Comment by striking

First off, it's now a redirect https://en.m.wikipedia.org/w/index.php?title=Rosemont_Seneca...

Second, the article links to the archived comments about the deletion (https://en.m.wikipedia.org/wiki/Wikipedia:Articles_for_delet...), wherein an editor explains

> This organization is only mentioned in connection with its famous founders, Hunter Biden and Christopher Heinz, from whom it cannot inherit notability per WP:NORG. Every single source is a trivial mention in an article about the founders; that means it fails WP:GNG as well. Keeping it around additionally risks WP:BLPVIO, as this is a magnet for conspiracy theories about Hunter Biden.

Seems pretty clear cut to me. Write the parts that deserve to be in the Hunter Biden page in the Hunter Biden page. Don't make a stub article just so you can mention an otherwise unnotable company.