5 companies in San Diego filed this week, up from 2 the week before, against a 12-week average of 2.8. The biggest raise was Polaris Electro-Optics, Inc. at $49.50M, based in carlsbad, CA.
Companies raising per week
Every raise this week
| Based | People named | |||
|---|---|---|---|---|
| Polaris Electro-Optics, Inc. | $49.50M | 2026-09-04 | carlsbad, CA | Morten Nissov, Cory Pecinovsky +5 |
| Gossamer Bio, Inc. | $25M | 2026-09-04 | san diego, CA | Faheem Hasnain, Russell Cox +9 |
| Nuvve Holding Corp. | $14.74M | 2026-09-04 | san diego, CA | Gregory Poilasne, David Robson +4 |
| AlgoChains Inc first filing | $100K | 2026-09-02 | san diego, CA | Tyler Reynolds |
| Agen Genomics, Inc. first filing | $25K | 2026-09-02 | escondido, CA | Christopher Lippe |
First-time filers
AlgoChains Inc, Agen Genomics, Inc. filed their first Form D on record this week.
Reach the founders of these 5 in San Diego companies with verified contacts, and keep them in one pipeline.
Start free in MentionFoxTurn your raise into a launch page, press kit and share cards, built from your own work.
Get your launch kitOther lists this week
New York the rest of the US outside the US Raleigh-Durham San Francisco Bay Area Los Angeles
By sector and metro
AI and software in San Diego Biotech in San Diego Energy and climate in San Diego
Nearby weeks
Week of 2026-08-24 Week of 2026-09-07
How this list is built
Every company here filed a Form D with the SEC in the week 2026-08-31 to 2026-09-06. A Form D is the notice a company files when it sells shares or other securities without a public offering, so it catches seed rounds, small rounds and rounds that were never announced, alongside the large ones that make the news. Only new offerings by operating companies count: amendments, pooled investment funds, real estate vehicles and special purpose vehicles are left out, so each row is a company raising money for itself.
The amount shown is the total the filing reports as sold so far. Some filings report nothing sold yet; those rows show a dash and add nothing to the totals. "First filing" marks a company whose first Form D on record this is. Each company links to our page for the filing, or to the SEC's own copy, and the list can be copied as CSV for a spreadsheet.
Cite this page
https://mentionfox.com/funding/week/2026-36/san-diego