The San Francisco AI evaluation startup announced a $50 million Series B on June 25, 2026, but no corresponding Form D has appeared in SEC EDGAR — past the regulatory deadline — and independent verification of its growth claims is nonexistent.

Patronus AI announced a $50 million Series B on June 25, 2026, led by Greenfield Partners, with Lightspeed Venture Partners, Notable Capital, Datadog, Samsung, Gokul Rajaram, and Factorial Capital listed as participants — bringing the company's claimed total capital raised to $70 million. As of this writing, no Form D for that round has appeared in SEC EDGAR.

Under SEC rules, companies completing an exempt offering under Rule 506 must file a Form D within 15 days of the first sale of securities. The 15-day window from a June 25 close would have lapsed around July 10. EDGAR's only record for Patronus AI, Inc. (CIK 0002026190) is a Form D filed June 6, 2024 — a prior round that discloses no specific amount. The company's principal address is listed as 2261 Market Street, San Francisco; that 2024 filing used a Dublin, CA residential address for the registrant, an unexplained discrepancy in the public record.

The absent filing does not make the round a fiction. Greenfield, Notable Capital, and Lightspeed are real firms, and if they participated, a Form D will eventually appear. But "eventually" has a regulatory meaning: the deadline has passed. And the surrounding claims compound the question. Patronus AI says it counts "virtually every frontier AI lab" as a customer and has achieved 15x revenue growth. Both figures trace entirely to the company's own press releases and a LinkedIn article by co-founder and CTO Rebecca Qian — not an independent party. Revenue estimates from the data aggregator Getlatka.com explicitly disclaim any direct interview with management. No procurement databases — SAM.gov or California's calpurchasing.ca.gov — list the company as a vendor. A California Public Records Act request filed in January 2026 for SFPD AI vendor contracts surfaced no Patronus AI documents, per MuckRock records.

LinkedIn puts the company at 29 employees. Co-founder and CEO Anand Kannappan is simultaneously listed as CFO and Secretary in California state filings — consistent with a startup that hasn't yet staffed a real finance function, less consistent with the Fortune 500 customer base the press release implies. The company's Hacker News footprint, across multiple product launches dating to 2023, tops out at four points and two comments.

What to watch: the Form D on EDGAR for CIK 0002026190. When it appears, it will confirm the amount sold, the date of first sale, and the named investors — or flag their absence. If nothing is filed by the end of July, that is itself a material fact. The "15x revenue growth" figure and the enterprise customer claims remain, as of now, unverified by any public document.