Greenfield Partners

Venture capital firm

Portfolio

1 total
Patronus AI

Recent Investment Activity

1
DateCompanyEventAmountValuationInvestorsSource
Jun 25, 2026Patronus AISeries B$50M—
Greenfield PartnersLightspeed Venture PartnersDatadogSamsungNotable Capital
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Co-Investors

3
Datadog · 1 sharedLightspeed Venture Partners · 1 sharedSamsung · 1 shared

Latest Pulse

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  1. Patronus AI Lands $50M to Build Digital Worlds That Stress-Test AI AgentsPatronus AI raised a $50 million Series B led by Greenfield Partners, with Lightspeed, Notable Capital, Datadog and Samsung participating, bringing total funding to $70 million. The startup builds simulated digital environments -- replicas of websites and internal systems -- where AI agents are stress-tested before deployment, and counts nearly all frontier labs among its customers after 15x revenue growth.→
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