Vincent S. Oleszkiewicz

Susan Daley is a partner with Perkins Coie and has more than 20 years of experience in the areas of executive compensation, securities and employee benefits. She is currently President of the Chicago Chapter of the National Association of Stock Plan Professionals, Chair of the Federal Securities Law Subcommittee of the Employee Benefits Committee of the American Bar Association Section of Taxation, and a member of the BNA Pension & Benefits Advisory Board. She is a former Chair of the Ill...

David Koropp is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. David, who practices law in Chicago, Illinois, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David is held by other top lawyers in the same geographic and legal practice area.

Marcelo Halpern is a partner with the firm's Business practice and a member of the Technology Transactions & Privacy group. Marcelo's practice focuses on transactional, strategic and corporate representation of global "FORTUNE 100" companies, start-up and emerging growth companies, as well as U.S.-based and international governments and non-profits. His experience includes structuring and negotiating technology and intellectual property-oriented strategic alliances and joint ventures; sof...

Robert E. Harrington III is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs and Railroad Law. Robert E., who practices law in Chicago, Illinois, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Robert E. is held by other top lawyers in the same geographic and legal practice area.

Brent has devoted more than 30 years to advising banks, thrifts, insurance companies and agencies, securities broker dealers, and investment advisory clients on complex regulatory matters, formation and capitalization, business combinations, examination, and enforcement issues. Brent is a strong advocate for his clients, dedicated to achieving reasonable and practical solutions. Brent’s experience is focused on the financial services industry. He began his career as an examiner with the...

Kenneth A. Wexler is a top attorney recognized by Best Lawyers in the practice area(s) of Antitrust Law. Kenneth A., 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 Kenneth A. is held by other top lawyers in the same geographic and legal practice area.

Partner Ryan T. Johnson concentrates his practice in the areas of construction law, professional liability, and complex commercial litigation. Ryan has over 15 years of experience successfully representing clients in construction related matters in Illinois and nationally, including jury and bench trials in state and federal courts as well as arbitration proceedings. In addition to dispute resolution, Ryan also engages in contract negotiations, contracting drafting and business counseling on ...

A practitioner in the area of family law for over 30 years, Dean Dussias has built his reputation by representing entrepreneurs, executives and other prominent clients in high profile and financially complicated cases with a careful, discreet approach that solves problems and mitigates risks. While there are some cases involving children or unforeseen financial roadblocks that present unavoidable delays, Dean has learned from his vast experience that in most cases, the best approach is a prag...

With more than 28 years of experience in infrastructure and energy transactions, Eddie Lowry is a trusted authority for clients in this dynamic and rapidly evolving sector. He advises developers, operators, and investors on the full economic cycle of data centers and data energy projects, including all aspects of development, operation, energy procurement, tax incentives, construction, acquisition, disposition, finance, land use, and leasing for this niche asset class. An integral part of the...

Mark Filip, a former federal judge and high-ranking Justice Department official, helps to lead Kirkland’s government enforcement defense and internal investigations group, and serves as a member of the Firm’s Executive Committee. As a partner in the Firm’s Chicago and Washington, D.C. offices, Mark has successfully guided numerous Fortune 100 companies and financial institutions through complex mission-critical moments, counseling leaders and Boards of Directors on high-stak...