"I have hard time finding one." Me too. Under the circumstances of a depressed share price do you think that it might serve a company that had a high confidence level that a BTD request would be granted well to announce the request or is the risk too great?
"How about a list by FDA providing the names of companies having a pending BTD request?" Don't think that one is published. I couldn't find one. There is a list of approved requests but I don't think there's a list of the declines.