Unilever's announcement in March to separate its Foods business triggered an immediate drop in share price, with the stock falling to just 4221.50 GBX despite the company's reassurances. The sell-off mirrors what Kraft Heinz experienced when it announced plans to split into two separate entities. Kraft Heinz has since paused its separation after Berkshire Hathaway, its largest investor, moved to sell its entire stake, signalling investor skepticism about the merits of the splits.
The two demergers are part of a broader reshaping of Big Food. Mars acquired snack brand Kellanov for $36 billion in an historic transaction, while Ferrero Group bought WK Kellogg Co. Nestlé is also selling part of its coffee and waters businesses. Yet the ongoing splits stand apart because they risk dismantling operations and culture without guarantee of near-term returns.
Why Big Food splits?
Demergers in the food space typically combine long-term strategy with short-term investor expectations. Brands spun off or sold are often smaller, niche businesses that no longer fit the parent company's portfolio, or mature brands in decline. When executed well, a separation can give each business clearer strategic focus, enable more efficient capital allocation, and speed decision-making. Both the parent and the new independent entity theoretically end up better positioned to compete.
But theory and practice diverge. The financial mechanics of a split are relatively predictable, yet the operational reality of detangling manufacturing, production, supply chains, IT systems and data creates acute complexity. Leadership teams must balance separation execution against keeping the core business moving forward, a demand that stretches attention and resources.
Culture and talent attrition
Culture disruption is frequently underestimated by boards. Demergers reshape a company's identity and leave employees facing prolonged uncertainty. High-performing staff, who have external job opportunities, are especially vulnerable to attrition when uncertainty takes hold. Retaining talent during a period of change is critical yet often difficult. Beyond employees, splits ripple across customers and retail partners, who may face questions about supply continuity, commercial terms, and account ownership when shared systems or teams are dismantled.
The execution window
Boards typically measure separation success over a long period, but patience wears thin. Tolerance for underperformance usually spans 12 to 24 months. If benefits have not materialised within that window, boards may revisit strategy, adjust leadership, or push for further change. The tension between staying the course and meeting near-term expectations can pressure leadership to show tangible results sooner than realistic.
Timing and communication matter most
For Big Food, splitting the business is rarely a simple value-unlocking exercise. Success hinges not just on strategic rationale but on timing, communication, and the ability to manage cultural, operational, and talent challenges alongside financial ones. In an industry already grappling with inflation, shifting consumer habits, and supply-chain complexity, a demerger can be both opportunity and distraction. The question facing leadership is not whether to split, but whether they are truly prepared for what comes next.