Terrie Curran: Thank you, Eric and thank you to all those joining us on today's call. This is our first earnings call as a commercial company. I'm excited to report on the progress we've made during both the fourth quarter 2023 and the start of the calendar year 2024. In that short period, we've achieved many regulatory, manufacturing, financial and commercial milestones demonstrating the significant experience and dedication of our teams. In November, we set out with 3 initial goals for the early stages of launch -- to communicate VOQUEZNA's the clinical superiority versus a PPI, drive awareness with physicians and build access for commercial patients. Today, I'm proud to share that we're delivering on those goals prescribers have quickly recognized the VOQUEZNA's differentiated and novel mechanism of action.

Our reps are even sharing stories of physicians echoing the VOQUEZNA's rapid, potent and durable acid suppression profile. Excitement is translating into demand with thousands of scripts being written since product became available. After over 30 years since the first PPI was approved, there is strong demand for something new. Further, the number of patients who have used VOQUEZNA is growing daily. For me, this is one of the most rewarding elements of our launch. Through our reps, employees and sometimes being with friends and family, I'm hearing stories of long-suffering patients are experiencing noticeable improvement with VOQUEZNA. We're working hard to ensure as many patients as possible can access VOQUEZNA and share that experience. In fact, with our recent Express Scripts win, we're well on our way to securing widespread coverage for commercial patients.

These early indicators, along with vonoprazan's massive commercial success in Japan have reinforced my belief in VOQUEZNA's bright future here in the U.S. With an erosive GERD market of approximately 7 million U.S. adults, positive feedback from physicians and patients and anticipated label expansions. We remain confident in our belief that VOQUEZNA has the potential to reach annual peak revenues of greater than $3 billion. As per our early launch data, I'm happy to report that over 3,800 prescriptions have been filled for the VOQUEZNA products. For clarity, this includes scripts captured by IQVIA as well as those that were filled through BlinkRx. We specified filled because we have simultaneously been monitoring an estimate of total demand which we believe paints a comprehensive picture of the early and growing position interest in writing VOQUEZNA products.

We estimate upwards of 14,000 total prescriptions have been written launched today. We're pleased with this magnitude of total demand and see it as an indicator of what's on the horizon for VOQUEZNA as we continue pursuing broad payer coverage. Last month, VOQUEZNA was added to Express Scripts, national formularies for commercial patients. In line with our goal, we secured placement with a single step edit through a generic PPI. As a result, VOQUEZNA bottles access expanded to an estimated 60 million commercially covered lives. We believe our ability to obtain commercial formulary replacement with one of the nation's largest PBM so quickly after approval indicates that our pricing and access strategy is resonating well with payers. We remain actively engaged with other major PBMs and health plans and we expect further expansion of commercial coverage throughout 2024.

Ultimately, as this coverage comes online, we anticipate the gap between total demand and filled scripts will narrow significantly. As we continue to execute on the launch, our R&D team remains focused on advancing pipeline opportunities for vonoprazan. In December, we announced that the FDA had accepted our non-erosive GERD daily dosing NDA and assigned a PDUFA target action date of July 19, 2024. We are now only 4 months away from that decision date. Non-erosive GERD represents the largest subcategory of GERD with an estimated 15 million U.S. adults diagnosed and treated for the disease annually. If approved, this indication will significantly broaden VOQUEZNA's addressable population and we believe further accelerate uptake. The review of our application is proceeding as expected and we continue to plan for July launch in a sizable indication.

As for further development, we anticipate initiating a Phase III trial for as-needed Non-Erosive GERD and a Phase II trial for Eosinophilic Esophagitis later this year. We believe vonoprazan's unique MOA bode well for success in these 2 trials. If approved, these additional label extensions will further differentiate vonoprazan relative to PPIs and continue to expand the total addressable market for VOQUEZNA products. We're excited about these programs and anticipate sharing more information about our progress in the future. Later in the call, Molly will further detail our fourth quarter and full year 2023 financials, for which we reported revenues of $682,000 and ended the year with $381 million in cash. Overall, we believe our strong balance sheet will enable us to continue delivering on our launch and development strategies.

I've previously stressed several foundational dynamics that are necessary for a potential blockbuster drug. These included a significant addressable market, clear unmet need among patients, demonstrated superiority and physician's demand. The qualitative feedback from these early months of launch has bolstered our belief that these elements are present in the GERD market. It now comes down to us executing on our strategy and this team is poised to deliver. These are exciting times for Phathom as we continue to make progress on both the commercial and development fronts. This year is sure to be filled with new milestones and will set the foundation for the future of VOQUEZNA. Our pursuit of becoming the number one prescribed acid suppressant in the U.S. is off to a strong start and we remain steadfast in delivering on our strategy of driving blockbuster potential through continued market expansion.

I will now turn the call over to Martin to dive deeper into our launch progress. Martin?

