An S-3 covers the shelf registration that lets an established company sell over time, so if you follow IT and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full IT filings page.
Our archive holds no S-3 shelf registrations from Gartner, Inc. over the last 12 months. You will find everything else we hold for the company on the full IT filings page.