Paula L. Rosson

Fischer Imaging Corp. engages in the design, manufacture, and sale of mammography and digital imaging products used to diagnose breast cancer and other diseases. It offers digital imaging systems and other medical devices that help radiologists, surgeons, and other healthcare professionals in screening, diagnostic, and interventional procedures. It also provides SenoScan digital mammography system that is used for both screening and diagnostic mammography and MammoTest stereotactic breast biopsy system, which is used for minimally invasive breast biopsy. Fischer Imaging was founded by Morgan W. Nields in 1910 and is headquartered in Denver, CO.

Ernst & Young LLP engages in the provision of accounting, assurance, tax, transaction, and advisory services. It specializes in the actuarial, analytics and big data, cyber security, accounting compliance and reporting, center for board matters, international financial reporting standards, country tax advisory, global trade, tax accounting, and climate change and sustainability. The company was founded in 1989 and is headquartered in New York, NY.

MarkWest Energy Partners LP engages in the business of gathering, processing and transportation of natural gas; the transportation, fractionation, storage and marketing of natural gas liquids; and the gathering and transportation of crude oil. It operates through four segments: Marcellus, Utica, Northeast and Southwest. The Southwest segment includes the operations of processing facilities in Corpus Christi, Texas. The Northeast segment assets include the Kenova, Boldman, Cobb, Kermit and the Langley natural gas processing complexes, NGL pipeline and Siloam NGL fractionation facility. The Marcellus segment includes gathering, processing and fractionation infrastructure in the liquids-rich area of the Marcellus Shale The Utica segment provides fractionation services. The company was founded in January 2002 and is headquartered in Denver, CO.

Part of Marathon Petroleum Corp., MarkWest Energy GP LLC is a private company that provides oil and gas field services not elsewhere classified. The company is based in Englewood, CO. The company was founded by John C. Mollenkopf.

Cenveo Corp. provided printing, publishing, and graphic art services. It was engaged in printing envelopes, business forms, and labels. The company was founded on February 17, 1994 and was headquartered in Stamford, CT.

MPLX GP LLC owns, operates, develops and acquires pipelines for petroleum and energy industries. The company is headquartered in Findlay, OH.