Cassandra Seidenfeld is a woman of many talents, but two things that truly stand out are her passion for sports and her deep commitment to philanthropy. She doesn’t just chase excellence—she lives it in every arena she steps into, whether it’s a competition ring or a charity boardroom.
Cassandra’s love for athletics isn’t just a hobby—it’s part of her identity. She is a competitive equestrian in the Hunter-Jumper Divisions, showing both courage and elegance in every ride. Her commitment to the sport reflects discipline, focus, and a relentless desire to improve—traits that shine in everything she does.
But that’s just one side of her athletic spirit. Cassandra is also an avid golfer, a court tennis player, and enjoys volleyball and traditional tennis. Her love for sports goes beyond competition—it’s about pushing limits, staying sharp, and finding joy in movement.
Her involvement in athletic circles also includes a 20-year sponsorship of the Hampton Classic Horse Show, one of the most prestigious equestrian events in the U.S. Cassandra’s presence in such events isn’t just about prestige—it’s a reflection of her deep respect for the sport and the community that surrounds it.
A Heart for Humanity: Leading with Compassion
As active as she is on the field, Cassandra’s presence is just as strong in the world of philanthropy. She believes deeply that giving back is a privilege – and she walks that belief every day.
Cassandra has organized and supported numerous charitable events in New York City and the Hamptons. Her work touches many causes, but one that stands out is her fight against human trafficking. For her efforts, she was honored with the Women4Empowerment Gold Medal of Honor in 2016.
She holds leadership roles in several impactful organizations. She is the Global Ambassador and Board Member of Women4Empowerment, a National Board Member of the Sphinx Organization, and is also involved with Fashion4Development and The Women’s Project. Each role allows her to support women, arts, education, and global equity.
Blending Power with Purpose
Cassandra Seidenfeld is not just a name but a legacy in motion. Her ability to blend athletic discipline with heartfelt philanthropy sets her apart as a true changemaker. With every stride in the arena and every act of service in the community, she redefines what it means to lead with purpose. Cassandra’s story is a powerful reminder that real success lies not just in personal wins—but in lifting others as you rise.
