Odenberg Ullakko Muranishi & Co.

Odenberg Ullakko Muranishi & Co. (OUM) was a prominent regional certified public accounting and consulting firm headquartered in San Francisco, California. The firm established a strong reputation for providing specialized audit, tax, and advisory services to the life sciences, technology, and real estate industries. OUM was particularly noted for its expertise in assisting venture-backed biotechnology and medical device companies with complex financial reporting, tax compliance, and IPO readiness. In July 2021, OUM was acquired by WithumSmith+Brown, PC (Withum), a major national accounting and advisory firm. This acquisition allowed Withum to significantly expand its West Coast presence and bolster its specialized life sciences practice. Prior to the acquisition, OUM operated offices in San Francisco and Carlsbad, California.