The Comcast Ventures and iRobot Ventures-backed warehouse robotics software developer has added $21m to its latest round.

Osaro, the US-based robotics software provider that counts mass media group Comcast and domestic cleaning robot producer iRobot as investors, closed its series B round at $37m yesterday.

Darco Capital and The Mark Cuban Companies joined King River Capital, Alpha Intelligence Capital, Founders Fund, Pegasus Tech Ventures and GiTV Fund as well as unnamed existing investors to add $21m to the $16m put up by the last five in October 2019.

Osaro has created machine learning software that helps robotic pickers identify, pick up and place objects with an extremely high accuracy rate. The extension comes after it launched a Japanese subsidiary and increased headcount by 20% during 2020.

AME Cloud Ventures, Peter Thiel and Scott Banister provided $3.3m in seed capital for the company in 2015 before unnamed investors added $10m in a April 2017 series A round.

Corporate venture capital vehicles iRobot Ventures and Comcast Ventures have been named by Osaro as investors, as have Acorn Pacific Ventures, Arab Angel Fund, Morado Ventures, Compound Ventures, Sean Parker, Adam Weissman, Darian Shirazi, Daniel Loeb, Nicholas Berggruen and Elad Gil.