Portrait of Jérôme Kerviel

Photo: Max malafosse · CC BY-SA 4.0 · Wikimedia Commons

Born in France · Nationality French — Finance / trading / fraud / criminal, civil and employment law

Jérôme Kerviel

Documented profile covering 11 controversies, including “2018: Criminal review application refused and dismissal ultimately upheld on appeal” and “June 2016: Employment tribunal victory — dismissal ruled without genuine and serious grounds, approximately €455,000 awarded”.

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Profile No. 2171 · Updated on 12 October 2026

Portrait of Jérôme Kerviel

Photo: Max malafosse · CC BY-SA 4.0 · Wikimedia Commons

11Documented controversies
7Sources
1 followed by a conviction

I. Documented controversies

01

September–December 2018

2018: Criminal review application refused and dismissal ultimately upheld on appeal

Civil / administrative proceedings

In September, the competent commission rejected his application for a criminal retrial for lack of sufficient new evidence. In December, the Paris Court of Appeal upheld dismissal for serious misconduct and reversed the 2016 employment tribunal award, rejecting Kerviel's claims for compensation and bonuses.

Attribution
Protagonist is the complainant

Sources · 2

  1. [1]
  2. [2]
    Reuters / BoursoramaLa cour d'appel valide le licenciement de Kerviel par SocGenNews agencyVery high reliability

Last verified: 14 September 2026

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02

7 June 2016

June 2016: Employment tribunal victory — dismissal ruled without genuine and serious grounds, approximately €455,000 awarded

Civil / administrative proceedings

The employment tribunal found the dismissal unlawful and ordered Société Générale to pay Kerviel approximately €455,000, including a 2007 bonus and compensation.

Attribution
Protagonist is the complainant

Sources · 2

  1. [1]
  2. [2]
    Société GénéraleAffaire KervielStatementMedium reliability

Last verified: 14 September 2026

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03

23 September 2016

September 2016: Civil liability reduced from €4.9 billion to €1 million

Civil / administrative proceedings

The Versailles Court of Appeal set damages payable by Kerviel to Société Générale at €1 million, far below the €4.9 billion initially imposed.

Attribution
Accused

Last verified: 14 September 2026

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Case · 4 documented stages

March 2014: Court of Cassation upholds criminal conviction but quashes €4.9 billion damages award

Conviction
04

19 March 2014

March 2014: Court of Cassation upholds criminal conviction but quashes €4.9 billion damages award

Conviction

The Court of Cassation definitively upheld the criminal sentence but quashed the civil order to repay €4.9 billion, finding that Société Générale's failures had to be considered when assessing compensable loss.

State of the evidence
Documented

Last verified: 14 September 2026

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05

May–September 2014

May–September 2014: Imprisonment followed by sentence adjustment with electronic tag

Conviction

Kerviel surrendered to the authorities in May 2014 and was imprisoned at Fleury-Mérogis. After approximately 150 days, the Court of Appeal authorised an arrangement involving an electronic monitoring tag.

State of the evidence
Documented
Attribution
Accused

Sources · 1

  1. [1]

Last verified: 14 September 2026

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07

5 October 2010

October 2010: Criminal conviction, five years with three to serve and €4.9 billion in damages

Conviction

The court convicted Kerviel of breach of trust, forgery, use of forged documents and computer-related manipulation, sentencing him to five years in prison, including three to serve, and initially ordering him to compensate the full €4.9 billion loss.

Attribution
Accused

Sources · 2

  1. [1]
    Société GénéraleAffaire KervielStatementMedium reliability
  2. [2]

Last verified: 14 September 2026

Add to this entry

08

2007–January 2008

2007–January 2008: Unauthorised positions approaching €50 billion concealed through fictitious transactions

Conviction

Kerviel took massive directional positions far beyond his limits and used fictitious trades or entries to conceal exposure reaching tens of billions of euros.

State of the evidence
Confirmed
Attribution
Directly implicated

Sources · 2

  1. [1]
    Société GénéraleAffaire KervielStatementMedium reliability
  2. [2]
    Reuters / BoursoramaLa cour d'appel valide le licenciement de Kerviel par SocGenNews agencyVery high reliability

Last verified: 14 September 2026

Add to this entry

06

24 October 2012

October 2012: Court of Appeal upholds criminal conviction and full compensation

Civil / administrative proceedings

The Court of Appeal upheld the principal elements of the conviction, including, at that stage, €4.9 billion in damages.

State of the evidence
Documented

Sources · 2

  1. [1]
    Société GénéraleAffaire KervielStatementMedium reliability
  2. [2]

Last verified: 14 September 2026

Add to this entry

09

January 2008

January 2008: Positions unwound and €4.9 billion loss announced by Société Générale

Investigation

After discovering the positions, Société Générale rapidly unwound them in deteriorating markets and announced a loss of approximately €4.9 billion attributed to Kerviel's unauthorised transactions.

State of the evidence
Documented
Attribution
Directly implicated

Last verified: 14 September 2026

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10

January–March 2008

2008: Dismissal for gross misconduct, police custody, formally placed under investigation (mise en examen) and pre-trial detention

Investigation

Following discovery of the fraud, Kerviel was dismissed, questioned and prosecuted, notably for breach of trust, forgery, use of forged documents and fraudulent entry of data into a computer system; he also spent time in pre-trial detention.

State of the evidence
Documented
Attribution
Directly implicated

Sources · 2

  1. [1]
    Société GénéraleAffaire KervielStatementMedium reliability
  2. [2]
    Reuters / BoursoramaLa cour d'appel valide le licenciement de Kerviel par SocGenNews agencyVery high reliability

Last verified: 14 September 2026

Add to this entry

11

2005–2007

2005–2007: Limit breaches and control warnings before final discovery

No legal proceedings

Limit breaches, anomalies and warnings emerged before January 2008. They subsequently fuelled debate over what Société Générale management and control systems could or should have known.

State of the evidence
Documented
Attribution
Directly implicated

Sources · 2

  1. [1]
  2. [2]
    Société GénéraleAffaire KervielStatementMedium reliability

Last verified: 14 September 2026

Add to this entry

II. Constellation of documented links

  • Linked profile (portrait or initials) — click to open it
  • Line width: number of documented references
  • Hover over or tap a line: controversies and sources

Two profiles are linked when a documented controversy of one names the other. The link points to that controversy and its sources; it does not indicate a personal relationship.

List of documented links (4)
  1. Société Générale5 documented references
  2. Daniel Bouton2 documented references
  3. Frédéric Oudéa1 documented reference
  4. Jean-Pierre Mustier1 documented reference

III. Has something changed?

A new court decision, a missing source, a mistake? Tell us what should be updated: every request is read by the editorial team.

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