Mars takes Kellanova private, creating a $36 billion snack supergiant

Overview

The company behind M&M's and Snickers just swallowed Pringles, Cheez-It and Pop-Tarts. Mars closed its $35.9 billion all-cash acquisition of Kellanov in December 2025, taking the Kellogg snack spin-off private and rolling its brands into an enlarged Mars Snacking empire. In early 2026, the combined company is moving quickly—industry analysts predict aggressive innovation in flavor mashups (think Pringles-branded candy bars or Cheez-It M&M's), alongside dual-branded marketing campaigns already planned for 2026.

This deal concentrates a huge slice of the world's candy, chips, crackers and breakfast treats under one privately held player. It tests how much consolidation regulators, retailers and consumers will tolerate before pushing back on prices, choice and power at the supermarket shelf.

Barely six weeks after the merger closed, Cheez-It claimed a Product of the Year 2026 award. Mars is demonstrating the commercial clout of its expanded portfolio, and raising the stakes for what comes next.

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Key Indicators

$35.9B

Total value of Mars–Kellanova deal

All‑cash enterprise value, including assumed debt, making it 2024’s largest packaged‑food acquisition.

$83.50

Cash per Kellanova share

Offer price, roughly a 44% premium to Kellanova’s prior 30‑day average trading level.

Regulatory sign‑offs

Number of global approvals and clearances obtained before the deal closed on December 11, 2025.

Billion‑dollar brands at Mars Snacking

Mars says the combined snacking unit now boasts nine brands topping $1 billion in annual sales.

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People Involved

Poul Weihrauch

Architect of Mars’s biggest-ever deal, responsible for integrating Kellanova and delivering promised synergies.

Andrew Clarke

Now leads an expanded Mars Snacking division combining Mars and Kellanova brands.

Steve Cahillane

Left Kellanova on January 1, 2026 to become CEO of Kraft Heinz; will lead that company through its planned 2026 split into two independent publicly traded companies.

Daniel Guarnera

Led the FTC team that investigated, then cleared, the Mars–Kellanova merger.

Organizations Involved

Mars, Incorporated

Private food and pet-care conglomerate

Family-owned acquirer; now ultimate parent of Kellanova and an expanded Mars Snacking division.

Mars is the privately held confectionery, pet care and food giant that just bought Kellanova.

Mars Snacking

Business division

Combined home for Mars and Kellanova’s snack and convenience brands.

Mars Snacking is the division where M&M’s now sits next to Pringles and Cheez‑It.

Kellanova

Consumer packaged goods company

Former NYSE-listed snack and international cereal company, now a wholly owned Mars subsidiary.

Kellanova was Kellogg’s snacks-led offspring; it now lives inside Mars’s private empire.

U.S. Federal Trade Commission

Federal agency

Reviewed and cleared the Mars–Kellanova merger after a yearlong antitrust investigation.

The FTC is the U.S. antitrust watchdog that decided not to block the Mars–Kellanova deal.

European Commission

Supranational antitrust authority

Opened a Phase II probe, then cleared the Mars–Kellanova transaction with no major remedies.

The EU antitrust arm was the final regulator to bless the Mars–Kellanova mega‑merger.

Timeline

Cheez-It Wins Product of the Year 2026 Award
Market

Cheez-It, now owned by Mars following the Kellanova acquisition, is named Product of the Year 2026 winner in the Crisps and Snacks category, signaling early commercial success under new ownership.
January 29th, 2026
Industry Analysis Highlights 2026 Innovation Focus
Corporate

FoodNavigator publishes comprehensive analysis predicting innovation will take center stage for Mars in 2026, with expectations for flavor mashups between Mars and Kellanova brands and dual-branded Pringles-Cheez-It campaigns planned across key occasions throughout the year.
January 21st, 2026
Cahillane Exits Kellanova, Joins Kraft Heinz as CEO
Corporate

Steve Cahillane steps down from Kellanova effective January 1 to become Chief Executive Officer of Kraft Heinz, replacing Carlos Abrams-Rivera. He will lead Kraft Heinz through its planned 2026 split into two independent companies.
January 1st, 2026
Mars Leases Major Chicago Office Space for Expanded Snacking Unit
Corporate

Mars reaches agreement to lease over 100,000 square feet at 400 N. Aberdeen St. in Chicago's Fulton Market District, signaling physical consolidation of its expanded Mars Snacking headquarters following the Kellanova acquisition.
January 2026
Mars Closes Acquisition, Kellanova Leaves Wall Street
Closing

Mars and Kellanova announce completion of the transaction; Kellanova becomes a wholly owned Mars subsidiary and its shares are delisted from the NYSE.
December 11th, 2025
EU Clears Mars–Kellanova After Full Investigation
Regulatory

The European Commission approves the $36 billion takeover without major divestitures, removing the final big regulatory obstacle to closing.
December 8th, 2025
Kellanova’s S&P 500 Exit Cleared as Ares Steps In
Market

S&P Dow Jones Indices announces that Ares Management will replace Kellanova in the S&P 500 ahead of Mars’s closing.
December 8th, 2025
FTC Ends U.S. Antitrust Review, Says Deal Isn’t Illegal
Regulatory

