Recognized in Best Lawyers since 2015 
Grant C. Killoran is a shareholder at O’Neil, Cannon, Hollman, DeJong & Laing SC in Milwaukee, Wisconsin, and previously served as Chair of the firm’s Litigation Practice Group. He represents clients in Wisconsin state and federal courts, as well as in courts throughout the United States, in complex business, health care, and employment disputes. His practice also includes arts and entertainment law, with a focus on matters involving the music industry.
Grant’s recognized practice areas include Commercial Litigation and Litigation - Health Care. He represents businesses, health care organizations, professionals, and individuals in matters involving commercial and business disputes, health care litigation, employment claims, contract disputes, corporate disagreements, restrictive covenants, trade secrets, tort claims, appeals, and alternative dispute resolution.
Grant is listed in The Best Lawyers in America for Commercial Litigation and Litigation - Health Care. He has also received professional recognition from Super Lawyers, Martindale-Hubbell, and Avvo.
Grant serves as the Wisconsin State Delegate to the American Bar Association and is a member of the ABA House of Delegates. He previously served on the ABA’s Board of Governors. Grant is a Life Fellow of the American Bar Foundation, a Fellow of the Wisconsin Law Foundation, and Co-Chair of the American Bar Foundation for the State of Wisconsin.
Grant Assists Clients With
- Commercial and Business Litigation
- Health Care Industry Litigation, Disputes, and Contracting
- Employment Litigation and Counseling
- Risk Management Counseling
- Business Counseling and Advice
- Restrictive Covenant and Trade Secret Litigation
- Corporate Disputes
- Contract Disputes
- Tort Disputes
- Appellate Litigation
- Alternative Dispute Resolution
- Arts and Entertainment Law
