This page typically gives background, products and services info as well as location and staff listings. If the company is relatively new, the About Us page can offer reasons why you are different than competitors, why you exist and what you hope to contribute to your industry. If the company has a long background a separate History page can be added. This page usually contains a little more text than the other pages.
Staff information can be in a list or if you are a smaller company you can add photos and short bios of employees. Some companies just highlight the CEO and mention the size of the staff. The layout preference is up to you. This goes for locations as well. Just a list or the whole enchilada.