Meet the team
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Maria Los
Deputy Chairman, Head of Client Advisory Americas
BIOGRAPHY
Maria C. Los, Deputy Chairman & Head of Client Advisory Americas, works with many of Christie’s most important clients who buy and sell at auction as well as privately. Collaborating closely with her specialist colleagues, she ensures that these collectors are advised effectively. Maria’s longstanding international client relationships have also contributed to several significant cross-departmental consignments for the firm. Maria joined Christie’s in 1996 as an account manager assistant in the Estates, Appraisals & Valuations Department. She went on to spend ten years in Client Advisory followed by two years in the Jewelry Department. She was promoted to the Chairman’s Office in 2009, relaunched Client Advisory in 2011 and was named Deputy Chairman in 2014. Prior to joining Christie’s, she worked at the National Endowment for the Arts in Washington, D.C. in their Visual Artists Fellowships Program. Maria received her B.S. in French and Italian and her M.A. in Liberal Studies from Georgetown University.
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Margot Rosenberg
Deputy Chairman
BIOGRAPHY
Margot Rosenberg, Deputy Chairman, joined Christie’s Chairman’s Office in 2011 . With over a twenty year tenure in the auction business, working both as a specialist and with clients, Margot’s experience and relationships contribute to her success in advising some of Christie’s top clients. Margot works collaboratively with colleagues across platforms in helping collectors with transactions both privately and at auction. Prior to joining the Chairman’s Office, she was Head of American Decorative Arts and has appeared regularly as an appraiser on PBS’s Antique Roadshow. Margot holds a BA in Art History from Emory University.
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Laura Betrian Waelbroeck
Associate Vice President, Client Relationship Manager
BIOGRAPHY
Laura Betrián Waelbroeck joined Christie’s Chairman’s Office in 2014. As Client Relationship Manager, Laura works to cultivate relationships with Christie’s new and existing clients, providing comprehensive support to collectors across diverse categories. She received her Bachelor of Arts from Columbia University in 2012 and her Master of Studies in the History of Art from Balliol College, Oxford in 2013, where she was a Mica and Ahmet Ertegun Scholar. She is fluent in English and French and proficient in Spanish.
Name:Laura Betrián Waelbroeck
Position:Associate Vice President, Client Relationship Manager
lwaelbroeck@christies.com -
Abigail Bisbee
Associate Client Relationship Manager
BIOGRAPHY
As Associate Client Relationship Manager, Abigail Bisbee supports the needs of Christie’s top clients as they build their collections. Abigail began her career at Christie’s in 2014 as the American Art Sale Coordinator, managing the department’s biannual live and online auctions and providing support with private sale transactions. Abigail attended Georgetown University’s Edmund A. Walsh School of Foreign Service where she majored in Culture and Politics, receiving her Bachelor of Science in Foreign Service. Following her undergraduate career, she earned her Master in Art & Museum Studies, also from Georgetown University and received a certificate in Art and Business from Sotheby’s Institute of Art, London.
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