Company
The facts about the company that everything else references.

Incorporation, jurisdiction, authorised shares, fiscal year, and the qualifications held in each state where you operate. These are the answers to the first ten questions of any diligence.
Recorded once with the documents behind them, they are retrievable rather than reconstructed.
Where everything sits

How to work this page
State, date, entity type and the filed document. It is the first item in every diligence list.
Issuing beyond authorised is void. Every increase is a charter amendment with a board and stockholder approval behind it.
Employees or an office in a state usually requires foreign qualification there. Operating without it carries penalties and can bar you from that state's courts.
Service of process goes there. A lapsed agent means a lawsuit you learn about after a default judgment.
On a phone

Every figure from the desktop appears here, stacked rather than reduced. Tables scroll inside themselves so the page never moves sideways, and figures keep their separators and their alignment at every width.
Questions people actually ask
Selling alone usually does not require it. Employees, an office or property usually does. It is a different test from tax nexus and both are tracked.
Increasing authorised shares, creating a new class, or changing the name. Each needs approvals recorded in the board pages.