CONTROVERSIA

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Portrait of onsemi

Portrait: Wikimedia Commons search — See Wikimedia Commons source page · source

Semi-conducteurs de puissance et de détection / automobile / industriel / IA

onsemi

Fiche documentée couvrant 14 controverses, dont « Spin-off de l’activité composants standard de Motorola » et « Introduction en bourse ».

Your opinion of this profile

Profile No. 5229 · Updated on 26 September 2026

14Documented controversies
20Sources
0Formal charge · all time
0Conviction

§ Legal statuses reflect the documented sources as of the date shown; they replace neither court decisions nor the presumption of innocence. Counts are not a rating. Methodology

I. Documented controversies

01

2026 – en cours au 21 septembre 2026

Projet d’acquisition de Synaptics pour environ 7 Md$

Status not specified

Not yet available in English — French original shown.

onsemi et Synaptics signent en juin 2026 un accord de fusion entièrement en actions valorisant l’entreprise acquise autour de 7 milliards de dollars. L’opération vise une clôture mi-2027; la période HSR américaine a bénéficié d’une fin anticipée en août 2026, mais d’autres approbations et le vote des actionnaires de Synaptics restent nécessaires.

Sources · 2

  1. [1]
    onsemionsemi to Acquire Synaptics to Enable the Next Generation of Intelligent Systems for Physical AIHigh reliability
  2. [2]
    U.S. Securities and Exchange Commissiononsemi / Synaptics Form S-4 — Regulatory Approvals Required for the MergerRegulatory filingVery high reliability

Last verified: 21 September 2026

02

2026

Accords de cession de deux sites de fabrication dans le cadre de la stratégie Fab Right

Status not specified

Not yet available in English — French original shown.

onsemi annonce en juillet 2026 des accords définitifs visant à céder deux sites de fabrication, dont son site de Tarlac aux Philippines, dans le cadre de sa stratégie de rationalisation industrielle « Fab Right ».

Sources · 1

  1. [1]
    onsemionsemi Advances Fab Right Strategy with Agreements to Divest Two Manufacturing FacilitiesHigh reliability

Last verified: 21 September 2026

03

2025

Offre non sollicitée sur Allegro MicroSystems puis retrait

Status not specified

Not yet available in English — French original shown.

onsemi propose d’acquérir Allegro MicroSystems en numéraire, avec une offre portée à 35,10 dollars par action. Le conseil d’Allegro juge la proposition insuffisante et onsemi retire finalement son offre en avril 2025, estimant qu’aucune voie praticable n’existe.

Sources · 2

  1. [1]
    Allegro MicroSystemsAllegro Confirms Receipt of Unsolicited Proposal from onsemiHigh reliability
  2. [2]
    onsemionsemi Withdraws Proposal to Acquire Allegro MicroSystemsHigh reliability

Last verified: 21 September 2026

04

2021

Rebranding d’ON Semiconductor en onsemi

No legal proceedings

Not yet available in English — French original shown.

En 2021, ON Semiconductor adopte la marque onsemi afin de refléter son portefeuille technologique et son recentrage sur les solutions de puissance et de détection.

Legal status — source text
Not applicable

Sources · 1

  1. [1]
    onsemiCompany HistoryHigh reliability

Last verified: 21 September 2026

05

2021

Acquisition de GT Advanced Technologies

Status not specified

Not yet available in English — French original shown.

onsemi acquiert GT Advanced Technologies pour environ 415 millions de dollars afin de sécuriser et développer son approvisionnement en carbure de silicium.

Sources · 2

  1. [1]
    onsemionsemi to Acquire GT Advanced TechnologiesHigh reliability
  2. [2]
    onsemionsemi Completes Acquisition of GT Advanced TechnologiesHigh reliability

Last verified: 21 September 2026

06

2019

Acquisition de Quantenna Communications

Status not specified

Not yet available in English — French original shown.

ON Semiconductor annonce puis finalise en juin 2019 l’acquisition de Quantenna Communications pour environ 1,0 milliard de dollars, afin d’ajouter des technologies Wi-Fi à son portefeuille de connectivité.

State of the evidence
Regulatory filing

Sources · 2

  1. [1]
    U.S. Securities and Exchange CommissionON Semiconductor Form 8-K — Quantenna merger agreementRegulatory filingVery high reliability
  2. [2]
    onsemi Investor RelationsON Semiconductor 2019 Form 10-Q — completion of Quantenna acquisitionHigh reliability

Last verified: 21 September 2026

07

2015–2016

Acquisition de Fairchild soumise à une cession antitrust

Status not specified

Not yet available in English — French original shown.

