Quartermaster Raises $100M Series B Plus $40M Debt
Quartermaster's $140 million headline financing combines roughly $100 million of Series B equity led by Insight Partners with a $40 million debt facility.
TL;DR: Quartermaster's September 2026 financing totals $140 million, but the structure matters: reporting says approximately $100 million is Series B equity and $40 million is debt.
Canonical company profile: Quartermaster.
The financing structure
Insight Partners led the Series B. Existing investors including Overmatch Ventures and First Round Capital also participated, while the debt portion was reported separately.
That means the clean database representation is not "$140M Series B equity."
It is:
| Component | Amount |
|---|---|
| Series B equity | ~$100M |
| Debt facility | ~$40M |
| Total financing package | ~$140M |
What Quartermaster does
Quartermaster is building a distributed maritime intelligence network using SmartMast systems installed on commercial vessels.
The devices combine sensors, cameras and communications equipment to collect observations across commercial shipping routes.
Why investors care
Maritime awareness is strategically important but difficult to cover continuously across vast ocean areas. A network deployed on vessels already moving through those areas could provide a lower-cost observation layer than relying only on dedicated military or satellite assets.
The open question is whether Quartermaster can turn sensor deployment into a durable data advantage while managing hardware, maritime operations and customer concentration.
Funding cadence
The September financing followed a $43 million Series A announced only months earlier. That rapid cadence is useful context, but VCT keeps each financing as a separate event rather than adding them together as one round.
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Editorial note: AI tools assisted with research, structure, or drafting. Venture Capital Tracker retains human editorial responsibility for factual accuracy, relevance, and source quality before publication.
