Altimmune Q4 2025 Earnings Call - Pemvidutide set for FDA-aligned global 1,800-patient Phase 3 after strong 48-week MASH data

Operator: Good morning, ladies and gentlemen, welcome to the Altimmune Year-End 2025 Financial Results Conference Call. 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 hear an automated message advising your hand is raised. To withdraw your question, please press star one one again. As a reminder, this call is being recorded. I’ll now introduce your host for today’s conference call, Lee Roth, President of Burns McClellan, investor relations advisor to Altimmune. Lee, you may begin.

Thanks, Gigi, and good morning, everyone. Thank you for joining us for Altimmune’s fourth quarter 2025 financial results and business update conference call. On today’s call, you’ll hear from Jerry Durso, our Chief Executive Officer; Dr. Christoph Arbut-Engels, Chief Medical Officer; Linda Richardson, Chief Commercial Officer; and Greg Weaver, Chief Financial Officer. Following management’s prepared remarks, we’ll open the line for the Q&A session. Our fourth quarter and full year 2025 earnings release was issued this morning and can be found on the investor relations section of the Altimmune website. Before we begin, I’d like to remind everyone that remarks made about future expectations, plans, and prospects constitute forward-looking statements for purposes of the safe harbor provisions under the Private Securities Litigation Reform Act of 1995.

Altimmune cautions that these forward-looking statements are subject to risks and uncertainties that could cause our actual results to differ materially from those indicated. For a review of the risk factors that could affect the company’s future results and operations, we refer you to our filings with the SEC. I also direct you to read the forward-looking statements disclaimer in our press release issued this morning, which is now available on our website. Any statements made on this call speak only as of today’s date, March 5th, 2026, and the company does not undertake any obligation to update any of these forward-looking statements to reflect events or circumstances that occur on or after today’s date. As a reminder, this call is being recorded and will be available for audio replay on the Altimmune website. With that, it’s now my pleasure to turn the call over to Mr.

Jerry Durso, President and CEO of Altimmune. Jerry?

Jerry Durso, President and Chief Executive Officer, Altimmune: Good morning, everyone, and thank you for joining us today for our fourth quarter financial results and corporate update. This is my first earnings call since joining Altimmune as CEO in January. I’d like to start with some comments to reinforce why I’m excited about the opportunities ahead of us with pemvidutide. Altimmune’s exclusively focused on liver disease, an area where I’ve spent a good part of my career. Despite a number of therapeutic breakthroughs in the past several years, there remains significant unmet need and treatment gaps among patients living with serious liver diseases like MASH. We believe that pemvidutide has the potential to bring meaningful benefit to people affected by a variety of hepatic diseases. The balanced one-to-one agonism of glucagon and GLP-1 in a single molecule achieved with pemvi makes it potentially well-suited for the conditions we’re targeting.

Glucagon’s direct effect on the liver can drive reductions in liver fat, inflammation, and fibrotic activity, while GLP-1 can mediate weight loss and appetite suppression and may contribute to anti-inflammatory effects. Additionally, pemvi incorporates our proprietary uPort structure, which slows absorption and is believed to drive improved tolerability, potentially reducing GI and other side effects, which can lead to greater treatment adherence. Importantly, keeping patients on therapy at the right dose is crucial to the management of chronic diseases such as MASH. The data we’ve generated to date across multiple preclinical and clinical trials, including our phase 2b MASH study, reinforce our belief in the strong therapeutic potential of pemvidutide, as well as its ability to stand out among competing therapeutic options if approved in MASH.

As we evolve the pemvi plan, we’re focused not only on advancing into phase 3, but also ensuring that the potentially unique benefits of pemvi for patients, payers, and physicians are addressed in our program with a keen eye to competitive advantages in pemvidutide’s targeted product profile. Based on our ongoing discussions with hepatology KOLs and other practitioners, it’s clear that clinical practice in MASH is evolving and will continue to evolve as new therapies become available. The prevailing sentiment is that no single therapy will be able to effectively address the needs of all patients. This is already being acknowledged by the industry as a number of companies are pursuing combination strategies to meet the needs of broader segments of the patient population.

With pemvi’s dual mechanism, we have a combination therapy in a single molecule with the potential to address both the hepatic and metabolic drivers of disease at once, which could differentiate pemvidutide from these multi-drug approaches that aim to achieve the same benefits we’re providing with a single compound. In our Phase 2 MASH study, pemvi showed strong and early MASH resolution at just 24 weeks and clear anti-fibrotic activity at 48 weeks. The key measures were consistently moving in the right direction, with important non-invasive markers of fibrosis and inflammation improving as therapy progressed in the trial. In addition to efficacy, patients need a therapeutic regimen that they can adhere to in order to realize the full benefit of treatment.

As we’ve shared, the favorable tolerability leading to low discontinuations due to adverse events that we saw in our phase 2 MASH trial can be a key differentiator that pemvi may deliver. Likewise, for patients and physicians, the simple dosing aspect of pemvidutide could play an important role. The one or two-step titration scheme we’ll be incorporating into the pemvidutide phase 3 trial could prove to be key when compared to the much more complex dosing of other injectable compounds. The potential of pemvi was recently recognized with FDA Breakthrough Therapy designation in MASH. Breakthrough is granted to medicines that are intended to treat a serious or life-threatening condition and have shown preliminary clinical evidence indicating the potential for substantial improvement over available therapies on a clinically significant endpoint. We look forward to proving this out in our upcoming phase 3 trial.

