Hey, thank you so much, Stuart. This is Michael Mo, and thanks to everybody's time today to join our Q3 2021 shareholder investor update call.
For today's call, I’ll first talk about our Q3 business highlights and provide updates on recent developments. Keith Cochran provide operation updates. Simon Westbrook will then talk about financial highlights for Q3, and then we'll have Q&A session as we talk about sort and conclude our call today. I am very pleased to report that KULR’s Q3 revenue increase by over 300% year-over-year, as we continue to make significant investments and execute our business strategy.
Our gross margin was 74%, which is a function of favorable product mix for the quarter. This is really an important and exciting quarter for all of us at KULR, not only because of the financial figures, but also the validation of our long term strategy and the execution that's delivering solid foundation for future growth. Since the inception, KULR’s long term strategy has been to co-develop cutting edge thermal management technologies alongside NASA, U.S. Department of Energy and U.S. Department of Defense, prime contractors while working closed collaboration with regulatory agencies and international testing organizations.
Our intent was to incorporate these technologies into regulatory roadmaps and also mass market applications.
As we deployed these technologies into mass markets, such as energy storage and electric transportation, we look to leverage our IP across multiple verticals and capitalize on multiple revenue streams to accelerate our revenue growth.
Our battery safe case is a perfect example of how that strategy is showing signs of success. This technology was tested by NASA and has been used on international space station to keep the astronauts’ laptop, and tablet battery safe from battery thermal runaway propagation since 2019. Then we worked with U.S. Department of Transportation to provide the safety testing data of protecting commercial batteries up to 2.1 kilowatt hours in energy capacity. With that work, we received DOT special permits for recycling, used DDR and prototype batteries to be transported by ground, rail, boat and air in Q3 of 2021. This has been a long process and we got it done. We believe that KULR-Tech Safe Case is the only solution in the market that has all these permits and capabilities.
Now we are taking this space proven technology with DOT special permits into the commercial world. KULR partnered with Heritage Battery Recycling to provide safe transportation of battery collection operations across North America. Heritage Battery Recycling has over 100,000 customer locations, 2,500 employees and a fleet over 1,300 power units in over 100 facility locations. They recently merged with Retriev Technologies to become the largest lithium-ion battery recycler in North America.
We are very excited about this partnership. KULR also joined Clarios in the U.S. Department of Energy in lithium-ion battery lifecycle initiative to develop the manufacturing, and the reuse of lithium-ion batteries and their chemical elements in the United States. Clarios is the largest lead asset battery maker in the U.S., in this project KULR will provide safe transportation of lithium-ion batteries within the full battery management life cycle from manufacturing through recycling and through reuse.
Our goal is to provide a total battery safety solution for more efficient battery systems, increase sustainability and analyze battery management, making KULR, a key pathology provider into migration to the global circular economy.
In addition to the KULR-Tech Safe Case product, we continue to make significant strides in our other products and developments. We announced CellCheck product in our Battery Solutions Day of September the 21. We're very, very excited about this project and this product.
As we believe that to be the smartest AI power battery management system of its kind, integrated with our thermal management technologies. This is another significant step for us to position KULR as the one-stop shop of total solutions provider for battery thermal energy and safety management. Keith will give you some more updates later on. At the Battery Solutions Day, we also share with you that we started a research and development initiative using carbon fiber structures to produce battery cells with higher energy density and faster charging capabilities. We believe fast charging would be the killer app for the next generation batteries. Right now over heating is a key limiting factor in advancing fast charging technology. We'll be developing and testing new party battery architecture with a carbon fiber matrix that can improve the thermal performance and also make thicker cathode structures where higher loading factors and also anode structures with silicon and lithium metal. We want this architecture can work with the existing lithium-ion battery chemistries as well as solid state electrolyte. This is a long-term strategic development for KULR that we expect to share more performance and testing data with you in early 2022.
Another very exciting development that we're working on is to apply our advanced carbon fiber solution that was developed for hypersonic program to high performance computing applications.
Our team worked on the X-51 hypersonic vehicle with a liquid cooling thermal management system, utilize our proprietary carbon fiber matrix.
Now we're working on applying that technology to cost effectively cool high power computer chips for applications such as cloud computing, AI, virtual reality simulation or somebody will call metaverse and crypto mining applications. The key is to take away the heat more efficiently from the chip to the liquid or air, and therefore allowing the chip to run faster without overheating or consume less energy with the same amount of processing problem. This will allow the server and data centers to run more efficiently, more sustainably and profitably. We look forward to share more updates with you in the near future.
On the capital market side, there was also some significant events doing Q3 instance. On July 9, KULR celebrated it’s uplifting to the NYSE American exchange by ringing the closing bell at the New York Stock Exchange. That was a very exciting day for all of us. And in October and November, KULR received approximately $6.5 million in cash from exercise of warrants to purchase an aggregate of 2.6 million shares, which was part of our May 2021 financing. Combine that with our approximately $11 million cash position at the end of Q3 and with no debt, KULR is in its strongest financial position in its history. On November 17, options start trading on KULR on the NYSE American options. And we also honored to have Vanguard Funds now our largest institutional shareholder with approximately 3% ownership. We're so thrilled and honored to have them as our one of the largest shareholders alongside other institutional shareholders, such as State Street, Northern Trust and Charles Schwab. We've come a long way since our OTCQB days, but we feel like we're just getting started on our mission.
Speaking of just getting started Keith Cochran will get an update on the growth of our team, our new facility and development of new programs. Keith, please.