Re: Laminate your form 4?
Funny thing, when I got my first stamp years ago, I called BATEF and asked them this very question. They told me then to make copies and laminate the original and leave it in a safe place. I did so. I have made copies recently from my laminated originals with no problem, and there is no degradation in the originals nor the copies. I think it's prob. personal preference as to whether or not to laminate the originals, but that process usually prevents degradation of the document. If anything did arise, while you can not get another stamp, you can get copies of those originals from BATFE - although it may well be a PITA to do so.
But then, that's just my opinion, for which you paid nothing, and may well get exactly what you paid for!