OUM & Co. LLP

AccountingCalifornia, United States11-50 Employees

OUM & Co. LLP is an accounting and business advisory firm based in San Francisco, California, with an additional office in San Diego. The firm provides assurance and audit, tax, SEC compliance, and technology and risk advisory services to both public and private companies, focusing on life sciences, technology, and related sectors such as biotech, specialty pharma, diagnostics and medical devices. Many of its professionals are partners and managers who previously worked at large firms, and the firm emphasizes timely communication and aims to keep overhead lower than the Big 4.

It is recognized as a Top 25 Bay Area firm and as one of the Top 200 firms in the U.S. by Inside Public Accounting. The firm pursues lifelong relationships with clients, employees, and communities, and it promotes a collaborative, diverse environment that values authentic contribution. Its client base includes companies in life sciences, technology, real estate, private equity/investment funds, and manufacturing, reflecting activity across multiple industries.

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