Peter Stach is a corporate partner in the Chicago office of Kirkland & Ellis LLP. His practice focuses on advising private equity firms and public and private companies on complex M&A and corporate transactions, including domestic and international mergers and acquisitions, corporate carve-out transactions, recapitalizations, leveraged buyouts, "going-private" transactions and venture capital and growth equity investments. Peter has handled matters for numerous private equity sponsors including Thoma Bravo, GTCR, Sun Capital and SK Capital, as well as many of their portfolio companies, in transactions ranging in size from several million dollars to more than $5 billion. Over the course of his career, Peter has represented clients in transactions focused on the software, technology, media and telecommunications, specialty chemicals and life sciences industries.

At The Deal’s annual Deal Awards in 2020, Kirkland was recognized for “Private Equity Deal of the Year” for Digicert’s sale to TA Associates and Clearlake Capital Group, where Peter served as co-lead counsel on the matter.



Named a Notable Practitioner in Private Equity and M&A by IFLR1000, 2021

Recognized for "Private Equity Deal of the Year" by The Deal, 2020

Memberships & Affiliations

Former Co-Chair, Northwestern University Pritzker School of Law Alumni Club of Chicago


Admissions & Qualifications

  • 2012Illinois


  • Northwestern Pritzker School of LawJ.D.cum laude2012
  • Northwestern UniversityB.A., Political Science2006