Square Robot, Inc., an industry expert in robotic inspection of industrial storage and energy infrastructure, has completed a Series B funding round and entered into a strategic collaboration with Marathon Petroleum Corporation. This integrated downstream and midstream energy company operates the most extensive refining system in the United States.
As part of the Series B funding round, Marathon Petroleum will participate alongside several other investors. The collaboration also includes technical engagement, with Marathon working alongside Square Robot to help shape the design and development of the company’s next-generation submersible robotic inspection platform.
Square Robot’s submersible robotic inspection systems support safer, non-invasive inspection of industrial storage and energy infrastructure.
In parallel, Marathon will continue deploying Square Robot’s existing fleet of submersible robots to conduct inspections across its nationwide network of terminals and refineries. The robotic systems are designed to perform internal inspections of above-ground storage tanks while keeping assets online, reducing operational disruption, and minimizing safety and environmental risks associated with traditional inspection methods.
“Marathon’s partnership marks a major milestone in our mission to transform industrial tank inspection,” said David Lamont, CEO of Square Robot. “They recognize the proven value of our robotic inspections—eliminating confined space entry, reducing the environmental impact, and delivering major cost efficiencies, all while keeping tanks online and working. We’re excited to work together with such a great company to expand inspection capabilities and accelerate innovation across the industry.”
Square Robot’s submersible robotic platforms are designed to support non-invasive inspection of above-ground storage tanks without draining the assets or requiring confined-space entry. The systems are deployed in energy, petrochemical, and industrial environments where inspection accuracy, safety, and asset availability are critical to operations.
About Square Robot:
Square Robot, Inc. is a U.S.-based robotics technology company specializing in submersible robotic inspection of above-ground storage tanks. The company develops and deploys robotic systems that keep tanks online while eliminating confined-space entry, reducing exposure to emissions, and improving inspection efficiency. Square Robot provides inspection services globally, supporting asset owners with high-fidelity inspection data and robotics-enabled inspection workflows. For more information, please click here.
About Marathon Petroleum Corporation:
Marathon Petroleum Corporation is a U.S.-based downstream and midstream energy company with operations spanning petroleum refining, logistics, and transportation. The company operates an integrated refining system in the United States and supports the movement, storage, and distribution of refined products through terminals, pipelines, and related infrastructure. To learn more, please visit marathonpetroleum.com.
Source/Photo Credit: Square Robot, Inc.
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Molly is the Founder, Publisher, and Editor-in-Chief of Components Source Network, the industry’s first and only known 100% woman- and disability-owned and led B2B publishing platform serving the global high-tech manufacturing and engineering sectors. Her portfolio includes Robotics Industry Monthly and ten additional specialized e-news sites. With more than 25 years of experience spanning strategic technical marketing, public relations, and business development in highly specialized technical markets, she also leads Embassy Global, LLC, a virtual consultancy that has supported the growth of more than 200 high-tech industry brands worldwide since 2008. In addition to her publishing and advisory work, Molly has been appointed to serve as Second Vice Chair of the Government Team for the Women’s Business Enterprise National Council (WBENC) Forum, beginning in 2026, supporting policy development and advocacy initiatives advancing women-owned businesses. A long-standing voice for small business, supplier diversity, and women in STEM, she was also a 2025 finalist for the WBEC Metro New York Outstanding Advocate Award. Connect with her on LinkedIn.
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