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

ConfidenceCertainUpdated2026-07-29Review by2027-01-29Sources7Machine-translatedOriginal (JA)

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This page sits under business INDEX as a comparison surface for completed and announced corporate actions. Read the dedicated pages for Sony Financial Group, Arm, Toshiba, and Rakuten, plus the process pages Japan tender offer process and 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 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 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 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 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?

Sources

[!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.

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