Pros
Chances are if you're reading this then your company was probably acquired by OpenText. If you survive the acquisition 101 play book of blow out the sales team, freeze new hires, and trim the departments down then you should be fairly safe. They like to buy companies like toys on the shelf. It's new and shiny and they'll play with it for a little bit then forget about it.
Cons
The CEO and benefits. The CEO will constantly send out company wide emails talking down his nose at everyone. He feels a constant need to weigh in on social issues and news headlines that absolutely no one asked for. Like we would be so lost without his thoughts and guidance. It is very polarizing and unnecessary. There will also be emails about awesome quarterly results with a word salad of corporate buzzwords about how great the profits were and how driven the company is but never any word about how it's due to the success of the employees or how it can be shared with them. Also once your company has been bought, rebranded, and forgotten about good luck getting new hires in quickly or getting good investment in the department. It's almost guaranteed the benefits will be worse then what you had before. 1% 401k match and very expensive insurance premiums with sky high deductibles.