Stillmark

Stillmark is an early-stage venture capital firm founded in 2019 that invests in, advocates for, and supports founders building products and technologies that advance a bitcoin-powered future. The firm is investing from its second fund, Stillmark Fund II. Initial investment commitments typically range from $250,000 to $3,000,000, adjusted to suit a company's financing.

The investment thesis centres on sectors where Bitcoin technology, or Bitcoin as a digital bearer asset, creates new opportunities. These span the Bitcoin ecosystem, fintech and digital assets, and early-stage technology startups more broadly. Portfolio support pairs capital with insight, advocacy, and network access; the firm may work alongside portfolio teams to accelerate growth or address specific challenges, and describes its approach as grounded in long-term partnerships with founders.

The firm's work is informed by research on the Bitcoin ecosystem, and its team combines specialist Bitcoin technology knowledge with traditional venture capital experience, alongside connections across the Bitcoin community. Stillmark is led by founder and managing partner Alyse Killeen.