---
title: "SoftBank / Arm 2023 IPO case — all-secondary sell-down with parent control retained"
aliases:
  - "softbank-vision-fund-arm-ipo-template"
  - "SBG Arm IPO case"
  - "Vision Fund Arm monetization template"
  - "SoftBank Arm 2023 listing"
domain: "business"
created: 2026-05-25
last_updated: 2026-07-29
last_tended: 2026-07-29
review_by: 2027-01-29
confidence: certain
tags: [business, case-study, softbank, arm, ipo, secondary-offering, control]
status: active
sources:
  - "https://newsroom.arm.com/news/arm-announces-pricing-of-initial-public-offering"
  - "https://group.softbank/en/news/press/20230919"
  - "https://www.sec.gov/Archives/edgar/data/1973239/000119312523228059/d393891df1a.htm"
  - "https://www.sec.gov/Archives/edgar/data/1973239/000197323924000004/arm-20231231.htm"
  - "https://group.softbank/en/news/press/20160718"
---

# SoftBank / Arm 2023 IPO case — all-secondary sell-down with parent control retained

## Wiki route

This entry sits under [[business/INDEX|business INDEX]] as a completed cross-border subsidiary-IPO case. Read it with [[business/japan-listed-corp-strategic-restructuring-matrix|Japan listed corporate strategic restructuring matrix]], [[business/sony-fg-partial-spinoff-case|Sony Financial Group partial spin-off case]], and [[finance/japan-listed-financial-groups-investable-universe|Japan listed financial-groups universe]].

## TL;DR

Arm Holdings began trading on Nasdaq on **2023-09-14** at an IPO price of **$51 per ADS**. After the underwriters exercised the full option, **102,500,000 ADSs** were sold. Every ADS in the offering was sold by Kronos II LLC, an indirect wholly owned SoftBank Group subsidiary; **Arm received no proceeds**. SoftBank Group disclosed expected net disposal proceeds of **$5.123 billion**, after underwriting discounts and commissions and before expenses. ^[Sources: https://newsroom.arm.com/news/arm-announces-pricing-of-initial-public-offering; https://group.softbank/en/news/press/20230919; https://www.sec.gov/Archives/edgar/data/1973239/000197323924000004/arm-20231231.htm.]

The case is therefore an **all-secondary parent sell-down**, not a mixed primary / secondary capital raise. It created a quoted public float while SoftBank retained control. The public transaction documents do not establish that margin-loan capacity, a particular later AI investment, or validation of Vision Fund performance was an IPO objective.

## 1. Ownership path and transaction boundary

The following table is limited to SoftBank's acquisition release, Arm's prospectus and the closing disclosures. ^[Sources: https://group.softbank/en/news/press/20160718; https://www.sec.gov/Archives/edgar/data/1973239/000119312523228059/d393891df1a.htm; https://group.softbank/en/news/press/20230919.]

| Stage | Publicly established fact | Boundary |
|---|---|---|
| 2016 acquisition | SoftBank agreed to acquire Arm for approximately £24 billion | The official announcement used £24 billion / approximately $31 billion, not $32 billion |
| Pre-IPO seller | Kronos II LLC was the selling shareholder | Kronos II was an indirect wholly owned SoftBank Group subsidiary |
| Issuer | Arm Holdings plc | UK-incorporated issuer with ADSs listed in the United States |
| Offering form | Secondary sale of existing shares represented by ADSs | No new Arm shares were sold for Arm's account |
| Post-offering control | SoftBank remained Arm's controlling shareholder | Public float did not amount to a change of control |

The historical relationship between Arm and SoftBank-managed investment vehicles changed before the IPO. This page therefore uses the legal seller and controlling-shareholder disclosures from the offering documents instead of treating “Vision Fund” as the transaction counterparty.

## 2. Completed IPO facts

The completed transaction table distinguishes the initial base offering from the fully exercised option. ^[Sources: https://newsroom.arm.com/news/arm-announces-pricing-of-initial-public-offering; https://group.softbank/en/news/press/20230919; https://www.sec.gov/Archives/edgar/data/1973239/000119312523228059/d393891df1a.htm.]

| Element | Completed fact |
|---|---|
| Venue / ticker | Nasdaq Global Select Market / ARM |
| First trading date | 2023-09-14 |
| IPO price | $51 per ADS |
| Base offering | 95,500,000 ADSs |
| Underwriters' option | 7,000,000 additional ADSs, exercised in full |
| Total sold | 102,500,000 ADSs |
| ADS ratio | One ADS represented one Arm ordinary share |
| Seller | Kronos II LLC |
| Issuer proceeds | None |
| SoftBank disclosed net disposal proceeds | $5.123 billion after underwriting discounts and commissions, before expenses |

Arm's prospectus stated that 1,026,078,866 ordinary shares would be outstanding after the offering. On that prospectus denominator, the fully exercised sale represented approximately 10% and left SoftBank with approximately 90%; later percentages must be recalculated from later filings rather than carried forward indefinitely.

