Weis Group

Weis Group, Inc., led by Adam Weis, is a private investment group with significant activity in biotechnology and pharmaceuticals. The group provided personal seed capital for Merrimack Pharmaceuticals—an oncology-focused biotech that later went public on NASDAQ—and has invested in other healthcare technologies and medical devices. The firm also invests across real estate, renewable energy, litigation finance, e-commerce, health clubs, restaurants/nightclubs, alternative assets and more. In healthcare/life sciences specifically: the group acts primarily as an early-stage or opportunistic investor rather than a product/platform developer or operator.