# 42 North Partners 42 North Partners is a Single Family Office based in Grand Rapids, United States. ## Overview - **Organization type:** Single Family Office - **Headquarters:** Grand Rapids, United States - **Region:** North America - **Address:** 171 Monroe Avenue NW, Suite 410, Grand Rapids, MI 49503, United States - **Assets under management:** Undisclosed - **Website:** 42northpartners.com ## Regulatory record - **Reports private funds:** No ## About Michael Jandernoa, former CEO and Chairman of Perrigo Company, established 42 North Partners as a single-family office based in Grand Rapids, Michigan. The wealth trace originates from Jandernoa's executive leadership at Perrigo, a global pharmaceutical manufacturer that became one of Michigan's largest public companies under his tenure. ## Sectors - Mixed-Use Real Estate - Commercial Real Estate - Philanthropy ## People - Michael Jandernoa — Founder - Susan Jandernoa — Co-founder - Carl Jandernoa — Partner - Rob Jandernoa — Partner - Steve Jandernoa — Partner ## Questions ### Who runs investment decisions at 42 North Partners? Carl Jandernoa, a family member and partner, leads investment activities for 42 North Partners. The investment mandate is managed by the family partnership, with Michael Jandernoa serving as founder. ### Is 42 North Partners structured as a single family office or does it operate more like a venture firm? 42 North Partners is structured as a single-family office with a partnership model, dividing responsibilities among family members. It does not operate as a registered investment adviser or fund, and its activities remain concentrated on direct investments rather than third-party capital. ### What investment stages does 42 North Partners typically target? The firm focuses on direct real estate development and operating assets rather than venture capital or growth equity. Studio Park represents a ground-up mixed-use development, not a passive financial investment. ### Which sectors does 42 North Partners explicitly avoid? There is no public statement on excluded sectors. However, based on observed activity, the firm does not appear to invest in public equities, hedge funds, or private equity fund commitments. ### Does 42 North Partners maintain philanthropic structures, and how are they separated? Yes, the Michael and Susan Jandernoa Foundation is a separate philanthropic entity distinct from 42 North Partners. The foundation, co-founded by Susan Jandernoa, handles charitable giving, while 42 North Partners focuses on investment and business activities. ### How is 42 North Partners related to Perrigo Company? 42 North Partners is not an operating entity of Perrigo. The wealth managed by the family office originates from Michael Jandernoa's tenure as CEO and Chairman of Perrigo, but the family office is a separate private entity. ## Related profiles - [3K Limited Partnership](https://altss.com/profile/3klimitedpartnership) - [980 Investments](https://altss.com/profile/980investments) --- Last updated: 2026-06-03T20:00:00.000Z Canonical page: https://altss.com/profile/42northpartnersjandernoafamilyoffice Maintained by Altss — https://altss.com — methodology: https://altss.com/methodology