I hope this gives you some additional perspective into why we’re so encouraged about the future of pemvidutide and excited for what’s to come. As to how we’re preparing to deliver on this potential, one of my top priorities since becoming CEO is strengthening Altimmune’s foundation to equip us for the continued successful advancement of pemvi and support our strength as a late-stage development company. I’m pleased to report that over the last several months, we’ve enhanced our team with the addition of new leaders who bring expertise in liver disease, late-stage clinical development, commercial strategy, and other key areas. We’ll continue to build onto the strong Altimmune team strategically to make sure we’re able to deliver. We’ve also remained focused on strengthening our financial position.

The $75 million capital raise completed in January was an important step in our ongoing efforts to prepare for the planned initiation of our Phase 3 this year. We remain committed to securing access to the capital required to successfully drive our clinical programs and create long-term value. At the end of Phase 2 meeting with the FDA, which was held in the fourth quarter based on 24-week data from our Phase 2 MASH study, we received valuable guidance on the Phase 3 trial, and we made excellent progress on the in-depth planning of a major global MASH trial like this. We are clear on the overall design elements and the endpoints, we’re now in the process of making the final detailed decisions on the protocol and the full operational plan. Christophe will share more on the trial with you this morning.

While we have significant focus on our MASH program, we’re also executing well on our other phase 2 trials. As a reminder, last fall, we completed enrollment of the phase 2 AUD trial ahead of schedule, and we’re now on track to report top-line data from this study in the 3rd quarter of this year. We’re also expecting the complete enrollment of our phase 2 trial assessing pemvi in ALD in 2026. pemvidutide represents a unique and compelling opportunity to improve the lives of people with MASH and other liver conditions. It has the potential to become an important tool for physicians as they look to improve upon the current treatment paradigm. This is a very exciting time for the team at Altimmune. We’re moving quickly with intent and focus on bringing pemvidutide to patients and creating long-term value for our shareholders.

With that, I’ll now turn the call over to Christophe for a clinical update.

Dr. Christoph Arbut-Engels, Chief Medical Officer, Altimmune: Thank you, Jerry. As we shared on our conference call in December, the 48-week data from the IMPACT trials of pemvidutide in MASH, which evaluated the 1.2 and 1.8 milligram doses, was very encouraging. The 48-week data set, including key non-invasive markers of liver inflammation and fibrosis, weight loss and tolerability, and showed strong evidence of anti-fibrotic effect at week 48, following the early MASH resolution shown already at week 24. The 48-week data established a clear dose response that supports our plan to focus on the 1.8 milligram dose in the Phase 3 trial, while also evaluating the 2.4 milligram dose, which could provide additional benefits on both weight loss and most importantly, liver efficacy.

We saw substantial improvements both from baseline and from week 24 to week 48 in ELF, liver stiffness, with the results achieved at the 1.8 milligram dose being particularly clinically relevant and comparable to or greater than that observed with the approved MASH product. These measures are clear indicators of anti-fibrotic activity. We believe that they will translate into measurable histologic improvement at the 52-week time point in phase 3, which, along with MASH resolution, will be the basis for potential accelerated approval. In addition to the strong benefit in ELF and liver stiffness results, treatment with pemvidutide demonstrated statistically significant improvement in liver fat content, liver health as measured by ALT and cT1 imaging, with particularly impressive results observed in the 1.8 milligram treatment arm.

While these NITs tells the story of pemvidutide’s robust direct beneficial effect on the liver, the 48-week data also provided evidence of its ability to address metabolic drivers of MASH with patients receiving 1.8 mg pemvi, achieving 7.5% weight loss at 48 week with no plateauing. As noted, the inclusion of a 2.4 mg dose could result in greater weight loss in the upcoming phase 3 trial and be an opportunity for additional efficacy on MASH endpoints for accelerated approval. As Jerry pointed out, adherence to treatment in this chronic disease is currently a substantial challenge. Long-term treatment is key to demonstrating clinical outcomes as well as delivering benefits to patients in the real world.

Therefore, safety and tolerability are of paramount importance in addition to demonstrating efficacy in MASH. I am very pleased to say that the low treatment discontinuation rate in the 48-week phase 2 study were maintained in patient taking PEMV. We attribute this key benefits to the favorable safety and tolerability profile of PEMV, with limited GI adverse events despite the absence of titration. The timing of the GI-related adverse events in the IMPACT trial, which were predominantly occurring in the first or 2 months of treatment, helped inform our plan to introduce a simple 1 or 2-step titration depending on the dose in the phase 3 program. We expect this to further improve the tolerability profile of what we observed in phase 2 study.

On the regulatory side, the minutes from our end of Phase 2 meeting with the FDA, which we received in January, confirmed our takeaways from the meeting. We are aligned with the agency on all key aspect of the design for the pivotal Phase 3 study, which will assess pemvidutide in patients with moderate to advanced fibrosis. Participants in the PEMV arms will start at 1.2 milligram and follow a one or two-step mostly titration to either the 1.8 or 2.4 milligram dose. The trial’s primary population will enroll 990 patients with biopsy-confirmed F2 or F3 MASH, evenly split between placebo, pemvidutide 1.8 milligram and pemvidutide 2.4 milligram. Measure improvements in either of 2 primary endpoints, MASH resolution or fibrosis improvement at 52 weeks, with a MASH assist used to aid the histologic assessment.

The 52-week endpoint is designed to support potential Accelerated Approval with 5-year clinical outcomes data on liver-related events needed for an eventual final approval. A second cohort following the same dosing and titration parameter will enroll approximately 800 patients with NIT-assessed F2 and F3 MASH, and measure changes in these non-invasive tests over the same treatment period. This population will support safety and long-term clinical outcome evaluations. In total, we will enroll approximately 1,800 patients in this pivotal study. Other key endpoints in the program will include safety, weight loss, and additional potential differentiation attributes such as body composition, quality of weight loss, and patient-reported outcome. This will be a global trial with sites in North and South America, Europe, and Asia.

