How to use OR in IF, ELSE, THEN Condition - VB.Net

Trying to write a IF, ELSE, THEN statement with a few conditions. Below is my vb.net code:

If AdvisoryFirms.AdvisoryFirmNameTextBox.Text <> "Egan Jones" Or _        AdvisoryFirms.AdvisoryFirmNameTextBox.Text <> "Farient Advisors" Or _        AdvisoryFirms.AdvisoryFirmNameTextBox.Text <> "Glass Lewis" Or _        AdvisoryFirms.AdvisoryFirmNameTextBox.Text <> "Internal Guidelines" Or _        AdvisoryFirms.AdvisoryFirmNameTextBox.Text <> "ISS" Or _        AdvisoryFirms.AdvisoryFirmNameTextBox.Text <> "None" Then            RunSql("insert into institution_has_policy (institution_id,policy_id) values ("& _                    InstitutionID & ","& NewPolicyID & ")")End if

Basically, I am trying to tell the program that if AdvisoryFirmNameTextBox does not equal to any of the names listed in the condition, then go ahead and save the new information into the Institution_has_Policy table.

However, every time I run it, it runs the FIRST IF condition, but skips the other 5.

Can anyone help?