# Saybrook Capital

Saybrook Capital is a Private Equity based in Sag Harbor, United States.

## Overview

- **Organization type:** Private Equity
- **Headquarters:** Sag Harbor, United States
- **Region:** North America
- **Address:** Los Angeles, CA, United States
- **Founded:** 1990
- **Assets under management:** Undisclosed
- **Website:** saybrookfunds.com
- **LinkedIn:** https://www.linkedin.com/company/saybrook-capital

## Regulatory record

- **CRD number:** 107679
- **SEC file number:** 801-35487
- **Registration status:** Registered
- **Reports private funds:** No
- **IAPD record:** https://adviserinfo.sec.gov/firm/summary/107679

## About

Saybrook private equity funds invest in lower middle market companies with operational or capital structure complexity that causes many investors to push away. The firm also focuses on infrastructure and technology investments related to supply chain, and provides consulting services including turnaround, capital structure analysis, and strategic planning. Its approach emphasizes finding the right management team and establishing downside protection of a debt investment while creating potential for equity-type returns.

## Sectors

- Real Estate
- Infrastructure
- Enterprise Software
- Supply Chain Tech

## People

- Jonathan Rosenthal — Portfolio Manager, CEO
- Dan Pimentel — Partner, CFO, CCO

## Questions

### Who makes investment decisions at Saybrook Capital?

Jonathan Rosenthal is Portfolio Manager and CEO, and he has been with Saybrook since shortly after its 1990 founding. He led the Restructuring Advisory Group from 1991 to 2006 and oversees the firm’s private equity, infrastructure, and technology strategies. No separate CIO or investment committee is named in public materials.

### How does Saybrook source its deals?

Saybrook’s pipeline grows out of its restructuring advisory practice — the firm built relationships with creditors, bankruptcy courts, and distressed operating companies through mandates like the lead financial-advisor role to the Official Committee of Creditors in the United Airlines reorganization. Today it looks for complexity that keeps other capital away, particularly in supply chain and logistics.

### What does Saybrook's infrastructure practice actually own?

The infrastructure group focuses on real assets that enhance goods movement. A flagship project is the Harbor Performance Enhancement Center, a $130 million container staging facility at the Port of Los Angeles designed to boost productivity and reduce congestion. The firm also has interests in trucking and logistics facilities through portfolio companies like Total Transportation Services.

### How is the advisory business kept separate from the investment funds?

Saybrook runs a standalone consulting arm that offers turnaround, capital-structure, and ERP-implementation services to clients. The firm’s website presents the advisory practice as a distinct service line, separate from the private equity, infrastructure, and technology funds.

## Related profiles

- [Sayani Investments](https://altss.com/profile/sayani-investments)
- [Saybrook Fund Advisors](https://altss.com/profile/saybrook-fund-advisors-llc)

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Last updated: 2026-08-11T15:08:04.536Z

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