In addition to the alignment with the FDA, we have submitted requests for scientific advice to both the European Medicines Agency and the MHRA. We have incorporated learning from previous programs and believe that our phase 3 design is well-positioned for these regulatory agencies. Overall, we’ve made great strides towards preparing to initiate our phase 3 trial this year. We are finalizing our protocol, and we have aligned with the FDA on the trial design. We have incorporated feedback from Key Opinion Leaders, and we look forward to execution of the phase 3 study. We will be providing updates on our progress as appropriate. Looking beyond MASH, PEMV has the potential to address major unmet medical needs in both AUD and ALD because of a similar liver physiopathology to MASH in these indications. Both of those phase 2 trials are progressing well.

First, RECLAIM, our AUD trial, completed enrollment in the fourth quarter of 2025. We look forward to reporting the top-line data in Q3 of this year. In addition to patients’ reported measures of alcohol consumption, the trial will also assess an objective biomarker associated with alcohol intake, PEMV’s effect on body weight, and safety in this population. For the RESTORE trial in ALD, which will evaluate pemvidutide’s effect on liver-related non-invasive test, markers of alcohol consumptions and body weight is continuing to enroll, and we expect to complete enrollment later this year. Both trials will further expand the already robust body of evidence for pemvidutide in serious liver diseases. With that, I will turn the call to Linda for a commercial perspective on pemvidutide.

Linda Richardson, Chief Commercial Officer, Altimmune: Thanks, Christophe. Good morning, everyone. As we move toward phase 3 initiation, establishing the future commercial competitiveness of pemvidutide in MASH remains a primary focus, both in the design of our trial, as Christophe described, and in identifying and addressing unmet needs in the marketplace. Despite early excitement with the first 2 classes of approved therapies for MASH, it is clear there is significant room for new therapies to address treatment gaps and needs. We recently conducted market research with 75 U.S. healthcare professionals who treat MASH patients to assess unmet needs in the market and satisfaction levels with current and future therapies. I’ll share some key insights now. First, we learned that physicians are identifying emerging needs in patient subgroups. This includes options for MASH patients who have discontinued semaglutide for either tolerability or efficacy reasons, and now need alternatives.

Tolerability failure was seen as an area of high or very high unmet need by the majority of the respondents. Half of all physicians surveyed agreed that there is a high or very high unmet need for therapies appropriate for MASH patients at risk for loss of muscle mass. A recent review of the literature shows that nearly one in four patients with MASLD is at risk for additional muscle loss or sarcopenia, and this rate is higher in more advanced MASH patients. In addition, healthcare professionals in our research see several fundamental limitations with currently approved and potential future therapies, setting up a clear need for potential novel options like pemvidutide. Many physicians acknowledge that the lack of weight loss with FGF21s and resmetirom are limitations of these options, and 44% agree that the tolerability profile of GLP-1 and GLP-1 based therapies cause many patients to drop off.

Over 1/3 believe that lengthy titration schemes to improve the tolerability of these drugs creates adherence challenges. A similar number agree that the loss of lean muscle mass is a concern when initiating GLP-1 or GLP-1 GIP therapy, echoing the concerns regarding sarcopenic patients I mentioned earlier. From our Phase 2 data seen to date, we believe that pemvidutide and its dual mechanism of action may address many of these unmet needs. Our existing clinical program already shows that pemvi has a favorable tolerability profile relative to current and investigational therapies. This may be highly differentiating and is clearly important in this market where patients must remain on drug therapy to achieve efficacy and weight loss benefits. Other MASH therapies have trial designs with long titration schedules using multiple subtherapeutic doses to try to mitigate side effects.

As Christophe highlighted, our phase 3 trial will start with an active 1.2 milligram dose in each arm and have only one or at most 2 titration steps to possibly further improve our favorable tolerability profile. The inclusion of a 2.4 milligram dose with a 2-step titration over only 8 weeks should help maintain tolerability and allow us to evaluate potential further increases in efficacy and weight loss. Weight loss is an important element of managing MASH, and it’s clear that lean muscle preservation is a growing concern among HCPs. This is an unmet need that we may be able to address, as we’ve seen lean mass preservation in our pemvidutide obesity trial, and we’ll be generating additional data on this element in our further studies of pemvi in MASH patients. Now, I’ll share how physicians reacted to our blinded product profile in this market research.

We developed our projected product profile based on our current data for the IMPACT, showing early and significant MASH resolution, anti-inflammatory and fibrosis effects from MASH, and included data we anticipate seeing in our phase 3 program, such as quality weight loss in the 8%-10% ranges with lean muscle preservation. HCPs surveyed recognized significant promise in our efficacy, including direct action on the liver with our glucagon agonism, metabolic improvements, straightforward titration, quality weight loss that preserves lean muscle mass, and pemvi’s safety and favorable tolerability. In fact, in this market research setting, over 70% reported a very high or high likelihood to prescribe pemvi. Physicians projected using pemvi in 43% of their F2 patients and 51% of F3 patients. Over 80% saw pemvi as both a first and second-line option.

pemvidutide’s potential efficacy, safety and tolerability profile may allow for use in patients requiring greater efficacy than a GLP-1 alone or providing quality weight loss not seen in certain other classes of drugs like FGF21s and resmetirom. As we add to our understanding of pemvi’s clinical performance and data and amplify our storyline regarding our unique combination of attributes, we believe we will be well-positioned to enter the MASH marketplace. What we see today and continue to hear from healthcare professionals certainly signals strong interest in pemvidutide. It is not enough to be differentiated. You must have meaningful differentiation. Pemvi’s projected profile provides that. I’ll now turn it over to Greg to review our financial results.

