Looks like USCC disclosed the price what they won in the 600Mhz Auction and may have violated the FCC Quite Rule in the process. USCC didn’t disclose any information about what markets its bids were in – only that it bid a certain amount.

"U.S. Cellular gave the industry a shock on Thursday when it revealed in a filing with the Securities and Exchange Commission that it is on the hook for at least $327 million in bids in the FCC’s spectrum auction."

Did U.S. Cellular Violate Quiet Period Rules with Its SEC Filing?