Introduction

With this accurate sentence, Warren Buffett describes the importance for companies to preserve their reputation, which is part of a broader concept: the corporate image, which can also be assimilated to corporate reputation. Both terminologies can be used and will be in this article.

Dowling specifies that « reputation corresponds to the values attributed (such as authenticity, honesty, responsibility and integrity) to a company by an individual from the moment the company's image is stated ».²

A company's image is therefore a reflection of what it exudes and how its market perceives it — not only its customers, but also its suppliers, its employees, and those who support the company. A company could thus be perceived positively as being innovative (e.g. Apple), eco-responsible (e.g. Danone) or the symbol of a social brand (e.g. German car brands). On the other hand, the perception could be negative, as in the case of groups operating in the oil or tobacco sectors.

Image can be positive or negative. Depending on this perception, the company will be able to sell its products at a better price or in greater quantity. Taking the automotive industry as an example, the Audi brand enjoys a very positive image and is a strong social marker. As such, it can charge higher prices than its competitors. For the same features, an Audi car will be sold at a higher price than a Peugeot.

As such, corporate image — like reputation — qualifies as an intangible asset. It does not appear on traditional balance sheets but plays a vital role in value creation. Its worth lies in its ability to drive future cash flows, differentiate the company in competitive markets, and foster stakeholder trust.

Image is the sum of the values conveyed by a company, making it an essential vector of communication. However, an event, whether wrongful or not, can damage this image and, consequently, disrupt the company's ability to communicate effectively.

The company's reputation has become such an important matter that monitoring it is now an integral part of overall risk management.³ This is easy to understand when you consider that when a company's way of communicating with its market is hampered, it can have a direct impact on its business, leading to a drop in sales — but not only.

For example, the Volkswagen emissions scandal severely disrupted the company's ability to communicate as a trustworthy and environmentally responsible brand, resulting in lost sales, legal penalties, and reputational repair costs. Similarly, in the Perrier benzene contamination case — further developed below — the disruption to its image as a premium bottled water brand caused a temporary market withdrawal, leading to substantial financial losses.

Such events can harm various stakeholders⁴: shareholders (through lost equity value), employees (job losses due to lower business activity), and customers (decreased trust and satisfaction). For financial experts, the goal is to assess the compensable damage caused by image harm to these stakeholders.

It then becomes mandatory to rebuild this image in order to restore its communication potential, and this involves substantial investment. But is this mandatory process a prejudice? In this case the event would have to be proven as wrongful — that is the lawyer's part. Then, what about the damage? How to evaluate a damage coming from a reputation loss? That is the financial expert's role. Finally, a causal link between these elements must be demonstrated.

However, if there is a fault (the event), a loss (loss of business, additional costs) and a causal link between these elements, then yes — there is a prejudice for the company, which we will describe as a corporate reputation damage.

The purpose of this article is to propose a framework to rationalize and objectify the quantification of financial losses caused by corporate image damage. Rather than prescribing a one-size-fits-all approach, the framework seeks to offer principles and tools to objectively evaluate damages in these complex scenarios.

To understand this method, we will first review what a corporate reputation damage crisis is, then the overall approach to be adopted by the financial expert. We will then study the loss quantification method, before reviewing the tools available to the Expert.

I/ Description of a Corporate Reputation Damage Crisis

A corporate reputation damage crisis can be broken down into two phases of interest to the financial expert: the crisis phase and the reconstruction phase.

A. Crisis, Shock and Damage Control

A reputation crisis manifests itself as an event or series of actions that damage the perception of the company by its supporters, resulting in negative economic impacts. This period is marked by an initial shock, followed by measures to limit the damage. The crisis is often triggered by a scandal, public controversy or media incident.

In the crisis phase, there are many issues at stake for the company: restoring credibility, regaining immediate consumer confidence, and avoiding loss of sales. To minimize damage, the company needs to react quickly by implementing structured crisis management. The costs associated with this period are numerous:

• Crisis management: specialist consultants and crisis units
• Communication: investment in advertising, public relations and social networking campaigns to restore image
• Personnel costs: mobilization bonuses for crisis management teams and additional costs for recruiting communications or PR experts

These costs, as we shall see later, are part of a compensable loss.