Martin Gilligan: Thanks, Terrie and hello, everyone. I'd like to first echo Terrie's comments that we're very happy with how the launch of VOQUEZNA has started. We're progressing as anticipated and our prelaunch research is being validated by the feedback we're hearing from physicians and patients. During today's call, I'll touch on both quantitative and qualitative elements from our launch. But I know many of you on this call are most keen to hear about our script data, so let's start there. Today, we're reporting script data as of February 23 from both, a IQVIA and BlinkRx which represents our latest available information. With the second half of our sales force entering the field in early January, this reflects about 7 weeks of our full promotional efforts.

This has translated to achieving over 3,800 filled prescriptions which have reached patients' hands. As our reps continue to promote to physicians and garner the backing of strengthened commercial coverage, we expect positive script momentum to continue. Additionally, our KPIs indicate that over 1,200 unique prescribers have written VOQUEZNA scripts that has ultimately been filled. Among those writers, we are already seeing repeat prescribing which builds our confidence that physicians recognize VOQUEZNA's value for patients. We are encouraged by the initial breadth of this prescriber base and anticipate it will grow as we further engage with high-volume targets. Another important metric that Terrie mentioned was total demand. We estimate that upwards of 14,000 prescriptions have been written since the start of launch.

We believe the significant amount of demand to be indicative of the high level of unmet need in the market. It demonstrates that patients are interested in trying something new and physicians are willing to write for VOQUEZNA. As you've heard us say historically, providing access to patients is key to converting demand. As with all new products, negotiating coverage with payers is an essential step in achieving a successful launch and this process often takes time. In anticipation, we established a patient support program through BlinkRx which has meaningfully expanded patient access, resulting in an increased number of filled scripts. Early data shows the use of BlinkRx growing consistently accompanied by positive feedback. However, there are still physicians sending scripts to their patient's long-established retail pharmacies.

Although this has led to a proportion of early VOQUEZNA prescriptions not being filled, we believe we are well positioned to convert more of these scripts over time. In the near term, our sales force continues to emphasize the availability of BlinkRx to physicians as it often represents the best option for getting VOQUEZNA into patients' hands. And ultimately, future contracting with PBMs and health plans will increase payer access and narrow the gap between total demand and filled scripts. In fact, with VOQUEZNA now on formulary at the first of the 3 major PBMs, we are already making progress on that front. The first major PBM contracting win was with Express Scripts, often referred to as ESI. About 3 weeks ago, we announced the positioning of VOQUEZNA on ESI's National Formulary.

This was a key accomplishment for Phathom, expanding VOQUEZNA's availability to roughly 23 million additional commercial lives. Our team was able to secure non-preferred brand status with a single step edit exactly as intended. The single step is with respect to use of generic PPI prescriptions within the last 130 days. These criteria will be evaluated at the pharmacy counter electronically, avoiding any administrative burden for physician or office staff. Alternatively, if the patient use over-the-counter PPIs instead of prescriptions during that time period, they could also satisfy the single step by means of a prior authorization with attestation by their doctor. This latter avenue for access is a significant development as it means ESI patients could potentially access VOQUEZNA as a first-line treatment.

As intended, this formulary position provides physicians a straightforward path to accessing VOQUEZNA for the broadest patient population. VOQUEZNA's total commercial coverage now reflects an estimated 60 million commercial covered lives. Achieving this level of commercial access, less than 3 months into product availability is fantastic but we know there is still work to be done. We believe our progress so far bodes well for our other ongoing negotiations where we remain focused on securing VOQUEZNA coverage with similar formulary position. We are confident in our strategy and believe it will continue to yield expanded coverage, resulting in an uptick in filled prescriptions throughout the remainder of 2024. Shifting to our promotional efforts, the sales reps continue to report back that VOQUEZNA is generating enthusiasm with prescribers.

Physicians are articulating patients' unmet need and recognizing VOQUEZNA's value as a treatment option. The reps are focused on their reach and frequency among our full call panel of approximately 52,000 targets. In parallel, we are working diligently to reach patients suffering from the conditions for which VOQUEZNA is approved. In these early days, we are happy to see that we appear to be making an impact. To date, we've had over 185,000 visits to our consumer website and we're hearing from physicians' offices that patients are asking VOQUEZNA. Patient requests are a key component of our demand strategy and market research conducted with 200 of our target physicians, almost 80% stated they would grant VOQUEZNA upon request for their Erosive GERD patients.

With this in mind, we plan to initiate a new branded consumer campaign which has been met with positive and motivating feedback from test audiences. This campaign speaks directly to a Erosive GERD patients and their symptoms. Most notably, this will include TV commercials on popular streaming services. So if you suffer from Erosive GERD, keep an eye on for VOQUEZNA on your devices, starting later this month. In closing, I'm extremely happy with the commentary we're hearing from prescribers and how it translates into demand. We are successfully executing our launch strategy with continued promotion of physicians, a broadened consumer campaign and expanded commercial coverage; we anticipate significant growth in filled prescriptions over the course of 2024.

