Greg is AV® Preeminent ™ Rated, Peer Review Rated by Martindale-Hubbell.  He is the equity partner in charge of Koleos Rosenberg  McMahon’s law office in Orlando, Florida.  


He has substantial experience with first and third party insurance disputes (property damage, coverage disputes, personal injury, wrongful death, commercial and personal automobile, and premises liability); general insurance (agent/broker liability, breach of fiduciary duty and fraud); bad faith and punitive damages; commercial litigation (contracts, non-compete agreements, and commercial eviction); professional liability (legal, insurance agent/broker and engineer); and ERISA life and disability litigation.  Greg frequently lectures nationally and in Florida on topics involving property and casualty claims, bad faith as well as life and disability coverage.


Greg has been a member of The Florida Bar since 1998 and is also licensed to practice in all three of the U.S. District Courts in Florida, the U.S. Court of Appeals for the Eleventh Circuit, and is a member of the U.S. Supreme Court. His professional memberships include the American Bar Association; The Florida Bar (where he served on the Student Education and Admissions Committee to the Florida Bar from 1999-2001); the Orange County Bar Association (Citizens Disputes Mediation Program 2006-2017); the Defense Research Institute; and the Florida Defense Lawyers Association. 


Prior to becoming an attorney, Greg earned his B.S. degree in Criminology from the Florida State University. Thereafter, he worked as a Registered Representative for Merrill Lynch & Company. He then attended law school at the Shepard Broad Law Center where he served as editor-in-chief of the Nova Law Review, and earned his Juris Doctor degree, cum laude. 


Greg lives in Orlando with his wife, Angela and their 3 children.


Angela is an associate attorney in the firm's Orlando, Florida office. 

She has substantial experience with insurance law, business law, family law, consumer debt issues and commercial leases.  Angela has been a member of The Florida Bar since 2008 and is also licensed to practice in the Southern and Middle U.S. District Courts in Florida. She is a member of the Young Lawyers section of the Florida Bar, and was formerly a Staff Attorney to the judiciary for the Ninth Judicial Circuit Court, before entering private practice.


Once in private practice, the Supreme Court of Florida Young Lawyers Division of the Florida Bar and the Florida Pro Bono Coordinators Association awarded Angela for providing exceptional services to underprivileged members in the Orlando community. Most recently, in 2015, she was invited to join the George C. Young American Inn of Court, by a member of the judiciary, whose members are from all areas of federal and state practice, and include some of the best and most respected lawyers in the state.

Prior to becoming an attorney, Angela completed her undergraduate studies at Austin Peay State University, on a debate team scholarship, receiving a Bachelor’s of Business Administration degree in Marketing. She then worked for an international Fortune 500 company prior to attending law school at Western Michigan University, earning several book awards, including Florida Civil and Criminal Procedure, where she completed her Juris Doctor, with a concentration in litigation. During this time, Mrs. McMahon was the only law student accepted for a federal clerkship with the U.S. Department of Defense, in Washington D.C., where she worked for the Deputy Assistant Secretary of the Army, in the Equal Employment and Civil Rights Office, and prepared final agency decisions.

Angela lives with her husband Greg and three children in Orlando.

Proudly created with