August 1, 2025
We are proud to announce the launch of Bostwick Investment Consulting — a firm built on experience, trust, and the conviction that discerning investors deserve a true partner. Our co-founders, Kathleen Vogelsang, CFA, and Quan Mac have nearly 60 years of combined investment experience in family offices, institutional asset management, and high-net-worth investing. Most recently, Quan served as Chief Executive Officer and Chief Investment Officer at Greenville Asset Management. Kathleen is currently Chief Investment Officer of the Van Andel Institute and will be retiring at the end of this year after 20 years as its Chief Investment Officer. She will be joining Quan at Bostwick in January 2026. They both started and managed complex, multi-asset class portfolios sourced through their deep network of access-constrained private and traditional investment managers.
Bostwick is united by a shared belief that the future of wealth stewardship requires more than financial acumen. It calls for integrity and independent judgment free from product or platform influence. Bostwick’s mission is to collaborate with and advise its clients on making complex investment decisions in a dynamic and challenging macroenvironment. Our approach is rooted in collaboration, delivering advice marked by transparency and confidentiality. Our ability to source top-quartile and often oversubscribed investment managers has been pivotal to our attractive risk-adjusted track records. This commitment to prudent decision-making extends beyond our investment philosophy and is imbued in our active engagement in philanthropic and community leadership.
— Kathleen Vogelsang, CFA & Quan H. Mac, Co-Founders and Co-CEOs & CIOs
