FirstMark

firstmark.com ↗Activity from announced rounds

All recorded activity

An early-stage venture capital firm in New York, with recorded activity across enterprise software, infrastructure and fintech.

Investment focus

FirstMark is a New York-based early-stage venture capital firm. Its official portfolio covers areas including enterprise software, data infrastructure, fintech, healthcare and consumer technology. The firm also builds networks connecting founders with operators and the wider technology community.

Activity recorded on RoundOS

RoundOS records include Liquid Compute, Rillet, Onyx Security, Tracebit and SurrealDB. The published announcements show participation in compute-market infrastructure, accounting software, security and databases. This is a selection of recorded financings, rather than a complete account of FirstMark’s investments.

Sources
Rounds participated in
11
Confirmed lead rounds
4
6 roles undisclosed
New companies
11
First participation on record · 0 follow-on
Funding in participating rounds
$700M
11 disclosed · full round size, not this investor’s share

By stage

Series A6
Series B2
Series C+2
Seed1

By primary sector

Fintech5
AI2
Cybersecurity2
Developer tools1
Healthtech1

By country

United States9
United Kingdom2

Rounds

11 in all activity
Daytona

Provides infrastructure for AI agents with programmatic composable computers

$60MSeries B
Lead
Baba

Coordinates healthcare for Medicare members through dedicated advocates and licensed therapists supported by specialized AI.

$40MSeries A
Lead
Fragment

Ledger, payment and reconciliation infrastructure for software and AI agents.

$12MSeries A
Lead
Liquid Compute

Liquid Compute is building a market for GPU capacity that connects AI compute buyers, data centers, neoclouds and traders through a physical order book, standardized verification, clearing and settlement; it is onboarding participants while its planned derivatives exchange remains pending CFTC designation and registration.

$15MSeed
Lead
Rillet

Rillet provides accounting software in which finance teams and AI agents work from a shared general ledger.

$100MSeries C
Participant
Onyx Security

Secure AI control plane for the enterprise.

$113MSeries B
Role not disclosed
Velocity

Velocity provides stablecoin settlement and treasury infrastructure for businesses and financial institutions.

$38MSeries A
Role not disclosed
Tracebit

Deploys deception canaries across cloud environments to detect cyber intrusions for enterprises

$20MSeries A
Role not disclosed
SurrealDB

Cloud-native multi-model database for real-time and AI-native applications

$23MSeries A
Role not disclosed
Turnstile

Automates quote-to-cash for sales-led companies with AI

$29MSeries A
Role not disclosed
Rain

Provides enterprise-grade infrastructure for stablecoin-powered payments

$250MSeries C
Role not disclosed