please press star one, one again. Please be advised that today's conference is being recorded. I would now like to hand the conference over to your speaker today, Ji-Yon Yi, Investor Relations. Please go ahead. Thank you. Earlier today, Nautilus released financial results for the quarter ended March 31, 2024. If you haven't received this news release or if you'd like to be added to the company's distribution list, please send an email to investorrelations@nautilus.bio. Joining me today from Nautilus are Sujal Patel, Co-founder and CEO, Parag Mallick, Co-founder and Chief Scientist, and Anna Mowry, Chief Financial Officer. Before we begin, I'd like to remind you that management will make statements during this call that are forward-looking within the meaning of the federal securities laws. These statements involve material risks and uncertainties that could cause actual results or events to materially differ from those anticipated. Additional information regarding these risks and uncertainties appears in the section entitled Forward-Looking Statements in the press release Nautilus issued today. Except as required by law, Nautilus disclaims any intention or obligation to update or revise any financial or product pipeline projections or other forward-looking statements, whether because of new information, future events, or otherwise. This conference call contains time-sensitive information and is accurate only as of the live broadcast, April 30, 2024. With that, I'll turn the call over to Sujal. Thanks, Ji-Yon, and welcome to everyone joining our Q1 2024 earnings call. Q1 was a highly productive quarter for Nautilus as we continue to execute on our vision to establish a new gold standard for the creation and comprehensive analysis of high-value proteomic data. In order to deliver a range of long-discussed and long-desired improvements in human health, biomedical research needs a dramatic acceleration in target identification and therapeutic development. But as they have for many years, researchers remain impeded by the lack of sensitivity, scale, and reproducibility of traditional protein analysis methods and of emerging affinity-based and peptide sequencing methods. We believe a fundamentally new approach is required to overcome these limitations and to unlock the potential value of the proteome, something we continue to view as one of the most significant untapped opportunities in biological science today. We and the proteomics KOLs, with whom we regularly speak, understand how important intact single-molecule protein analysis and the Nautilus platform could be to their explorations of the proteome. They know that deeper, richer proteomic data could one day make it possible for researchers to more quickly identify the mechanisms of action of diseases ranging from cancer to Alzheimer's. Understanding those mechanisms will be key to identifying effective treatments. Interestingly, many of these KOLs maintain a heavy focus on the use of mass spectrometry for proteomics. The positive attention our platform continues to receive from them is a good sign for things to come with this critically important and influential buying audience. As you'll hear from Parag in a few moments, those KOLs are encouraged by the data we shared at the recent US HUPO conference, and several of them have begun imagining specific initiatives against which they plan to apply our platform as part of our early access program. As we previously shared, the EAP will launch in the months leading up to commercial availability in 2025. Never intended to be a significant revenue driver, the program will serve as a high-value means by which to generate data to support both internally and externally generated scientific papers, customer grant proposals, and will get meaningful data into the hands of potential future customers. We will keep you informed as we get closer to launching the EAP. I remain pleased with the progress that has been made in development activities surrounding each of the core components of the platform, including the core reagents, sample prep, affinity reagent probes, chips, flow cells, the instrument, and software. For more on those and other R&D-related updates, let me now turn the call over to Parag. Parag? Thanks, Sujal. Overall, we continued to make solid progress against our core development goals in Q1. We remain incredibly focused on increasing scale, stability, and reproducibility across our consumables, assay, and platform, and continue to see meaningful gains along those dimensions. This progress goes hand in hand with advancing the reliability, quality, and customer readiness of our instrument and software. Platform stability enhancements, increased consumable scale and quality, and increased instrument availability and capacity have allowed for a significant increase in the number of high cycle number protein decoding experiments that we can initiate and complete successfully. In fact, we completed nearly three times the number of experimental runs in Q1 as we did in Q4 of last year. This increase in experimental scale is essential as we continue to optimize all aspects of our platform towards launch targets.... The increases in experimental scale and assay robustness have enabled us to increase the complexity of the model systems that we are using for ecosystem-wide optimization. We are excited to be continually increasing the complexity of these model systems to include an increased diversity of proteins across wider ranges of concentration. We are also excited about an