A view of the gaming floor at The Hollywood Casino Perryville, owned by Penn National Gaming. The casino was the only one of three operating in Maryland that had been filing required disclosure reports.(Doug Kapustin — For The Washington Post)

The Post reported last month that the casino was one of two operating in Maryland that had failed to file the required reports, which also asks for a list of employed lobbyists.

“We apologize for the delay in submitting the forms, but we were not aware of the filing requirement,” wrote Michael L. Vild, general counsel for Ocean Enterprise 589 LLC, an entity controlled by developer William Rickman, that owns the casino. “In the future, we will be sure to file these forms on a regular basis.”

The form is due twice a year from companies doing business with the state as well as those that retain lobbyists in Annapolis. The owners of Ocean Downs and Maryland Live!, the other casino that was late filing the forms, have employed lobbyists in the capital since at least 2010.

Elections officials said last month they had no record of receiving forms from either casino owner since then.

The most recent form was due Aug. 6, days before the start of a special session on expanded gambling.

Some of the information requested on the disclosure form is available in other state filings. But if filled out properly, the form provides more detailed and more timely disclosures than are publicly available elsewhere.