FirstMark Capital is a New York City-based venture capital firm specializing in early-stage technology investments. Founded in 2008 by Rick Heitzmann and Amish Jani as a spinoff from Pequot Capital Management, the firm has raised 10 funds with a total of $3.5 billion in committed capital as of 2024. FirstMark invests primarily in Seed and Series A companies, focusing on sectors such as enterprise software, consumer marketplaces, infrastructure, AI/ML, healthcare, gaming, fintech, and e-commerce.

Notable investments include Pinterest, Shopify, DraftKings, StubHub, Airbnb, Upwork, Riot Games, and Frame.io. The firm is known for its strong presence in New York City and its network-driven approach, offering portfolio companies access to unique communities and resources.