What you write suggest that Peter has a limited command of the English language. "By" means before the end of the second quarter. I guess the proposition "at" would have been the right choice if the right time was after the end of the second quarter.
"Based on a reply I received from Peter in IR this afternoon, it would appear to be a matter of semantics regarding the meaning of the phrase or the words "by the end of 2Q."
They apparently believe they were correct, forthcoming and on schedule with the PR issued today. Or at least that is his story."