After a yearlong probe, the FTC grants early termination of its investigation, saying evidence does not support blocking the Mars–Kellanova merger.
June 25th, 2025
Europe Opens Deeper Probe Into Snack-Sector Power
Regulatory

Within hours of the FTC’s green light, the European Commission launches an in‑depth Phase II review over potential price hikes and retailer squeeze.
June 25th, 2025
Kellanova Shareholders Sign Off on Mars Takeover
Shareholder Vote

Kellanova investors approve the Mars acquisition at a special meeting, clearing a key condition for closing.
November 1st, 2024
Mars Announces $35.9 Billion All-Cash Deal for Kellanova
Deal Announcement

Mars and Kellanova unveil an agreement for Mars to acquire all Kellanova shares for $83.50 in cash, valuing the company at $35.9 billion including debt.
August 14th, 2024
Kellogg Spins Off Cereals, Births Snacks-Led Kellanova
Corporate

Kellogg completes the separation of WK Kellogg Co, leaving Kellanova as a global snacks and international cereal company.
October 2nd, 2023

Scenarios

Predict which scenario wins. Contrarian picks score more — points lock in when the scenario resolves.

Predictions leaderboard

Mars Turns Into a Snack Superpower — and Quietly Pushes Prices Higher

In this scenario, Mars wrings the synergies it promised from Kellanova: shared factories, logistics and marketing bring real cost savings, and the enlarged Mars Snacking unit gains even more leverage over supermarket chains. With snacks and candy already highly concentrated, gradual price increases and richer trade terms stick, especially where private‑label rivals are weak. Regulators, having already cleared the deal, struggle to respond unless there’s an obvious smoking gun, leaving consumers to absorb higher prices over several years.

Discussed by: Forbes columnists, grocery-industry analysts, and M&A commentary from Cornell Mergersight and AInvest

Consensus —

Backlash Builds: Regulators and Retailers Reopen the Mars–Kellanova Question

Here, post‑merger pricing and shelf‑space tactics spark a backlash. Independent grocers and large chains complain that a turbocharged Mars is using its broad portfolio to demand preferential placement and fees across categories, echoing concerns flagged by skeptics when the deal was announced. If food inflation flares again, lawmakers may push the FTC or the European Commission to revisit the combined company’s behavior, perhaps through conduct remedies or new sector‑wide rules on slotting fees and ‘category captain’ arrangements.

Discussed by: Antitrust commentators, consumer advocates, competition-law outlets such as Competition Today

Consensus —

Mars Reshuffles the Portfolio, Spinning or Selling Non-Core Brands

Mega‑mergers often look neat on slides but messy in operations. If integration proves harder than expected, or if parts of Kellanova underperform inside Mars, the company could streamline by selling or spinning smaller or non‑core lines – especially in low‑growth frozen or plant‑based categories. That would echo the way Kraft’s Cadbury acquisition eventually led to a split into Kraft Heinz and Mondelez. Investors and rivals would watch closely for divestiture opportunities in snacks, breakfast or plant‑based brands.

Discussed by: Deal bankers, CPG strategists, financial press covering consumer-goods consolidation

Consensus —

Historical Context

Mars’s 2008 Wrigley Buyout

2008–2016

What Happened

In 2008, Mars, backed by Warren Buffett’s Berkshire Hathaway, bought Wrigley for about $23 billion, uniting two candy giants under private ownership. Over subsequent years Mars integrated Wrigley and later folded its chocolate and Wrigley units into a single confectionery business.

Outcome

Short Term

The deal vaulted Mars into the top tier of global confectionery and loaded it with acquisition debt.

Long Term

Integration was largely viewed as successful, cementing Mars’s playbook of using big, debt‑funded deals to scale snacks.

Why It's Relevant Today

Shows Mars has executed transformative, leverage‑heavy deals before and suggests it sees Kellanova as a repeatable version of the Wrigley playbook, just across more snack categories.

Kraft’s Takeover of Cadbury and Birth of Mondelez

2009–2015

What Happened

Kraft Foods’ hostile bid for UK chocolate maker Cadbury in 2009 provoked political fury and worries about plant closures. Kraft prevailed in 2010, then struggled with culture clashes and portfolio sprawl before eventually splitting its global snacks business into a new company, Mondelez International, in 2012.

Outcome

Short Term

The merger expanded Kraft’s footprint but generated controversy over factory shutdowns and broken job promises.

Long Term

The split into Kraft Heinz and Mondelez highlighted how mega‑mergers can force later break‑ups when strategies diverge.

Why It's Relevant Today

Provides a cautionary tale that even successful snack mergers can trigger public backlash, restructuring and eventual portfolio surgery – all risks Mars will have to manage.

Kellogg’s 2023 Breakup Into Kellanova and WK Kellogg Co

2022–2023

What Happened

Kellogg announced plans to break into more focused companies, then in October 2023 spun off WK Kellogg Co as its North American cereal arm while renaming the remaining snacks‑led business Kellanova. The move aimed to give investors a purer bet on faster‑growing snacks and emerging markets.