
Holly Baxter, Principal
At HBA Art Advisory, we guide discerning collectors through the dynamic landscape of post-war and contemporary art. Based in San Francisco, and backed by over 24 years of expertise, we offer bespoke advisory services designed to elevate and enrich private collections-delivering both aesthetic significance and enduring value.
Founded by Holly Baxter, HBA draws on a profound understanding of the global art market. We advise clients on important acquisitions from leading galleries, auctions, and private collections worldwide. Through an extensive network of artists, collectors, curators, galleries and auction houses, we provide access to rare opportunities and meaningful art experiences.
Whether you’re an experienced collector or just beginning your journey, we offer discretion, insight, and an unwavering commitment to excellence-ensuring your collection reflects your vision, your values and your legacy.
About Holly Baxter
Holly Baxter is the Founder and Principal of HBA Art Advisory and an Executive Member of the Association of Professional Art Advisors. She also serves as Executive Director of the Human Rights Foundation’s international art program, Art in Protest, which supports artists working at the intersection of art and human rights.
Throughout her career, Holly has held leadership positions with numerous influential arts organizations, including serving on the Board of Directors for Gray Area Foundation for the Arts and SF Camerawork, as a SECA Committee member at SFMOMA, and on the National Advisory Board of Artadia.
Previously, Holly conceived, launched, and directed RH Contemporary Art (RHCA), the contemporary art division of RH (NYSE: RH). Under her leadership, RHCA introduced international artists to a global audience through an innovative digital platform, a 28,000-square-foot gallery in New York City, and a prestigious artist residency program in Brooklyn.
Holly’s work reflects a lifelong passion for connecting clients with the most compelling voices in contemporary art. Her approach blends deep market insight with a belief in the cultural power of art to inspire, challenge, and endure.

Marina Goulart, Associate
Marina provides essential support and coordination throughout the art advisory process, specializing in research, exhibition planning, shipping and logistics, insurance, and project operations. With a background in marketing and communications, Marina earned her degree from ESPM (Escola Superior de Propaganda e Marketing) in São Paulo and is currently pursuing her MBA in Design Strategy at California College of the Arts in San Francisco.
Before joining HBA Art Advisory, Marina curated and organized bespoke art travel experiences for VIP patrons, facilitating their attendance at international art fairs and events. She has also collaborated with leading Brazilian galleries on art fair strategies and participation within the United States.
From 2015 to 2018, Marina played a pivotal role as part of the communications team and the partnership and VIP relations team for SP-Arte, the São Paulo International Art Fair. Her diverse experience also includes marketing roles with major corporations and fashion PR for global brands.
Originally from Brazil, Marina has lived and worked in Italy, the United Kingdom, and the United States, bringing a global perspective to her work. Now based in San Francisco, Marina’s passion for exploring new ideas and places informs her innovative approach to supporting HBA’s clients and projects.

Isabella Tunioli, Associate
Isabella plays a key role in the organization and management of art collections for HBA Art Advisory’s clients, with a particular focus on collections management and documentation. She holds a BA in Art History and a minor in Fine Arts from the University of San Francisco, bringing both academic insight and practical expertise to her work.
Her experience in collections management originates from her tenure in the Collections Information department at the Los Angeles County Museum of Art (LACMA), where she meticulously documented artwork and honed her skills in organizing and preserving intricate collection details.
Driven by a passion for safeguarding history and preserving unique assets, Isabella excels at recording and managing the smallest details of each piece. Her commitment to accuracy and organization ensures that every collection HBA oversees is thoughtfully maintained and easily accessible, aligning with museum-level standards.
Based in Los Angeles, Isabella brings a detail-oriented and innovative approach to collections management, ensuring that HBA’s clients enjoy peace of mind knowing their art collections are expertly cared for and documented.