The round was co-led by General Catalyst and Rally Ventures with participation from long-time Ostra investment partner Jeff Cowan at CapitalFour. The new capital will accelerate hiring, deepen technical capabilities, and expand the tailored service model already resonating with businesses under pressure to secure their operations without adding internal burden.

Ostra Security replaces tool sprawl and costly shelfware with hands-on, white-glove protection that adapts to each client's unique environment and needs. Ostra Security goes beyond alerts to own real outcomes, delivering measurable risk reduction, board-ready reporting, and a true partnership that feels like an extension of your team.