S. Douglas Sheldon

Founded by in 2005 by Howard Weisman, S. Douglas Sheldon and Dr. Jeffery Z. Li, ESP Equity Partners (ESP) is a private equity firm located in Cedar Knolls, New Jersey with additional offices in Miami and Beijing.

Sofregen Medical, Inc. develops innovative silk-based solutions for soft tissue defects. Its products: SERI silk derived surgical scaffold is knitted scaffold made from ultra-pure, sterile, silk-derived bioprotein that facilitates neovascularization and native tissue regeneration over time and Sofregen technology a silk derived material for medical application. The company was founded by Anh Hoang and Howard J. Weisman on May 19, 2014 and is headquartered in Cambridge, MA.

EKR Therapeutics, Inc. is a specialty pharmaceutical company focused on acquiring, developing and maximizing the potential utility of critical-care hospital products offering broader therapeutic options and greater control to improve in-patient care, speed recovery, and achieve optimal outcomes. Backed by the strength of its award winning management team, the dedication of its field force of product specialists and its commitment to excellence in customer service and medical education, EKR has been organized to be a class leader in commercializing products to address unmet and under-satisfied medical needs or to otherwise enhance the therapeutic value of acute-care products.

ESP Pharma, Inc. produces pharmaceutical products. The company used to produce drug for acute-care hospital use and these drugs include therapeutics for high blood pressure and angina; one product, IV Busulfex, is used to prepare myelogenous for leukemia patients for bone marrow transplants. The company formulates its products to be delivered intravenously or by injection when oral administration is impossible. The company was founded in April, 2002 and was headquartered in Edison, NJ