## 3. Cash, accounting and control

The following table separates three outcomes that the old page combined. ^[Sources: https://group.softbank/en/news/press/20230919; https://www.sec.gov/Archives/edgar/data/1973239/000197323924000004/arm-20231231.htm.]

| Question | Evidence-based answer |
|---|---|
| Who received offering cash? | The SoftBank selling entity, subject to underwriting discounts, commissions and expenses |
| Did Arm raise primary capital? | No; Arm's filing states that it received no proceeds |
| Did SoftBank lose control? | No; Arm remained a SoftBank Group subsidiary after the IPO |
| Did SoftBank record a consolidated sale gain in profit or loss? | SoftBank said it did not expect a gain on sale in consolidated profit or loss because control was retained; the equity effect was recorded in capital surplus |
| What did the listing create? | A publicly traded minority float and a quoted market price for Arm ADSs |

These facts support describing the IPO as partial monetization with control retained. They do not by themselves prove a future sell-down schedule, collateral policy, target loan-to-value ratio or capital-allocation destination.

## 4. Comparison with the Sony Financial Group separation

The table uses each issuer's completed transaction disclosures and keeps the legal mechanisms distinct. ^[Sources: https://group.softbank/en/news/press/20230919; https://www.sony.com/en/SonyInfo/IR/library/SFG_pso/; https://www.sony.com/en/SonyInfo/IR/library/FY2025_20F_PDF.pdf.]

| Dimension | SoftBank / Arm | Sony Group / Sony Financial Group |
|---|---|---|
| Mechanism | Secondary IPO sell-down | In-kind share distribution and separate listing |
| Cash to parent | Yes, from sold ADSs | No sale proceeds from the distribution itself |
| Shares delivered to parent shareholders | No | Yes, pro rata under the disclosed ratio |
| Parent position at completion | Control retained, approximately 90% on the IPO denominator | 16.40% retained at the spin-off effective date |
| Consolidation outcome | Arm remained consolidated | SFG was deconsolidated and became an equity-method affiliate |
| Primary capital for separated company | None in the cited Arm IPO | Not a conventional primary IPO raise |

The two cases both created separately traded securities, but their consideration, control and accounting outcomes were fundamentally different.

## 5. What the case teaches

- A subsidiary IPO can be entirely secondary; “IPO” does not imply that the issuer receives cash.
- A small public float can establish market trading while the parent retains control.
- Seller proceeds, issuer proceeds and consolidated accounting effects must be reported separately.
- A quoted share price can inform valuation analysis, but the IPO documents do not prescribe how the parent should calculate NAV or finance later investments.
- A cross-border ADS offering should not be generalized into the tax treatment of a Japanese share distribution or domestic subsidiary IPO.

## 6. Monitoring points

- Use the latest Arm and SoftBank filings for current ownership rather than the IPO-date approximately 90% figure.
- Distinguish later SoftBank secondary sales, pledges or financing arrangements from the original IPO.
- Keep Arm operating performance separate from the parent-level proceeds and accounting treatment.
- Treat proposed capital allocation and future sell-down timing as forward-looking unless an official filing specifies them.

## Related

- [[business/INDEX|business INDEX]]
- [[business/japan-listed-corp-strategic-restructuring-matrix|Japan listed corporate strategic restructuring matrix]]
- [[business/sony-fg-partial-spinoff-case|Sony Financial Group partial spin-off case]]
- [[corporate-strategy/spinoff-decision-tree-japan|Japan spin-off decision tree]]
- [[finance/japan-listed-financial-groups-investable-universe|Japan listed financial-groups universe]]
- [[INDEX|FinWiki index]]

## Sources

- Arm, IPO pricing announcement: https://newsroom.arm.com/news/arm-announces-pricing-of-initial-public-offering
- SoftBank Group, closing and full exercise of the option: https://group.softbank/en/news/press/20230919
- Arm final prospectus: https://www.sec.gov/Archives/edgar/data/1973239/000119312523228059/d393891df1a.htm
- Arm quarterly filing describing the IPO and no issuer proceeds: https://www.sec.gov/Archives/edgar/data/1973239/000197323924000004/arm-20231231.htm
- SoftBank Group, 2016 Arm acquisition announcement: https://group.softbank/en/news/press/20160718

---

> [!info] Verification status
> confidence: **certain** for the acquisition announcement, IPO price, ADS count, all-secondary structure, seller, proceeds boundary and continued control. Future ownership, financing and capital-allocation claims require later filings.