FirstMark

Overview

FirstMark is an early-stage venture capital firm in New York City[1] that backs enterprise, consumer and frontier tech founders[2]. Founded in 2008[8], the firm provides support services to startup founders including access to networks, customers and top talent through expert communities, customer introductions, exclusive summits and full lifecycle recruiting[7]. FirstMark's team includes 25 people, with Rick Heitzmann and Amish Jani serving as Founder & Partner[9]. The firm's portfolio companies include Pinterest, Shopify, Discord, DraftKings, Vercel, ClickHouse, Dataiku, Synthesia, Ro, Function Health, Legora and Harmattan AI[10]. In July 2026, FirstMark participated in New York AI funding rounds, including Henry AI's $16.5 million seed round and Overtone's $18 million round[3].

States 'FirstMark is an early-stage venture capital firm in New York City' [2]

The company's own site places it in New York: Text explicitly states 'FirstMark is an early-stage venture capital firm in New York City' multiple times throughout the page.. [6]

FirstMark says it planted its roots in New York in 2008. [8]

FirstMark describes itself as an early-stage venture capital firm in New York City. [11]

Business address: 641 6th Avenue, New York, New York, 10011. [12]

Growth & traction

FirstMark's team page lists 25 people, including Rick Heitzmann and Amish Jani as Founder & Partner. [9]

FirstMark's homepage names portfolio companies including Pinterest, Shopify, Discord, DraftKings, Vercel, ClickHouse, Dataiku, Synthesia, Ro, Function Health, Legora and Harmattan AI. [10]