A broadcast studio at Digital Center 2, a new 194,000-square-foot building on the ESPN campus in Bristol, Connecticut, May 22, 2014. REUTERS/Michelle McLoughlin Disney, the parent company of ESPN, warned that the sports network may keep losing subscribers.

During an earnings conference call in August, Disney CEO Bob Iger said that ESPN had "experienced some modest [subscriber] losses" because of an overall decline in multichannel cable subscriptions in US households.

A regulatory filing submitted Wednesday evening and cited by The Hollywood Reporter indicates the losses are much greater.

ESPN networks now have 92 million subscribers, according to THR. It was 95 million last year and 99 million in 2013.

The loss of 7 million subscribers potentially amounts to hundreds of millions of dollars in lost annual revenue.

The cable industry at large has suffered a kind of exodus over the past few years, as TV streaming and over-the-top services multiply and consumers find ways to either trim down their cable subscriptions or, in some cases, cut them altogether.