>The onus of Reg FD is on the company to not furnish selective disclosure to investors in the first place.<
Sorry, I wasn't trying to make a legal comment regarding Reg FD. I was trying to be more practical in suggesting that an investor can contact the company and ask for the data. A simple phone call to see if they will divulge is probably a lot easier than trying to document their Reg FD violations and getting the data through a lawsuit :-)
Regardless, along the lines of your point, the response of the company to an inquiry will tell much about their corporate professionalism. If they don't release the data, does an investor really want to spend any more time following such a company?