Greg Weaver, Chief Financial Officer, Altimmune: Thank you very much, and good morning. I’ll begin with a brief review of our fourth quarter 2025 P&L. R&D expense in the fourth quarter 2025 was $18.4 million, compared to $19.8 million in the same period of 2024. Variance in R&D spend related to the end of the Phase 2b trial in late 2025. Breaking that down further, the Q4 2025 R&D spend included $12.8 million of direct costs related to pemvidutide development, of which $3.1 million was for the IMPACT Phase 2b trial, $7.4 million for the Phase 2 trials in AUD and ALD, and $1.2 million in CMC-related expenses. Fourth quarter 2025 R&D also included $1.3 million in non-cash stock-based comp, which was flat in comparison with the same quarter prior year.

Moving to G&A. The G&A expenses were $10.5 million and $5.1 million for the quarters ended 12/31/2025 and 2024 respectively. The Q4 increase in G&A year-over-year was driven by a one-time non-cash and cash stock compensation and payroll charge due to executive transition, which totaled $2.6 million, along with increases in professional fees and other compensation related expenses. Fourth quarter 2025 G&A included total non-cash stock-based comp of $3.6 million compared to $1.8 million in the prior year period. Net loss for the fourth quarter 2025 was $27.4 million or $0.27 a share, compared to a net loss of $23.2 million or $0.33 a share in the fourth quarter of 2024. Total full year 2025 cash OpEx was approximately $67.5 million, excluding non-cash comp of $16 million.

We anticipate the use of cash will trend up this year as we approach the launch of the MASH Phase 3 trial. As Christophe mentioned earlier, we’re actively finalizing the last details of the study plan and the other last important details for the Phase 3. When ready, we will update you and come back and provide more guidance on the timing of cash flows and related details. Moving over to the balance sheet. We reported total cash of $274 million at year-end 2025. We made a great deal of progress in building the financial position, having recorded net proceeds totaling approximately $208 million last year in a combination of $174 million in net equity capital raised and $35 million in funding off the Hercules tranche loan facility.

In addition, we raised $75 million in the registered direct offering announced in January with Alyeska Investment Group. The proceeds from this offering, along with $8 million raised off of our ATM facility in January, equates to a pro forma cash position today of approximately $340 million. We forecast that our current cash position would provide an operating cash runway into 2028 based on our current expectations for the scope and timing of the MASH Phase 3 plan, along with the cost of both the AUD and ALD Phase 2 trials. Our intent is on having the cash resources necessary to execute the MASH Phase 3 trial. We’ll continue to be strategic and opportunistic in our approach to securing access to the forecasted capital needed to fund the Phase 3, and we’ll keep you updated on our progress.

With that, I’ll turn the call back to Jerry.

Jerry Durso, President and Chief Executive Officer, Altimmune: Thanks a lot, Greg. As we highlighted today, we’ve entered 2026 with a great deal of momentum. We’ve made significant progress as we evolve into a late clinical-stage organization, and we’re committed to further advancing our promising differentiated liver therapy and creating long-term value for our shareholders. This concludes our formal remarks. We’d now like to take questions. Operator?

Annabell Samimy, Analyst, Stifel1: 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. 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 Roger Song of Jefferies. Your line is open.

Annabell Samimy, Analyst, Stifel2: Excellent. Congrats for the update and thank you for taking our question. First question related to the phase 3. We all see the FDA have some new single pivotal framework. Is that possible you can further save the cost from the phase 3 if FDA allow you to do some amendment for the phase 3? Thank you.

Jerry Durso, President and Chief Executive Officer, Altimmune: Thanks for the question, Roger. Christophe, maybe you get on that one.

Greg Weaver, Chief Financial Officer, Altimmune: Yes. No. We’ve discussed this, we haven’t discussed this at the end of phase two meeting. The path for approval for the MASH programs is one single trial, for accelerated approval and then all the way to final approval for clinical outcomes. This doesn’t really apply directly for us. That really doesn’t change anything from how we’re approaching our development program towards approval.

Annabell Samimy, Analyst, Stifel2: Got it. That makes sense. Just knowing you’re still finalizing the protocol, any statistical plan you can share at this point in terms of the, you know, interim versus the final outcome, alpha split, and then the different 2 primary endpoint for the interim, if anything you can share. Thank you.

Jerry Durso, President and Chief Executive Officer, Altimmune: Yeah. Thanks, Roger. A lot of progress there. Maybe Christophe can give the big picture on that.

Greg Weaver, Chief Financial Officer, Altimmune: Yeah. The first is, we are having a fairly standard design for the phase 3. We have our two primary endpoints per the FDA guidance, which is MASH resolution without worsening of fibrosis and fibrosis improvement without MASH worsening. This is how we’ve powered our study. Our study is powered more than 90% on these endpoints, that gives us a sample size that is around 990 patients, so 330 patients per arm. As we highlighted, that power should give us the sufficient patients to reach the approval. The split of the alpha is, as you know, for the accelerated approval, for parts one is 0.1. Yeah.

The rest of the alpha goes all the way to the clinical outcome. The last thing is we’ve powered based on our assumptions for the 1.8 milligram dose.

Dr. Christoph Arbut-Engels, Chief Medical Officer, Altimmune: As mentioned, we’re very well powered for this. In our trial, we have the options for an upside with the 2.4 milligram dose, we’re really hoping that we’ll see some added benefits there.

Boris Peaker, Analyst, Titan Partners: Thank you so much.

Jerry Durso, President and Chief Executive Officer, Altimmune: Thanks, Roger.

Annabell Samimy, Analyst, Stifel1: Thank you. Our next question comes from Elie Merle of Barclays. Your line is open.

Annabell Samimy, Analyst, Stifel5: Hi, this is Jasmine on for Ellie. Thank you for taking our questions. I have two. First, from your conversations with the FDA, where does the agency stand now on flexibility to consider NIT as a potentially registrational endpoint? Is the thinking for including the NIT cohort that we could potentially see more flexibility on this in the future, that you might be able to amend and use this cohort for approval more quickly? Secondly, can you talk about your plans in MASH F4 and potential timelines there? Thanks.

