Flexstone Partners

General contacts

Investor type

Fund of funds / PE / Debt fund

Founded

2005

AUM

$12 400 M

Location

Geneva, New York, United States

Investment Ticket

$10-50 m

Investment Stage

Series B Late Stage (Series C+)

Region of investment

Europe North America Asia

ESG Focus

Impact investor

Investor profile last updated: 16 August, 2026

Profile

Flexstone Partners is a private equity investor operating globally with headquarters in New York, Paris, Geneva, and Singapore. Established as an affiliate of Natixis Investment Managers, the firm boasts a team of over 65 professionals specializing in private markets. With access to Natixis' extensive network and resources, Flexstone is distinguished by its customized service, focusing on the small- and mid-cap market, combined with a commitment to responsible investing principles.

Flexstone Partners invests in sectors including private equity, real estate, private debt, and infrastructure. They are known for crafting diverse solutions that fit individual client needs and have amassed over $12.4 billion in assets under management and advisory. The firm's strategic focus is on North America, Europe, and Asia, with an emphasis on ESG-minded investments.

Notable portfolio companies include over 4,000 businesses through 550 funds, with approximately 600 investment opportunities assessed globally each year. Flexstone Partners is devoted to delivering exceptional investment performance and a high level of personalized client service across all its ventures.

Industry

HealthTech Infrastructure Transportation Robotics Real Estate Healthcare Services Foodtech Food and Beverage Financial Services Business Services (B2B) Biotechnology Consumer Products Consumer Services (B2C) Energy CleanTech Logistics

Flexstone Partners Funds

Name	Type	Industry	Stage	Region	Size	AUM	Launch date
Select Opportunities II	Private Equity (PE)	Biotechnology Business Services (B2B) Consumer Products Consumer Services (B2C) Healthcare Services Energy CleanTech Logistics	Series B Late Stage (Series C+)	North America Europe	$5-10 m	$350 M	July 2019
Mid-Market Secondaries III	Private Equity (PE)	Biotechnology Healthcare Services Energy CleanTech Logistics	Series B Late Stage (Series C+)	North America	$5-10 m	$230 M	January 2025

Contacts

Name

Title

Social Networks

Eric Deram Managing Partner

Managing Partner

e•••@•••

Sam Wang Vice President

Vice President

s•••@•••

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[email protected]

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[email protected]

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[email protected]

Investment-team contacts for Flexstone Partners — including verified work emails and LinkedIn profiles — are available to Private Equity List subscribers.
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Contacts sourced from the firm's website and LinkedIn, re-verified on a rolling cycle. Spot a stale contact, or none at all? Report it — we re-run that firm within 48h and get back to you.

FAQs about Flexstone Partners

Is Flexstone Partners a venture capital or private equity firm?

Flexstone Partners is a private equity firm that also operates as a fund of funds and debt fund. It backs companies at Series B and Late Stage (Series C+), writing tickets of $10-50 m.

Where is Flexstone Partners located?

Flexstone Partners is located in Geneva, New York, United States.

When was Flexstone Partners founded?

Flexstone Partners was founded in 2005.

What sectors and industries does Flexstone Partners invest in?

Flexstone Partners invests in companies and startups in HealthTech, Infrastructure, Transportation, Robotics, Real Estate, Healthcare Services, Foodtech, Food and Beverage, Financial Services, Business Services (B2B), Biotechnology, Consumer Products, Consumer Services (B2C), Energy, CleanTech, Logistics.

What is Flexstone Partners geographical focus of investments?

Flexstone Partners invests in companies and startups in Europe, North America, Asia.

At what stages of companies and startups does Flexstone Partners typically invest in?

Flexstone Partners invests in companies and startups at Series B, Late Stage (Series C+).

What is the usual amount of Flexstone Partners investment?

Flexstone Partners usually invests $10-50 m on average.

What is the amount of assets of under management (AUM) for Flexstone Partners?

Flexstone Partners has around $12 400m assets under management.

When was Flexstone Partners last fund created?

Flexstone Partners last fund was created/launched in 2025-01-08

Is Flexstone Partners impact investor?

Yes, Flexstone Partners is impact investor.

What are the contacts of Flexstone Partners?

Flexstone Partners can be reached through its website flexstonepartners.com and its LinkedIn page. Its general enquiries address is [email protected]. Cold-mailing a general inbox rarely reaches a partner, so Private Equity List also lists the investment-team contacts for Flexstone Partners — names, roles, verified work emails and LinkedIn profiles — available on a Pro plan from $129/month (see pricing). Contacts are sourced from the firm's website and LinkedIn and re-verified on a rolling cycle. Spot a stale contact, or none at all? Report it — we re-run that firm within 48h and get back to you.

Can I access Flexstone Partners data via API or MCP?

Yes. Every field on this page — profile, funds, investment criteria, portfolio and investment-team contacts — is available programmatically through the Private Equity List REST API and MCP server, so AI assistants such as Claude and ChatGPT can query Flexstone Partners directly instead of scraping this page. One subscription covers both the web app and machine access — see API & MCP.

When was the Flexstone Partners profile last updated?

Private Equity List re-verifies investor profiles on a rolling cycle, pulling from the firm's own website and LinkedIn rather than a one-off import. This profile was last updated on 16 August, 2026. Something out of date here? Report it — we re-run that firm within 48h and get back to you.