Monte Paschi takes 86% of Mediobanca in major share buyout

Banca Monte dei Paschi di Siena (BMPS) has successfully concluded its voluntary tender and exchange offer for Mediobanca, securing 86.3% of its share capital through a combination of cash and newly issued BMPS shares, with payment scheduled for September 29, 2025. Despite the significant stake acquired, the offer did not meet the conditions for delisting, meaning Mediobanca shares will continue to trade on Euronext Milan, which saw Mediobanca shares decline 2.1% while BMPS rose 1.3% following the announcement.

Analysis

Banca Monte dei Paschi di Siena (BMPS) has successfully concluded its voluntary public tender and exchange offer, securing a dominant 86.3% stake in Mediobanca. The transaction, which will settle on September 29, 2025, involved a combination of newly issued BMPS shares and a cash component of €0.90 per Mediobanca share. Despite the high acceptance rate, the acquisition did not meet the necessary conditions to trigger a mandatory delisting of Mediobanca under Italian law, meaning its shares will continue to trade on Euronext Milan. The market has reacted to this outcome with a 1.3% increase in BMPS shares, signaling investor approval of the strategic acquisition. Conversely, Mediobanca's shares declined by 2.1%, reflecting the new reality for minority shareholders who will now be part of a company controlled by a single, super-majority owner.

Key Decisions for Investors

• Investors in BMPS should view the acquisition of an 86.3% stake in Mediobanca as a strategic positive, but must factor in the long-dated settlement of September 29, 2025 and monitor for future announcements regarding integration and synergies.
• Remaining minority shareholders in Mediobanca should re-evaluate their holding, as the stock now faces potential liquidity constraints and strategic decisions will be dictated by the new majority owner, BMPS.
• The failure to delist Mediobanca creates a distinct situation for its stock; while the primary M&A event has concluded, investors should watch for any future actions by BMPS to acquire the remaining free float or strategic moves that could impact the valuation of the minority stake.