Good day, ladies and gentlemen, and welcome to the Liquidia First Quarter 2019 Financial Results and Corporate Update Conference Call. At this time all participants are in a listen-only mode. Later we'll conduct a question and answer session and instructions will follow at that time. [Operator Instructions] I would now like to introduce your host for today's conference, Ms. Jenny Kobin. You may begin.

Thank you, and good morning. Welcome to Liquidia Technologies first quarter 2019 financial results and corporate update. Today's call will include forward-looking statements pursuant to the Private Securities Litigation Reform Act of 1995 based on current expectations. Such statements represent management's judgment as of today and may involve significant risks and uncertainties that could cause actual results to differ materially from expected results. Please refer to Liquidia's filings with the SEC which are available from the SEC at sec.gov or from Liquidia's website at liquidia.com, for information concerning risk factors that could cause such differences and otherwise affect the company. I would now like to turn the call over to Neal Fowler, CEO of Liquidia.

Good morning, everyone and thank you for joining us. On the call with me today are Tim Albury, Interim Chief Financial Officer; and Dr. Rob Roscigno, Senior Vice President of Product Development and program lead for LIQ861. This morning, I will summarize our recent accomplishments and provide an update on our two pipeline programs, LIQ861 and LIQ865. Tim will provide a summary of our financial results for the first quarter of 2019 and then, I will wrap up with an update on our upcoming key milestones. After our prepared remarks, we will open the call for your questions. We had a productive quarter and continued to execute as planned. I'd like to summarize the accomplishments, since our last earnings call. We completed enrollment of the INSPIRE study, our single pivotal Phase 3 trial evaluating LIQ861 in patients diagnosed with pulmonary arterial hypertension or PAH. We met the primary endpoint of the INSPIRE study by demonstrating safety and tolerability of 861 at the two-month time point. We presented top line data in April from the INSPIRE study at the 39th International Society for Heart and Lung Transplantation meeting, including preliminary data on exploratory endpoints supporting functional and patient outcomes. We initiated Phase 2 enabling toxicology studies for LIQ861, an injectable, non-opioid, sustained release formulation and bupivacaine for the management of local post-operative pain. And we strengthened our capital resources, adding $34.5 million in gross funding. The rapid succession of these accomplishments is an excellent indicator of our team's ability to focus and execute and with those highlights in mind, I'd like to provide some additional details on our two current pipeline programs starting with LIQ861. As a reminder, 861 is an inhaled dry-powder formulation of treprostinil, a prostacyclin analog used to treat PAH by targeting the pulmonary arteries. Like approved nebulized…

Thank you, Neal, and good morning everyone. Our first quarter 2019 financial results can be found in the press release issued earlier today, which is available also on our website. We will also file our quarterly 10-Q with the SEC later today. I'll briefly summarize these results now. We reported no revenue for the first quarter 2019, compared $0.9 million for the year-ago quarter. Our historic revenue was primarily derived from collaborating and licensing our proprietary, PRINT technology to pharmaceutical companies. The decrease in revenues was as expected, given our shift towards prioritizing development of our own pharmaceutical products, 861 and 865. Research and development expenses were $10.7 million for the first quarter of 2019, compared to $7.6 million for the year ago quarter. R&D expenses increased as we expected, primarily due to our ongoing INSPIRE Phase 3 clinical trial for 861, which commenced in December 2017. General and administrative expenses were $3 million for the first quarter of 2019, compared to $2.1 million for the year ago quarter. The increase is primarily due to employee related expenditures, including stock-based compensation and public company costs, partially offset by a decrease in professional fees. Interest expense was $0.2 million for the first quarter 2019, compared to $17.9 million for the year ago quarter. The decrease is primarily due to lower levels of debt as a result of the conversion of convertible notes into shares of Series D preferred stock in February 2018. The net loss for the quarter of 2019 was $13.8 million, compared to $27.5 million for the year ago quarter. The change is primarily due to lower interest expense, which was partially offset by decreased revenues and increased R&D and G&A expenses. Moving onto the balance sheet, as of March 31, 2019, cash totaled $60.8 million and there were 18.6 million shares of common stock outstanding. In March, we completed an offering of 3 million shares of our common stock for gross proceeds of $34.5 million or approximately $31.7 million net of underwriting discounts, commissions and offering expenses. I would now like to turn the call back over to Neal.

