Please click on the tombstones below for more information about various investments.

April 2004

H.D. Griffin Company is a mid-west based domestic energy services company established in 1971. The Company provides operation & maintenance services on a wide variety of natural gas, chemical and liquid pipelines of varying sizes in order to ensure pipeline integrity. In addition to O&M services, we also provide installation and construction services of main, lateral and local distribution lines. More information regarding H.D. Griffin Company can be found at www.hdgriffin.com.

May 2004

VIRxSYS is a private biotechnology company that focuses on the development of a novel lentiviral vector platform technology for the treatment of serious diseases such as HIV/AIDS and cancer. More information regarding VIRxSYS can be found at www.virxsys.com.

October 2005

Griffin Pipeline Services LLC is a pipeline maintenance contractor serving pipeline operators primarily east of the Mississippi. GPS is a union contractor and a member of the Pipe Line Contractors Association (PLCA).

June 2006

TGCs Energy Services LLC is a professional management firm specializing in energy infrastructure projects with an emphasis on pipeline project services. Based in Houston, Texas, the principals of the firm have been employed by key pipeline operators in the industry and boast a collective experience of over 100 years. The principals of the firm have significant experience in the development, implementation, and completion of interstate natural gas transmission facilities. More information regarding TGCs Energy Services can be found at www.tgcsenergy.com.

November 2006

Midwest Pipeline Services, Inc. is a supplier of labor and equipment for pipeline maintenance and construction projects throughout the upper midwest. Services include casing extensions and removals, excavation, fabrication, farm tap installation and removal, hot taps, hydrostatic testing, leak repairs, line lowering, sleeving, valve installation, removal and replacement, corrosion repair, pipeline inspection and repair, right-of-way clearing and brushing and sandblasting and painting.

November 2006

Foltz Welding, Ltd. provides mainline installation, pipeline rehabilitation, station construction and hydrostatic testing. More information regarding Foltz Welding, Ltd. can be found at www.foltzwelding.com.

March 2007

Tango Networks, Inc. designs, manufactures, and markets an innovative, proprietary, sophisticated, high performance software/server system that provides a cost effective and transparent means to connect enterprise employees’ cellular phones to their corporation’s PBX. More information regarding Tango Networks can be found at www.tango-networks.com.

March 2007

AOK Construction and its affiliates currently provide installation of gathering lines and other related services to oil and gas exploration and production companies as well as maintenance and installation services to the pipeline industry in the Southwestern region of the US. Its primary operations are in Texas, Oklahoma, Kansas, Arkansas, Colorado and New Mexico, with focus on gas plays in areas such as the Barnett, Fayetteville, and Arkoma basins.

March 2007

Zounds, Inc. designs, manufactures, and markets high performance hearing aids for use with mild, moderate, and moderate/severe hearing impairments. The Company’s technology enables breakthroughs in product functionality/performance, price/performance, purchase process/distribution channels, and marketing.

March 2007

Spectrum is an English speaking radio station based in Spain.

Boss Group 5847 San Felipe, Suite 1700 Houston, TX 77057 Phone: (713) 960-5000 Fax: (832) 201-9236 Email: aboss@bossgroup.com

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