Does not strike me as copacetic as well. There is a reason that he will not divulge terms. The logical reason is that the ER owner struck a deal which had a benefit to him that did not extend to the non-executives.
At some point, in all likelihood, if the land is to be pooled, you will need to ratify the lease for pooling. Certainly at that point, you could clearly see what you are being asked to ratify.
Are you a non-executive, but are able to receive bonus? Or are you a NPRI, and only share in the royalty?
There is more than one copy of the lease. The oil company has one. If you have a land sale contract, contact the oil company with a certified copy of the contract that stipulates your entitlement to same. That is another potential way to skin the cat.
The brokerage who bought the lease has a copy, too. Check to see where the lease was returned to or filed by or something to lead you to the landman. He might show you the file, since you are part of title. I would.
Your other recourse is to file suit.