Tom Callahan

Callahan Advisors LLC is an independent registered investment advisor headquartered in Houston, Texas. The firm was founded by Thomas Callahan and William Leighton in 1999 as Callahan Leighton & Co. Callahan Advisors provides investment management services to individuals, foundations, trusts, estates, 401-(k) plans and IRAs, charitable organizations, and investment clubs and partnerships.

American Electric Technologies, Inc. provides power delivery solutions to the traditional and renewable energy industries. Its operations include AETI corporate, M&I Electric Brazil, and BOMAY. It provides maintenance installation and repairs in Brazil and offers electrical and instrumentation construction and installation services. The company was founded in 1946 and is headquartered in Bellaire, TX.

PricewaterhouseCoopers LLC provides assurance, tax and advisory services. Its services include audit and assurance, consulting, deals, human resources, legal, tax, and family business. The firm also offers accountability, risk management, structuring, mergers and acquisitions, and performance and process improvement. The company was founded in 1998 and is headquartered in Buffalo, NY.