Rachel N. Sostrin

Jeffrey M. Alter is a top attorney recognized by Best Lawyers in the practice area(s) of Workers' Compensation Law - Claimants. Jeffrey M., who practices law in Chicago, Illinois, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jeffrey M. is held by other top lawyers in the same geographic and legal practice area.

John O’Neil’s legal knowledge, business savvy, and leadership of complex transactions have earned him a reputation as a global leader in private equity fund matters. John heads the Investment Funds Practice Group, the Firm’s leading-edge global platform that provides innovative and bespoke legal strategies to sponsors and funds of all kinds. John is also a member of the Firm's Executive Committee. John has been recognized by Chamber’s Global, Chambers USA, IFLR 1000, L...

Peter P. Knight is a top attorney recognized by Best Lawyers in the practice area(s) of Bankruptcy and Creditor Debtor Rights / Insolvency and Reorganization Law. Peter P., who practices law in Chicago, Illinois, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Peter P. is held by other top lawyers in the same geographic and legal practice area.

Bill Arnault is a litigation partner in the Firm’s Chicago office. He focuses his practice in the restructuring context. He also has extensive experience litigating complex commercial cases in federal and state trial and appellate courts throughout the United States, including contract, energy, fiduciary duty, fraudulent transfer, bankruptcy, and employment cases. He has chaired or co-led multiple trials and hearings, including disputes involving Parker Drilling Company, Emerald Oil, In...

Andrew is a trial and appellate lawyer in the firm’s Litigation and Insurance Policyholder Practice Groups. Andrew has earned a reputation as a shrewd and versatile litigator capable of tackling the most vexing legal problems. Andrew has an active commercial litigation practice spanning multiple industries with experience successfully prosecuting and defending a wide variety of litigation and arbitration matters from inception through trial and appeals. Andrew’s dynamic skill set ...

Alejandro Menchaca is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Intellectual Property, Litigation - Patent and Patent Law. Alejandro, who practices law in Chicago, Illinois, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Alejandro is held by other top lawyers in the same geographic and legal practice area.

Ken is a senior member of Kirkland’s dynamic Asset Finance & Securitization Practice Group. According to Chambers 2021, sources consider Ken to be one of the "godfathers of the auto finance industry." Since 1990, he has handled securitizations and principal finance matters involving a variety of asset classes on behalf of originators, underwriters, platform agents, principal finance groups and conduit sponsors. Ken has been extremely active in ABS reform matters. He participated in ...

John Lausch is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: White-Collar. John, who practices law in Chicago, Illinois, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John is held by other top lawyers in the same geographic and legal practice area.

Tom represents clients in patent and trademark prosecution, intellectual property litigation, and post-grant patent challenges before the Patent Trial and Appeal Board (PTAB). Tom has a broad base of experience in various technological and business areas, particularly in pharmaceutical, biotechnology, chemical and medical device inventions. He drafts invalidity opinions, investigates freedom to operate, counsels on strategic portfolio management, and conducts due diligence investigations prio...

As a seasoned litigator with the added benefit of in-house experience, Maile takes pride in her in-depth understanding of her clients, their businesses, and their industries so she can anticipate their needs, their pain points, and the internal and external pressures they face. With over 20 years of experience litigating and counseling clients in all types of commercial litigation, Maile is meticulous, responsive, tough, and strategic. Since joining Barack Ferrazzano, Maile has represented cl...