Can a company change what is promised in a hiring contract?

"Are offered" does not mean "will be" offered. Putting that together with the fact that no amount or formula to determine an amount is given, and it appears that the contract is advising employees of a potential benefit they may receive, not creating a contractual committment requiring the options to be given. The lack of imperative or mandatory language, as well as the lack of any of the details that would be necessary to actually enforce a requirment for options, lead to this result. Companies often describe benefits that may or would like to give, without binding themselves to providing them.