Warren Buffett's public Kraft Heinz criticism is extremely unusual for the typically passive owner

Wall Street shared Buffett’s disappointment.

Kraft Heinz shares fell as much as 7.6% on Tuesday afterthe announcementearly that morning, but made back some of that loss, finishing down just 2.4% for the holiday-shortened week.

Will Buffett’s unhappiness prompt Berkshire to sell some or all of its stake?

He didn’t rule it out, saying, “We will proceed to do whatever we think is in the best interest of Berkshire.”

Buffett did add, “If we are approached about selling our shares, we wouldn’t accept the block bid unless the same offer is made to other Kraft Heinz shareholders.” That is, unless someone is willing to buy the entire company.

Becky reported Buffett doesn’t like the $300 million in additional overhead costs that will be spent to implement the split over the next year, and he doesn’t think it will do much good.

“It certainly didn’t turn out to be a brilliant idea to put them together, but I don’t think taking it apart will fix it.”

In 2013, Berkshire joined with Brazil’s 3G Capital Managementto buy H.J. Heinz for $23.3 billion.

Two years later, whenKraft merged with Heinz,Berkshire emerged with more than 325 million shares in the new company valued at around $24 billion whenthe deal closedin July of 2015.

While the value of Berkshire’s stake did well immediately after the merger, rising to around $30 billion in 2016, it slid sharply over the following three years and has been bouncing around $10 billion since 2020.

In his2015 letter to shareholders, Buffett wrote the shares cost Berkshire $9.8 billion, so right now it has an overall loss of around $1.0 billion.

Berkshirewrote down the investment by $3.8 billionin the second quarter to better reflect its market value. It did a$3.0 billion write-downin 2019.

In a2019 live CNBC interviewwith Becky Quick, Buffett had some regrets about Berkshire’s role in the Kraft Heinz merger, saying he had “overpaid” for a good company.

The stock price has dropped 69% since the merger closed.

The split did not come as a complete surprise.

In July,The Wall Street Journalreported Kraft Heinzwas “eyeing spinning off a large chunk of its grocery business, including many Kraft products.”

Two Berkshire executives resigned from the KHC board in Mayafter the company revealed an “ongoing evaluation of strategic transactions to unlock shareholder value.”

Those resignations prompted speculation at the time Berkshire could start selling, “creating an overhang on the stock,”according to one analyst.

That overhang is even more ominous now.

Because Berkshire owns more than 10% of KHC shares, it will need to report any open market sales within two business days, which could prompt other investors to also sell.

Buffett isn’t alone in his criticism of the split.

The Financial Timeswrites,“At its heart, Kraft Heinz’s problem is it has failed to respond to changing consumer tastes.” It thinks the split is “less a bold strategic pivot, and more the result of years of underperformance caused by prioritising [UK spelling] cost cuts over innovation.”

Reuterscolumnist Jennifer Sabacalls the “remaking [of] the sausage … as unpleasant to see as ever.”

“Despite producing a wide variety of brands, the endless cycle of wheeling and dealing seems to come in only one yucky flavor” with “implausibly optimistic” financial engineering.

Warren Buffett admitsBerkshire Hathaway paid too much for Kraft in its merger with Heinz, citing the growing pricing power of retailers over brands.

Holdings are as of June 30, 2025 as reported inBerkshire Hathaway’s 13F filingon August 14, 2025, except for:

The full list of holdings and current market values is available from CNBC.com’sBerkshire Hathaway Portfolio Tracker.

Please send any questions or comments about the newsletter to me atalex.crippen@nbcuni.com. (Sorry, but we don’t forward questions or comments to Buffett himself.)

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Also, Buffett’s annual letters to shareholders are highly recommended reading. There are collectedhere on Berkshire’s website.

— Alex Crippen, Editor, Warren Buffett Watch