In 1995 she joined Industry Entertainment (formerly Addis/Wechsler) as an assistant.
In March 2016 she became a partner at Lighthouse Management & Media.
Has a daughter Dylan and son Will.
She launched her own company, Margaret Riley Management in 2002, before segueing to Brillstein Entertainment Partners from October 2006 through March 2016.
Served on the board of the OmniPeace Foundation, a nonprofit whose mission is to provide music education to children in Africa and its developing countries.