---
title: "Japan listed corporate strategic restructuring matrix — five primary-source cases"
aliases:
  - "japan-listed-corp-strategic-restructuring-matrix"
  - "Japan listed corporate restructuring comparison"
  - "Japan spinoff carve-out going-private matrix"
  - "Japan corporate-action vehicle matrix"
  - "上場企業 事業再編 比較マトリクス"
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, M&A, restructuring, spinoff, IPO, going-private, TOB, japan, matrix]
status: active
sources:
  - "https://www.sony.com/en/SonyInfo/IR/library/SFG_pso/"
  - "https://group.softbank/en/news/press/20230919"
  - "https://www.global.toshiba/ww/ir/corporate/tender-offer.html"
  - "https://global.rakuten.com/corp/news/press/2023/0322_01.html"
  - "https://global.rakuten.com/corp/news/press/2026/0520_11.html"
  - "https://www.kioxia-holdings.com/en-jp/news/2024/20241218-1.html"
  - "https://www.meti.go.jp/policy/economy/keiei_innovation/keizaihousei/oshirase/spinoff-kaitei_20260522.html"
---

# Japan listed corporate strategic restructuring matrix — five primary-source cases

## Wiki route

This page sits under [[business/INDEX|business INDEX]] as a comparison surface for completed and announced corporate actions. Read the dedicated pages for [[business/sony-fg-partial-spinoff-case|Sony Financial Group]], [[business/softbank-vision-fund-arm-ipo-template|Arm]], [[corporate-strategy/toshiba-tob-squeeze-out-2023-2024-case|Toshiba]], and [[business/rakuten-group-mobile-finance-bundling-case|Rakuten]], plus the process pages [[finance/japan-tender-offer-process|Japan tender offer process]] and [[corporate-strategy/spinoff-decision-tree-japan|Japan spin-off decision tree]].

## TL;DR

Five well-documented cases illustrate different restructuring outcomes:

1. Sony Group distributed Sony Financial Group shares and retained a minority interest.
2. SoftBank sold existing Arm shares into an IPO while retaining control.
3. TBJH used a tender offer and share consolidation to take Toshiba private.
4. Rakuten Bank combined a primary issue with a parent secondary sale at listing; a later bank-centered reorganization remains scheduled and conditional.
5. Kioxia completed a TSE Prime listing after its earlier carve-out history.

The matrix deliberately excludes the old page's unsupported Hitachi Astemo sponsor sequence, characterization of Sharp as a take-private, market-cap “re-rating” outcomes and sponsor-return claims.

## 1. Case map

The master table is limited to issuer and regulator disclosures for the five cases. ^[Sources: https://www.sony.com/en/SonyInfo/IR/library/SFG_pso/; https://group.softbank/en/news/press/20230919; https://www.global.toshiba/ww/ir/corporate/tender-offer.html; https://global.rakuten.com/corp/news/press/2023/0512_01.html; https://www.kioxia-holdings.com/en-jp/news/2024/20241218-1.html.]

| Case | Core vehicle | Completed date | Immediate outcome |
|---|---|---|---|
| Sony Group → Sony Financial Group | In-kind share distribution with separate listing | Listing 2025-09-29; spin-off effective 2025-10-01 | Sony retained 16.40%; SFG became an equity-method affiliate |
| SoftBank Group → Arm | Nasdaq IPO consisting entirely of secondary shares | Trading began 2023-09-14; closing 2023-09-18 UK time | 102.5 million ADSs sold; SoftBank retained control |
| Toshiba → TBJH / JIP structure | Tender offer followed by share-consolidation squeeze-out | Delisting 2023-12-20; consolidation effective 2023-12-22 | Toshiba became privately held |
| Rakuten Group → Rakuten Bank | TSE Prime IPO with primary issuance and parent secondary offering | Listed 2023-04-21 | Rakuten Bank raised capital and Rakuten Group sold part of its holding while retaining control |
| Kioxia Holdings | TSE Prime IPO following an earlier corporate carve-out | Listed 2024-12-18 | Kioxia became separately listed under code 285A |

“Completed date” is transaction-specific: a listing date, tender-offer settlement, squeeze-out effective date and spin-off effective date are not interchangeable.

