U.S. private equity firm TA Associates has closed its previously announced investment in Itasca, Illinois-based Flexera, a software supply chain company, according to a blog post on the latter’s site. No financial terms were disclosed.Ontario Teachers’ Pension Plan, which acquired a majority stake in Flexera from U.S. private equity firm Thoma Bravo in 2011, will be working in partnership with TA Associates to continue to grow Flexera.