• Sequence raises $20m to build a CFO revenue platform amid B2B fintech boom
  • Arbor Raises $6.3M in Seed and Pre-Seed Funding
  • Forterra Closes $238M Series C
  • Risotto raises $10M seed to use AI to make ticketing systems easier to use
  • How startups can lure good talent fairly without big tech bank accounts 
  • Forterra Closes $238M Series C
  • Clerq Raises $21M, Including $12M Series A Led by 645 Ventures
  • Clerq raises $21M, closes $12M Series A led by 645 Ventures
  • Arbor Raises $6.3M in Seed Funding
  • Forterra Secures $238M Series C Funding
  • Strella Raises $14M Series A Led by Bessemer Venture Partners
  • Strella raises $14M Series A led by Bessemer Venture Partners
  • Uptiq Secures $25M Series B Funding to Deploy AI Agents in Bank Workflows
  • Sequence Secures $20M Series A to Accelerate AI‑Powered Revenue Platform
  • Forterra Secures $238M Series C Funding Led by Moore Strategic Ventures
  • Strella raises $14M Series A led by Bessemer to scale AI-powered customer research
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645 Ventures

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About 645 Ventures

645 Ventures (www.645ventures.com) is a Seed to Series A venture capital fund that applies a data-intensive investment approach, utilizing proprietary software and deep due diligence to invest in rapidly-growing software and Internet companies. The fund invests in established market sectors such as vertical SaaS, infrastructure software, financial software, and online marketplaces, as well as nascent but fast-growing markets such as virtual reality and IOT. The firm's general partners built their careers at firms such as Insight Venture Partners, DFJ-Gotham Ventures, and Goldman Sachs.

Recent News

Sequence Raises $20m to Build a CFO Revenue Platform Amid B2B Fintech Boom

Arbor Raises $6.3M in Seed and Pre-Seed Funding

Forterra Closes $238M Series C

Risotto Raises $10M Seed to Use AI to Make Ticketing Systems Easier to Use

How Startups Can Lure Good Talent Fairly without Big Tech Bank Accounts 

Forterra Closes $238M Series C

Recent Deals

Clerq Raises $21M, Including $12M Series A Led by 645 Ventures

October 27, 2025

Clerq Raises $21M, Closes $12M Series A Led by 645 Ventures

October 23, 2025

Arbor Raises $6.3M in Seed Funding

February 3, 2026

Forterra Secures $238M Series C Funding

November 17, 2025

Strella Raises $14M Series A Led by Bessemer Venture Partners

October 16, 2025

Strella Raises $14M Series A Led by Bessemer Venture Partners

October 16, 2025

Uptiq Secures $25M Series B Funding to Deploy AI Agents in Bank Workflows

February 13, 2026

Sequence Secures $20M Series A to Accelerate AI‑Powered Revenue Platform

December 17, 2025

Forterra Secures $238M Series C Funding Led by Moore Strategic Ventures

November 17, 2025

Strella Raises $14M Series A Led by Bessemer to Scale AI-Powered Customer Research

October 16, 2025

Key Facts

HQ Location

New York, United States

Founded

2013

Employees

10-50

Status

Investor

Investor Type

Venture Investor

Website

https://645ventures.com