# Quartermaster AI funding rounds and investors

As of 13 Nov 2026, Quartermaster AI has raised $143M across 2 verified rounds on record; latest: $100 million Series B led by Insight Partners, announced 28 Sep 2026.

Quartermaster provides ocean surveillance solutions and technology.

Website: https://portal.quartermaster.us  
Headquarters: Arlington, Virginia  
Page: https://fireround.dev/companies/quartermaster

## Verified rounds

| Announced | Round | Amount | Lead investors | Other investors | Sources |
| --- | --- | --- | --- | --- | --- |
| 2026-09-28 | Series B | $100 million | Insight Partners | BoxGroup, First Round Capital, Operator Partners, Overmatch, Quiet Capital, Steel Atlas, TMV | [quartermaster.us](https://www.quartermaster.us/blog/the-price-of-not-knowing), [techcrunch.com](https://techcrunch.com/2026/09/28/maritime-intelligence-startup-quartermaster-raises-another-140m), [techcrunch.com](https://techcrunch.com/2026/09/28/ocean-surveillance-startup-quartermaster-raises-another-140m) |
| 2026-05-20 | Series A | $43 million | not stated | none named | [quartermaster.us](https://www.quartermaster.us/blog/the-largest-blind-spot-on-earth), [bizjournals.com](https://www.bizjournals.com/washington/news/2026/05/21/quartermaster-ai-ship-tracking-funding.html), [alpha-maven.com](https://alpha-maven.com/story/venture-capital/arlingtons-quartermaster-ai-raises-43-million-to-scale-ship-tracking-sensors-and-software-the-business-journals) |

Source: Fireround (https://fireround.dev), an open-source funding feed. Each round is checked against the pages listed with it.