As far as we know, they haven't received their qualifying offers (and neither have Vey and McMillan).
News1130 tweeted prior to that that Clendening, Corrado, Markstrom, and Baertschi had received qualifying offers.
It would be extremely foolish not to qualify them (excluding McMillan, he's useless). Stanton is an extremely cheap depth d-man, Weber is a bit more expensive but he still provided a good offensive punch from the back-end towards the end of the season, and Vey...well...Benning has invested too much into him to just let him go at this point even though he didn't produce much for the 2nd half of the season.