Bloomberg Law Business Intelligence Center (Temple Law access)
BLaw's Business Intelligence Center collects companies' financials, management profiles, family trees, firms most used for litigation, filings, and more.
Hoover’s Company Records (Temple Law access via Lexis)
Hoover's In-Depth Records database lists executives and gives a company description and history, current and historical sales, and more. The link above is for the Hoover's database in Lexis.
Business Insights: Global (Temple University access)
Business Insights Global allows searching by industry or company name. It has in-depth company information, including history, financials, and news.
Mergent Online (Temple University access)
Mergent's company profiles include key financials, company news and events, annual reports, filings, and competitors. Mergent also has an executives search option.
S&P NetAdvantage (Temple University access)
Also known as Capital IQ, this database contains detailed company information, including key professionals, financials, filings, and news.
SEC Edgar Database (open access; also available on Lexis, under Company & Financial/All SEC Filings)
Edgar is a searchable database of forms public companies are required to file with the US Securities and Exchange Commission. Form 10-Ks (filed annually) are the most comprehensive, including information on finances, management, and outlook; Form 10-K's Exhibit 21 lists significant subsidiaries. Form 10-Qs (filed for each of the first three quarters of the year) give quarterly financial information,and Form 8-Ks report major corporate events.
Don't forget to check the company website and social media, and run a news search.