RDS Business Reference Suite
Choose Corporate Culture, Corporate Identity, Corporate Mission, etc. from the Concept Term drop down menu and fill in your company name.

EBSCOhost
Choose Company Profiles from the top menu bar and search on your company name. These Datamonitor reports often include a discussion of the company's overall direction and "temperament"

ProQuest
Type in your company name, choose Company from drop down list and type in Corporate Culture, choose Subject from the drop down list.

Factiva
If all else fails, try typing in your company name near10 culture.