As you describe under DE law, I’ve generally seen the authorized share count adjusted proportionally lower with the R/S. But then when I thought about it some more, in my experience that wasn’t true on every case.
Figures it’s a function of state law.
(Have to go back over the listing requirements. There might be an easier path forward.)
Interesting ZACKs is saying the exact opposite- The number of authorized shares is untouched by a reverse split. (See Link below.) Hard to imagine Zacks would get this wrong, being more than 1/2 of the companies on the NYSE are incorporated in Delaware.