Adam Zeplain

About

Adam Zeplain is the Co-Founder and Managing Partner of mark vc, an early-stage venture firm based in Austin, Texas, focused on security & defense, healthcare, consumer, and enterprise software. Known for his direct, founder-first approach, Adam works closely with entrepreneurs as both investor and coach—valuing honesty, resilience, and operational excellence. His reputation for adding strategic value has been highlighted in publications like Forbes, reflecting his belief that the best investors help founders scale themselves, not just their companies. He’s also known for a uniquely human diligence process— connecting with references from all stages of the founder’s life—to understand the whole person and who they are at their core. Over the past decade, Adam has backed category leaders including Anduril, CrowdStrike, Reddit, Ring, ZenBusiness, Dragos, and Apptronik.

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