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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!

9/19

Broader Defense Tech:

Harpoon x Firestorm Mixer Debrief

El Segundo Defense Tech Mixer Debrief

Firestorms Labs opens 60,000 SFT Facility in Mira Mesa

Biotech:

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 Asia

Yatiri - acquired another startup

Luna Diabetes raises a Series A

Curated Events List – For full list – check The Social Coyote

Sept 26 - Defense Tech Gathering

Oct 3-5 Startup Weekend

Oct 6-10 SD Startup Week

This Week in San Diego Tech – Sep 19, 2025