What Happened To Buffett's Budweiser Stake?

Berkshire Hathaway (BRKA) filed with the SEC on August 15th and listed its current public stock holdings as of June 30th. Interestingly, there was a notable name absent from the list; Anheiser Busch (BUD).

Now, you may recall BUD came out in late April and said it had learned that Berkshire, Buffett's holding company, had taken a meaningful stake in it. The stock reacted by jumping $3 to $48 on the news, and many investors bought BUD shares simply because Buffett did.

The question I have is, how come recent SEC filings show no such stake in the beer giant?