Data Domain Inc.

Santa Clara, Calif. • 408-980-4800 • www.datadomain.com

Ticker and Exchange: DDUP: Nasdaq

Filing Range: 7.0M shares @ $11.50 to $13.50

Offering Price: $15.00

Close on First Day: $24.95

Offering Size: $110.90M

Shares Outstanding: 51,772,816

Underwriter: Goldman Sachs & Co./ Morgan Stanley

Co-manager: Thomas Weisel Partners LLC/ Pacific Crest Securities Inc.

Company Counsel: Gunderson Dettmer Stough Villeneuve Franklin & Hachi

Manager Counsel: Sullivan & Cromwell

Auditor: Ernst & Young LLP

Market Capitalization on 6/30/07: $1190.77M

Close price at current month end: $23.00

DESCRIPTION

Develops Enterprise Protection Storage systems for disk backup and network-based disaster recovery. The company’s products and solutions integrate existing infrastructure and are compatible with all leading enterprise backup software products. Competitors include Network Appliance, Compaq/HP, SANworks, Sun Microsystems Inc., EMC Corp. Hewlett-Packard and IBM.

VENTURE BACKERS

Greylock Partners, HRJ Capital, New Enterprise Associates and Sutter Hill Ventures.

Source: Thomson Financial