A fresh SEC filing puts a precise figure on Elon Musk’s grip over Space Exploration Technologies: 6.4 billion shares, or 48.4 percent of the company, as of the end of June. The number matters because it translates into more than 85 percent of the vote through a dual-class structure that hands Class B stock ten times the voting weight of Class A. Only 849 million of Musk’s shares carry the standard vote; the rest are Class B, restricted units or options. That architecture lets him deploy SpaceX equity for acquisitions without surrendering control, a dynamic that frames every strategic decision, including a potential merger with Tesla.
The voting math is the moat
Class B shares convert the founder’s economic minority into a voting supermajority. With over 85 percent of the vote, Musk can approve deals unilaterally. The filing confirms what insiders already assumed: the Cursor acquisition, valued at $60 billion, barely dented his authority. Even if every restricted unit and option tied to that transaction is exercised, his voting power slips by less than one percentage point. The math suggests he could absorb a far larger stock-swap deal and still command the combined entity.
Cursor deal proves the template
SpaceX paid for the AI coding agent developer entirely with equity. The transaction demonstrated that the company’s shares function as a currency Musk controls at will. Because the voting structure insulates him from dilution, the cost of using that currency is borne by non-voting shareholders. The Cursor close was a proof of concept for a much bigger swap.
Tesla merger mechanics favor the bidder
Musk has stated he wants roughly 25 percent of Tesla’s voting power to steer the company toward AI and robotics; he held just under 20 percent as of June. Last fall Tesla approved a new incentive plan that grants him shares when market-value and operational milestones are hit. Several of those milestones would be deemed satisfied in a change of control, and the market-value tranches would pay out at the acquisition price. That means Musk can offer a steep premium for Tesla using SpaceX stock, collect additional Tesla shares as the milestones vest, and still retain a majority vote in the merged group. Tesla shareholders face a high premium; SpaceX shareholders absorb the dilution.
The xAI precedent is not encouraging
Earlier this year SpaceX acquired xAI on terms that valued the AI startup richly while diluting existing SpaceX holders. The same logic applies to a Tesla combination: a high-valuation target purchased with a controlled currency benefits the seller and the controller, not the passive investor. The filing added no material new risk, it merely quantified the leverage that makes such deals possible.
What to watch next
The next signal will be whether Musk formally proposes a stock-for-stock merger and at what exchange ratio. The Tesla board’s special committee, if formed, will test whether the premium justifies the dilution. SpaceX investors have no vote on the acquirer side. Their only leverage is the secondary market, where the price already prices in Musk’s unilateral optionality.