increase in focus on activities critical to our commercial launch, such as pre-verification studies of key platform characteristics, such as reproducibility and sensitivity. From the standpoint of sharing the foundational elements of our platform with the broader proteomics community, a highlight of Q1 was our participation in the annual conference of the US Human Proteome Organization, US HUPO. US HUPO attracts many of the types of researchers and organizations that could be potential users of our platform. It was exciting to see that this year's conference attracted approximately 600 attendees, more than doubling the attendance of just two years ago. This increase in participation points clearly to increased interest in the proteomics space overall. From our standing room only lunch and seminar, to our many posters and significant traffic at our booth, HUPO provided an extraordinary opportunity to share with the community additional progress on the experimental implementation of PrISM, further detail on our multi-affinity probe pipeline, and on computational methods to estimate false discovery rate. In addition to continuing to educate the community about how our platform works, our goal this year was to begin introducing experimental data from our pre-verification studies that demonstrate the key performance characteristics of the platform. This new data on both broad scale and proteoform analysis generated a great deal of interest and questions from attendees. Specifically, we shared data showing ultrasensitive and repeatable single-molecule quantification of the protein transferrin. One of the key differentiators of our platform is its incredible sensitivity. This is critical for finding diagnostic and prognostic biomarkers that can be indicative of diseases at their earliest and most treatable stages. We demonstrated lower limits of quantification in the high-yoctomole to low-zeptomole range. This represents a more than five orders of magnitude better sensitivity than typical mass spectrometric methods. We also shared how, by exploiting the ability of our platform to iteratively probe individual molecules, we were able to quantify the abundances of 32 distinct tau proteoforms. This measurement is not possible on both traditional and emerging peptide-based platforms. We showed the ability to also do measurements of tau from complex samples, such as enriched cell lysates. These results lay the foundation for future assays that enable more detailed investigation into molecular mechanisms of tauopathies like Alzheimer's disease, as well as potentially opening new frontiers for more specific diagnostics. Beyond tau, we showed how the platform can be applied to measure EGFR proteoforms. These findings are the result of the targeted proteoform studies that we have been pursuing in partnership with Genentech and Amgen. I and the other Nautilus in attendance sensed a significant shift in the depth of the questions we received from attendees during the event, clearly indicating an increased understanding of and enthusiasm for the Nautilus platform. Our booth was packed with researchers eager to understand that the platform might be well suited to addressing their specific research questions. One of my most enjoyable conversations was with a researcher who presented work on a new Alzheimer's disease biomarker that he believes is the result of changes the abundance of a specific proteoform that is challenging to measure using traditional immunoassays. It's exciting to see how the additional data we've shared from the Nautilus platform is encouraging researchers to expand their proteomics horizons. With that, I'll turn the call back to Sujal. Thanks for the update, Parag. I could not agree more with Parag's takeaway from the event. Having been there myself, I heard so many things that convinced me that momentum for the space and for Nautilus are building in lockstep. Researchers are beginning to really focus on the role that next gen technologies like Nautilus will play in creating advances in basic biological research, enabling them to make a substantial impact on the efficiency and cost effectiveness of biomarker discovery and drug development. Our next significant opportunity to educate the community about the platform and our progression towards commercial availability will occur when Nautilus participates as a top-level sponsor of this year's HUPO World Congress, October 20 through 24 in Dresden, Germany. We look forward to that event as it aligns closely with the timing of when we anticipate having updates on both our scientific and business progress. When it comes to educating the marketplace and bringing the community along on the Nautilus journey, you've heard Parag say many times how committed we are to being as transparent and fulsome as we can in our communications. To that end, and as a means of sparking interesting conversations about proteomics and its future, this quarter, we introduced the Translating Proteomics podcast and video series. Hosted by Parag and Dr. Andreas Huhmer, a 20-year Thermo veteran and now our Senior Director of Scientific Affairs, the show is not a deep dive on the Nautilus platform. Rather, it explores the scientific underpinnings of proteomics and challenges the audience to imagine what may be possible in a future where proteomic data is more easily and cost-effectively created. We're heartened by the warm reception to the show's first few episodes and encourage anyone who wants a better and broader understanding of the space to