Thank you. And good afternoon, everyone. Welcome to Westport Fuel Systems first quarter conference call which is being held to coincide with the press release containing Westport Fuel Systems financial results that was distributed this afternoon. On today's call, speaking on behalf of Westport Fuel Systems, is Chief Executive Officer, David Johnson, and Acting Chief Financial Officer, Jim MacCallum. Attendance at this call is open to the public and to media, but questions will be restricted to the investment community. You are reminded that certain statements made in this conference call and our responses to various questions may constitute forward-looking statements within the meaning of the US and applicable Canadian securities law and, as such, forward-looking statements are made based on our current expectations and involve certain risks and uncertainties. Actual results may differ materially from those projected in the forward-looking statements, so you are cautioned not to place undue reliance on these statements. Information contained in this conference call is subject to, and qualified in its entirety, by information contained in the company's public filings. I will now turn the call over to David. David? Thank you, Shawn. And thank you all for joining the Westport Fuel Systems Q1 2019 conference call. I'm pleased to share our Q1 2019 financial results and also talk to you about our key drivers advancing the clean transportation industry globally, discuss how those forces are impacting our business. Our strong Q1 results are a validation of our strategy. They are the latest proof point that stringent emission regulations and increasingly urgent call for action on urban air quality and climate change are advancing the deployment of alternative fuel vehicles. Our market-ready solutions align well with the market's need for clean, cost-effective transportation and enable us to respond directly to our OEM customers, partners and to consumers. We're encouraged by how the market for clean transportation is developing and by the demand we are seeing for our products. Since our prior earnings call, I've had the opportunity with even more employees, partners, customers, suppliers and shareholders. Next, I'm on to South America, Japan and then back to Europe. Our Westport Fuel Systems team is committed to deliver clean, market-ready, cost-competitive technology to transportation customers around the world. Given the company's long legacy, it is particularly rewarding to see that our entrepreneurial, research and product development efforts have created a diverse portfolio of products that we sell in nearly 70 countries for applications from small single cylinder engines to large engines for commercial vehicles. As a clean technology company, we are proud of what we're doing and we're excited to grow our business and respond to regulations and market demands. I'm also pleased to announce that, last month, we published the first Westport Fuel Systems sustainability report. It was prepared in accordance with Global Reporting Initiative Standards and encompasses our entire global operating footprint. It establishes our baseline for corporate and social environmental performance. While the economic and environmental benefits of our products are well established, we took the opportunity to more transparent reporting environmental and social impacts of our global operations. This is really an important milestone for our team and documents our leadership position in the clean transportation industry. Let me now turn to our Q1 results. Q1 2019 revenue was $73.2 million, an increase of 15% over Q1 2018 and 21% over Q4 2018, a great quarterly performance result following our 18% full-year increase in 2018 versus 2017 as reported during our last call. Sales of Westport's HPDI 2.0 in Europe are accelerating and we're working hard to deliver Weichai's launch of HPDI 2.0 in China later this year. With Q1 2019, we recorded our fourth consecutive quarter of positive adjusted EBITDA. We earned a positive $7.3 million on an adjusted EBITDA basis compared with negative $3.4 million in Q1 2018. That's a $10.7 million improvement in operating results. Our trend line is positive and consistent and speaks to the sense of urgency we have to deliver results quarter after quarter. Cummins Westport also had a great quarter with Q1 2019 revenue of $92.3 million. Overall, a very strong quarter with contributions from across the entire Westport Fuel Systems business. Let me now make a few observations that I see regarding the market. As we discussed last time and as we expected, Europe has enacted its first CO2 regulations for heavy-duty vehicles with a vote on April 18 in the EU parliament. Under these new rules, heavy-duty truck OEMs will be required to achieve a fleet average CO2 reduction of 15% by 2025 and 30% by 2030 compared to a 12-month baseline that will be created starting this July 1. Our HPDI 2.0 technology provides a 20% reduction of CO2 when implemented on current generation heavy-duty truck engines, which means current generation trucks can meet these new regulations through 2029. If we combine the HPDI