I wouldn't recommend this as global keywords should be put last as they are less relevant to the specific page.
You can accomplish this however, by:
1) Backup your database, these queries haven't been tested live and I take no accountability!
2) Run a query to remove the Company Name:
Code:
UPDATE wcm_cdseo set cdseoTitle = replace(cdseoTitle,' - Company Name','');
3) Run a query to add to the front of the title:
Code:
UPDATE `wcm_cdseo` SET `cdseoTitle` = CONCAT('Company Name - ',cdseoTitle);