# UBMB

UBMB is an Asset Manager based in Boston, United States.

## Overview

- **Organization type:** Asset Manager
- **Headquarters:** Boston, United States
- **Region:** North America
- **Address:** Boston, MA, United States
- **Founded:** 2004
- **Assets under management:** Undisclosed
- **LinkedIn:** https://www.linkedin.com/company/ubmb-llc

## Regulatory record

- **Reports private funds:** No

## About

UBMB is a US-based investment company headquartered in Boston. It focuses on a Venture Capital strategy.

## People

- Christopher S. Gaffney — Sole Manager

## Questions

### Who runs investment decisions at UBMB?

Christopher S. Gaffney serves as the sole manager of UBMB, LLC. He co-founded Great Hill Partners in 1998 and remains a Managing Partner there, leading investments in growth-stage companies across software, fintech, and digital commerce. Investment decisions at UBMB flow through Gaffney directly, without a separate investment committee or dedicated staff.

### How is UBMB related to Great Hill Partners?

UBMB is the personal investment company of Christopher Gaffney, who is also co-founder and Managing Partner of Great Hill Partners. UBMB is not a fund or affiliate of Great Hill; it is owned by the Gaffney family trust and operates independently. The connection is the shared leadership — Gaffney runs both entities — which creates overlap in sourcing and networks but no formal co-investment arrangement between the two.

### Does UBMB invest directly or only through funds?

UBMB invests directly in seed-stage technology startups, often alongside venture capital co-investors such as Glasswing Ventures. The firm does not publicly disclose whether it also commits capital to third-party venture funds, but its documented activity points to direct equity stakes in early-stage companies rather than acting as a fund-of-funds.

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Last updated: 2026-06-03T20:00:00.000Z

Canonical page: https://altss.com/profile/ubmb

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