Reporting the Results of an Internal Corporate Investigation

Lesley Brovner & Mark Peters
March 18, 2026

Once an internal corporate investigation concludes, the next critical step is determining how the findings will be communicated. The investigation report—whether written or delivered orally—serves as the official record of what occurred, how the investigation was conducted, and what actions should follow.

Decisions about preparing and distributing the report involve strategic considerations, including privilege protection, regulatory expectations, and the potential for future litigation. Careful planning ensures the report achieves its objectives while minimizing unnecessary risk.

Deciding Whether to Prepare a Written Investigation Report

One of the first questions counsel must address is whether to produce a written report at all.

Written reports carry a risk: they may later become discoverable in civil litigation or regulatory proceedings. For this reason, some investigations conclude with an oral presentation to the board of directors or a designated committee instead of a written document. In those cases, meeting minutes typically note that legal advice was delivered confidentially without repeating the substance of the findings.

However, written reports often provide significant advantages. A detailed report can:

Serve as a roadmap for implementing corrective actions
Document the thoroughness of the investigation
Support insurance claims or recovery actions
Demonstrate cooperation with regulators

When regulatory agencies, courts, or derivative litigation are involved, a written report is often necessary to support legal defenses or settlement negotiations.

Determining Who Should Receive the Investigation Report

Another key consideration is identifying the report’s intended recipients. Distribution affects both the tone and the level of detail included in the document.

In many cases, the investigative charter or governing authority dictates who receives the report.

Common recipients include:

The board of directors or a special committee overseeing the investigation
Regulatory agencies involved in related inquiries
Courts supervising consent decrees or enforcement actions

If regulators request access to the report, counsel may attempt to limit disclosure risks by providing a redacted version that removes sensitive identifying information while allowing regulators to review necessary details.

In some situations—particularly where findings are material to corporate operations—summary information may also need to be disclosed in regulatory filings.

Structuring the Investigation Report

A well-structured report improves credibility and helps readers understand both the investigative process and the conclusions reached.

Most internal investigation reports include several core sections:

An overview of the investigation
Background and authority for the inquiry
Scope of the investigation
Description of investigative procedures
Findings of fact
Legal considerations where appropriate
Recommendations for corrective action

The description of the investigative process should be sufficiently detailed to demonstrate the investigation’s rigor. This may include the number of witnesses interviewed, documents reviewed, and experts consulted.

Choosing the Appropriate Level of Detail

The amount of detail included in a report depends largely on its intended use.

Highly detailed reports may be required when the goal is to persuade regulators or courts that the investigation was comprehensive and independent. These reports often include extensive factual narratives and documentation of investigative techniques.

For purely internal purposes, however, a more concise report may be appropriate.

When a report may become public—such as through regulatory filings—companies often avoid unnecessary disclosure of trade secrets or sensitive information while maintaining accuracy and transparency.

Should Individuals Criticized in the Report Be Allowed to Comment?

Before finalizing a report, counsel may consider allowing individuals who are criticized in the findings to review relevant portions and provide comments.

This approach offers several advantages:

Correcting factual inaccuracies
Considering alternative explanations or perspectives
Demonstrating fairness in the investigative process

However, the process also carries risks. Draft circulation may lead to delays, leaks, or legal challenges attempting to block publication.

If comments are solicited, it is generally advisable to allow only one round of feedback and limit each individual to reviewing the sections relevant to their conduct.

Drafting Techniques for Investigation Reports

Preparing a clear and defensible report requires careful coordination among investigative team members.

Best practices include:

Assigning subject-matter sections to the lawyers who conducted the relevant investigation
Having a senior attorney edit the entire document for tone and consistency
Conducting internal peer review to identify inconsistencies or gaps
Including citations to investigative records during drafting

Maintaining a confidential version with citations to supporting evidence can be invaluable if the findings are later challenged.

To preserve the credibility of the investigation, it is generally preferable that the report be issued by independent investigative counsel rather than in the name of the board itself.

Why Draft Investigation Reports Should Be Preserved

It may be tempting to destroy earlier drafts once the final report is completed. However, doing so can create legal risks.

Courts require parties to preserve relevant materials once litigation is reasonably anticipated. This obligation includes electronic documents and draft reports. Destroying drafts may expose the company to sanctions or adverse inferences in litigation.

Because investigation reports prepared by counsel often qualify as privileged work product, it is typically safer to preserve draft versions within the company’s document retention framework rather than risk accusations of improper document destruction.

How Peters Brovner Assists with Internal Investigation Reports

The investigation report is often the most scrutinized element of an internal inquiry. Peters Brovner works with boards, executives, and compliance teams to prepare investigation reports that are accurate, defensible, and strategically structured for regulatory and litigation environments.

Our attorneys help organizations navigate complex reporting decisions while preserving privilege, protecting sensitive information, and ensuring that investigative findings support informed corporate action.

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Internal investigations do not end when the fact-finding concludes—the way the results are reported can significantly affect regulatory exposure, litigation risk, and corporate governance decisions. Peters Brovner advises boards and general counsel on preparing investigation reports that withstand scrutiny and support sound decision-making.

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