with a blend of renewable natural gas, that will enable compliance with 2030 regulation and beyond. This means that HPDI 2.0 allows OEMs to preserve their considerable investment in existing engines and existing trucks and to meet these new regulations with a technology that's clean, affordable and commercially available today. We have already seen the impact of these regulations via increased demand for HPDI. First, fleet customers are buying HPDI-equipped trucks from our OEM lead customer in Europe. Second, we see demand for development activities to support customers who will add HPDI to their product portfolio. Westport's HPDI 2.0 is the only technology that is developed, validated, certified and in production and for sale today that fully and affordably responds to the new CO2 regulations in Europe. Next, we've noticed that the drumbeat for cleaner passenger vehicles and light commercial vehicle continues in markets around the world. There's been a rolling newsfeed of different countries announcing bans on petroleum and diesel vehicles. Our internal tracking counts 15 countries across Europe and Asia with target dates as soon as 2030. Target date is an important phrase since most, if not all of these statements, remain simply that – targets and intent. Nonetheless, we expect the regulations will come and consumers and OEMs share this expectation. The trend and the market signals are loud and clear. One example of the impact of this changing sentiment, especially against diesel, is the reduction in sales of diesel passenger cars in Europe. The share of diesel cars purchased is down by 5 percentage points from 36% in March 2018 to 31% this March. Alternative fuel vehicles are picking up some of this share. And we do hear it also from our OEM customers. Our customer in India, for example, Maruti Suzuki announced in April that they are evaluating the phaseout of diesel cars as the new Bharat Stage VI, which is equivalent to Euro VI emissions when these regulations come into effect April 1 of next year. Meeting this BS VI standard with diesel engines will be costly and the Indian market is very cost sensitive. Natural gas powered vehicles will pick up some share because ours is a cost-effective solution. Next, let's talk about climate change and the urgency of action to address this challenge. We need to deploy market-ready, cost-competitive, efficient transportation solution like ours and we need to do it now. Natural gas and renewable natural gas remain a foundational element of an all-of-the-above transportation strategy. There is no silver bullet that decarbonizes the freight sector and all technologies have a role to play. Commercial fleets' purchasing decisions are driven by economics and fleets will deploy what works best for them. Natural gas has already addressed the infrastructure, logistics and scale of challenge that are now faced by other technologies. Natural gas is market-ready now. The transportation sector is on the cusp of a dynamic change. It's important not to confuse tradeshow announcements around prototypes and demonstrations with production solutions like ours that can be purchased and put to use right now. And just to wrap up, clean fuels like natural gas are available and cost competitive today. Natural gas for transportation is a renewable energy story. The significant increase of renewable natural gas as a transportation fuel offers another proof point that there is a pathway for deep decarbonization using gaseous fuels. A recent report from NGVAmerica and Renewable Natural Gas Coalition highlights that, since 2014, RNG use in transportation in the United States has increased sixfold, displacing over 7 million tons of carbon dioxide equivalents. In California, where we had a strong penetration of natural gas in transit buses, refuse trucks and other applications, about 70% of the natural gas used in transportation is already renewable. And Sweden is leading the way to a fossil free transportation sector by 2030. They already have 91% renewable natural gas share in their transportation mix. These examples reflect what we hear from our customers that market trends continue to strengthen, trends that we also see in our financial results, our order book and in our development pipeline activities for future customers. The strength of our OEM and aftermarket business in key markets and the growth of HPDI in Europe and China ensure that we are well-positioned to capitalize on the opportunity. Before I wrap up and hand over to Jim, let me remind you of our strategic priorities for 2019. Number one, deliver sustained growth of our light duty and medium duty businesses through both the aftermarket and OEM channels. Two, acceleration of HPDI commercialization. This means more volume with existing customers, successful launch in China, new customers, lower costs and increased margin. And third, continued focus on aligning our corporate cost structure with our revenues through cash flow and operating results. 2019 is already off to a great start and looking forward to the rest of the year and beyond. With that said, I'll turn it over to Jim to review Q1 2019 financials. Jim?