I know there have been frequent conversations here, over the years, about finance being a sector in which you should dress on the conservative side. Are you specifically in finance? If so, in your shoes, I wouldn’t wear sneakers. (See what I did there? )
“Competent and assertive”, at this high level, and with media present (I’m certain you’ll have media present). For me, that means something tried and true, that I feel like a million bucks in. I like that dark dress, with the grey blazer, and light-colored, elegant accessories that light up your face. Your best cream or blush or nude or silver or pale gold.
I don’t know where you stand on makeup, but let’s be honest, men are visual creatures, like birds, and I’ve always noticed a little extra mascara and soft lip color can go a long way in getting better manners out of a guy.