Peter Vrettakos

Allen & Co., Inc. engages in private placement, underwriting and brokerage services to entertainment and media companies. The company is headquartered in New York, NY.

US Ecology Holdings, Inc. engages in the provision of industrial waste management and recycling services to commercial and government entities, including refineries and chemical production facilities, manufacturers, electric utilities, steel mills, medical and academic institutions, and waste brokers. It operates through the Environmental Services, and Field and Industrial Services segments. The Environmental Service segment provides a range of hazardous material management services including the transportation, recycling, treatment, and disposal of hazardous and non-hazardous waste at company-owned landfills, wastewater, and other treatment facilities. The Field and Industrial Services segment offers packaging and collection of hazardous waste and total waste management solutions at customer sites and through its 10-day storage facilities. The company was founded in 1952 and is headquartered in Boise, ID.

Part of IT Group, Inc., OHM Corp. is a full-service electrical engineering corporation that provides maintenance, modernization, and expansion design services to industrial, commercial, and government clients. The company is based in Findlay, OH. The company delivers expert engineering and design solutions on time and within budget, with direct communication between clients and top engineers during all project phases. OHM has been in business since 1986 and offers forensic electrical engineering investigations and expert witness services to the insurance and legal community. OHM was acquired by International Technologies Corp. on June 11, 1998 for $162.93 million.

Shell Oil Co. manufactures petrochemicals and distributes gas and oil products. The company was founded in 1912 and is headquartered in Houston, TX.

Texaco, Inc. explores and produces oil and natural gas. It engages in the worldwide exploration, production and marketing of crude oil, natural gas, and petroleum products. The company was founded in 1902 and is headquartered in San Ramon, CA.

NSC Corp. provides asbestos abatement and other specialty contracting services. It provides lead paint abatement, indoor air quality and industrial services to industrial and institutional clients located throughout the United States. The company is headquartered in Methuen, MA

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.

Brace Industrial Group, Inc. provides scaffolding, insulation, painting, coating and fire-proofing services to a variety of industrial clients. The firm serves the energy, petrochemical, manufacturing and agricultural sectors. It offers a compelling value proposition that combines proprietary equipment and services. The company was founded in 2013 and is headquartered in Houston, TX.

Sterling Fund Management LLC (Sterling Partners) is a Private Equity firm founded in 1983 by Eric Becker, Michael Bronfein, Shoshana M. Vernick, Jeff Elburn. The firm is headquartered in Chicago, Illinois.

Cornerstone Records Management LLC engages in the provision of data storage and information management solutions. It offers document storage, shredding services, medical release of information, document imaging, data protection, and offsite storage. The company was founded in 2008 and is headquartered in Elkridge, MD.

GTCR LLC (GTCR) is a private equity firm founded in 1980 by Charlie Thomas. The firm is headquartered in Chicago, Illinois.

Desert NDT LLC engages in provision of non-destructive testing, inspections, and data management services for pipelines, plants, fabrication and midstream infrastructure. It offers automated ultrasonic testing, real-time radiography, X-ray crawlers, conventional gamma radiography, ultrasonic testing, magnetic particle testing, liquid penetrant testing, API inspections, specialty inspections, and radiography inspection equipment for small- and large-diameter pipes. The company was founded on January 27, 2012 and is headquartered in Houston, TX.

Chem-Nuclear Systems LLC operates as a commercial low-level radioactive waste disposal services. It receives and disposes radioactive waste from generators, brokers and processors. The company was founded in 1971 and is headquartered in Columbia, SC.

GEM Mobile Treatment Services, Inc. provides wastewater treatment services. It specializes in the treatment of water and air, in-house engineers and scientists apply vapor control technologies to operations, such as tank degassing, using vapor combustion, liquid scrubbing, or carbon absorption for emissions control. The company was founded in 1994 and is headquartered in Signal Hill, CA.

Alvarez & Marsal LLC provides debtor management and advisory services. It offers turnaround management consulting, crisis and interim management, performance improvement, creditor advisory, financial advisory, and business consulting services. The company was founded by Tony Alvarez II and Bryan Marsal in 1983 and is headquartered in New York. NY.

Optimal Strategix Group, Inc. provides marketing strategy consulting, analytics, and customized research services. It offers litigation support services. The company was founded by R. Sukumar in 2008 and is headquartered in Newtown, PA.

Saudi Aramco Mobil Refinery Co. Ltd. develops, constructs, owns and operates crude oil refining facilities in Yanbu, Saudi Arabia. Its purpose of the refinery is to export finished products to Europe, North America and Far East within the framework of broad-based strategy for an integrated petroleum industry. The company was founded in November, 1984 and is headquartered in Yanbu Al-Sinaiyah, Saudi Arabia

University of Houston System offers higher education degrees and job training or vocational study programs. It offers about 280 undergraduate and graduate degree programs in fields such as business, education, humanities and law. It was founded in 1927 and is headquartered in Houston, TX.

Envoy Global, Inc. provides online immigration and visa application process services. Its patented online process guarantees fast response times, easy access to case information and comprehensive customer support. The firm offers business immigration services that include work visas, permits and permanent resident assistance, and employment compliance; online visa process services for human resource (HR) and employees; corporate immigration and Form I-9 compliance services; and travel, work, and family visas for individuals. The company was founded by Robert C. Meltzer in 1998 and is headquartered in Chicago, IL.

Atlantic Industrial, Inc. provides outsourced scaffolding services. It serves refineries, chemical producers, power generation facilities and other industries. The company is headquartered in Columbia, MD.