L’acquisition de Fairchild Semiconductor, valorisée autour de 2,4 à 2,5 milliards de dollars, est finalisée en septembre 2016 après un remède imposé par la FTC : ON doit céder son activité d’IGBT d’allumage, la FTC estimant que la combinaison aurait autrement probablement réduit substantiellement la concurrence sur ce marché.

Sources · 2

  1. [1]
    Federal Trade CommissionON Semiconductor Corporation, In the Matter ofVery high reliability
  2. [2]
    U.S. Securities and Exchange CommissionON Semiconductor 2016 Form 10-K — Fairchild acquisitionRegulatory filingVery high reliability

Last verified: 21 September 2026

08

2014

Acquisition de Truesense Imaging

Status not specified

Not yet available in English — French original shown.

ON Semiconductor acquiert Truesense Imaging en avril 2014 pour environ 95 millions de dollars afin de renforcer son portefeuille de capteurs d’images dans des applications industrielles et de transport.

State of the evidence
Regulatory filing

Sources · 1

  1. [1]
    U.S. Securities and Exchange CommissionON Semiconductor Form 10-Q — Truesense acquisitionRegulatory filingVery high reliability

Last verified: 21 September 2026

09

2014

Acquisition d’Aptina Imaging

Status not specified

Not yet available in English — French original shown.

ON Semiconductor finalise en août 2014 l’acquisition d’Aptina Imaging pour environ 402,5 millions de dollars, renforçant sa position dans les capteurs d’images automobiles et industriels.

State of the evidence
Regulatory filing

Sources · 1

  1. [1]
    U.S. Securities and Exchange CommissionON Semiconductor Form 10-Q — Aptina acquisitionRegulatory filingVery high reliability

Last verified: 21 September 2026

10

2010–2011

Acquisition de SANYO Semiconductor

Status not specified

Not yet available in English — French original shown.

ON Semiconductor signe en 2010 un accord pour acquérir SANYO Semiconductor et les actifs associés pour un prix annoncé d’environ 366 millions de dollars puis finalise la transaction au 1er janvier 2011.

State of the evidence
Regulatory filing

Sources · 2

  1. [1]
    ON Semiconductor / U.S. SECON Semiconductor to Acquire SANYO SemiconductorVery high reliability
  2. [2]
    U.S. Securities and Exchange CommissionON Semiconductor Form 8-K — Completion of SANYO Semiconductor acquisitionRegulatory filingVery high reliability

Last verified: 21 September 2026

11

2011

Acquisition de l’activité capteurs d’images CMOS de Cypress

Status not specified

Not yet available in English — French original shown.

ON Semiconductor acquiert l’activité CMOS Image Sensor de Cypress Semiconductor pour environ 31 à 34 millions de dollars et environ cent brevets ou demandes de brevets liés à l’activité.

State of the evidence
Regulatory filing

Sources · 2

  1. [1]
    ON Semiconductor / U.S. SECON Semiconductor Completes Acquisition of CMOS Image Sensor Business Unit from CypressVery high reliability
  2. [2]
    U.S. Securities and Exchange CommissionCypress Form 8-K — completion of image sensor divestitureRegulatory filingVery high reliability

Last verified: 21 September 2026

12

2007–2008

Acquisition d’AMI Semiconductor

Status not specified

Not yet available in English — French original shown.

ON Semiconductor annonce fin 2007 l’acquisition d’AMI Semiconductor puis finalise en mars 2008 la fusion, valorisée à environ 613 millions de dollars à la clôture selon le communiqué déposé auprès de la SEC.

State of the evidence
Regulatory filing

Sources · 2

  1. [1]
    ON Semiconductor / U.S. SECON Semiconductor Corporation Completes Merger of AMIS Holdings, Inc.Very high reliability
  2. [2]
    U.S. Securities and Exchange CommissionON Semiconductor Form 8-K — AMIS acquisition completionRegulatory filingVery high reliability

Last verified: 21 September 2026

13

2000

Introduction en bourse

Status not specified

Not yet available in English — French original shown.

ON Semiconductor réalise son introduction en bourse en avril 2000.

Sources · 1

  1. [1]
    onsemiCompany HistoryHigh reliability

Last verified: 21 September 2026

14

1999

Spin-off de l’activité composants standard de Motorola

Status not specified

Not yet available in English — French original shown.

Motorola sépare en 1999 son activité de semi-conducteurs standard pour créer l’entreprise indépendante ON Semiconductor.

Sources · 1

  1. [1]
    onsemiCompany HistoryHigh reliability

Last verified: 21 September 2026

II. Constellation of documented links

Each link refers to an imported relation or to a documented mention in a profile. A documented mention does not, on its own, prove a personal relationship.

List of documented links
  1. Mars1 reference
    • Mentioned in “Acquisition d’AMI Semiconductor” — onsemi's profile cites Mars.

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