The filing comes five months after the UK-based chipmaker announced it had filed confidential, preliminary IPO paperwork with US regulators. 

The outfit didn't provide a projected share price in its F-1 paperwork, but the figure is likely to be around $50-64 billion. That's twice the $32 billion SoftBank paid for Arm seven years ago.

Arm has long developed and licensed what it describes as high-performance, low-cost, and energy-efficient central processing unit (CPU) products and related technology, on which many of the world's leading semiconductor companies and OEMs rely to develop their products.

Among customers of the roughly 6,000-person company are Apple, Alphabet, Advanced Micro Devices, Qualcomm, and Mercedes-Benz.

Analysts expect Arm's IPO to be the biggest of 2023, though not everyone agrees that the company is worth what SoftBank thinks it is worth.

Late last month, Bernstein analysts assessed Arm's fair-market value to be about $40 billion based on its preliminary analysis of the limited financial information that was available at the time.