Kimberly Pirtle Leaves Sotheby’s to Launch Gabriel Advisory Group
Kimberly Pirtle has exited Sotheby’s to establish Gabriel Advisory Group, a new advisory practice built around a premise that is gaining traction in the art market: collecting and philanthropy are often inseparable. The firm will advise clients on acquisitions, philanthropic strategy, and institutional engagement, working across both the primary and secondary markets.
Pirtle’s move follows a career that moved quickly from Sotheby’s collectors group into auctioneering. Along the way, she developed a close view of how collectors operate when they are not simply buying works, but thinking about artists, museums, and the broader cultural infrastructure that supports them. That perspective, she said, did not always fit neatly inside the transaction-driven structure of an auction house.
Her new firm is intended to formalize that overlap. For some clients, Gabriel Advisory Group will help navigate auctions and gallery relationships. For others, it will focus on charitable gifting strategies or deeper institutional ties with museums and foundations. The model reflects a shift in how many collectors now approach the market: not as a sequence of isolated purchases, but as part of a longer-term cultural role.
Pirtle’s experience on the benefit auction circuit helped sharpen that view. She worked with organizations including the Pratt Institute, the Bronx Museum of the Arts, the Queens Museum, and the Gordon Parks Foundation, where fundraising, donor cultivation, and institutional support were central concerns. In that setting, she saw the same pattern repeatedly: the most active collectors were often also the most committed philanthropists.
“What I started to see is that it’s often the same person,” Pirtle said, describing the overlap between benefit-auction participants and major supporters of cultural institutions. “The most engaged collectors are also deeply involved in philanthropy.”
Pirtle is also continuing as a VIP consultant with Frieze, a role that keeps her close to the primary market and to the decisions being made there in real time. For now, Gabriel Advisory Group is deliberately small. Its ambition, however, is broader than scale: to build a practice that reflects how collectors actually move through the art world, rather than how the market has traditionally divided its lanes.