B. The Long Haul: Reconstruction

The image reconstruction phase takes place once the peak of the crisis has passed. It is a long-term process that involves redefining and restoring the company's image through structured, long-term actions. As Warren Buffett's quote reminds us, the company once again starts a long period during which investments will be needed to rebuild what has been destroyed or damaged.

This reconstruction may involve an intensive media plan, a change of logo or even a change of name in cases where the association with the event is too strong. This strategy is common to all companies that have suffered these crises. In France, for example:

• After the "horsemeat" scandal,⁶ Spanghero was renamed La Lauragaise
• Orpéa was renamed Emeis following the scandal about management conditions in retirement homes
• Germanwings became Eurowings after a crash deliberately provoked by the co-pilot
• France Telecom became Orange after a wave of suicides in the company

During the reconstruction period, additional costs should not be forgotten, including human resources costs (an image crisis can affect employee morale and make it difficult to recruit new talents), and cost of debt (banks and investors may perceive the company as a higher risk, thereby increasing the cost of borrowing).

II/ The Financial Expert's Approach: Characterization of the Prejudice

The financial expert's context is as follows: a company has suffered damage to its reputation and is seeking compensation for this damage. In many cases, compensation will be sought through the courts, from the legal or natural person who caused the damage. The financial expert, tasked with establishing the quantum of the damage, must adopt an audit approach to understand the company's context, and then focus on building up a body of evidence to characterize the damage.

A. An Audit Approach

The Financial Expert follows a detailed audit approach based on an in-depth understanding of the company's internal and external environment. It's not just a question of analysing financial performance, but of understanding all the dynamics underlying brand perception and the company's responses to crisis events.

The audit process begins with a contextual analysis that explores the company's history, sector of activity, core values and strategic focus. The Expert's objective is to set a quantum that enables full compensation to be paid to the victim company, all other things being equal — the Expert must not allow the company to "enrich itself" because of the compensation.

Next, the Expert deploys structured questionnaires and targeted interviews with key stakeholders, including managers, employees, and sometimes even customers or partners — essentially, the company's market, the very people with whom it can no longer communicate.

B. A Clustering Method

Characterizing the damage is the central point of an image damage assessment report. The Expert must be careful not to confuse quantification with characterization of the loss:

Concept	Definition	Purpose
Characterization	Demonstrating that the loss exists	Get the Court to admit the harm is real
Quantification	Indicating the amount that enables the victim to return to status quo ante	Establish the financial quantum of the damage

Among the financial elements available to characterize damage:

• Stock market price: In 2019, AMO Strategic Advisors published a study⁷ showing that corporate reputation accounts for 35.3% of the market capitalization of the companies studied, equivalent to almost $16.8 trillion (USD). A fall in share price uncorrelated with the reference market could be a sign of a negative and damaging event.
• Cost of debt: An increase in borrowing costs during the crisis or reconstruction period is evidence of a detrimental event.
• PR Value: This measure evaluates the effect of media coverage on brand sentiment, measuring both the volume ("media noise") and tone (positive vs. negative) of press articles. If negative articles outweigh positive ones from the date of infringement, the Expert has a strong argument to characterize the prejudice.

III/ Calculating Corporate Reputation Damage

While damage to reputation requires a specific methodology — notably with the need to characterize the damage — the quantification itself is of a classic nature. The Expert will endeavour to evaluate the gains lost (lucrum cessans) and/or the losses suffered (damnum emergens). There are immediate costs of damage and costs of rebuilding the reputation.

A. Immediate Costs of Damage and Loss of Revenues

The immediate costs of damage are those that arise in the first part of this chronology: the crisis phase. These include legal, litigation and communication costs, which can be grouped in a "litigation costs package". Financial expert fees would also be included in this package.

Next come costs that are more difficult to measure — notably those linked to the mobilization of top management. A real image crisis is likely to mobilize a company's highest hierarchical level. Subject to solid argumentation and tangible evidence, the Expert may consider that these are "non-amortized costs"¹⁰ corresponding to the allocation of part of the company's resources to work unrelated to its operating process.

Employees (not from Management) are also company stakeholders. Several listed companies have recently introduced indicators to measure employees' perception of the company's image. Employees who don't have a good image of their company are more likely to leave — and if they leave, they must be replaced, at cost. The Expert could, for example, compare the evolution of salaries offered before and after the crisis to highlight an increase demonstrating the company's efforts to restore its attractiveness.

