payments.wikimedia.org is the only domain I am aware of at Wikimedia that uses an EV cert (it was mentioned in T155806 among other places), and based on SAL Archive 19 it's been there for 7 years. It's also expiring relatively soon, on the 25th October. Per [[ https://www.troyhunt.com/extended-validation-certificates-are-dead/ | this post ]], the value of such certificates is now more in question than ever so I'm thinking that (instead of someone immediately just going and getting a renewal) it may be worth re-evaluating whether it's worth the foundation continuing to spend (presumably) extra money on this - I don't know if that would necessarily mean getting an OV cert like the rest of the fundraising domains, or considering setting up for Let's Encrypt certs or getting some commercial DV cert.
(I noticed the main page was redirecting me away to donate.wm.o so I did some digging and found that it actually hosts a MediaWiki install: https://payments.wikimedia.org/index.php/Special:SpecialPages)