Derek has practiced public accounting since 1991. He’s a senior assurance and advisory services partner serving companies ranging from emerging growth to publicly traded global entities in the semiconductor, software, internet, computer devices, networking systems, biotechnology, and medical devices sectors. He was a founding partner of the firm’s Technology and Life Sciences Practices (including starting the Northern California practices and opening the firm’s Silicon Valley office), Transactions Consulting Practice, and Private Equity (PE) Practice. He’s served in several leadership roles at Moss Adams, including Silicon Valley partner in charge; and as the regional leader for the Technology Practice, Life Sciences Practice, Assurance Services, and Public Company & SEC Services. Currently, he oversees the firm’s Public Company & SEC Services team in Northern California and serves as the coordinating partner for publicly traded and PE-owned companies in the technology and life sciences industries. He’s served many of the firm’s largest technology clients, with revenues and market capitalizations exceeding $1 billion, to meet their global needs. His transactions experience includes public offerings of securities and acquisitions in excess of $10 billion in aggregate value.

Professional Affiliations

  • Member, American Institute of Certified Public Accountants
  • Member, California Society of Certified Public Accountants


  • BA, business administration, Franklin & Marshall College