Mobilize is owned by Apex Partners.

“The claim is inaccurate regarding the name of the private equity firm. In November 2020, Mobilize was acquired by EveryAction. Subsequently, in 2021, the private equity firm Apax Partners (not Apex Partners) acquired EveryAction and its subsidiaries, including Mobilize. In 2022, Apax Partners consolidated these acquisitions under a new parent company named Bonterra. Therefore, Mobilize is ultimately owned by Apax Partners through its portfolio company, Bonterra. Context: The claim correctly identifies that a private equity firm owns Mobilize, but it misstates the firm's name. The correct name is Apax Partners, a British private equity firm.”