Jerry Durso, President and Chief Executive Officer, Altimmune: Thanks, Jasmine. Maybe I’ll start and then turn it back to Christophe. On the first question, we did broach the point of endpoints on NITs in the end of Phase 2b process. The agency at that point said it was premature to consider that, which is why you see the biopsy-driven endpoints. Nonetheless, we’ll capture all of that data. That process at the agency will be ongoing, but again, the as we finalize the protocol, you’ll see the biopsy-driven endpoint as part of that. Maybe you wanna pick up the second.

Dr. Christoph Arbut-Engels, Chief Medical Officer, Altimmune: Sure

Jerry Durso, President and Chief Executive Officer, Altimmune: second half.

Dr. Christoph Arbut-Engels, Chief Medical Officer, Altimmune: No, I mean, in the context of the MASH assist approval, we see the agency slowly moving towards that direction. We’ve incorporated NITs in our trials, and we’ve put everything in case they change during the conduct of the study. We are in a good shape here if they were to go there. The other questions on the F4, I mean, our current focus is clearly on the F2, F3. We believe there is some potential here with the mechanism of actions and the direct effect on the liver to impact the F4. At this point in time, our teams and is really dedicated towards the execution of the phase 3 and putting all the last pieces in place to start.

Annabell Samimy, Analyst, Stifel5: Okay. Thank you.

Jerry Durso, President and Chief Executive Officer, Altimmune: Thanks, Jasmine.

Annabell Samimy, Analyst, Stifel1: Thank you.

Annabell Samimy, Analyst, Stifel5: Thank you.

Annabell Samimy, Analyst, Stifel1: Our next question comes from Yasmeen Rahimi of Piper Sandler. Your line is open.

Annabell Samimy, Analyst, Stifel7: Hi, this is Dominic on for Yas. Congrats on all the updates, and thank you for taking our question. We just had a few here. The first one related to the phase 3 for MASH. What are the rate-limiting steps to kick off that study, and how are you thinking about the timelines for enrollment and top-line data?

Jerry Durso, President and Chief Executive Officer, Altimmune: Okay. Maybe I’ll start on the first half, Christophe can take the second. You know, we’re very focused on bringing Pemvi to patients as soon as we can. I think we’re approaching the preparation on both the financial and the operational fronts. As Christophe outlined, we like where things sit on the clinical side. Good clearance from the FDA, a good insight on our proposal regarding Europe. All things are moving in parallel. We expect that all will be in line to start the trial as we progress through this year, we’ll narrow the guidance as things come to fruition.

The teams are moving quickly here and this parallel approach is gonna lead us to initiation of the trial.

Dr. Christoph Arbut-Engels, Chief Medical Officer, Altimmune: Yeah, I mean, I can just add to what Jerry says. We’re preparing everything on the regulatory side. We have alignment with the FDA. We have done our homework on what is expected from the European or the MHRA. We’re in good shape here. We don’t expect any major changes on our approach. It’s about now execution, getting the team to finalize the last details, whether it’s in our protocol, some of the key aspects of the protocol, moving forward to be ready to start as soon as possible.

Annabell Samimy, Analyst, Stifel7: Okay. Great. Thank you. I just have one more question on RECLAIM. We’re excited for that trial. What are your thoughts on what you hope to see, and what would you consider clinically meaningful on alcohol usage for that? Thank you so much.

Dr. Christoph Arbut-Engels, Chief Medical Officer, Altimmune: This study on the AUD is analyzing the heavy drinking days over a period of seven days, so a week. We have powered the study to see a fairly conservative change, so hopefully we’ll see that. We are also capturing other endpoints like the zero drinking days as well as some of those WHO risk because these could be endpoints that will be discussed with the FDA if we move that program forward. We’re going to look at all these aspects when we get the data and hopefully we’ll see some improvements. As a reminder, the mechanism of action is well suited for this, both on the reward system through the GLP-1 side of it as well as the direct effect on the liver, which is quite unique compared to what other programs have currently in development.

Annabell Samimy, Analyst, Stifel7: Great. Thank you.

Annabell Samimy, Analyst, Stifel1: Thank you. Our next question comes from Corinne Johnson of Goldman Sachs. Your line is open.

Anupam, Analyst, Goldman Sachs: Hi, this is Anupam on behalf of Corinne Johnson. Maybe, can you just tell us about the additional financing through the year and what you are anticipating needing to reach the completion of the Phase 3 in the MASH program? Any color on that?

Jerry Durso, President and Chief Executive Officer, Altimmune: Maybe I’ll start on that, and then Greg could pick it up. Thanks. As I mentioned a couple of times already, including in the prepared remarks, we’re preparing on both the financial and the operational side. On the financial side, as Greg outlined, we’ve improved our position. He referenced the roughly $340 million on the balance sheet at the end of February. That gives us runway into 2028. We’d like to make further progress as we progress to initiate the trial. We believe we have good line of sight on some options on how we would approach that in parallel to all the good operational work that Christophe and his team is doing. We’ll access the appropriate tools along the way.

Greg, anything else you want to reiterate?

Greg Weaver, Chief Financial Officer, Altimmune: I’ll just pick up that thread. I think we have a sense of purpose here in making sure we’ve got the strength of our resources in hand as we begin the next necessary steps to launch this trial this year. just basically just have a clear line of sight on what that looks like, how much that’s gonna take, and confident that we’ll get there.

Anupam, Analyst, Goldman Sachs: Okay. Thank you.

Greg Weaver, Chief Financial Officer, Altimmune: You bet.