subscribe and participate with suggestions for topics they'd like to see addressed. For a look at our financials, let me now hand the call over to Anna. Anna? Thanks, Sujal. ...Total operating expenses for the first quarter of 2024 were $21.6 million, up $3.5 million compared to the first quarter of 2023, and $1.6 million above last quarter. This 20% increase in operating expenses year over year was driven primarily by continued investment in personnel and their activities towards the development of our platform. Research and development expenses in the first quarter of 2024 were $12.9 million, compared to $10.9 million in the prior year period. General and administrative expenses were $8.7 million in the first quarter of 2024, compared to $7.2 million in the prior year period. Overall net loss for the first quarter of 2024 was $18.7 million, compared to $15.0 million in the prior year period. Turning to the balance sheet, we ended the year with approximately $248 million in cash, cash equivalents, and investments, compared to $264 million at the end of last quarter. We continue to expect our total operating expenses to grow by approximately 25% from 2023 levels and gross in spend to steadily increase as we prepare for our commercial launch. We continue to anticipate our cash runway to extend into the second half of 2026. We remain focused on running a very capital-efficient business with tight management of our expenses, while making the investments necessary to drive our scientific progress forward. Looking ahead, we are confident that we are strongly positioned to execute our strategy efficiently to launch our game-changing proteome analysis platform. With that, I'll turn it back to Sujal. Thanks, Anna. To wrap things up, we continue to make solid progress against our development and business goals, and for that, I want to thank the entire Nautilus team. We're excited about what's to come, and we look forward to providing additional updates on our next call. With that, I'm happy to open the call up for questions. Operator? As a reminder, to ask a question, please press star one one on your telephone and wait for your name to be announced. To withdraw your question, please press star one one again. Please stand by while we compile the Q&A roster. Our first question comes from Yuko Oku with Morgan Stanley. Your line is open. Hi, this is Madison on for Yuko. Good morning. Just wanted to maybe start off with, sorry if I missed this on the call, but just wanted to make sure, so on the timeline, you guys are still targeting 2025 expected launch, correct? And then just any updates, updated thoughts on further refined timelines beyond 2025, and if there's, like, particular milestones that you think you need to achieve before we have any clarity on specific launch timing, and if there's any steps you're taking to ensure, like, no, no more slippages beyond 2025. Yeah. So, the last time we gave timeline guidance was on our previous call, which was our fiscal year 2023 call. We didn't make any updates at this time. Things continue to progress on the timeline that we outlined earlier. We don't have any greater specificity at this point, but one of the things I think I said in Q&A in the last call, which is still true, is that as we get to the point where we're able to measure a significant number of proteins, whether it be 1,000 or 2,000 or something in that range, from cell lysate and do that in a reliable and reproducible way, that'll be a key line for us where we will be able to likely project a little bit with a little bit more specificity what the remaining timeline looks like, as well as it'll be a good opportunity for us to walk through with the scientific community, our potential customers in the street, the final or near final specifications of the product and pricing. So stay tuned. Okay, that's good to hear. And then maybe just turning to HUPO data. I know you've shared data that demonstrates the platform's ability to quantify mixtures of tau proteoforms that you guys were talking about. So stepping back, I was just wondering what are some, like, biological questions or use cases that you could be answered with this ability? I think you mentioned Alzheimer's on the call. And for context, could you share how you would go about characterizing proteoform mixtures on a mass spec, for example? Sure. I'll take that. This is Parag. When we think about proteoforms, generally, we think about them as providing additional detail and specificity about the function of a protein, such as tau. So for instance, the first level of regulation is just by whether tau is present or absent, the second being how much is present, and then the third level of detail that we're really getting to for the first time is studying how tau is modified and what the prevalence of the different modified proteoforms are, that may have, for instance, three different phosphorylation sites that have been populated and an additional splice variant. The way that you would use this data is really in two places. The first is understanding the biology of the disease. Right now, because this hasn't been measurable before, we really don't understand how these proteoforms contribute to driving either the initial onset of diseases like Alzheimer's or their progression. ... But it's hypothesized that different people may have different distributions of these variants that may drive their disease to progress more quickly or more slowly. Additionally, they may be used in the periphery as biomarkers to delineate where