SpaceX has confidentially filed for an initial public offering, moving Elon Musk’s rocket and satellite company closer to what could become the largest listing in history.

The filing is the clearest step yet in an IPO process that had already been signaled through earlier reports. SpaceX has now submitted draft registration documents to the US Securities and Exchange Commission, putting the company on track for a possible June listing. That filing comes just weeks after Musk combined SpaceX with xAI in an all-stock deal, creating an enlarged entity valued at $1.25 trillion.

If completed near the reported size, the offering would eclipse Saudi Aramco’s $29 billion 2019 debut by a wide margin. SpaceX generated about $8 billion in profit on as much as $16 billion in revenue last year, with Starlink serving as a major growth engine.