Wallach Company

1401 17th St. Suite 750 Denver, Colorado 80202 United States Phone: 303-293-2800 Fax: 303-293-3914 Team: Roger H. Bohart, Partner Website: www.wallachco.com Company Type: Venture Capital Firm

Qwest Communications

1801 California Street Denver, Colorado 80202 United States Phone: 303-992-1400 Fax: 303-992-1724 Team: Richard C. Notebaert, Partner Website: www.qwest.com Company Type: Venture Capital Firm

Kinship Venture Management, L.P.

6300 S. Syracuse Way Suite 484 Englewood, Colorado 80111 United States Phone: 303-694-268 Fax: 303-694-1707 Team: Michael I. Block, Partner Company Type: Venture Capital Firm

Telecom Partners LLC

4600 South Syracuse Street Suite 1000 Denver, Colorado 80237 United States Phone: 303-874-1100 Fax: 303-874-1110 Team: Mark D. Adolph, Partner Website: www.telecompartners.com Company Type: Venture Capital Firm

Oppenheimer Funds

PO Box 5270 Denver, Colorado 80217 United States Phone: 888-470-862 Fax: 212-323-793 Team: John V. Murphy, Partner Website: www.oppenheimerfunds.com Company Type: Venture Capital Firm

Newman & Associates

1801 California St. Suite 3700 Denver, Colorado 80202 United States Phone: 303-293-8500 Fax: 303-296-6804 Team: John Bado, Partner Website: www.newmanfs.com Company Type: Venture Capital Firm

Livingston Capital Ltd.

106 S. University Blvd.,#14 Denver, Colorado 80209 United States Phone: 303-722-4008 Fax: 303-722-4011 Team: Jeff McGonegal, Partner Company Type: Venture Capital Firm

Access Venture Partners

8787 Turnpike Drive Suite 260 Westminster, Colorado 80030 United States Phone: 415-586-132 Fax: 303-426-8828 Team: Jay Campion, Partner Website: www.accessventurepartners.com Company Type: Venture Capital Firm

Venture Associates Ltd.

4950 E. Evans Suite 105 Denver, Colorado 80222-5209 United States Phone: 303-758-8710 Fax: 303-758-8747 Team: James B. Arkebauer, Partner Website: www.venturea.com Company Type: Venture Capital Firm

Stolberg Equity Partners LLC

370 17th Street Suite 3650 Denver, Colorado 80202 United States Phone: 303-592-4900 Fax: 303-592-4912 Team: James Lindstrom, Partner Website: www.stolbergep.com Company Type: Venture Capital Firm

CHB Capital Partners

511 16th St. Suite 600 Denver, Colorado 80202 United States Phone: 303-571-100 Fax: 303-571-114 Team: Grant P. Clayton, Partner Website: www.chbcapital.com Company Type: Venture Capital Firm

Grayson & Associates Inc.

One Tabor Center 1200 17th St. Suite 1600 Denver, Colorado 80202 United States Phone: 303-628-3490 Fax: 303-628-3440 Team: Gerald Grayson, Partner Website: www.grayson-assoc.com Company Type: Venture Capital Firm

Transition Partners Ltd.

1942 Broadway Suite 303 Boulder, Colorado 80302 United States Phone: 303-938-6834 Fax: 303-938-6850 Team: Gene Copeland, Partner Website: www.transitionpartnersltd.com Company Type: Venture Capital Firm

The Hamilton Companies

1560 Broadway Suite 2200 Denver, Colorado 80202 United States Phone: 303-863-3015 Fax: 303-863-3022 Team: Frederic C. Hamilton, Partner Website: www.hamiltoncompanies.com Company Type: Venture Capital Firm

Vista Ventures

11001 West 120th Suite 310 Broomfield, Colorado 80021 United States Phone: 303-410-2537 Fax: 303-466-9316 Team: Dave Dwyer, Partner Website: www.vistavc.com Company Type: Venture Capital Firm

NewWest Mezzanine Fund, L.P.

1700 Lincoln St. Suite 2000 Denver, Colorado 80203 United States Phone: 303-764-9677 Fax: 303-832-6154 Team: Daniel Arenberg, Partner Website: www.mezzcap.com Company Type: Venture Capital Firm