Quartermaster provides ocean surveillance solutions and technology.
quartermaster.usLinkedInArlington, VirginiaData and analytics
30 sources
The article separately reports a $40 million venture debt facility from Stifel Bank, which is excluded from the round amount. It also recalls Quartermaster AI’s earlier $43 million Series A.
7 sources
The source provides only a headline and no round stage, investors, valuation, headquarters, or original announcement date. Its publication date is not used because it is a republished article.
Publication audit: leads should be First Round Capital, Quiet Capital (https://www.quartermaster.us/blog/the-largest-blind-spot-on-earth)
Published by hand (quartermaster.us): "Today we're announcing that Quartermaster has raised $43M in Series A funding, co-led by First Round Capital and Quiet Capital, with participation from TMV Logistics, Steel Atlas, BoxGroup, Operator Partners, Shorewind Capital, and David Adelman.": brand backfill: the cited page states the round's $43 million
| Round | Amount | Announced | Lead | Buzz |
|---|---|---|---|---|
| Series B | $100M $140M to date | 2026-09-28 | Insight Partners | No recent discussion |
30 sources [ VERIFIED · CORRECTED ] read against 1 of 30 sources
The article separately reports a $40 million venture debt facility from Stifel Bank, which is excluded from the round amount. It also recalls Quartermaster AI’s earlier $43 million Series A. | ||||
Quartermaster builds SmartMast, a network of vessel-mounted sensors and AI that gives maritime, commercial, and government operators real-time visibility into ocean activity.
Quartermaster is addressing sparse, delayed, fragmented, and spoofable maritime data by turning existing commercial fleets into a persistent sensing network; the latest report says more than 650 vessels in 25 countries use SmartMast and that more than 800 units have shipped to customers. Its current $140 million Series B, including about $100 million of equity led by Insight Partners and Overmatch Ventures and a $40 million Stifel debt facility, follows the $43 million Series A and funds a bet that distributed vessel-based intelligence can become core infrastructure for shipping, government, and insurance.
Checked against 10 sources on Sep 28
| Series A [ HISTORY ]: An earlier round, from the company's own announcement, found while researching the company. Checked like any round, but not new, so it stays out of the daily feed and alerts; a date range shows it. | $43M | 2026-05-20 | not stated | No recent discussion |
7 sources [ VERIFIED ] read against 1 of 7 sources The source provides only a headline and no round stage, investors, valuation, headquarters, or original announcement date. Its publication date is not used because it is a republished article. Publication audit: leads should be First Round Capital, Quiet Capital (https://www.quartermaster.us/blog/the-largest-blind-spot-on-earth) Published by hand (quartermaster.us): "Today we're announcing that Quartermaster has raised $43M in Series A funding, co-led by First Round Capital and Quiet Capital, with participation from TMV Logistics, Steel Atlas, BoxGroup, Operator Partners, Shorewind Capital, and David Adelman.": brand backfill: the cited page states the round's $43 million [ BUILT WITH ]·[ SEARCH ]found by Firecrawl search·[ SCRAPE ]7 pages read: quartermaster.us, bizjournals.com, alpha-maven.com·[ JSON ]round read into a schema, with the sentence that states it·[ VERIFY ]confirmedchecked against 1 of 7 sources·[ BRANDING ]logo and colour from the homepage·[ AGENT ]company research by the Firecrawl agent | ||||