"She is a great practitioner."
Chambers 2023


Phyllis Korff is a partner in Mayer Brown’s New York office and a member of the Capital Markets practice. She has extensive experience in representing US and international issuers and investment banks in a wide variety of financing matters. Her industry experience is broad-based. It includes: asset management and other financial services, insurance, biotech, health care, technology and manufacturing. She has worked with companies and underwriters based not only in the United States but also in Asia, Europe, Canada and Israel that want to access United States public and private markets. Phyllis has worked on all types of securities from common equity to convertible and high yield debt. She has worked on scores of initial public offerings, as well as follow-on offerings, exchange offerings and other transactions registered with the Securities and Exchange Commission (SEC), as well as offerings exempt from SEC registration pursuant to Rule 144A and Regulation S. Phyllis works with private companies in pre-IPO financings and private tender offers as well as in IPO readiness and corporate governance matters.

Chambers Global 2023 ranks Phyllis as a “Senior Statesperson” for Capital Markets: Debt & Equity: Eastern US, where clients told the guide she is “’a distinguished practitioner,’” and “’a fantastic lawyer who has seen it all; a real asset to this area.’” Chambers Global 2023 also ranks Phyllis for Corporate/M&A (USA) as a “Foreign Expert in Israel” noting that she “has a wealth of experience in handling Israeli deals... cover[ing] a range of sectors, including healthcare, technology and manufacturing.” Chambers USA 2023 ranks Phyllis as a “Senior Statesperson” in the category of Capital Markets: Debt & Equity: Eastern United States (Nationwide), where clients say, “’Her approach is commercial and client-friendly,’” and “’…she offers excellent advice.’” She is also “terrific on all aspects of IPOs,” not least because she is “an excellent technical lawyer and creates a good working environment” for the multiple players and interest groups involved in such offerings. The Legal 500 US 2023 recommends Phyllis in the category of Capital Markets: Debt Offerings and in the category of Capital Markets: Global Offerings, noting that she is an “experienced figure in Israel deals.” The IFLR1000 guide ranks Phyllis as “highly regarded” for her work in the US for Capital Markets. She has been named a finalist in the Finance Lawyer of the Year category at the inaugural Chambers USA Women in Law Awards. In addition, she repeatedly has been selected for inclusion in The Best Lawyers in America and The International Who’s Who of Capital Markets Lawyers.


美国纽约大学法学院, 法律博士
Notes Editor, New York University Law Review

Boston University, EdM

Brooklyn College, City University of New York, 学士


  • 纽约州