Source data
Arm legal entities and US listing milestones
Sources checked
- 12 November 1990Operating company incorporated
Widelogic Limited, later Arm Limited, company 02557590. Source 1
- September 2016SoftBank acquires the earlier listed parent
The earlier Arm Holdings plc was company 02548782. Source 1
- 9 April 2018New parent incorporated
Arm Holdings Limited, company 11299879. Source 1
- 1 September 2023Parent re-registers as a public company
Arm Holdings Limited becomes Arm Holdings plc. Source 1
- 14 September 2023Nasdaq trading begins
American depositary shares trade as ARM. Source 2
- 18 September 2023Offering closes
102.5 million depositary shares sold at USD 51 each, including the extra allotment. Source 2
The 1990 operating company and the 2018 listed parent have different UK company numbers.
Arm legal entities and US listing milestones
Company numbers and reorganisations come from Arm’s 2023 SEC prospectus. Trading and closing dates come from its closing release.
| Source | |||
|---|---|---|---|
| 12 November 1990 | Operating company incorporated | Widelogic Limited, later Arm Limited, company 02557590. | Source 1 |
| September 2016 | SoftBank acquires the earlier listed parent | The earlier Arm Holdings plc was company 02548782. | Source 1 |
| 9 April 2018 | New parent incorporated | Arm Holdings Limited, company 11299879. | Source 1 |
| 1 September 2023 | Parent re-registers as a public company | Arm Holdings Limited becomes Arm Holdings plc. | Source 1 |
| 14 September 2023 | Nasdaq trading begins | American depositary shares trade as ARM. | Source 2 |
| 18 September 2023 | Offering closes | 102.5 million depositary shares sold at USD 51 each, including the extra allotment. | Source 2 |