Link does not show list of PP supporters. Another link on the page supposedly provides the list, but then you have to sign up to get to it. No thanks.
Meet the 38 Companies That Donate to Planned Parenthood
http://www.freerepublic.com/focus/f-news/3316053/posts
list is here on this thread
The link is to complete the petition. To access the list: please see “Further Resources” at the bottom left of the petition page. Click the first link “Companies ask PP to remove names as Corp. sponsors” The link in the 3rd paragraph leads to The Daily Signal article including a list of 38 companies. You don’t have to have an account to sign the petition if you choose to do so. Hope this helps!