There are signs in the SEC filing that selling its position in Citadel wasn't its first choice. Chicago-based Pentwater also holds warrants to buy 2.4 million shares of Citadel Class B common stock, but Citadel "refused to permit [Pentwater] to exercise its warrants." That was in April and based on that refusal, Pentwater deduced that Citadel also wouldn't let it convert any of its existing Class B shares into Class A shares. So it sold its Class B shares. Look for Cumulus Media to close on its $2.4 billion acquisition of Citadel Broadcasting in about a month.