If the establishment of the contract was announced in an 8K as a material event, then the cancellation of that contract is an EQUALLY material event and should be annouced by 8K. You can't selectively disclose.
Waiting for a 10K won't cut it. The company had 4 days to issue an 8K on a material event. They did not. They chose to annouce something favorable to the stock, but withhold something not favorable.