10 Sidley Austin M&A partners
Partner and Global Co-Head of M&A Practice, Partner - Global M&A and Partner are among the current titles held by these Sidley Austin M&A partners in US offices. A reader can learn how M&A partners work at Sidley Austin from people who have held the role.
Professionals to explore
Chaim Theil
LinkedInExperience: Partner · Sidley Austin LLP
Chaim Theil has been a Partner at Sidley Austin LLP since October 2021, based in New York, and the profile headline reads Partner in M&A/PE Group at Sidley Austin LLP, with a practice in domestic and cross-border M&A, carve-outs and joint ventures. Chaim Theil was Counsel at Paul, Weiss, Rifkind, Wharton & Garrison LLP from 2018 to 2021.
David Grinberg
LinkedInExperience: Partner - Global M&A · Sidley Austin LLP
David Grinberg has been Partner - Global M&A at Sidley Austin LLP since January 2016, based in Los Angeles, and the profile headline says the role includes leading the firm's beauty and personal care practice. David Grinberg was a Partner at Manatt, Phelps & Phillips, LLP from 2002 to 2016 and an Associate at Skadden, Arps, Slate, Meagher & Flom LLP and Affiliates from 1999 to 2002.
Feifei Bian
LinkedInExperience: Partner · Sidley Austin LLP
Feifei Bian has been a Partner at Sidley Austin LLP since January 2024, based in San Francisco, and the profile headline reads M&A and Private Equity Partner at Sidley Austin LLP. Feifei Bian was a Senior Managing Associate at Sidley Austin LLP from 2017 to 2024, an Associate there from 2015 to 2017 and an Attorney at Katten Muchin Rosenman LLP from 2014 to 2015.
George Hunter
LinkedInExperience: Partner · Sidley Austin LLP
George Hunter has been a Partner at Sidley Austin LLP since March 2025, based in New York, and the profile headline reads M&A Partner at Sidley, with a practice advising companies and their boards on M&A and special governance situations. George Hunter was a Partner at Jones Day from 2021 to 2025 and an Associate there from 2011 to 2020.
Krista Kay Lewis
LinkedInExperience: Partner · Sidley Austin LLP
Krista Kay Lewis has been a Partner at Sidley Austin LLP since January 2024, based in Washington, D.C., and the profile headline reads Partner, M&A and Private Equity, with a practice in domestic and cross-border mergers, acquisitions, divestitures and investments. Krista Kay Lewis was a Senior Managing Associate at the firm from 2021 to 2023.
Luke Ashworth
LinkedInExperience: Partner · Sidley Austin LLP
Luke Ashworth has been a Partner at Sidley Austin LLP since January 2023 and describes being a partner in the firm's Century City office, and the profile headline reads Partner, M&A and Private Equity. Luke Ashworth was an Associate at Sidley Austin LLP from 2016 to 2023 and at Weil, Gotshal & Manges LLP from 2014 to 2016.
Mark Metts
LinkedInExperience: Partner · Sidley Austin LLP
Mark Metts has been a Partner at Sidley Austin LLP since February 2012, based in Houston, and describes serving as co-chair of Sidley's global M&A practice and as a member of its private equity and energy practices. Mark Metts was a Partner at Jones Day from 2003 to 2012 and held associate and partner roles at Vinson & Elkins from 1983 to 1999.
Paul L. Choi
LinkedInExperience: Partner and Global Co-Head of M&A Practice · Sidley Austin LLP
Paul L. Choi has been Partner and Global Co-Head of M&A Practice at Sidley Austin LLP since August 1990, based in the Greater Chicago Area. The profile headline reads Global Co-Leader, M&A, Co-Leader, Public Company Practice and Executive Committee, and Paul L. Choi was a Judicial Law Clerk at the United States Court of Appeals for the DC Circuit from 1989 to 1990.
Robert Garritano
LinkedInExperience: Partner · Sidley Austin LLP
Robert Garritano has been a Partner at Sidley Austin LLP since January 2025 and describes being based in the firm's New York office, with a focus on mergers and acquisitions, private equity and growth equity. Robert Garritano was a Senior Managing Associate at Sidley Austin LLP from 2018 to 2024 and a Solicitor at King & Wood Mallesons from 2013 to 2017.
Seth Katz
LinkedInExperience: Partner · Sidley Austin LLP
Seth Katz has been a Partner at Sidley Austin LLP since September 2002 and describes being a partner in the firm's Chicago office and a member of its Corporate group, with principal practice areas in private equity transactions, mergers and acquisitions and venture capital investments. The profile headline reads M&A and Private Equity Partner at Sidley Austin LLP.
Choose the right perspective
Match the person's practice focus, such as public company deals, private equity transactions or a particular industry, to the question you want to explore. Weigh how long each person has been a partner and which office they work from, since that shapes the range of matters they have seen.
Questions to take into the conversation
- 01What does a typical week look like for you as an M&A partner?
- 02How has your own practice changed since you became a partner?
- 03What do you think people outside the field most often misunderstand about how a transaction gets done?
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About this directory
This is a professional research starting point based on business profile data retrieved on . Titles and companies reflect that source snapshot; roles marked former had ended by then. Check the linked profiles for current details. Inclusion does not imply Instant Expert membership or availability.
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