Annabell Samimy, Analyst, Stifel1: Thank you. Our next question comes from Annabell Samimy of Stifel. Your line is open.

Annabell Samimy, Analyst, Stifel: Hi. Thank you for taking my question. Thanks for all the color on the profile and the physician receptivity. I just wanna ask from a competitive landscape, we’ll likely be seeing more data from retta and servo in obesity this year with the, you know, full knowledge that this is in obesity. What are some of the key data points that you as a team are looking for that may translate into MASH and could potentially have implications for the competitive landscape on the glucagon agonist front? Maybe you can just give us an idea of how you’re thinking about the entire competitive landscape for these specific dual agonists. Thanks.

Linda Richardson, Chief Commercial Officer, Altimmune: Sure. We’re always paying attention to what’s happening in the marketplace, and we look at ourselves and what we have in terms of great tolerability, quality weight loss that we haven’t seen with these other agents. Our simplicity of our titration and tolerability, which we’ve emphasized, is really seen as something quite important. For very obese patients, you know, I think that there is going to be a role for managing that, but that has to be balanced with tolerability and efficacy elsewhere. The direct acting effects that we have shown and the ratio that we’re showing, and the 1-to-1 ratio, we believe are very important. If you’re talking about the results in obesity, there may be some read over there, of course, but the trial that they’re looking at shouldn’t read out for quite some time on outcomes.

Our trial will be very heavily focused on MASH patients, so that’s our focus, F2, F3. The size of the market is such that there are going to be enough patients who need help that there will be ultimately many roles, I think, for pemvidutide, particularly if we deliver on the differentiation in the profile that we just talked about.

Jerry Durso, President and Chief Executive Officer, Altimmune: ybe one other point, Linda touched on, the ratio matters. I think when you think about the Boehringer Ingelheim compound, for instance, I mean, obviously we’ll see some additional data from them. But I think the work we’ve done with our own compound, we believe the balance ratio is part of what’s driving some of the elements around the tolerability profile, which again, we saw a good solid picture in our phase 2 without a titration. Now we have the opportunity to put a simple titration and maybe move forward on that as well. We’re looking at all of the competitive entrants.

It’s why we focused on this call, frankly, a lot more detail on the differentiation story because it’s how we view the work that we are doing currently executing the phase 3 and also really always understanding how we’re gonna position pemvi to bring the benefit to the patients that need it the most.

Linda Richardson, Chief Commercial Officer, Altimmune: Yeah. Let me I just wanna correct myself right now. The survodutide study is with their 8 to 1 GLP glucagon, and that is in the MASH population. I was looking at the retatrutide trial in my head. I just wanna make sure I correct that. Either way, I think the tolerability for Servo is going to be quite significant for them. When you look at the complicated titration schedule, that is going to be of concern as well.

Annabell Samimy, Analyst, Stifel: Okay, great. Thank you very much.

Annabell Samimy, Analyst, Stifel1: Thank you. Our next question comes from Patrick Trucchio of H.C. Wainwright. His line is open.

Luis Santos, Analyst, H.C. Wainwright: Good morning. Luis Santos here in for Patrick. Congratulations on all the pro-progress. My question is regarding the MASH non-invasive test that you are using. Now that you have alignment with the FDA, did they provide any clarity on using it as primary rather than just surrogate, as well as the AI biopsy reads for potential accelerated approval?

Dr. Christoph Arbut-Engels, Chief Medical Officer, Altimmune: Christophe. Yep. On the, on the, on the discussion with the FDA, as mentioned, the needs are not or too premature now, and we just wanna be really ready on this. However, the opportunity with our two cohort is actually severalfold. Once it fulfills some of those, the requirements for the safety as well as the long-term clinical outcome, but also to enroll a little faster our phase 3 trials because we know and we’ve done that we’ll look into it. PIs will be happy to actually have the patients having different options, so with the biopsies and the NITs. That will give us some advantage there, and we’re hoping this will be playing in our favor.

With regard to the MASH, this is still a consensus based on the pathology reading. At the end, the pathologist is responsible. Where we believe this could help us is actually in reducing variability, potentially if we do the right training, et cetera, having a lower placebo response and trying to play in our favor. We’re putting those pieces into place right now. We’re having a lot of discussions with key pathologists and with the MASH assist company, PathAI. We’re putting all the pieces of that and getting very close to having a really strong path toward biopsies, but also, as mentioned before, having the flexibility around the NIDDs in case the FDA changes their mind.

Luis Santos, Analyst, H.C. Wainwright: That sounds great. very quickly, can you update us on your CMC manufacturing readiness? Do you plan to scale for global trial manufacturing supply for both obesity and MASH simultaneously? Or do you plan to partner on that end?

Dr. Christoph Arbut-Engels, Chief Medical Officer, Altimmune: Yeah-

Jerry Durso, President and Chief Executive Officer, Altimmune: Scot Roberts can take the question. Just one point on the front is that we’re focused on the MASH trial, okay? We’re focused on positioning MB as a liver compound.

Annabell Samimy, Analyst, Stifel3: Yeah, that’s exactly right. As far as readiness for the phase 3, we believe we’re there. We’re ready to go on that. As far as MASH, a global trial, that’s really not an issue for MASH. You know, we were originally developing the process for obesity. We can scale to that size as necessary, but the company is focused on MASH and for those indications in the U.S. and the rest of the world, we’re exactly where we need to be.

Luis Santos, Analyst, H.C. Wainwright: Great. Thank you so much.

Jerry Durso, President and Chief Executive Officer, Altimmune: Thanks.

Annabell Samimy, Analyst, Stifel1: Thank you. Our next question comes from Michael DiFiore of Evercore ISI. Your line is open.

