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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
Deployments1
Open roles0
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
2025-12-15Marathon Petroleum Corp.petroleum refinery and terminal networkUSNot disclosedAnnouncement
CA

Funding history

Publicly announced rounds

Investors on recordCrosstown Capital LPMarathon Petroleum Corp.
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 · retrieved 2026-07-05
09
Square Robots SR1 and SR3Technology Catalogue · retrieved 2026-07-05
10
Square Robot SR-3 and Side Launcher C1D2 and C1D1 Certified and FM ApprovedRobotics Tomorrow · retrieved 2026-07-05
11
Square Robot secures certification for high temperature inspection robotRobotics and Automation News · retrieved 2026-07-05
12
Square Robot, Inc. Announces New Funding and CollaborationSquare Robot · retrieved 2026-07-05
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