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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Form 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of July, 2026
Commission file number 001-41800
Arm Holdings plc

110 Fulbourn Road Cambridge United Kingdom
(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.
Form 20-F ☒ Form 40-F ☐

EXHIBIT INDEX

Exhibit Number | Description
99.1 | Earnings Press Release dated July 29, 2026
99.2 | Shareholder Letter dated July 29, 2026

SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

| ARM HOLDINGS PLC
Date: July 29, 2026 | By: | /s/ Laura Bartels
| Name: | Laura Bartels
| Title: | Chief Accounting Officer (Principal Accounting Officer)