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Robot maker · registered

Square Robot

Corporate marketinspectionCurated record
squarerobot.com

Submersible autonomous robots for in-service aboveground storage tank inspection; SR-1 onboard autonomy engine integrates guidance plans, navigation data, and dynamic controls for untethered Phased Array Ultrasonic Testing (PAUT) scanning; SR-3 extends capability to fixed, external, and internal floating-roof tanks; AI-enabled data analytics and reporting tools in active development.

HeadquartersWestborough, US
Founded2016
Corporate funding$48M
Team51-200
Deployments2
Open roles4
01

Company overview

Identity and operating footprint

Company typeRobot maker
Market segmentCorporate
StageSeries B
FoundersJerome Vaganay (Founder & CTO), Eric Levitt (Co-Founder), William O'Halloran (Co-Founder)
Regions servedNorth America, Europe, Middle East, Asia Pacific, Latin America
Countries deployedUS, GB, FR, BE
Service footprintAutonomous submersible inspection robots for in-service aboveground storage tanks; SR-1, SR-3, and SR-3HT eliminate confined-space entry; 400+ tanks inspected in 17 countries across oil, gas, chemical, aviation, and power sectors; HQ Westborough MA (engin
Last reviewed2026-07-05
MX

Robot models

Specifications remain vendor-claimed

Machineinspection

SR-1

  • Fully autonomous untethered tank inspection eliminating confined-space entry

    vendor-stated autonomous operation mode for SR-1 platform

    Claim source
  • 18,000 A-Scans per sq ft PAUT coverage

    vendor-stated phased array ultrasonic testing scan density for corrosion detection

    Claim source
  • 99.6% defect detection confidence

    vendor-stated PAUT defect detection confidence rate

    Claim source
Machineinspection

SR-3

  • Compatible with fixed, external floating-roof, and internal floating-roof tanks

    vendor-stated tank-type compatibility for SR-3 platform

    Claim source
  • Compatible with low- and high-flashpoint products

    vendor-stated operating environment for SR-3

    Claim source
  • FM Approvals C1D2 and C1D1 certified (with Side Launcher); seventh certified model family from Square Robot

    vendor-stated hazardous-location certifications issued January 2025

    Claim source
Machineinspection

SR-3HT

  • Operates in product storage temperatures -10°C to 55°C (14°F to 131°F); active and passive cooling technology

    vendor-stated expanded temperature operating range vs SR-3 standard (0–40°C); targets Middle East and hot-climate tank operators

    Claim source
  • NEC/CEC Class I Division 2 (C1D2) certified by FM Approvals

    vendor-stated hazardous-location certification for SR-3HT; confirmed September 2025

    Claim source
DP

Deployment log

Announced and cited only

AnnouncedCustomerSiteCountryCountEvidence
2026-08-30Tristar Group (Tristar Guam fuel terminal)fuel storage tank inspectionGUNot disclosedAnnouncement
2025-12-15Marathon Petroleum Corp.petroleum refinery and terminal networkUSNot disclosedAnnouncement
CA

Funding history

Publicly announced rounds

Investors on recordCrosstown Capital LPMarathon Petroleum Corp.
HR

Hiring signal

Public job board · 2026-07-11

Open roles4

Hiring is an operating signal, not deployment evidence. Roles are refreshed from the company’s public careers system.

Business Development ManagerTeam unlisted · Location unlistedExpert Inspection Services Powered by the SR-3Team unlisted · Location unlistedLeadership TeamTeam unlisted · Location unlistedRobotic Field EngineerTeam unlisted · Location unlisted
TL

Company timeline

Milestones and announcements

2025-12-15Raised $7.5M Series B extension with Marathon Petroleum collaboration; 300th tank inspection milestone reached in 2025Robotics and Automation News
2025-09-08SR-3HT certified FM Approvals C1D2; operating range -10°C–55°C; designed for Middle East and high-temperature markets; 7th certified Square Robot variantRobotics and Automation News
2025-06-30Strategic partnership with Sutro Group (UK) for SR-3 robotic tank inspection across the United KingdomSquare Robot
2025-03-12Distribution and service agreement with Institut de Soudure Industrie for robotic tank inspection in France and BelgiumSquare Robot
2025-01-29SR-3 and Side Launcher receive FM Approvals C1D2 and C1D1 certification for hazardous locationsRobotics Tomorrow
2024-11-01Series B closed at $13.5M total; established permanent EU and Middle East presenceTank Storage
2023-10-01Raised $5M Series B first close led by Crosstown Capital LP; fleet expanded from 7 to 11 robotsThe Robot Report
SC

Source ledger

16 unique public sources

01
Robotic Tank Inspection ServicesSquare Robot · retrieved 2026-07-05
02
Square Robot raises new Series B funding and agrees collaboration with Marathon Petroleum ($7.5M extension per wbjournal.com; amount not stated in this article)Robotics and Automation News · retrieved 2026-07-05
03
SEC Form D: $12,998,767 sold of $12,998,767 offeringSEC EDGAR · retrieved 2026-07-05
04
Square Robot Secures $5M Growth Investment from Crosstown Capital LP (first close Oct 9 2023; full Series B closed November 2024 at $13.5M total per wbjournal.com; signalbase reports $13M)Square Robot · retrieved 2026-07-05
05
SEC Form D: $1,446,788 sold of $3,000,000 offeringSEC EDGAR · retrieved 2026-07-05
06
SEC Form D: $9,078,726 sold of $10,000,008 offeringSEC EDGAR · retrieved 2026-07-05
07
SEC Form D: $3,000,000 sold of $3,000,000 offeringSEC EDGAR · retrieved 2026-07-05
08
Square Robots brings in $5M for tank inspection robotsThe Robot Report
09
Square Robots SR1 and SR3Technology Catalogue
10
Square Robot SR-3 and Side Launcher C1D2 and C1D1 Certified and FM ApprovedRobotics Tomorrow
11
Square Robot secures certification for high temperature inspection robotRobotics and Automation News
12
Gecko Robotics, Square Robot transform fuel tank inspections in GuamRobotics 24/7 · retrieved 2026-10-13
13
Square Robot, Inc. Announces New Funding and CollaborationSquare Robot · retrieved 2026-07-05
14
Robotic Tank Inspections UK: Square Robot & Sutro GroupSquare Robot · retrieved 2026-07-05
15
Square Robot and Institut de Soudure Industrie Announce AgreementSquare Robot · retrieved 2026-07-05
16
Square Robot Closes Series B FundingTank Storage · retrieved 2026-07-05