If the customer list is something the company generally protects against disclosure and only shares selectively, then your deceptive representations could help the company win a claim you violated trade secret law.

Because this information is disclosed in a publicly available legal document, there is little to no legal risk.  You should cite to the document in your blogging to provide convincing evidence that this information is publicly available and that you did nothing improper to obtain it.

If the company had this information posted on its own publicly available Web site, then it would have a hard time proving the information is a trade secret.

You didn’t do anything improper to obtain the list.  If you have no reason to believe the chief executive acted improperly in giving you the list, then there’s no apparent trade secret violation.  If, on the other hand, the list is marked “highly confidential,” or the chief executive tells you she shouldn’t be giving you the list, but “What the hey?” then it’s a tougher case and you’d want to proceed with caution.  To be on the safe side, perhaps you might call the manufacturers on the list and confirm their relationships with the supplier and post the results of your reporting rather than posting the list itself.  You’d probably want to do that anyway in the course of fact checking to protect against the sort of factual error that could support a libel claim should one of the manufacturers be listed erroneously.