Quartermaster

Quartermaster announced $140M in Series B and Venture Debt financing on September 28, 2026. Quartermaster raised $140 million, a $100 million Series B led by Insight Partners plus a $40 million Stifel venture debt facility, to build an ocean data network.

Round details

The financing includes backing from Insight Partners, Overmatch Ventures, Stifel, First Round Capital, Quiet Capital, Steel Atlas, TMV. The company did not publish a valuation with the announcement.

• Round: Series B and Venture Debt
• Capital announced: $140M
• Headquarters: Arlington, VA

How the company plans to use the capital

Quartermaster said it will use the new financing to grow engineering headcount and to recruit new vessels to the network, increasing coverage across the world’s most active fishing grounds and commercial shipping lanes.

Why this matters for GTM teams

The announcement describes a distributed data network for the ocean fed by SmartMast sensors, and says new vessels will be recruited to extend coverage across the world’s most active fishing grounds and commercial shipping lanes.

Fresh capital is often an operational signal rather than a buying signal by itself. Teams should validate the company’s hiring pattern, product launches, geographic expansion, and technology priorities before choosing the message and timing of outreach.

Source and methodology

This report is based on the company’s announcement and records the disclosed amount, round, investors, location, and stated use of funds. SalesTools Research does not estimate undisclosed valuation or revenue figures.

Primary source: Quartermaster Series B announcement.