Spero Therapeutics, Inc.https://pcaobus.org/form-ap-filings/54347/54347Spero Therapeutics, Inc.543474/4/2020 12:22:00 PM2019ba5ba0d0-0f45-4fb0-a985-b9681c8420e0238PricewaterhouseCoopers LLP689227Spero Therapeutics, Inc.1701108SPRO0023800854John Louis Charters Jr0023800854True
Vericel Corphttps://pcaobus.org/form-ap-filings/51359/51359Vericel Corp513593/12/2020 5:06:18 PM2019c1fee60f-7d77-4e81-8891-af2cb881c2a9238PricewaterhouseCoopers LLP46227Vericel Corp887359VCEL0023800854John Louis Charters Jr0023800854True