Tom Bell
Chief Executive Officer at Leidos
Thank you, Stuart, and good morning, everyone. It's very good to be with you again today, and I'm thrilled to report a very robust start for Leidos in 2024, a substantial raise to our full-year guidance, and some additional details around the purposeful steps we're taking to position Leidos for an awesome future. The Leidos team got out of the starting blocks impressively this year, addressing our customers' most vexing challenges with passion and pace and as a result, delivering an excellent quarter of top and bottom-line results.
First-quarter revenue grew 7.5% year-over-year, all organically. First-quarter adjusted EBITDA margin was 12.3%, a record for Leidos. And year-over-year non-GAAP EPS grew 56%. These results demonstrate that our new capability-based organization is unlocking significant value across the Company. With good cash generation, as promised, we began our 2024 stock buyback program by repurchasing $150 million worth of shares on the open market during the quarter.
You'll remember that during our last earnings call, I framed our initial 2024 guidance against the backdrop of a very good year for Leidos in 2023 and a very uncertain 2024 customer budget environment. Happily since then, the House and Senate have passed appropriations for all the federal government. And now with funding in place, our customers have the resources and direction they need to confidently execute their missions. With that certainty in our customers' budget, the quick success of our organizational realignment, and our team's strong start to the year, we have increased confidence in our near-term growth prospects. As such, we are significantly increasing our 2024 guidance and now expect to far exceed our previous multiyear financial commitments.
Chris will detail our new 2024 guidance later in the call. As I round out my first year at the helm of Leidos, I remain impressed with the capability of our people to deliver for our customers and shareholders. Over the last four quarters, revenue has grown 8% and non-GAAP EPS has grown 25%. We've delivered adjusted EBITDA margins of 11.5% and free-cash-flow conversion of 109%. And we've maintained rigorous investments in IRAD and Business Development.
I'm very pleased that we've been able to refine the conversation about what's possible here at Leidos, especially around profitability. Leidos is indeed a healthy business. So for the remainder of my prepared remarks, I'd like to share some additional details about the purposeful steps we are taking to position Leidos for an awesome future. We are achieving and propelling superior profitable growth by focusing on three key elements.
First, continuing to unlock full value and flawless execution in our new capabilities-focused organization. Second, increasing investment in distinct organic disruptive technologies. And third, developing a robust value-creating merit-based Leidos profit and growth strategy. Let me walk through each of these elements with you.
First, we're very happy with the quick wins we're achieving from our capability-based organizational realignment, and we are anticipating that this move will continue to unlock significant value going forward. For example, by consolidating our commercial and international business into a single segment for the first time, we're now better able to truly serve our global customers. In February, I had the opportunity to attend the Munich Security Conference. It was a sobering affair, which made abundantly clear that pervasive global threats are in fact growing. And our collective efforts to help our allies and partners are becoming even more crucial.
To give you an idea of where and how the new Leidos can help, global battlefields of the future demand ever more cross-domain interoperability and leading-edge technical solutions. As we collaborate with our customers and allies around the world, we gain valuable insights into their interconnected issues across borders. Our realignment, which integrates all our international customer touch points into one organization enables us to better correlate and quickly respond with a whole of Leidos solution to their critical emerging needs.
Also, globally, the AUKUS Trilateral Security Partnership represents a unique opportunity for Leidos as Australia, the U.K., and the U.S. seek to work even more closely together. The focus of AUKUS Pillar 2 is seamless information sharing, AI and autonomy, advanced cyber, hypersonics, and electronic warfare. This list reads like a catalog of Leidos' strengths. We believe Leidos through our new commercial international segment is uniquely positioned to serve these ambitions like no other.
Second, we will continue to accelerate investment in distinct organic disruptive technologies. On my first earnings call, I highlighted technology innovation as a core of Leidos. Nearly a year into this role, I can confidently reaffirm that the technology prowess at Leidos is impressive, broad, and deep. Continually sharpening our portfolio of cutting-edge technologies, what I call golden bolts to lead turn the market will remain foundational to our North Star. At Leidos, innovation is everywhere, but we have a particular passion and focus on remaining best-in-class in three technologies. Trusted mission AI, full-spectrum cyber, and secure rapid software.
