Yeah, think of something like earnings reports. It's very important that no one gets early access, and very useful to have a third party handle it so you can prove that no one has early access. And if the third party screws it up, they get investigated by the SEC, not you.
I saw the previous developer of the CCBN (Corporate Communications Broadcast Network) pop up on in the HN comments last time this was mentioned to explain its stagnation and mishandling after being bought by Thomson-Reuters. Can't find it now myself; anyone else have the link?
http://corporatesolutions.thomsonreuters.com/investor-relati...
Many more examples (including several large companies) can be found at:
https://www.google.com/search?q=inurl:http://phx.corporate-i...