Santander files Form 425 detailing exchange offer for Santander Brasil minority

What happened

Banco Santander, S.A. (SAN) filed a Form 425 with the SEC on August 14, 2026, providing details on its proposed exchange offers to acquire the outstanding minority interest in its subsidiary Banco Santander (Brasil) S.A. The filing consists of a Q&A document addressing exchange ratio mechanics, dividends, and the strategic rationale.

Santander announced on July 30, 2026, that it would make concurrent exchange offers in Brazil and the United States. Under the offers, holders of Santander Brasil common shares, preferred shares, units, and American Depositary Shares (ADSs) would receive Banco Santander securities in exchange.

The exchange ratio is set at 0.2028 Banco Santander BDRs or ADSs per Santander Brasil common or preferred share, and 0.4056 per unit or ADS. The ratio may be adjusted for dividends or interest on equity (JCP) declared between announcement and expiration, but not for share buybacks.

Santander says the offers represent a 15% premium to Santander Brasil's unaffected closing unit price of BRL 25.25 on July 30, 2026. The company expects the transaction to be neutral for its CET1 ratio and accretive to EPS and tangible book value per share by 0.5% and 0.6% by 2028, respectively.

The transaction remains subject to regulatory and corporate approvals, including Santander shareholder approval for the related capital increase. Santander expects to complete the exchange offers in the first half of 2027.

On the filing date, Santander's stock closed at $14.87, down 4% from the prior close of $15.49, on volume of approximately 3.5 million shares, about 9.6 times its average volume. The filing does not explain the price movement.

The Q&A details

The Form 425 includes 25 questions and answers. A key point is the adjustment mechanism: if Santander Brasil pays dividends or JCP with a record date during the offer period, those amounts are converted to euros and deducted from the Santander Brasil unit price used to set the exchange ratio. Similarly, dividends paid by Banco Santander are deducted from Santander's share price.

No fractional Santander securities will be issued; instead, fractional entitlements will be aggregated, sold, and the cash proceeds paid to tendering holders.

Santander states that it does not plan to cancel Santander Brasil's SEC registration or delist from the NYSE, but warns that if many shareholders tender, the remaining securities may no longer meet listing requirements, and it may elect to delist.

The offers have no minimum acceptance threshold, so Santander's ownership could increase materially even if not all minorities tender. If a significant portion of minorities tender, Santander Brasil's free float and liquidity may decline substantially.

Santander says the offers provide equal treatment to all shareholders and that no shareholder has committed to tendering or not tendering. It also clarifies that Santander Brasil ADR holders will receive Santander ADSs only, and the fee treatment will be announced later.

The rationale given is that Brazil is a core market, the transaction simplifies Santander's structure, and the offers give minorities a liquid exit at a premium. Santander notes it already controls about 90% of Santander Brasil, so no control premium is included.

What this means

A Form 425 is a filing required under SEC rules when a company is involved in a merger or business combination and wants to distribute information to shareholders. It is often used to publish Q&A documents like this one, which supplement the formal offer materials that will come later.

Santander Brasil is a Brazilian bank listed on the NYSE through ADSs, which are US-traded certificates representing shares of a foreign company. The exchange offers would replace those ADSs with Santander's own ADSs or BDRs (Brazilian Depositary Receipts), both of which represent shares in the parent company.

The exchange ratio is calculated by applying a 15% premium to Santander Brasil's closing unit price, converting to euros, and dividing by Santander's unaffected share price. The ratio is fixed at the announcement but is adjusted for dividends and JCP to keep the economics fair for both sides.

The transaction is structured as a share exchange, not cash, so the value minorities receive is not capped. It will move with Santander's share price and the EUR/BRL exchange rate until settlement. This also means the deal is expected to have no immediate effect on Santander's CET1 ratio, a key measure of capital strength.

What typically happens next: the definitive offer documentation will be published after conditions are met, shareholders will vote on the capital increase, and then the exchange offers will formally launch. Completion is expected in the first half of 2027, according to the company.