McLaren Racing CEO Zak Brown has submitted a formal letter to the FIA requesting regulatory changes that would prohibit common ownership structures across Formula 1 teams. The letter, filed directly with motorsport's governing body, arrives as the grid's ownership map grows more complex and investor appetite for multi-team portfolios increases.
The move follows no immediate trigger event but reflects mounting concern inside team leadership about structural conflicts. Brown's letter specifically requests rules preventing any single entity or related parties from holding controlling or significant stakes in more than one Formula 1 constructor. The FIA's current governance framework addresses technical and sporting regulations but lacks explicit ownership concentration limits beyond the general prohibition on one team entering multiple cars under different constructor names.
The timing matters for three constituencies. First, team operators: cross-ownership creates asymmetric information risk. If two teams share a parent company or major investor, personnel decisions, technical development priorities, and commercial strategies become harder to firewall. Second, sponsors: brand exclusivity clauses assume competitive independence. A tire sponsor paying $40 million annually to one team expects that team's engineers are optimizing for victory, not managing a portfolio outcome that might favor a sister squad. Third, potential acquirers: if the FIA tightens ownership rules retroactively, existing stakes become harder to exit or restructure, compressing valuations for anyone holding fractional positions in multiple teams.
Brown's letter also signals McLaren's own M&A posture. The team is majority-owned by Bahrain's Mumtalakat sovereign wealth fund, which holds no other F1 assets. By advocating for ownership silos, McLaren effectively raises the cost for rival teams to pursue the kind of portfolio strategies that private equity and sovereign funds have used in other sports. It also protects McLaren's competitive differentiation: the team has rebuilt itself as an independent constructor with exclusive technical partnerships, and any rule that punishes shared ownership reinforces that model's value.
The FIA now faces a procedural question. Brown's letter is not a formal rule proposal under the World Motor Sport Council process, but it invites the governing body to open a consultation. That process typically runs six to nine months and requires input from all ten teams, the Formula 1 commercial rights holder, and the FIA's own legal and compliance divisions. If the FIA moves forward, expect teams with complex ownership—or those courting investors with multi-team ambitions—to file counter-arguments by late spring.
Meanwhile, the letter creates a reference point for ongoing sponsor negotiations. McLaren's commercial team can now cite governance advocacy as evidence of structural integrity, a useful signal when rival teams are pitching sponsors on lower activation costs or bundled deals across sister properties.
Watch for two follow-ons. First, whether any other team principal publicly supports or opposes Brown's request in the next 30 days—silence from certain teams will be as informative as endorsement. Second, whether the FIA's April World Motor Sport Council agenda includes an ownership review item, which would indicate serious consideration rather than acknowledgment and filing.
The takeaway
Zak Brown's FIA letter seeks to preempt cross-team ownership structures, raising costs for portfolio investors and reinforcing McLaren's independent model.
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