Mars Could Have IPO'd a Hundred Times. Its Doctrine Has One Word for Why It Didn't.

In March 2025, a bond prospectus revealed a number that no public-company investor ever gets to see in this form: in 2024, Mars paid $1.5 billion in dividends to its shareholders — and every one of those shareholders has the same last name.² That payout was more than triple what the family took in 2022 and 2023 combined.² The company behind it did $54.6 billion in net sales that year.² And yet you cannot buy a single share of it, because there are no shares to buy. Mars has been making money since 1911, and the public has never once been invited in.¹

The easy story is that Mars stays private out of a kind of stubborn family pride — a billionaire clan that simply doesn't want strangers in the boardroom. That reading is wrong in the most useful way. Mars is not private by reflex. It is private by rule, and the rule is written down.

There is a fifth principle, and its name is Freedom

Mars runs on Five Principles — Quality, Responsibility, Mutuality, Efficiency, and Freedom — formally published in 1983 by the third generation of the family, who codified the management philosophy that Forrest Sr. had practiced before them.⁷ Four of the five are the sort of values any company would etch on a lobby wall. The fifth is the load-bearing one. Freedom, in Mars's doctrine, is not a vibe. It is a deliberate link between private ownership and the ability to allocate capital on the family's own clock — to invest in a decade when Wall Street would demand a quarter. Going public would not just change the cap table. It would delete the principle. That is the thesis: Mars's privacy is not sentiment, it is the operating system, and the Freedom principle is the line of code that keeps it private.

What a private company buys that a public one can't

Work the mechanism down and the advantage becomes concrete. A public company answers to a market that re-prices it every ninety days; its board lives in fear of the quarterly miss, the activist letter, the earnings call where a long-term bet is recast as a short-term drag. Mars answers to a family. That single difference is what lets it do things that look irrational on a public scorecard — sit on a brand for a generation, plow profits back instead of buying back stock, run businesses as different as pet care, snacking, and food under one roof without a chorus demanding it 'unlock value' by breaking itself apart.³ The company has even handed day-to-day control to non-family professional management since 2001, separating ownership from operations while keeping ownership absolute.⁸ The family owns the long horizon. The managers run the quarters. Nobody on the outside gets a vote.

The $35.9 billion proof

The standard objection to private ownership is that it caps your ambition: at some point a deal gets too big to do without selling equity to the public, and then you either go public or you stand down. Mars answered that objection in August 2024 by agreeing to acquire Kellanova — the snacking business spun out of Kellogg — for $83.50 a share, total consideration of $35.9 billion including assumed net leverage.³ It described itself in the filing as 'a family-owned, global leader in pet care, snacking, and food,' with 2023 net sales of more than $50 billion.³ No IPO. No public equity raise. One of the largest deals in the history of the industry, written by a company whose stock has never traded. The Freedom principle didn't just survive the company's scale-up to megacap size — it financed it.

But doesn't 'never needs outside money' fall apart on closer reading?

Here is the honest counter, and it deserves a straight answer: the legend that Mars funds everything from its own bottomless cash is false. Look at the Wrigley deal in 2008. Of the purchase price, only about $11 billion came from Mars itself. Goldman Sachs committed a $5.7 billion senior debt facility, and Berkshire Hathaway put in $4.4 billion of subordinated debt plus a $2.1 billion minority equity stake — in the Wrigley subsidiary, disclosed in the SEC filing.⁴ So at close, private ownership coexisted with a lot of other people's money. The distinction that matters, though, is what kind of money. Debt and a ring-fenced minority stake are temporary; equity in the parent is permanent. Mars later bought out Berkshire's entire equity interest, retiring the only outside owner it had let near the table.⁵ The doctrine was never 'borrow nothing.' It was 'sell no permanent stake in the parent.' Leverage is a tool you pay off. Public ownership is a tool you can never take back. Mars uses the first and refuses the second.

It's worth remembering how far back this instinct runs. The Milky Way bar, launched in 1923, is almost always said to be named for the galaxy — a tidy myth the company's own historian has knocked down: it was named after the malted-milk milkshake everyone was drinking at the time.⁶ A company that quietly corrects a century-old story about a candy bar is a company that cares more about getting the record right than getting the romantic version. The same temperament governs the ownership question. Mars doesn't stay private because going public would feel like a betrayal of the founder. It stays private because going public would forfeit the one asset the family actually controls — the freedom to ignore the market and answer only to the next generation. The candy is the product. The privacy is the strategy. And after more than a hundred years, the strategy is still the harder thing to copy.