Enterprise sustainability software developer Thinkstep has been bought by risk management consultancy Sphera after raising more than $23m from investors including Siemens.

Germany-based enterprise sustainability services provider Thinkstep has been acquired by risk management services firm Sphera in a deal enabling industrial product manufacturer Siemens to exit.

The financial terms of the transaction were not disclosed, and the deal requires customary regulatory approvals to close.

Founded in 1991 and previously known as PE International, Thinkstep provides a software-as-a-service platform to enterprises looking to make their operations more environmentally sustainable.

Thinkstep’s software allows clients to conduct sustainability audits and forecast the environmental implications…