
For over 40 years, we’ve invested in people, partnerships, and opportunity

A family office built on trust
Penrose is a private single-family office shaped by generations of leadership, enduring partnerships, and a deep commitment to the people and communities connected to its work. Inspired by Billy Rosenthal’s vision and carried forward by a close-knit family and leadership team united by shared purpose, it invests with curiosity, judgment, and care.
PRINCIPLES THAT GUIDE US
We value kindness and guidance just as much as trust. Our approach is grounded in thoughtful communication and a commitment to investing with integrity through a long-term lens.





Rooted in experience
Decades spent building businesses and leading through change have shaped the perspective behind Penrose. From food manufacturing and protein production to investing and philanthropy, the common thread has remained consistent: the power of relationships, thoughtful stewardship, and long-term thinking.