Annabell Samimy, Analyst, Stifel0: Hi, guys. Thanks so much for taking my questions. 2 for me. The first one, just wanna drill down on a prior question that was asked. Now that you’ve received the FDA minutes, what are the key elements that are fully locked, and what is the single biggest remaining variable that you’re still optimizing? Secondly, with the request for EU scientific advice now submitted, is there any early read on whether EU feedback could change anything meaningful versus the FDA aligned plan? Thank you.

Jerry Durso, President and Chief Executive Officer, Altimmune: Thanks for the questions, Michael. Christophe?

Dr. Christoph Arbut-Engels, Chief Medical Officer, Altimmune: Yep. On the FDA minutes, and the discussion with them, I mean, we are really in the last phases of finalizing our protocol. We have all the elements, like I mentioned, the sample size. We talked to all of our biostatisticians. We have the primary endpoints aligned, the population, et cetera. What we’re looking at is finalizing some, like, for example, the biopsy is a critical point, and we wanna really take the time to do it in the most comprehensive manner and having our A team of pathologists with us. We’re taking the time to do this the most appropriate way, and these are the kind of last details. Some of the QC, for example, things like this. These are really the final stages of those aspects.

With regard to the EU, we’ve worked with regulatory consultants. We have a good understanding. We actually even have biostatisticians that are advising the EMA that work with us. We’ve put together all the pieces, so we don’t expect anything to hold us back. Our protocol and the design of the study shouldn’t change based on the scientific advice.

Annabell Samimy, Analyst, Stifel0: Great. Thank you.

Jerry Durso, President and Chief Executive Officer, Altimmune: Thanks, Michael.

Annabell Samimy, Analyst, Stifel1: Thank you. Our next question comes from Jon Wolleben of Citizens. Your line is open. Jon, your line is open.

Annabell Samimy, Analyst, Stifel6: Hello, this is Catherine on for Jon. Are you hearing me?

Jerry Durso, President and Chief Executive Officer, Altimmune: Yes. Hi, Catherine. Thank you.

Annabell Samimy, Analyst, Stifel6: Two quick ones. Mostly on the RECLAIM program. Firstly, how are you guys thinking about the mechanism of action, like as far as having GLP and glucagon, specifically maybe being beneficial over just GLP-1 agonism in the alcohol-related diseases? Also logistically, how do you guys plan on Kind of moving forward with the Phase 3 program? Are you guys going to kind of move forward with AUD and then wait for ALD data, or do you want to kind of see both before moving forward? Thank you.

Jerry Durso, President and Chief Executive Officer, Altimmune: Yeah, maybe I’ll start with the second question, and then Christophe can take the mechanistic one. look, as we said, we’re gonna expect the readout on the AUD trial in quarter three. We’ll assess the data and then plan next steps. That would happen immediately upon receipt of the data. No need to wait for ALD. We like the fact that we have a second phase 2 going in ALD, but as the enrollment will finish this year, that will be a later readout.

Dr. Christoph Arbut-Engels, Chief Medical Officer, Altimmune: Yeah. On the mechanism of action, it’s well recorded in the literature that GLP-1 have a central effect on the reward system and the type of alcohol use that those patients will have. The difference is the direct effect on the liver. They are not now more and more, and recently in January at the MASH-TAG Conference, there was clearly a talk talking about the fat in the liver of these patients, but also some elements of early fibrosis. It would be very suited for these populations to not only treat the alcohol use and the cravings, and that reward aspect, but also treat directly the liver because their liver is already substantially damaged.

Even with early fibrosis, with clearly the dual mechanism of action and the tolerability, I will add in that particular population, is extremely suitable for a product like pemvidutide. This population feels good. They are not having you don’t wanna add side effects or complications to them, so they really wanna get their liver treated as well as the cravings.

Annabell Samimy, Analyst, Stifel6: Thank you so much.

Annabell Samimy, Analyst, Stifel1: Thank you. Our next question comes from Andy Hsieh of William Blair. Your line is open.

Andy Hsieh, Analyst, William Blair: Thanks for taking our questions. We have 2 questions. One is related to the prepared remarks that you made highlighting that semaglutide failures might be a potential segment to provide clinical differentiation. Can you tell us a little bit about the exclusion inclusion criteria regarding the length of the washout period in the upcoming phase III trial? That’s question 1. Question 2 has to do with the pathologist panel that you decided. I’m curious if it’s just like a 2-person panel, 3-person panel. Kind of talk about the education process, if you don’t mind. Thank you.

Dr. Christoph Arbut-Engels, Chief Medical Officer, Altimmune: I’ll start with the first one. Clearly, what we hear and what’s been presented in the past conferences is that SEMA is hard to tolerate, that most patients do not reach the MASH effective dose, that the titration is complex for them, and that there are a lot of dropouts of treatment after already 6 months to 1 year. This is a challenge there. If that’s the case for us, clearly we will accept these patients in our phase 3 trials, and we wanna be able, if they have not tolerated SEMA, to bring them on board, because they will have an option with pemvidutide again to have... I want to remind you here the extremely strong efficacy we’ve seen in our phase 2 study as well as the tolerability.

Both together is a perfect option for this population with a real chance now to address the liver and their metabolic causes for that MASH. With regard to the pathologists, we’re still finalizing these details. We’re towards the end of this. Our thinking right now, it has to be a consensus. We’re thinking to have a few pathologists, and the reading would be a 2 plus 1 type of reading with the consensus. The plus 1 would be if there is no consensus between the 2 pathologists. Clearly, the advantage here for us is the M-MASH assist. If really that decreases the variability and helps that consensus, it should also accelerate and streamline the process.

For us, these two aspects, decreasing variability and streamlining the process are good positive perspective to execute our study in the best possible way.

Andy Hsieh, Analyst, William Blair: That’s helpful. Thank you.

Annabell Samimy, Analyst, Stifel1: Thank you.

