Diane E. Wittenberg, CPA

Audit Partner

With Haskell & White since: 2002

Diane E. Wittenberg is an Audit Partner in the Firm’s Audit and Business Advisory Services Group and has been with the Firm since 2002. Prior to joining Haskell & White LLP, she spent 17 years with Arthur Andersen. Diane leads her teams to provide a variety of audit and business advisory services for public and private companies, as well as nonprofit organizations. Providing value beyond meeting compliance requirements is a key focus for her.

Diane has experience in multiple industries, working with companies that range from small start-ups to large, multi-national corporations. Her experience also includes special projects, including mergers and acquisitions, initial public offerings, secondary offerings and SOX compliance consulting projects. Diane’s practice also extends to the non-profit sector where she works with a wide variety of organizations ranging from community based non-profits to universities and foundations that require specialized auditing requirements to receive their government funding.

Industries & Areas of Specialty:
  • Life Science/ Bio-Pharma
  • Manufacturing, Distribution & Technology
  • Non-Profit
  • Real Estate
  • Public & Private Companies
  • Mergers & Acquisitions
  • Initial Public Offerings
  • Compliance
Industry and Professional Affiliations:
  • American Institute of Certified Public Accountants (AICPA)
  • Association for Corporate Growth – Board of Directors and Chair of Women in Leadership Committee
  • California Society of Certified Public Accountants (CalCPA)
  • University of California, Santa Barbara
  • Graduated with High Honors
  • Scored in the top 10 scores on the May 1985 CPA exam
Community Involvement:
  • Mariposa Women and Family Center – Executive Committee of the Board of Directors, Chair of the Finance Committee and Treasurer
  • Discovery Cube OC – Audit Committee Chairman

“Growing and developing our team is an integral part of our operating values and culture. By making the investment in our team, we are able to lead through exceptional client service and innovative new ways of delivering results.”

Posts by Diane Wittenberg

Financial Statements at a Glance

Financial statements tell investors information about an organization’s financial performance, helping to ensure corporate transparency and accountability. But they can also be used internally to help management make strategic decisions, improve upon past results and add value. There are three parts to comprehensive financial reporting under U.S. Generally Accepted Accounting Principles (GAAP) — each with Read more...

Five or More Employees?

This year, retirement plans will be required for California employers with five or more employees. The legislation passed in 2016 required all employers with five or more employees to offer a retirement savings account. This law also applies to nonprofit organizations. 2022 brings the final implementation phase requiring organizations with 5-49 employees to comply by Read more...

Are you ready for the upcoming audit season?

An external audit is less stressful and less intrusive if you anticipate your auditor’s document requests. Auditors typically ask clients to provide similar documents year after year. They’ll accept copies or client-prepared schedules for certain items, such as bank reconciliations and fixed asset ledgers. To verify other items, such as leases, invoices and bank statements, Read more...