## 2. Consideration and control

The following table compares who received securities or cash and whether control changed at the cited completion point. ^[Sources: https://www.sony.com/en/SonyInfo/IR/library/FY2025_20F_PDF.pdf; https://www.sec.gov/Archives/edgar/data/1973239/000197323924000004/arm-20231231.htm; https://www.global.toshiba/content/dam/toshiba/ww/ir/corporate/news/20230921_1.pdf; https://global.rakuten.com/corp/news/press/2023/0512_01.html; https://www.jpx.co.jp/english/listing/stocks/new/dh3otn000000libx-att/12KioxiaHoldings-OutlinetEN.pdf.]

| Case | Recipient / consideration | Issuer primary capital? | Control at the cited completion point |
|---|---|---|---|
| Sony / SFG | Sony shareholders received SFG shares pro rata | No conventional primary IPO raise in the distribution | Sony deconsolidated SFG and retained 16.40% |
| SoftBank / Arm | New public investors bought ADSs from the SoftBank selling entity | No; Arm received no proceeds | SoftBank remained controlling shareholder |
| Toshiba / TBJH | Tendering and later squeezed-out shareholders received cash under the disclosed mechanics | Not applicable | TBJH obtained control and completed minority elimination |
| Rakuten Bank IPO | Investors bought newly issued shares and shares sold by Rakuten Group | Yes | Rakuten Group retained control immediately after the listing |
| Kioxia IPO | Investors acquired shares through the disclosed public / secondary offering structure | Yes, under the listing disclosure | Kioxia became a separately listed issuer; use later filings for current ownership |

The matrix does not infer parent-level tax from the presence or absence of primary capital. Seller tax, issuer capital, shareholder tax and consolidated accounting are separate questions.

## 3. Vehicle selection boundaries

This vehicle table combines transaction disclosures with METI's partial-spin-off guidance and the relevant dedicated case pages. ^[Sources: https://www.meti.go.jp/policy/economy/keiei_innovation/keizaihousei/oshirase/spinoff-kaitei_20260522.html; https://www.sony.com/en/SonyInfo/IR/library/SFG_pso/; https://group.softbank/en/news/press/20230919; https://www.global.toshiba/ww/ir/corporate/tender-offer.html; https://global.rakuten.com/corp/news/press/2023/0512_01.html; https://www.kioxia-holdings.com/en-jp/news/2024/20241218-1.html.]

| Vehicle | Case | What it accomplishes | What it does not establish |
|---|---|---|---|
| Partial spin-off / share distribution | Sony / SFG | Delivers subsidiary shares to existing parent shareholders and can remove consolidation control | That every retained stake below 20% automatically qualifies for tax deferral |
| Secondary subsidiary IPO | SoftBank / Arm | Provides parent liquidity and creates a public float while control can remain | That the issuer raises capital |
| TOB plus squeeze-out | Toshiba / TBJH | Pays cash and can eliminate remaining minority shareholders after required approvals | A standard price, minimum condition or holding period for every Japanese take-private |
| Mixed primary / secondary subsidiary IPO | Rakuten Bank | Raises issuer capital and monetizes part of the parent's holding | That the parent necessarily loses control |
| Carve-out-company IPO | Kioxia | Creates a separately listed issuer after prior ownership restructuring | That the original carve-out and later IPO are one simultaneous legal step |

Vehicle choice depends on the intended recipient of consideration, desired control outcome, funding need, approvals and transaction-specific tax conditions.

## 4. Status discipline

The timeline table separates completed facts from the one material scheduled action included in this comparison. ^[Sources: https://www.sony.com/en/SonyInfo/IR/library/SFG_pso/; https://group.softbank/en/news/press/20230919; https://www.global.toshiba/content/dam/toshiba/ww/ir/corporate/news/20231219_1.pdf; https://global.rakuten.com/corp/news/press/2026/0520_11.html; https://www.kioxia-holdings.com/en-jp/news/2024/20241218-1.html.]

| Action | Status at 2026-07-29 | Evidence boundary |
|---|---|---|
| Sony SFG listing and partial spin-off | Completed | Listing and effective dates are historical facts |
| Arm IPO and option exercise | Completed | Original IPO facts do not prove current SoftBank ownership |
| Toshiba delisting and share consolidation | Completed | No public re-listing timetable is inferred |
| Rakuten Bank-centered card / securities reorganization | Scheduled for 2026-10-01, subject to disclosed approvals and conditions | It must not be presented as completed before closing evidence |
| Kioxia TSE Prime listing | Completed | Later ownership and market value require later filings / market data |

This distinction prevents a common error in corporate-action research: treating an announced effective date as a completed legal outcome.

