The event, dubbed "Experts and Enthusiasts," will be held in Park City, Utah, and is sponsored by Solamere Group, the private equity firm where Romney now serves as chairman. The firm was founded by Romney's son, Tagg, and Spence Zwick, the finance chair of his campaign.

Last year, Romney held a similar retreat in the Utah resort town for hundreds of his campaign's top donors. Campaign staff and major Republican political figures including former Secretary of State Condoleezza Rice briefed donors.

According to the Globe, attendance to the event is expected to run $5,000, although is not considered a political donation.

The event will be Romney's first foray back into public life since his electoral defeat, with the exception of an appearance earlier this year at the Conservative Political Action Conference. At that time, Romney pledged to remain active in public life.

“I am sorry that I will not be your president,” he said. “But I will be your co-worker, and I will work shoulder-to-shoulder alongside you."