McLaren Racing CEO Zak Brown has filed a formal letter with the FIA urging regulators to close what he sees as a structural loophole: the possibility of multiple teams operating under shared ownership or control. The letter, confirmed by sources familiar with its contents, comes as the FIA evaluates expansion bids and existing teams brace for $200 million anti-dilution payments tied to any eleventh entrant.

Brown's concern centers on franchise independence. Under current Commercial Rights Holder agreements, teams receive equal revenue shares and operate as autonomous competitors. But no binding regulatory text explicitly prevents a single entity from controlling two entries through layered holding structures, licensing agreements, or coordinated technical partnerships that blur competitive boundaries. Brown wants that ambiguity eliminated before the next Concorde Agreement cycle or before an expansion slot is awarded.

The timing matters for three reasons. First, Andretti Global's $200 million entry bid remains in regulatory limbo, and while Michael Andretti has no formal tie to existing teams, the structure of future bids is unknown. Second, at least two private-equity firms have quietly sized dual-team acquisition scenarios over the past eighteen months, attracted by the sport's $3.2 billion annual commercial take and the arbitrage between team operating expenses (roughly $140-180 million for a midfield constructor) and franchise valuations now clearing $1 billion. Third, the current Concorde Agreement expires in 2025, and governance riders negotiated now will cement grid architecture through 2030.

Brown's letter does not name specific parties, but it arrives two months after rumors circulated in the Jeddah paddock that a consortium linked to a current team principal had explored acquiring a second entry through an offshore trust structure. Those talks stalled, but the scare was enough. Teams operating under shared ownership could theoretically coordinate on aerodynamic development, supplier negotiations, or even on-track strategy in ways that disadvantage independent franchises. McLaren, which competes as a standalone constructor, has no such structural optionality.

The FIA has not yet responded publicly, but sources expect the matter to surface at the next World Motor Sport Council session in June. Brown is not alone in his concern. At least two other team principals have privately endorsed the call for tighter ownership language, though neither has signed onto the letter. One noted that the issue is less about trust and more about contract clarity: if franchise values continue rising, the incentive to exploit ambiguity rises with them.

McLaren's own shareholder base adds context. Bahrain's Mumtalakat sovereign wealth fund owns 60% of McLaren Racing, MSP Sports Capital holds the balance, and the team has entertained inbound interest from at least three other financial sponsors over the past year. Brown's posture protects McLaren's competitive moat but also signals to potential investors that the franchise operates in a stable, rule-bound environment where asset value is not diluted by governance gamesmanship.

The next checkpoint is the FIA's June council meeting. If Brown's letter gains traction, expect draft language circulated to teams by late summer. If it stalls, expect at least one expansion bidder to test the boundaries.