About Barbara Ann
Barbara Ann Kosacz is a licensed attorney admitted to practice law in the State of California. She was admitted to the California State Bar in 1988. Her license is currently in active status. Ms. Kosacz is a partner at Cooley LLP, a law firm specializing in business and corporate law, with offices in Palo Alto, California. She has been practicing law for over 37 years, serving clients throughout California.
Ms. Kosacz earned her Juris Doctor degree from the University of California, Berkeley School of Law in 1988. Prior to law school, she completed her undergraduate education at Stanford University, receiving a Bachelor of Arts degree in Classics in 1980. During her time at Berkeley Law, she was recognized for her academic achievements and commitment to the legal profession.
Ms. Kosacz concentrates her practice in business and corporate law, with a particular focus on mergers and acquisitions, technology transactions, and life sciences. She represents clients ranging from early-stage startups to larger public companies, venture funds, investment banks, and non-profit institutions. Her practice encompasses all stages of legal work, including initial case evaluation, negotiations, and complex transactions. She has been recognized by Best Lawyers in America since 2008 and was named Biotechnology Lawyer of the Year in 2018. ([sec.gov](https://www.sec.gov/Archives/edgar/data/1828522/000156459021000862/lwacu-424b4.htm?utm_source=openai))
Throughout her career, Ms. Kosacz has handled cases in various courts, including the Superior Court of California and the United States District Court for the Northern District of California. She has also appeared before the California Court of Appeal on multiple occasions. Prior to joining Cooley LLP, she served as Chief Operating Officer and General Counsel at Kronos Bio, Inc. from July 2020 until February 2024. ([sec.gov](https://www.sec.gov/Archives/edgar/data/1828522/000156459021000862/lwacu-424b4.htm?utm_source=openai))
Ms. Kosacz is an active member of the California State Bar Association and has been recognized as a leading lawyer for healthcare and life sciences by Legal 500. She has served on the Board of Directors of Athira Pharma, Inc., where she was Chair of the compensation committee, and on the Board of Directors of The Scripps Research Institute. She has also served on the Board of Directors of Phoenix Biotech Acquisition Corp., Locus Walk Acquisition Corp., and Arsenal Biosciences, Inc., where she served on the audit committee. ([ir.hillevax.com](https://ir.hillevax.com/static-files/e4924818-a074-4b94-a0e3-b08dd35ec242?utm_source=openai))