In each, we maintain a robust IRAD pipeline in what we call accelerators, staffed with incredibly smart people who work across the entire customer solution set. And we combine the resulting immense organic technical prowess with a best-in-class commercial partnership program to truly bring making smart smarter to life.
Let's talk about one of these accelerators. Trusted mission AI spans the breadth of our portfolio and is integral in practically all our customer solutions. Our trusted mission AI solutions work as a partner to humans in transforming the way we deliver high-quality, rapid, and secure outcomes for our customers' most complex missions. For example, across the intelligence community, we have several large classified contracts where we're leveraging trusted mission AI to exploit vast amounts of data to address ever-changing national security challenges.
In the cyber realm, our team of experts has spent the last three years developing the next generation of defensive cyber tools. These tools use AI to automate the discovery of new vulnerabilities and the development of novel defenses. This unique solution allows us to proactively deploy defenses before attacks occur, crucial in foreseeing, averting, and defeating cyber risks. In defense systems, trusted mission AI is the enabling technology that anchors all our autonomy work. We've built the first generation of autonomous vessels for the U.S. Navy, several of which recently transited the Pacific twice as part of a manned unmanned task force, and we're now applying this proven trusted mission AI technology to the next generation of unmanned surface vessels.
In software and IT, we're leveraging our exclusive relationships with key emerging technology providers to bring the best of the latest generation of generative AI to our customers. This enables us to uniquely position our customers to operate more efficiently, delivering real quantifiable impact. Let me share a couple of examples here. Our partnership with Sourcegraph leverages their commercial cutting-edge Gen AI coding assistant to transform the way we develop software. In just a few months, by combining our unparalleled government customer knowledge with their tools power, we've proven productivity increases in software development of one-third. And we know these solutions are deployable even into the most secure customer environments.
Our exclusive partnership with Moveworks gives us a differentiated ability to bring our customers the best-in JI -- Gen AI-based IT service desk solutions. We've already deployed their technology within the Leidos IT environment and have completely automated processing of thousands of service requests. Our focus on integrating trusted mission AI into our customer solutions rather than just selling AI labor positions us uniquely to meet the growing demand for AI solutions across our customers. I trust these examples begin to give you a sense of our leadership position in all our golden bolts, but especially trusted mission AI. But if you'd like to see more of our solutions in action and meet some of our wicked smart people, I invite you to an investors event we will be hosting here at our global headquarters in Reston on 12 June.
Finally, I'd like to give you an update on the development of our strategy for Leidos' second decade of growth. As I mentioned during our last call, this is a year of deep, formally structured strategic conversations across the whole of the business. And while this effort will not be complete until early next year, I did want to share with you now some high-level principles that are guiding our work. Principles of our upcoming strategy will be doubling down on our core strengths, seeking to exploit the power of repeatable business models, making speed a conscious competitive discriminator, differentially investing in the areas of greatest potential, building trusted mission AI into everything we do and uncovering unique opportunities to expand Leidos into logical, closely adjacent growth markets.
These guiding principles will enable us to stay true to what we do best. I'll be quick to respond to the opportunities that are emerging at pace in our market. Also of note, importantly as we think about our strategy, we will continue to view our balance sheet and cash generation capacity as key strategic assets. I remain committed to a disciplined capital management and deployment policy. Continuing doing focus on shareholder returns in the near term.
In closing, we are off to a great start this fiscal year, we are committed to building on our success and deliver smarter outcomes for our customers, shareholders, and each other as we continue to push boundaries and challenge ourselves to think bigger. I am confident that 2024 will be Liedos' best year so far, we'll see tremendous achievements and a crystallizing compelling growth strategy.
With that, I'll pass the call to Chris to discuss our financial results for the first quarter and our financial promises to you for the full year. Chris.