# Oak Investment Partners

Oak Investment Partners is a Private Equity based in Wilton, United States.

## Overview

- **Organization type:** Private Equity
- **Headquarters:** Wilton, United States
- **Region:** North America
- **Address:** 195 Danbury Road, Building A, Suite 220, Wilton, CT 06897, United States
- **Founded:** 1978
- **Assets under management:** Undisclosed
- **Website:** www.oakvc.com
- **LinkedIn:** https://www.linkedin.com/company/oak-investment-partners
- **Wikidata:** Q7073601

## Regulatory record

- **Reports private funds:** No

## About

Oak Investment Partners is a multi-stage venture capital firm and a lead investor for the next generation of disruptive growth companies. It focuses on high-growth opportunities in Information Technology, Internet and Consumer, Financial Services Technology, Healthcare Information and Services, and Clean Energy. The firm helps dynamic companies transform the way business is done and invests across the venture capital spectrum from early- to later-stage.

## Sectors

- Enterprise Software
- FinTech
- Digital Health
- Clean Energy
- Media & Entertainment

## Offices

- Menlo Park, CA, United States

## People

- Bandel Carano — Managing Partner
- Ed Glassmeyer — Managing Partner
- Fred Harman — Managing Partner
- Ann Lamont — Managing Partner
- Andrew Adams — Partner
- Grace Ames — Partner
- Brian Dunefsky — Partner
- Allan Kwan — Partner
- Ren Riley — Partner
- Dana Tavella — Partner

## Questions

### Who runs investment decisions at Oak Investment Partners?

A group of four managing partners — Bandel Carano, Ed Glassmeyer, Fred Harman, and Ann Lamont — lead all investment decisions. The firm's 10-person investment team operates as a flat partnership without a formal CEO. Each managing partner has been with Oak for multiple decades, creating continuity in underwriting and portfolio-company engagement.

### What investment stages does Oak target?

Oak invests across the full company lifecycle — from seed and early-stage startups through growth equity and public-company PIPEs. The firm also executes spinouts of operating divisions and technology assets. This flexibility allows it to follow winning companies through multiple financing rounds.

### How does Oak source proprietary deal flow?

Oak's sourcing advantage comes from a four-decade affiliate network of roughly 250 senior executives who span industries and geographies. These operators surface opportunities through their own professional networks and commercial relationships. The firm also benefits from repeat founder partnerships, with portfolio CEOs like Kayak's Steve Hafner and Castlight Health's Gio Colella publicly endorsing Oak's long-term support.

### Does Oak participate in fund commitments or only direct deals?

Oak deploys capital through direct investments rather than acting as a fund-of-funds. The firm takes board seats and embeds its executive network into portfolio companies. There is no public record of Oak committing capital to other venture funds as a limited partner.

### Which sectors does Oak explicitly avoid?

Oak's published focus is on Information Technology, Internet and Consumer, Financial Services Technology, Healthcare Information and Services, and Clean Energy. The firm does not invest in sectors outside this remit, such as hard industrial manufacturing, defense, or resource extraction.

### Where is Oak Investment Partners headquartered and does it have other offices?

The firm is headquartered in Wilton, Connecticut, with an additional office in Menlo Park, California. While Oak has backed international portfolio companies, it does not publicly list investment offices outside the United States.

## Related profiles

- [Oakhouse Partners](https://altss.com/profile/oakhouse-partners)
- [Oakland Foundation](https://altss.com/profile/oakland-foundation)

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Last updated: 2026-08-11T15:07:41.444Z

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