You can bulk invite users to your company profile simply by copy-pasting an email list from for example Excel or Google Sheets.
If you invite users who already have an account, the system will skip them.
How to import users from Excel or Google Sheets
1. Go to your Excel or Google Sheets document.
2. Select the column of the emails of users you want to invite to your profile.
3. Copy all the emails.
4. Go to your company profile > settings > connections.
5. Click "Invite your connections".
6. Choose the role you want to give.
7. Paste your copied emails to the text box.
Note: You can only invite 500 users at the same go.