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ThayerMahan

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Provider of marine robotic solutions for government and industry

Groton, United StatesFounded 2016Defence
Valuation $100–250M Last recorded · 2024
Revenue $10–50M Latest reported FY
Headcount 100–500 Current team size
Total funding $50–100M Disclosed equity funding
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About ThayerMahan

ThayerMahan is a pioneering company in the field of autonomous maritime surveillance, leveraging cutting-edge technology to collect acoustic and electronic data from the world's oceans. The company serves a diverse range of clients, including government agencies, environmental organizations, and private enterprises, who require advanced oceanic monitoring solutions. Operating in the maritime security and surveillance market, ThayerMahan designs, manufactures, and operates sophisticated systems that provide enhanced coverage and situational awareness at a fraction of the cost of traditional methods. The business model revolves around the sale and operation of these systems, generating revenue through both direct sales and service contracts. ThayerMahan's innovative approach is driven by advancements in robotic miniaturization, digital communications, and artificial intelligence, positioning it as a leader in the industry.

Source: Dealroom company data

At a glance

Status
Operational
Founded
2016
Headquarters
Groton, United States
Employees
127
Open positions
5
Dealroom signal
28.9/100
Sector
Defence, Acoustics, Core AI, Industrial Robotics, Defence Applications, Industrial Technology, Sea and Subsea Robots, Blue Economy, Dual-Use Tech, Bluetech and Ocean Observation, AI Applications, NIF defense security and resilience, NIF awareness and decision making, DT and LS
Business model
SaaS

Funding history

5 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
SERIES COther financing Jan 2024 $20M $150M The Chertoff Group · Yellow Submarine · Hanwha Asset Management · AE Industrial Partners ↗
SERIES COther financing Apr 2023 $30M $120M AE Industrial Partners · I Squared Capital · Mercury Capital Advisors · Hegemon Capital ↗
Showing the latest 2 of 5 recorded eventsBook a demo for the full funding history →

Financials

Revenue over time

Revenue, earnings and other financial measures where available. Years marked “E” are estimates.

YearRevenueGrowth
2026
2025
2024
2023
2022
2021
2020 —
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Growth signals

ThayerMahan website traffic

Latest recorded traffic for ThayerMahan is 5.3K monthly website visits, down 32.9% over the last three months. ThayerMahan's team declined 15.3% over the past year.

Latest monthly visits5.3K 3-month web change-32.9% 1-year team growth-15.3%
Summary metrics are public; monthly history is available with a demoCompare with peers →

Similar companies

Closest operating peers by Dealroom taxonomy

Company identity and context are open; selected comparison metrics preview what is available on the platform.

Showing 8 of the closest matchesCompare every metric →

Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

11 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed2 investors entered at this stage

  • NYSERDA
  • National Offshore Wind Research & Development Consortium

Series A1 investor entered at this stage

  • AE Industrial Partners

Series B and later8 investors entered at this stage

  • I Squared Capital
  • Mercury Capital Advisors
  • Hegemon Capital
  • RiverPark Ventures
  • Ducenta Squared Asset Management
  • Hanwha Asset Management
  • The Chertoff Group
  • Yellow Submarine
Team profiled 3 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 1 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
2 countries with
team presence
🇺🇸 United States98.3%
🇬🇧 United Kingdom0.8%
2 countries shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about ThayerMahan on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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