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.

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.

Saybrook is an asset manager, not a family office. It invests its own capital alongside outside institutional money and has historically managed capital for pension funds, insurance companies, family offices, and high-net-worth individuals.

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.

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.