Some users as I have notice, will probably interested to show all company name, not only part, which was located at the first name. Maybe you may enable usernames to be shown at the board.
There is one more suggestion, to be different from nopCommerce. As you may see, there is one main account for company. What about adding another accounts (associate users upon one company name) to one? For example, if will hire new emploee I do not want to share access with my account - I may associate him with my company, so company will be shown at his account. Ideally would be to show under username or avatar.