Friedrich,
Adding the "/pa" option to the "Signtool verify" command did allow my setup program to be successfully verified. Thanks for that link.
But, there must still be something I am overlooking in order to get a company name to appear under the product name on the add/remove programs window.
I notice that "SetupBuilder 10 Developer" does not appear with a company either, on my computer. Here's a screenshot of it:
https://drive.google.com/file/d/1_al...ew?usp=sharing
--Rich