Exosonic was founded in 2019 by Norris Tie, a propulsion engineer who cut his teeth at primes like Northrop Grumman and Lockheed Martin; at the latter company, he reportedly worked on the low-boom X-59 aircraft for NASA. Exosonic joined Y Combinator’s Winter 2020 cohort and went on to raise over $4.5 million from venture investors, including Soma Capital, Psion Capital, and Stellar Solutions. The startup also bagged several small grants from the U.S. Air Force under its Small Business Innovation Research (SBIR) program.