Donald J. Jenkins

Main Street Capital Holdings LLC (Main Street Capital) is a private equity firm founded in 1994. The firm is headquartered in Pittsburgh, Pennsylvania.

Nabco Systems LLC designs, develops and manufactures explosive containment vessels. Its products include total containment vessels, self-closing total containment vessels and NABCO treatment system. The company was founded by Jay Markey in 1986 and is headquartered in Canonsburg, PA.

St. Clair Hospital is a 329-bed independent, acute care facility that provides advanced, high quality healthcare to more than 300,000 residents of southwestern Pennsylvania with 525 physicians. The Hospital offers a comprehensive array of inpatient and outpatient services, including advanced cardiovascular services, specialized care for women, children and infants, diabetes treatment, oncology services, emergency care, general surgery services, behavioral health services, and pulmonary care. With the firm's main campus in Mt. Lebanon, the Hospital offers healthcare services at three outpatient centers, including a diagnostic center located in Bethel Park

ACES I LLC provides electronic manufacturing services to aerospace, defense, industrial controls, and transport sectors. It offers design for manufacturability and testability, prototype and production circuit board assembly, material procurement and control, manufacturing and test engineering support, complete box-build, and final product packaging and logistics. The company was founded by Ernest D. Carlson in 1989 and is headquartered in Erie, PA.

LTS Scale Corp. designs and manufactures precision mobile scales & weighing systems. It engages in providing scales and weighing systems which are specifically designed for applications in industries like transportation, shipping, printing and foundry industries. The company was founded by Ken Filing in 1994 and is headquartered in Twinsburg, OH.

Sajar Plastics LLC provides injection molded products and molding services for equipment manufacturing markets specializing in cosmetic panels and accessories. The company was founded in 1949 and is headquartered in Middlefield, OH.

Conelec of Florida LLC provides printed circuit board and electronic systems assembly services. It offers engineering, new product introduction, supply chain services, prototype services, and test services. The company was founded in 2011 and is headquartered in Deland, FL.