Funding
Series B equity + debt facility · Defense tech

Quartermaster closes $140m equity-and-debt package

SmartMast sensors give fleets real-time data beyond standard vessel-tracking signals.

Updated Oct 16, 2026By RoundOS Funding desk

Overmatch Ventures and existing investors including First Round Capital participated in the Series B equity financing.

Quartermaster reports more than 650 equipped vessels across 25 countries and over 800 SmartMast units shipped. It is preparing entire-fleet deployments from that installed base.

The $140m headline combines equity and debt; Stifel’s facility is distinct from the venture-investor participation.

Funding history

Series B equity + debt facility · This round$140M
Series A$43M

Sources

  1. Maritime intelligence startup Quartermaster raises another $140Mtechcrunch.com · Sep 28, 2026

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