For investors, an image crisis is likely to erode support, translating into higher financing costs. The Expert could compare the cost of credit before and after the damage: the difference, all other things being equal, would be the result of the harmful event.

Then there's the question of lost profits. Damage to image can result in customers being less attracted to the company's products. The costs and profit loss described above are directly linked to the crisis and can be detected very quickly after the prejudice has occurred, which is why they are classified as "immediate costs" — though they will last for a long time, probably until the company manages to restore its reputation.

B. Investments to Restore Reputation

The costs of rebuilding a company's image are sometimes out of sync with the period of crisis — the company may be unable to communicate effectively during peak crisis, delaying restoration investments. These costs include:

• Marketing costs
• Media buying for advertising campaigns
• Communication costs
• Logo change, change of slogan, change of graphic charter

Experience has shown that, following an image loss, the company no longer communicates solely on its products but also on its values, since these have been attacked by the loss. As a result, the company incurs costs for a corporate campaign. After the "dieselgate" affair, the Volkswagen Group changed its slogan¹¹ and launched a "corporate" advertising campaign presenting the Group's new strategy — featuring no products, so no commercial spin-offs were possible.

IV/ Tools Available to the Expert

The Expert in charge of assessing reputation damage has a wide range of tools at his disposal. Among these, we will examine the classic ones, as well as more recent tools from spheres beyond traditional finance.

A. Classic Tools — The Counterfactual Scenario

The construction of an actual and counterfactual scenario makes it possible to model the impact of the damage. The actual scenario corresponds to the company's financial performance including the damage, whereas the counterfactual scenario reflects the performance the company should have achieved in the absence of the said damage. The difference between the two corresponds to the damage, "all other things being equal".¹²

The Expert will have to decide on three key dates:

• The date on which the damage began — distinguishing between the legal triggering event (the date the harmful facts are committed) and the financial starting point (when the facts are revealed)
• The end date of the damage — when the company returns to a normal situation, which is particularly complex for reputation damage given residual long-term effects
• The damage assessment period — under French law, this date is that of the judgment, to guarantee full compensation

Note: Figures are illustrative only. Under French law, past losses are capitalized to the judgment date to guarantee full compensation. The period July–December 2023 was excluded as damages could not be entirely linked to the prejudice.

B. The New Tools

The Reptrak model⁹ measures reputation based on seven indicators: product quality, innovation capacity, employee relations, ethical conduct, societal impact, leadership, and financial performance. From there, the Expert could use the model — comparing it before and after the loss — to understand which indicator has fallen and better target the costs incurred.

The Expert can also use the media equivalence method. The basic idea is to measure media noise and its general sentiment, then estimate how much this media coverage would cost at that tone. To rebuild the image, the company will have to spend at least the same amount on media to cancel the negative effects. Other "marketing" costs could also occur, such as changes to logos and colors.

Finally, the Expert could conduct sentiment analysis using text mining methods. Text mining refers to the process of analyzing and extracting meaningful information from large quantities of unstructured text. A sentiment analysis carried out using the TextBlob library¹⁴ evaluates:

Metric	Description	Use for the Expert
Polarity	Degree of positivity/negativity of the text (−1 to +1)	Detect negative shift in media coverage from the date of infringement
Subjectivity	Degree of objectivity (0 = objective, 1 = subjective)	Identify opinion-heavy coverage driving perception
Sentiment	Overall tendency (positive vs. negative)	Track recovery of brand sentiment over time

These tools can be used both for the characterization stage and for estimating the loss.

Conclusion

The crucial importance of a company's reputation and image in the modern business landscape is indisputable. Warren Buffett rightly points out that reputation, built up over time, can be destroyed in an instant. As an integral part of the broader concept of corporate image, reputation is of major strategic importance.

This issue is the responsibility of corporate governance, who must address it before any damage is done, with a reputation monitoring policy. It should also be noted that the rise of generative artificial intelligence is only reinforcing the reputational risk for companies, with the risk of "deepfakes" in particular.

Clearly, these types of damage are likely to multiply, and with them the question of damage assessment.

The aim of this methodological proposal is not to describe what needs to be done, but rather to propose a framework or toolbox for rationalizing and objectifying the quantification of financial loss in case of corporate reputation harm — which is currently more a matter of trying to obtain additional compensation than real compensation for the full damage suffered.

The growing importance of this subject means that financial Experts need to be trained in these matters and to apply a rigorous method, as they do for other types of damage.