Andy Hsieh, Analyst, William Blair: Thank you.

Annabell Samimy, Analyst, Stifel1: Our next question comes from William Wood of B. Riley Securities. Your line is open.

Annabell Samimy, Analyst, Stifel4: Thank you so much for taking our questions. 2 from us, if we may. On your RECLAIM trial, it’s focused on drinks per day and alcohol consumption. I was curious if there are any NITs looking at the liver or additional measurements that could read through to either your ALD or phase 3 trials since you’ll be evaluating the 2.4 mg dose in both the AUD, ALD, and then obviously the phase 3. As well as could you provide any color on how far along you are in your ALD trial enrollment? Then I have a 2nd follow-up.

Dr. Christoph Arbut-Engels, Chief Medical Officer, Altimmune: All right. On the AUD, we don’t have too many, we have the typical liver enzyme, et cetera. We’re looking at its heavy drinking days. We’re looking at the 0 day of drinking. We’re looking at the WHO risk classification, if you wish, and how these patients will change. We also, since it’s a patients reported outcome, we also have blood tests such as the test, which is a little bit like you would see in the HbA1c, which reflects the alcohol impregnation. We believe that here we have, and we have all the other markers of the effectiveness of the drug, such as weight loss, et cetera.

We have in our AUD a number of things that will be very helpful to prepare for discussions with the FDA, granted the data come out positive on this. On the ALD, we are enrolling as per plan. As you know, this is a more severe population, so it will be more difficult to enroll. I mean, we successfully enroll very rapidly our AUD trial, much faster than anticipated. Here on the ALD, we’re on track for as per planned and moving forward smoothly as. I can’t give you any more forecast on that at this point.

Annabell Samimy, Analyst, Stifel4: Okay. In your phase 3 trial, maybe I missed it, but will you be evaluating any cardiovascular benefits or maybe, how do you plan to assess MACE since you’re not conducting a separate CVOT trial?

Dr. Christoph Arbut-Engels, Chief Medical Officer, Altimmune: This is great questions. First, I mean, we’ve already seen some great improvements on the lipids. On the inflammations, we clearly have a decrease in inflammation with pemvidutide. We’ve seen improvements in lipids at week 24 in our latest data, similarly at week 48. We believe there is a real potential here to see some cardiovascular benefits. We will clearly look at this in our phase 3 MASH trial. The FDA doesn’t want us to include this as the clinical outcome for liver-related events. These are two separated aspects, we’ll have the data built in in our phase 3.

Annabell Samimy, Analyst, Stifel4: Okay. Okay, thank you.

Dr. Christoph Arbut-Engels, Chief Medical Officer, Altimmune: Thank you.

Annabell Samimy, Analyst, Stifel1: Thank you. Our next question comes from Boris Peaker of Titan Partners. Your line is open.

Boris Peaker, Analyst, Titan Partners: Great. Thanks, squeezy man. I guess, just wanna focus on the muscle preservation, and obviously, it’s one of the key differentiating elements of the drug. I’m just curious, the observed weight loss today, can you comment whether the muscle preservation was stronger at the lower or the higher end of the BMI scale? What can you potentially do in the phase 3 study in terms of enrollment to maximize the impact of this muscle preservation, particularly considering it’s at a large and international study?

Dr. Christoph Arbut-Engels, Chief Medical Officer, Altimmune: Yeah. The muscle preservation and the lean mass is critical, as you say, because this is something that in that population that’s aging, our average patient is 55 and older, and that’s... They start losing their bone, their muscles. We don’t wanna add anything to this. We wanna keep the muscles in these populations. We’ve demonstrate some very interesting data already in our obesity trial. We would like to continue demonstrating this. How we are integrating this in the phase 3, we are actually in some discussions right now, whether it’s a full mechanistic study or if it’s a sub-study that is put into the trial is something that we’re deciding as we’re speaking today.

Regarding the BMI, I mean, There’s no difference between the BMI. It works at all different type of BMI, and it’s consistent throughout. That’s what we’ve seen in our in our obesity study.

Boris Peaker, Analyst, Titan Partners: Got it. I’m just curious, what specific test to biomarkers are you monitoring to better understand this muscle preservation? Is it just a DEXA scan, you know, hand strength, MRI? What are you specifically monitoring, and what do you think you’d need to potentially get a claim in the label on some kind of muscle preservation?

Dr. Christoph Arbut-Engels, Chief Medical Officer, Altimmune: Yeah, That’s I mean, that’s a complicated questions because getting you getting a claim would require some. Clearly we’ll have MRI, we’ll have this kind of like you mentioned, the DEXA. We would like to better understand. We have some ideas how this is working as well. We believe that one-to-one ratio is one of the key aspect that could lead to this. If we can make that link, and during our phase three, clearly that would be an important distinctions and differentiator at launch. We’re putting all these pieces together as we’re first finalizing that protocol for the MASH and putting the pieces on that lean mass preservation as well in parallel.

Boris Peaker, Analyst, Titan Partners: Great. Thank you very much for taking my questions.

Dr. Christoph Arbut-Engels, Chief Medical Officer, Altimmune: Thank you.

Boris Peaker, Analyst, Titan Partners: Of course.

Annabell Samimy, Analyst, Stifel1: Thank you. I show no further questions at this time. I’d like to turn it over to Jerome Durso for closing remarks.

Dr. Christoph Arbut-Engels, Chief Medical Officer, Altimmune: Thanks everybody for joining us today. A lot going on in the company, a lot of progress. We’re moving forward towards the phase 3 execution. We have work to do, but we’re in a good position, and we definitely look forward to providing further updates as we progress. Thanks, everybody, and have a great day.

Annabell Samimy, Analyst, Stifel1: This concludes today’s conference call. Thank you for participating. You may now disconnect.