the disease course is to determine whether or not particular therapeutics might be effective. And so there's a tremendous amount of excitement about being able to provide that level of detail into the disease and its mechanisms and progression. Doing a mass spectrometer, the traditional method of mass spectrometry, shotgun proteomics, or which looks at peptides, is unable to measure proteoforms at all. Another method, which has been pioneered by our collaborator, Neil Kelleher, is called top-down mass spectrometry, and that method is able to generally identify the masses of different proteoforms, and from those masses, infer what proteoforms might be present. However, our method is extremely direct as well as single molecule, instead of looking at large ensembles of molecules. Got it. That's really helpful. Thanks. Thank you. One moment for our next question. Our next question comes from Matt Sykes with Goldman Sachs. Your line is now open. Hi, this is Evie on for Matt. Thanks for taking my questions. So I know in the past you've mentioned antibodies as being one of the final pieces needed to address before the launch. Can you give an update on how you're working through that, and then any other areas of improvement before the launch? Do you want to tackle this one first, and I'll add any color at the end? Sure. So as we've talked about in the past, thank you for the question. Really, there are a couple of key areas that we've been focused on. The first is scale, and that applies to the reagents aspect of the consumables, the chips and flow cells, as well as the instruments themselves. And scale has two different pieces. The first is just, are we able to manufacture in sufficient amounts of these consumables with sufficient quality to build a reproducible assay? The second aspect of scale has to do with the ability to execute successfully on large cycle experiments, dozens, hundreds of cycles. We've demonstrated at HUPO data showing that the proteins stay immobilized on the chip over 100 cycles, that we don't see substantial degradation in binding rates that might indicate damage to the proteins. We additionally demonstrated we don't see significant buildup on the surface of the chips. So those are two key aspects of scale that we're continuing to be focused on, as well as robustness. Alongside those development efforts are traditional things like guard banding, to understand what the specifications need to be of each of the components in the system. When we talk about the reagents themselves and the affinity reagents, what we're focused on there is really about the characterization of the affinity reagents to understand very specifically, for each affinity reagent, what does it bind to? How well does it bind? What are its other biophysical characteristics? Is it a little sticky? Is it easy to produce? So there are a number of aspects to the affinity reagents that really get to understanding the individual behavior of each reagent at a level of detail that is not typical for a standard affinity reagent workflows. Okay, great. That was super helpful. Then how are you shoring up your supply chain ahead of the launch, sort of on the back of that question, and also balancing your cash runway through the second half of 2026? Yeah, that's a good question, Evie, and I'll take that one. This is Sujal. You know, from a supply chain perspective, Let's start on the electronic side. On the electronic side, we continue to purchase ahead and manage inventory of some of the longer lead time parts in our instrument. We continue to ramp up from a contract manufacturing perspective, our capabilities to build the instrument outside of Nautilus walls and continue to build instruments which we're using internally for testing, for verification, validation studies, and for working with our collaborators. So that work continues, and we don't foresee any particular issues on that side. In terms of on the, the chips and the consumable side, for, for chips and flow cell, we continue to mature our supply chain, increase the capacity of that supply chain, tighten the tolerances for error in our production, and we made a, you know, a number of small tweaks to the flow cell design in Q1 that are being implemented here, you know, through Q1 and into Q2 here, that are aimed at improving quality. On the reagent side, remember that our reagents are kind of consist of two types of categories of things. One is, you know, bulk buffers and those sorts of things, and that stuff is pretty simple and we, for the most part, manufacture that stuff with partners outside of our walls. For the antibody side and the probe side, you know, the probe is basically antibody plus our proprietary label. We have a, we've been building this for quite some time. We have a robust supply chain that includes building some of that stuff internally as well as some of the constituent parts that go into those externally, and we're managing the supply of the input material as well. So I don't see any issues there as we begin to scale up here in the latter part of this year and next year. Okay, great. Thanks so much. Yep. Thank you. One moment for our next question. Our next question comes from Matt Stanton with Jefferies. Your line is open. Hey, thanks. You guys discussed it in prepared remarks, but it sounds like the experimental runs continue to make good progress. If we go back to last quarter, I think you talked about an order of magnitude's improvement, you know, three times better sequentially in one Q as well. Just given