Biography

Since October 2013, Ms. Ostolaza has been a partner at Sidley Austin LLP, a global law firm with 21 offices in four continents and $3.1 billion in revenue. She currently serves as Sidley’s Management Committee Chair and as a member of the firm’s Executive Committee. Ms. Ostolaza has served on a number of nonprofit organizations as a board member or trustee. She regularly advises companies and boards in governance, crisis management, internal investigations, and litigation matters. Ms. Ostolaza was recently named to CNBC’s 2024 inaugural list of 50 “Changemakers: Women Transforming Business.” She has received-awards for her leadership, legal work, and community involvement, including the American Bar Association Margaret Brent award in 2023, Girls, Inc.’s “Woman of Achievement” award, Hispanic National Bar Law Firm Leader of 2022, Texas Lawyer’s Lifetime Achievement Award, and one of 20 “Women of Excellence” nationally by Hispanic Business magazine. In 2018, she received the Anti-Defamation League’s Schoenbrun Jurisprudence Award for her outstanding leadership and exemplary contributions to the community.

Ms. Ostolaza has been a director of Lionsgate (NYSE: LGF.A, LGF.B) since December 2019.

Ms. Ostolaza is the Chair of Lionsgate Studios’ Nominating and Corporate Governance Committee.