Unfortunately the site got wiped out a few years ago so the best stuff is gone, but I've recently got it back on line in a more resilient, spam-resistant fashion.

There is a page of "Featured" exchanges, some of which include:

Fresenius Kabi confirming they are still acquiring a company even after its founder and board chair were arrested on a narcotics trafficking RICO:

https://www.pubmail.io/mail/thread/OF49EC78E8.C30281B7-ON862...

AmerisourceBergen confirming they paid out sales commissions based on the sale of opioid drugs, and changing that policy after the 60 minutes exposé:

https://www.pubmail.io/mail/thread/20171105013005.29768.F72D...

Some of the stuff is more trivial but needs to be done for completeness sake, like the WashPo denying payoff rumours:

https://www.pubmail.io/mail/thread/20171111020538.56788.2671...

Some of the stories are in silence - Cardinal Health and McKesson simply don't respond to any inquiries at all.

When it comes to investigative work, I think that the "story" is often in the aggregate rather than any one specific detail.