Sterling Atlantic Partners

Sterling Atlantic Partners

Sterling Atlantic Partners operates as a multi-family office based in Calabasas. Michael Lowinger established the firm and also leads Geneva Street Partners. The Lowinger family maintains involvement through Mark Lowinger as partner and Cynthia Lowinger as principal. The firm focuses on direct co-investments and private equity structures. Asset classes span AI/ML, cybersecurity, biotech, enterprise software, and advanced materials. Confirmed positions include Oakleaf Software, a supply chain platform, Omni InfoSec for nation-state network security, StageZero Life Sciences in cancer screening, FYI Resources in high-purity alumina, and Veganz in food technology. Activity covers North America, Europe, and Oceania. Team size and total deployment remain undisclosed. The firm maintains the Michael and Cynthia Lowinger Family Foundation. Michael Lowinger serves on boards including Milken Community School and the Jewish Federation of Greater Los Angeles. The structure centers on a founder-led model that pairs family principals with external partners such as Mark Macedo. This setup supports ongoing co-investment activity without reliance on external fund vehicles.