This Week in San Diego Tech – Sep 19, 2025

Listen & subscribe on Apple, Spotify, YouTube, and other platforms.Welcome everyone to the weekly San Diego Tech News!I’m Neal Bloom from Rising Tide Partners and the Tacos and Tech Podcast.My co-host in this episode is Fred Grier, journalist and author of The Business of San Diego substack. He covers the ins-and-outs of the startup world including breaking news, IPOs, fundraising rounds, and M&A through his newsletter.Before we dive in, we wanted to thank and ask our listeners to help us grow the show, leave a review and share with one other person who should be more plugged in with the SD Tech Scene. Thank you for the support and for helping us build the San Diego Startup Community!9/19Broader Defense Tech:Harpoon x Firestorm Mixer DebriefEl Segundo Defense Tech Mixer DebriefFirestorms Labs opens 60,000 SFT Facility in Mira MesaBiotech:Treeline Biosciences emerges from stealth with $200M backed by ARCH Venture.Arnatar Therapeutics focused on precision RNA therapies emerges from stealth.Debut Bio raises and expands to AsiaYatiri - acquired another startupLuna Diabetes raises a Series ACurated Events List – For full list – check The Social CoyoteSept 26 - Defense Tech GatheringOct 3-5 - Startup WeekendOct 6-10 - SD Startup Week This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit risingtidepartners.substack.com/subscribe