Stephan P. McMahon
Stephan has over 12 years of experience working with closely held businesses.
Dedicated to his clients, Stephan provides valuation, tax, accounting, and management advisory services. Viewing the growth of enterprise (business) value as an integral part of an owner’s strategy and responsibility Stephan focuses on proactively identifying and communicating critical business, regulatory and accounting solutions for his clients, helping them to improve efficiency, while reducing operational costs and risk. Given the current business climate, as challenging as it is, Stephan sees it as an opportunity to bring fresh ideas and creative solutions to his clients.
Stephan is highly involved in community endeavors on the Cape. He feels strongly about leaving a positive imprint on people’s lives both through professional and personal relationships, which is exemplified by his role on the Board of Directors for the Cape Cod Chamber and as President (Past) of the Board of Directors for the Yarmouth Chamber of Commerce.
Personally, as a husband and father of two, time with family is paramount. Stephan is a perennial Little League coach in the Harwich – Chatham District, and coaches basketball in Harwich as well, and can be found on the sidelines of every Monomoy High School field hockey game – although he doesn’t understand the game at all. His latest family hobby uptake is fishing the Cape’s waters – there is a lot to still learn here but he is having fun trying!
Madeline Kelleher, CPA / MST
Madeline joined the Stephan P. McMahon & Company team in November 2019 as a Tax Manager.
Her fourteen years in public accounting provides extensive experience, with stints served at the Big 4, regional, and family firms. Madeline shares the team’s vision for advising closely held businesses and is committed to excellent client service. She is a Summa Cum Laude graduate from Boston College and obtained her Masters in Taxation from Bentley University.
Being married to a native Cape Codder, Madeline enjoys local beaches and sites. For relaxation, she and her husband vacation at national parks and hopes to repeat their three week Alaska trip.
Chris joined the Stephan P. McMahon & Company team as an Accounting Associate in October of 2019.
Chris earned his Bachelor of Science degree in Accountancy at Bentley University and is currently enrolled in Bentley’s Masters in Taxation graduate program, which he expects to complete in December 2020. Prior to joining the SPM&Co team, Chris served in the United States Marine Corps for 9 years as a Communications Technician. During his time in the Marine Corps, he was stationed at Camp Pendleton, CA, Quantico, VA and completed a tour in Afghanistan. After his enlistment Chris moved back to the Cape with his wife Ashlee and two kids Camden and Evan, and currently resides in Falmouth.
When away from the office and not studying for the CPA exam, Chris enjoys spending time with his family and friends, hiking, golfing and weightlifting.
Junior Accounting Associate
Ashley joined the Stephan P. McMahon & Company team as a Junior Accounting Associate in March of 2020.
Ashley earned her Associates of Science degree in Business Administration from Cape Cod Community College and is currently enrolled in the accounting program at UMass Dartmouth, which she expects to complete in December 2020. Prior to joining the SPM&Co team, she worked both as a Payroll Specialist and as an Administrator, establishing and maintaining a positive relationship with all clients.
Ashley grew up on the beautiful island of Jamaica and currently resides in Harwich with her husband and two children. Away from the office, she enjoys going to the beach, taking nature walks with her family, doing home improvements and traveling.
As an Office Administrator, Jenn works to support the Stephan P. McMahon & Company team while also enhancing the client experience. Her stellar internal and external client service skills are backed by more than 12 years of administrative experience. Prior to joining SPM&Co in 2018, she served in the United States Air Force performing multiple administration duties during her 12.5 years of enlistment. She also did administration work for a non-profit organization in Colorado for almost two years.
Jenn loves that her role at SPM&Co keeps her on her toes. She contributes to a myriad of company functions ranging from record keeping and marketing to tax processing. Amid the flurry of tax season is where her multitasking and organizational skills shine. She always looks forward to seeing new and familiar faces of our clients day-to-day.
Away from the office, Jenn enjoys visiting the many beaches on Cape Cod since she recently relocated here in January 2018.. Thoughtful and creative, she also enjoys decorating and doing fun DIY projects around her home.