You cannot edit the company profiles created by JobTeaser's partners.
However, you can complete these profiles by adding a custom message that will only be visible to your users. You may highlight a specific contact, give additional information, give the contact information of your alumni working at this company, etc.
(1) Custom Messages: here you can find the list of all company profiles that already have a custom message
(2) Custom messages tag: a "Custom message" tag is affixed below the company page name, allowing you to quickly identify which companies have a custom message
To add a custom message, open the company profile by clicking on it and click on "Edit".
Add your custom message on the appropriate section and save by clicking on "Update this company".