Our teams are energized and committed to our belief in the blockbuster potential for VOQUEZNA. I'll now pass it off to Molly to walk through our financial results. Molly?

Molly Henderson: Thank you, Martin and hello to everyone on the call. I'm happy to share our fourth quarter and full year 2023 financial results with you today. This is a momentous earnings call for Phathom as it is the first time we are reporting net revenues for our VOQUEZNA products. Although revenues reflect about a month of launch activity, we are pleased with the initial results. I'd like to note 2 items before going into the numbers. First, during this call, we will not be providing financial guidance regarding projected annual revenues, spend or earnings as we are still early months of launch. Additionally, I will be commenting on both GAAP and non-GAAP financial measures. Supporting schedules with detailed reconciliations between non-GAAP measures and their most directly comparable GAAP measures will be discussed later in my section and can be found in this morning's press release.

Now, turning to the numbers. For the fourth quarter 2023, we reported net revenues of $682,000 and driven by the initial stocking of wholesalers in December. This reflects a partial quarter of sales given that VOQUEZNA bottles became commercially available as of November 28 and VOQUEZNA Paks as of mid-December. Additionally, we reported gross profit of $515,000 for the fourth quarter 2023 which equates to a gross margin of approximately 76%. The cost of revenues includes royalties owed to Takeda and excludes certain inventory costs which were expensed prior to receiving FDA approval. Note that the royalties owed as part of our revenue interest financing agreement are not captured in cost of revenues but rather in other interest expense. Moving down the P&L to our spend.

We reported non-GAAP R&D expenses of $6.1 million for the fourth quarter of 2023, compared to $14.3 million for the same period in 2022. As for SG&A, we reported non-GAAP expenses of $39.7 million for the fourth quarter of 2023, compared to $25.7 million for the fourth quarter 2022. On a full year basis, we reported non-GAAP R&D expenses of $37.6 million for 2023, compared to $65.9 million for 2022. And for SG&A, our non-GAAP expense was $85.2 million for 2023, compared to $82.4 million for 2022. On a full year and a quarterly basis, the decrease in R&D expenses was primarily related to lower clinical trial costs as we concluded our Phase III Non-Erosive GERD daily dosing trial during 2023. Regarding SG&A, our increase in spend was driven by the build-out of our commercial infrastructure and initiation of marketing activities in support of the commercial launch of VOQUEZNA.

Additionally, the most significant reconciling item between GAAP and non-GAAP OpEx expenses for the period was noncash stock-based compensation, largely associated with the vesting of performance shares upon the approval of Erosive GERD. Other non-GAAP reconciling items include noncash interest on our revenue interest financing liability and noncash interest expense related to the amortization of debt discount. Turning to EPS; we reported GAAP net loss for the fourth quarter 2020 of $79.6 million or $1.39 loss per share compared to $55 million or $1.33 and loss per share for the fourth quarter 2022. Non-GAAP adjusted net loss for the fourth quarter for 2023 was $46 million or $0.80 loss per share compared to $42.2 million or $1.02 loss per share for the same period in 2022.

As of December 31, 2023, cash and cash equivalents were $381 million. This includes $175 million received during the fourth quarter of 2023 from our revenue interest financing agreement upon the approval of Erosive GERD. Also during the fourth quarter, we announced the expansion of our existing term loan facility with Hercules Capital. The amendment provides access to more favorable terms and an additional $100 million in non-dilutive capital, subject to achievement of certain revenue milestones. With this amendment, we now have a total of $160 million available via our debt facility. We believe we are in a solid financial position and reaffirm our expectation that we have cash runway through the end of 2026 based on our current operating plan, expected product revenues and funds available under our term loan.

Lastly, as we shared previously, we expect nominal revenues during these first couple of quarters of launch, while payer coverage is materializing. Additionally, I mentioned our fourth quarter 2023 revenues mostly represented inventory stocking by wholesalers. We expect the sell-through of the stocking to take place during the first quarter of 2024, reinforcing our previous comments regarding nominal revenues during these first couple of quarters of launch. With that, I'll now turn the call back over to Terrie for closing comments. Terrie?

Terrie Curran: Thank you, Molly and thank you again to everyone joining us on today's call. Phathom's accomplishments in 2023 were nothing short of amazing and I'm extremely proud of this team. As we round out Q1 and approach Q2, our primary focus is set on securing formulary placement with payers. We've made great progress on that front so far and anticipate expanded commercial coverage throughout the year. As for the back half of 2024, we believe the planned launch of Non-Erosive GERD daily dosing in July, pending FDA approval, will serve as another key catalyst for driving adoption. We believe VOQUEZNA represents a blockbuster opportunity and this launch is off to an exciting start. The enthusiasm here at Phathom is tremendous and there is much to look forward to in 2024. Thank you, again, for joining us today. We appreciate your continued interest and support. I'll now turn it over to the operator to facilitate a 10-minute question-and-answer session. Operator?

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