Meet our Team

Attorney Sean M. Sweeney

Sean is a shareholder and the co-head of Halling & Cayo’s business litigation practice group. Sean thoroughly enjoys representing businesses large and small and especially looks forward to anything that can get him into trial. Sean has represented clients in dozens of bench trials, jury trials, and arbitrations in his career and often cautions clients against use of the “f” word, “Fair.” No litigant feels what has brought them to be in Court is fair, instead Sean encourages his clients to focus on what we can change, managing our approach, and pushing to get the best result possible. You can see his full profile here, call him directly at 414-755-5020 or e-mail him at sms@hallingcayo.com 

Attorney Daniel J. O’Brien

 Dan is a shareholder and the other co-head of Halling & Cayo’s business litigation practice group. Dan has represented businesses in court cases for more than 25 years and is fond of explaining to clients that when selecting coun
sel, they should be conscious of the difference between trial lawyers and litigators. Trial lawyers work to resolve your case, but not only are not afraid to go to trial, but enjoy it. Litigators do everything they can to push the case along and avoid a trial, often pushing for a settlement or anything to avoid seeing the inside of a courtroom. Dan strives to fulfill the aspiration of being a trial lawyer, and has the track record to support his success in that endeavor. You can see his full profile here, call him at 414-271-3400 or e-mail him at djo@hallingcayo.com
 

Attorney Seth Hill

Seth is an attorney and litigator in Halling & Cayo’s business litigation practice group. Seth enjoys nothing more than diving into a problem for a client and working out a practical solution. This has served him well in his practice both defending companies, prosecuting claims, and finding a way to collect on business judgments with some of the best in the business. If a business is owed money, you cannot find anyone better than Seth to find a way to recover those funds. You can see his full profile here, call him at 414-271-3400 or e-mail him at dsh@hallingcayo.com