## 5. Case notes

### Sony Financial Group

Sony Group shareholders received SFG shares, SFG relisted before the distribution became effective, and Sony retained 16.40% at effectiveness. See [[business/sony-fg-partial-spinoff-case|the dedicated case]] for the denominator and accounting boundary.

### Arm

All 102.5 million ADSs in the completed IPO were sold by the SoftBank selling entity. Arm received no proceeds, and continued control meant SoftBank did not expect a consolidated profit-or-loss sale gain. See [[business/softbank-vision-fund-arm-ipo-template|the dedicated case]].

### Toshiba

The ¥4,620-per-share offer cleared its transaction-specific minimum, TBJH held 78.65% of voting rights after settlement, and the remaining shares were eliminated through a share consolidation. See [[corporate-strategy/toshiba-tob-squeeze-out-2023-2024-case|the dedicated case]].

### Rakuten Bank

The 2023 listing combined new shares with Rakuten Group's sale of existing shares. The May 2026 agreement is a separate later transaction: Rakuten Bank is planned to become parent of Rakuten Card and Rakuten Securities Holdings on 2026-10-01, subject to conditions. See [[business/rakuten-group-mobile-finance-bundling-case|the dedicated case]].

### Kioxia

Kioxia completed its TSE Prime listing on 2024-12-18 under code 285A. The earlier Toshiba memory-business separation and private ownership period provide historical context, but the IPO is a later transaction with its own listing documents.

## 6. Use of the matrix

For a new case, answer these questions before selecting an analogue:

1. Who should receive consideration: the issuer, parent, existing shareholders or selling minority holders?
2. Should the parent retain control, retain only a minority link, or exit?
3. Is the target outcome a new listing, continued listing or delisting?
4. Which approvals and minority-protection steps apply to the actual vehicle?
5. Which tax conditions are evidenced for that specific transaction?
6. Is each date announced, approved, settled, listed or legally effective?

## Related

- [[business/INDEX|business INDEX]]
- [[business/sony-fg-partial-spinoff-case|Sony Financial Group partial spin-off case]]
- [[business/softbank-vision-fund-arm-ipo-template|SoftBank / Arm IPO case]]
- [[business/rakuten-group-mobile-finance-bundling-case|Rakuten ecosystem case]]
- [[corporate-strategy/toshiba-tob-squeeze-out-2023-2024-case|Toshiba take-private case]]
- [[corporate-strategy/japan-kabushiki-bunpai-spinoff-regime|Japan partial-spin-off regime]]
- [[corporate-strategy/spinoff-decision-tree-japan|Japan spin-off decision tree]]
- [[finance/japan-tender-offer-process|Japan tender offer process]]
- [[finance/japan-mbo-and-squeeze-out-process|Japan MBO and squeeze-out process]]
- [[securities/japan-ipo-2024-2025-case-study-kioxia-tokyo-metro|Japan IPO case study]]
- [[INDEX|FinWiki index]]

## Sources

- Sony Group, SFG partial-spin-off portal: https://www.sony.com/en/SonyInfo/IR/library/SFG_pso/
- SoftBank Group, Arm IPO closing: https://group.softbank/en/news/press/20230919
- Toshiba, tender-offer transaction portal: https://www.global.toshiba/ww/ir/corporate/tender-offer.html
- Rakuten Group, Rakuten Bank listing approval: https://global.rakuten.com/corp/news/press/2023/0322_01.html
- Rakuten Group, listing accounting / offering completion: https://global.rakuten.com/corp/news/press/2023/0512_01.html
- Rakuten Group, definitive 2026 reorganization agreement: https://global.rakuten.com/corp/news/press/2026/0520_11.html
- Kioxia, completed TSE Prime listing: https://www.kioxia-holdings.com/en-jp/news/2024/20241218-1.html
- METI, FY2026 partial-spin-off guidance: https://www.meti.go.jp/policy/economy/keiei_innovation/keizaihousei/oshirase/spinoff-kaitei_20260522.html

---

> [!info] Verification status
> confidence: **certain** for the dated transaction facts in the five primary-source cases. Current ownership and the October 2026 Rakuten reorganization require later completion evidence.