how important this is for scaling the platform, I guess, how much more of an improvement do you need or should we expect to see? Are you getting closer to kind of where these models and systems need to be? Thanks. Yeah, I'll take that one. As a starting point, it's when we think about our launch targets, we typically have expected to want to be able to execute on hundreds of measurements using hundreds of probes, expected to be in two colors. So somewhere in the 150-200 cycles are what we're targeting for having, for our launch targets. And so accordingly, you should continue to see us advancing towards that, improving towards that, further increasing the reproducibility and stability across hundreds of cycles, as where we're aiming to be. In terms of reliability and reproducibility, some of the other areas that we're continuing to push on are end-to-end assay reproducibility as well, rather than components reproducibility. For example, in the limit of detection studies that we presented at US HUPO, one of the things that we did was repeat those measurements several times across different instruments, across different operators, across different days. And so those are the kinds of things that we're going to continue pushing towards as we move towards releasing and our instrument and platform. Thanks. Then maybe one for Sujal. Sounds like a lot of, you know, positive momentum coming out of HUPO. Would love to just hear a little more on some of the learnings from the recent event here in the U.S., and then, you know, what you'll look to build upon ahead of the event this fall in Germany. It sounds like there's a lot of interest. You might have a bit more of an update, both for the scientific and investment community. So just would love your thoughts on kind of building on the recent momentum, and capitalizing on the next event here in October. Thanks. Yeah. Why don't I start that, and then I'll let Parag maybe delve in a little bit more detail. I think that, you know, the US HUPO event was one where I think that we continued to see a lot of momentum, both for the proteomics space, but for Nautilus specifically as well. I was down there in Portland and had the opportunity to walk around and see all the posters and the booths. You know, I had a number of conversations with many of the KOLs and scientists in the proteomics space, and there certainly was a lot of excitement around the data that we were showing and the Nautilus method. Our booth traffic was excellent. We had a lot of people who are well-known proteomic scientists, not just stopping by, but stopping by and spending extended amounts of time talking to, our booth staff, having a conversation with Parag or myself or with, Nick Nelson, our Chief Business Officer, and really engaging in a way that I think, was gratifying to see, but as well, I would say is a little bit, different and improved from what we've seen in years past. So I think that was great. One of the other highlights, I was down there during, one of Parag's talks. Parag had multiple talks at the US HUPO conference, and one of his talks was really one that is an updated version of the talk that he's given before, which really describes the genesis of the Nautilus scientific method, our technology, how the assay works, and what our end goals are, as well as updated data. And Parag's session was absolutely packed. We were turning down our competitors at the door who were trying to get in. Every seat was full with potential customers and scientists looking to learn more. The aisles were full of people. Really great to see, and lots of good questions and engagement as well. So from that regard, I think it was a really successful show. You know, just to address the second half of your question head-on, and then I'll let Parag add any detail that he wants to add. But, you know, certainly, you know, for World HUPO coming up, we're working very hard to take the data that we have now and take it to one step closer to having a product that's out the door, right? And, we're not to commit on the call to exactly what we have as we head into World HUPO here, but we're hopeful that we can start showing much more data than just being able to decode transferrin, for example, which is what we showed at US HUPO. And so we're working hard, our heads are down, and the entire team's focused on that. Parag, anything to add there in terms of some detail on US HUPO? Yeah, I think one of the largest, as Sujal mentioned, one of the largest changes that we saw was a transition in KOLs and other scientists asking to understand how the platform works towards a transition towards, "Could I use it for my specific application?" And those applications were incredibly wide-ranging. They ranged from you know, very detailed mechanistic studies or biological time courses or biomarker studies, but it spanned a wide range of substrates, from cell lysates to blood to CSF. And seeing researchers get into that level of detail, of really thinking through how our platform might apply to the research questions that they're asking, should have gotten beyond understanding the way that it works. And we're really excited about how it might expand their proteomic horizons. Super. Thank you. Thank you. As a reminder to ask a question, please press star one one on your telephone and wait for your name to be announced. Again, that is star one one to ask a question. I'm showing no further questions at this time. This concludes today's conference call. Thank you for participating. You may now disconnect.