Our Team



Greg Kastelman 

President & Founder

Greg Kastelman is the founder of Unbound Artists LLC, based in San Francisco. Unbound Artists was founded to be a unique space for thriving artists untethered by convention, engaged with their practice, and connected with their fans and champions. Between 2011 and 2018, he created the contemporary and global divisions of Cadenza Artists. His portfolio of work includes creative producing, consulting, booking, and artist management. His specialized booking work has including US debuts for international artists at festivals including BAM's Next Wave (2015) Jacob's Pillow (2018), and many others. Greg has also launched several journalistic endeavors, and has served on professional committees. He is currently executive producing an album release in January of 2020.


Mariana Sánchez Peregrina

Vice President

Mariana leads marketing and audience development at Unbound. Mariana is an accomplished Global Marketing and Branding expert with a deep passion for the arts, based in the San Francisco Bay Area. Past clients include Fortune 500 companies like 3M, Disney and Heineken. Her strategic problem-solving approach is a mix of design thinking, creativity and data analysis. She was born and raised in San Luis Potosi, Mexico.


David Sepulveda

Business Operations

David leads of Business Operations & Finance at Unbound. He has worked for companies in multiple industries, including Deloitte, Odoo, and Intercom  - in roles ranging from financial planning and analysis, to business process improvement and business analytics. He hails from Monterrey, Mexico.


Dubem Hooks-Abadom

Booking Assistant

Dubem Hooks-Abadom is a multi-disciplinary artist & creative entrepreneur based in New York City. He is passionate about being an artist advocate. As the son of an immigrant from Nigeria, Dubem was born and raised in Oklahoma where his love of community theatre blossomed into opportunities in New York on stage and off in the professional worlds of music and theatre.