Italy's banking landscape just witnessed one of the year's most dramatic corporate showdowns—and it's far from over. Shareholders of Banca Monte dei Paschi di Siena rejected the bank's plan to complete its merger with Mediobanca last Friday, sinking a deal that would have created one of Italy's largest financial institutions. Now, rival Intesa Sanpaolo is preparing a €33 billion hostile takeover bid that could reshape the entire Italian banking sector.

The shareholder vote on November 6 marked a stunning reversal for Monte dei Paschi, which had acquired 86 percent of Mediobanca last year and proposed a full merger by incorporation that would delist the 80-year-old Mediobanca brand. Instead of ratifying the deal, shareholders voted it down—forcing Monte dei Paschi to raise its full-year profit outlook and chart a new course as an independent entity.

The Mediobanca Deal That Wasn't

Monte dei Paschi's board had approved the Mediobanca merger plan back in February 2026, envisioning a "full integration" that would create a banking powerhouse with combined assets and market reach. The proposed merger by incorporation would have absorbed Mediobanca entirely, ending its presence as an independent listed company on the Milan bourse.

But shareholders balked. The rejection reflected concerns about valuation, strategic fit, and the timing of such a massive consolidation move. With Monte dei Paschi raising its 2026 profit guidance following the failed vote, the bank is now positioning itself as a stronger standalone institution—one that may not need Mediobanca after all.

Intesa's Hostile Bid Looms

The shareholder rejection opened the door for Intesa Sanpaolo, Italy's second-largest bank, to launch an unsolicited takeover bid. According to reports published November 2, Intesa plans to start its €33 billion ($37 billion) cash-and-share offer in the last week of November—potentially as soon as November 23.

Intesa has since sweetened its proposal to €35 billion, adding €800 million in cash to win over Monte dei Paschi's largest shareholders. The revised offer signals Intesa's determination to consolidate Italy's fragmented banking sector and eliminate state ownership of Monte dei Paschi, which has long been a political and financial headache for Rome.

A Three-Way Banking Battle

The Monte dei Paschi drama is unfolding against the backdrop of broader Italian banking consolidation. In June, Monte dei Paschi became the target of a separate €34 billion ($38 billion) bid from another rival, adding layers of complexity to an already tangled corporate landscape.

Intesa's bid is also colliding with another major deal: Banco BPM's proposed €50 billion merger, which Intesa's Monte dei Paschi offer aims to disrupt. The result is a high-stakes competition among Italy's largest banks, each vying for market share and scale in a consolidating industry.

What's at Stake

For Monte dei Paschi, the failed Mediobanca merger and incoming Intesa bid represent existential questions about the bank's future. Founded in 1472, Monte dei Paschi is the world's oldest surviving bank, but its modern history has been marked by financial struggles, state bailouts, and restructuring efforts.

The Italian government, which still holds a significant stake in Monte dei Paschi, has long sought an exit strategy that would remove the bank from public ownership. An Intesa takeover could accomplish that goal—but at what cost to Monte dei Paschi's identity, employees, and regional presence?

For Intesa Sanpaolo, acquiring Monte dei Paschi would cement its position as a dominant player in Italian banking, with expanded reach in Tuscany and central Italy. CEO Carlo Messina has pursued a strategy of domestic market consolidation, and the Monte dei Paschi bid fits squarely within that vision.

Shareholder Showdown Ahead

The coming weeks will test whether Intesa can succeed where Monte dei Paschi's own merger plan failed. Winning over Monte dei Paschi's shareholders—many of whom just rejected the Mediobanca deal—will require a compelling financial case and strategic rationale.

Intesa has already moved to secure support from key investors, and the €800 million cash sweetener suggests the bank is willing to pay a premium to close the deal. But hostile takeovers in Italy's banking sector carry political and regulatory risks, especially when a storied institution like Monte dei Paschi is at stake.

As the November 23 bid deadline approaches, all eyes will be on Italy's banking sector—where a failed merger, a rejected deal, and a €35 billion hostile offer have turned what should have been a straightforward consolidation into one of 2026's most dramatic corporate battles.