OMAHA, Neb. (AP) — Warren Buffett’s company has agreed to an $896,000 penalty for failing to tell regulators about a December 2013 investment in wallboard maker USG Corp. beforehand.

The Federal Trade Commission said Wednesday that Berkshire Hathaway Inc. should have notified the Justice Department before it converted $325 million of senior USG notes it held into 21.4 million shares of the company.