Kimberly Petillo-Décossard is an M&A partner based in White & Case’s New York office.

She advises public and private companies, boards, founders and family offices on complex business law matters, focusing on mergers and acquisitions and other strategic transactions, as well as governance, disclosure and compliance matters.

Recognized as a Dealmaker of the Year by The American Lawyer in 2022, Kimberly has also twice been named one of the "Most Influential Women in Mid-Market M&A" by Mergers & Acquisitions magazine and has been featured in The Deal's "Top Women of Dealmaking." Kimberly was shortlisted for IFLR Americas Awards 2022 "Women Dealmakers Hall of Fame" and in 2021 she was named a "Mergers & Acquisitions MVP" by Law360, just one of six lawyers to receive the honor, nationwide. Kimberly has also been listed in Lawdragon's The 500 Leading Lawyers and The 500 Leading Dealmakers guides since 2021. She is recognized as Highly Regarded and as a Women Leader by IFLR1000.

A highly-sought speaker and author on M&A, transactional matters and corporate governance topics, Kimberly has written pieces for Law360, The Deal, Corporate Board Member, New York Law Journal and Directorship, a publication of the National Association of Corporate Directors (NACD). She has moderated or spoken on panels at The Deal Economy Conference in New York, NACD's Summit, the ABA's Women in M&A Task Force, BIO's CEO Conference and Thomson Reuters' NY M&A Forum, among many others.

Kimberly founded the Women's Leadership Initiative ("WLI") at Albany Law School and continues to chair the WLI Advisory Committee. She was honored for this work in 2023 and 2024, by the New York Law Journal's Legal Awards and by the National Association of Women Lawyers, respectively. Kimberly also serves on the Board of Trustees at Albany Law School, the Board of Trustees at St. Hilda's & St. Hugh's School and on the New York-Presbyterian's Leadership Council on Children's and Women's Health.