Hayley Siemering

Hayley Siemering, CPA, is a seasoned accounting professional with extensive experience in SEC reporting and assurance services. Currently serving as Senior Manager of SEC Reporting at Collegium Pharmaceutical, Inc., since November 2021, Hayley has progressed through roles including Accounting Manager and Senior Accountant. Prior experience includes working as a Commercial Assurance Senior and Associate at EY, where a diverse range of accounting functions were performed and digital audit tools were mastered. Early internships featured roles in assurance services and financial advising, along with event management and banquet service, showcasing versatility and collaborative skills. Hayley holds a Bachelor’s Degree in Business Administration and Management with a concentration in Accounting from the University of New Hampshire Peter T. Paul College of Business and Economics, attained in 2018.