In the UK you can find names and a contact address in companies house e.g.

https://find-and-update.company-information.service.gov.uk/c...

Not sure what the US or other equivalent is.

They can often be found with a web search, there are some websites that catalog them.

It looks like HPE has a form to contact the executive team as well, which is worth a shot.

https://h41388.www4.hpe.com/contact/connect-with-hpe.html