Thanks, Tim. 2019 is a pivotal year for Liquidia, and as we prepare to submit an NDA for LIQ861 and plan for commercial success, our key upcoming milestones will be to report 861 bioavailability and PK properties of treprostinil in the second quarter. Initiate a European trial to assess the effects of 861 on acute and chronic hemodynamic measurements, submit an NDA for 861 in late 2019, present longitudinal data on 861 at key medical conferences, and complete toxicology studies that support 865 being Phase 2 ready by the end of the year. We're excited about the opportunities before us to make a difference for patients and create stockholder value. Liquidia has innovative technology, strong resources and an outstanding team with a track record of delivering on our plans. We look forward to updating you on our progress in the coming months, including presentations at the Jefferies Healthcare Conference in June and the Wedbush Healthcare Conference in August, both in New York City. Thank you for your interest and continued support. I will now turn the call over to the operator to take your questions.

[Operator Instructions] Our first question comes from Stacy Ku with Cowen and Company. Your line is now open.

Hi, Tim. Thanks for taking my questions. Congratulations on the progress. So acknowledging the heterogeneity of the PAH population, could you comment on the average dose of 861 for the two cohorts in the INSPIRE study? And what the portions of PAH patients were dosed up to the higher doses? And I have a follow up.

Good morning, Stacy, this is Rob. At this time, we have not disclosed the dosing information for the study. We're still tabulating that and over time, we will be sharing that.

And so tend to get the feeling from commissions that each of these PAH patients often have a pretty unique treatment scheme. Can you help us understand the nuances better to clarify kind of maybe for the Add On cohort where they are typically on one or two more -- one agent or two or more agents? Thanks.

Sure, It's a very good question. So with the PAH patients that we've studied in the INSPIRE study, the Add On patients typically came from those patients who are either on one or two approved non-prostanoid PAH -- approved PAH drugs. Many of them were on what's known as the ambition protocol combination, which is an ERA plus a PDE5, that's standard practice when those products are available to the clinicians that they would start those patients. And with 861, 861 would be added as a -- starting on a 25 microgram dose, four times a day and increased to manage symptom relief balance with tolerability. Regarding the transition patients, transition patients are typically started at a dose of a slightly lower dose than their Tyvaso dose and then titrated the same way to manage symptom relief and balance that with tolerability.

Our next question comes from Liana Moussatos with Wedbush Securities. Your line is now open.

Thank you for taking my questions. What are the plans and timing for European regulatory submission and commercialization of 861? And then, will you be able for 865 to start Phase 2 in the first half of 2020, and can you give us any insights on the Phase 2 design?

Hi, Liana, it's Neal. Thanks for your question, both of them. The first one with regard to Europe, again, we will -- our hemodynamic study that I referred to earlier will be our first kind of foray or footprint into Europe, obviously those data are not required by FDA here but they will obviously help our story as it pertains in a global sense. Our plans in Europe are to obtain a co-development partner and ultimately, someone to market the product in Europe. And given the fact that Tyvaso is not approved in Europe that development timeline will be longer than what we've seen here in the US. But we're very encouraged by the opportunity in Europe and in plan to move accordingly toward that with a partner. As it pertains to 865, we're not giving any guidance yet with regard to exactly when we'll do that study. We want to get our toxicology data as I indicated this year, but rest assured that our plans are to move into Phase 2 as soon as possible. We are very encouraged by the market opportunity that is there, a tremendous amount of unmet need and we have a product in our opinion that we will definitely address that need.

Our next question comes from Serge Belanger with Needham & Company. Your line is now open.

Good morning. My first question is about the upcoming read out on that bioavailability and PK data this quarter. Just given your experience in INSPIRE with the Tyvaso, Add-Ons, what do you expect for this data? And is there any read through from INSPIRE that we can look forward to here?

Yes, good morning, Sege. It's Rob again. So we plan to release the data when it's available as we have previously stated and we are encouraged already exactly by what you were speaking to the preliminary and exploratory endpoint data we released earlier this quarter as well as what was presented at ISHLT is a good indicator that 861 is being dosed at therapeutic levels, and we expect that to be reflected in the data.

So is success showing a similar bioavailability of PK than to Tyvaso?

The definition of comparative bioavailability by the agency is less stringent than that, and I want to remind everyone we are not being held to the level of bioequivalence.

And then, just the -- I think you announced you'll be presenting data at the American Thoracic Society meeting. Will this be some of the INSPIRE data, an additional set that we haven't seen yet?

It will be a deeper dive into what was the two-month data.

At this time, I'm showing no further questions. I'd like to turn the call back over to Mr. Fowler for closing remarks.

Thank you very much, and thanks to everyone for joining us on the call today. We appreciate your interest and investment in Liquidia, and we look forward to being in touch and updating you on our continued progress. Now, thanks to everyone and have a great day.

Ladies and gentlemen, thank you for your participation in today's conference. This does conclude the program, you may now disconnect. Everyone have a great day.