"Company Name" comes from your configuration for your actual company name.
You can change this globally with an sql patch as follows, being sure to change "Company Name" to your current title component and "Global Keywords" to your desired title component.
Code:
UPDATE wcm_cdseo set cdseoTitle = replace(cdseoTitle,' - Company Name',' - Global Keywords');
You can run sql patches in x-cart admin -> patch/upgrade -> sql patch