Atlas Venture Associates XI, LLC

• 10% owner at Korro Bio, Inc. · on record since Nov 7, 2023
• 10% owner at Sionna Therapeutics, Inc. · on record since Feb 10, 2025
• 10% owner at Day One Biopharmaceuticals, Inc. · on record since Jun 2, 2021
• 10% owner at Akero Therapeutics, Inc. · on record since Jun 25, 2019
• 10% owner at DYNEGY INC /IL/ · on record since Sep 23, 2020
• 10% owner at INVERNESS MEDICAL INNOVATIONS INC · on record since Mar 25, 2021
• 10% owner at Xilio Therapeutics, Inc. · on record since Oct 21, 2021
• 10% owner at TF FINANCIAL CORP · on record since Sep 19, 2022