BRACKLEY, ENGLAND — While Formula 1 observers spent recent weeks focused on the bidding war between Christian Horner and Toto Wolff for a 24 percent stake in Alpine F1, a separate transaction — smaller, quieter, and considerably more consequential — was apparently taking place in the background.

According to three sources with knowledge of the situation, Horner has acquired a minority stake in Mercedes-AMG Petronas Formula One Team. The size of the stake has not been confirmed. One source described it as 'not large enough to be operational, but large enough to matter.' A second source said only: 'He has a seat at the table.' A third source, reached Sunday, said they were not authorized to discuss the matter but did not deny it.

Wolff, who has served as Mercedes team principal since 2013 and holds a personal stake in the team, is understood to have been informed of the development on Sunday morning. His office did not respond to a request for comment by time of publication. A person close to Wolff said he was 'aware of the situation' and was 'considering his options.'

Wolff and Horner's rivalry defined the 2021 season and has not meaningfully cooled since. Wolff's office door remains closed. The coffee has not come back out.

The two men have shared one of motorsport's most documented rivalries. Their battle reached its peak during the 2021 championship season, when Wolff and Horner's public confrontations became a subplot that at times overshadowed the racing itself. After Horner was sacked by Red Bull in July 2025 — collecting a settlement reported at £75 million — Wolff publicly warned that Horner's return to the paddock would come with 'repercussions for past actions.' Horner, for his part, said he would only return for 'something that can win.'

Mercedes, which has not won a constructors' championship since 2021, is currently in the early stages of a rebuild under new technical regulations. Whether Horner's involvement constitutes 'something that can win' is a matter of interpretation.

The Alpine stake battle — in which Wolff's bid for Otro Capital's 24 percent share directly competed with a Horner-led consortium — now reads differently in light of Sunday's reporting. One source suggested the Alpine process was 'always meant to be visible.' They were asked what that meant. They said: 'It kept everyone looking at the wrong building.'

The Alpine bidding war, sources now suggest, was intended to be visible. 'It kept everyone looking at the wrong building,' one source said.

Horner's non-compete clause with Red Bull expires at the start of May. The timing of the Mercedes transaction, if confirmed, would place it just ahead of that window — suggesting the paperwork was structured carefully.

A spokesperson for Mercedes-AMG Petronas said the team does not comment on shareholder matters.

Toto Wolff's Tuesday calendar, according to one source, has been 'significantly adjusted.' The source declined to say what was added. They declined to say what was removed. They said only that it was 'going to be an interesting week.'

Horner, reached through an intermediary, said he had no comment. The intermediary then added, without being asked, that Horner 'seemed fine.'

He seemed fine.