AltAssets daily private equity deal roundup – September 27, 2023

Thoma Bravo has agreed to sell business collaboration security specialist Exostar to fellow private equity house Arlington Capital Partners. Thoma Bravo bought Exostar three years ago. The company says it software platform allows companies to share sensitive information in a trusted environment and transact business securely, compliantly and efficiently across multi-tiered networks. L Catterton‘s early-stage beauty …