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D&O and Board Liability

保険 財産・賠償責任 6 分で読める · 最終レビュー日 August 25, 2026

教育的なリファレンスです。投資・法律・税務・保険・会計に関する助言ではありません — 特定のファミリーへの適用については、有資格の専門家にご評価いただく必要があります。

30秒でわかる

When you sit on a board, you take on legal responsibility for the decisions made there — and that responsibility can follow you personally if something goes wrong. D&O insurance is designed to protect individuals in those roles from bearing the financial cost of lawsuits, regulatory actions, and settlements out of their own pocket. Coverage comes in distinct layers, commonly called Side A, Side B, and Side C, each addressing a different scenario. Corporations can also promise to indemnify (repay) directors, but indemnification is only as strong as the company offering it. Understanding both tools — and their limits — is essential diligence before accepting any board seat.

Why Board Seats Carry Personal Risk

A board director is not a passive observer. Directors owe legal duties — most commonly a duty of care (acting with reasonable diligence) and a duty of loyalty (putting the organization's interests ahead of personal ones) — to the entity they serve and, depending on the type of organization, to shareholders, regulators, or the public. When those duties are alleged to have been breached, directors can be named personally in lawsuits, regulatory investigations, or government enforcement actions.

For families with substantial wealth, board service is common. A founder may retain a board seat after selling her company. A family member may join the board of a privately held portfolio company, a private foundation, or the family office itself. Each of those seats is a distinct source of personal liability, and each deserves its own analysis before the seat is accepted.

Indemnification: The First Layer of Protection

Indemnification is a promise by an organization to reimburse a director for legal costs, judgments, and settlements arising from their board service. Most corporations and larger nonprofits provide indemnification through their bylaws or a separate indemnification agreement. In many jurisdictions, organizations are permitted — and sometimes required — to indemnify directors who acted in good faith.

The critical limitation is counterparty risk. Indemnification is only as strong as the organization making the promise. If a company becomes insolvent precisely because of the events that triggered the lawsuit, the indemnification agreement may be worth very little. This is the scenario D&O insurance is specifically designed to address — and it is why insurance and indemnification are treated as complementary, not interchangeable, forms of protection.

Directors should ask to review the specific indemnification agreement — not just the bylaws — and understand whether it covers legal fees as they are incurred (an "advancement" provision) or only after a final resolution. A qualified attorney should review any such agreement before a seat is accepted.

D&O Insurance: The Three Sides

Directors and officers insurance is typically structured in three coverage components, referred to in the industry as Side A, Side B, and Side C. Understanding what each covers helps directors and their advisers evaluate whether a policy genuinely protects them.

Side A: Direct Protection for the Individual

Side A coverage pays the director or officer directly when the organization cannot or will not indemnify them. This is often the most important layer for individual directors, because it responds precisely when indemnification has failed — for example, in a bankruptcy, or when a court determines that indemnification is not permitted for certain conduct. Some directors and family offices purchase standalone Side A policies as an additional layer of personal protection, independent of the company's broader D&O program.

Side B: Reimbursing the Organization

Side B coverage reimburses the organization itself after it has indemnified a director. The company pays the director's defense costs and losses, and then the insurer reimburses the company. This protects the organization's balance sheet from large, unexpected indemnification payments.

Side C: Entity Coverage

Side C coverage — sometimes called "entity coverage" — protects the organization itself when it is named as a defendant alongside its directors and officers, most commonly in securities claims against public companies. For directors serving on private company or nonprofit boards, Side C is less central, but it still affects how the overall policy limit is shared between the entity and the individuals.

A useful mental model: Side A protects the person, Side B protects the company's promise to protect the person, and Side C protects the company itself. When a single policy limit covers all three, individual directors should understand that entity claims could exhaust the limit before personal claims are fully paid.

Nonprofit and Foundation Board Exposure

Board service at a nonprofit — including a private foundation — carries its own distinct risks. Foundation board members (often called trustees or directors) are subject to governance and compliance requirements enforced by the IRS and state attorneys general. Violations of rules prohibiting self-dealing, excessive compensation, or improper grants can result in excise taxes levied personally against foundation managers who approved the transaction.

Many smaller nonprofits and family foundations carry modest D&O coverage — or none at all — and their directors may assume they are protected without verifying. A family member serving on a foundation board should confirm that adequate coverage exists and review the policy's exclusions, particularly around self-dealing allegations, which are sometimes excluded or sublimited.

For families managing philanthropic activities with significant assets, this topic overlaps directly with family office governance structures, since the same individuals often serve in multiple fiduciary capacities simultaneously.

Private Company and Family Office Boards

Private companies — portfolio companies, operating businesses, and joint ventures — may carry D&O coverage, but the quality and limits vary widely. Directors joining a private board as part of a co-investment or direct investment arrangement should ask specifically about the D&O program before agreeing to serve. This is especially relevant for family members or family office staff who may be asked to take observer or full director seats as a condition of an investment.

Family offices that operate as formal legal entities with their own governance boards create another layer of potential exposure for the individuals serving on those boards. As noted in coverage of family office governance, the fiduciary duties owed within the family office structure deserve explicit attention — and the D&O coverage protecting those roles should be reviewed with the same rigor applied to any external board seat.

Diligence Before Joining Any Board

Accepting a board seat without reviewing the organization's liability protection is a common and avoidable mistake. Before joining, families and their advisers may consider evaluating several areas:

  • Does a D&O policy exist? Obtain a copy of the declarations page and any relevant policy documents, not just assurances that coverage is in place.
  • What are the limits, and how are they shared? A low aggregate limit shared among all three sides can leave individual directors exposed when entity claims arise.
  • What are the exclusions? Common exclusions include fraud, intentional misconduct, claims between insured persons, and — in some policies — regulatory investigations. Each exclusion deserves scrutiny.
  • Is there an advancement provision? Legal defense costs often arise before any claim is resolved. Knowing whether the policy or indemnification agreement covers costs as they accrue matters enormously in practice.
  • How is the coverage coordinated with personal umbrella coverage? D&O policies and umbrella and excess liability policies can interact in ways that are not always obvious. A qualified insurance adviser should map the coverage layers.
  • What is the organization's financial health? An indemnification agreement backed by a financially distressed entity provides limited real-world protection.

A qualified attorney should review any indemnification agreement, and a licensed insurance professional should assess the adequacy of the D&O program, before a board commitment is made.

Common Mistakes and Questions to Ask

Directors sometimes assume that good intentions — or the fact that they serve without compensation — insulates them from liability. In most jurisdictions, unpaid volunteer directors are still subject to the same legal duties as compensated ones, though some states have limited volunteer liability statutes for nonprofit service. The scope of those protections varies and should not be assumed without legal review.

Another frequent oversight is failing to update personal coverage after joining a new board. A family member who adds two or three board seats over a period of years may find that their personal coverage landscape has changed materially. Periodic review of all board service — and the coverage associated with each seat — is a discipline worth building into regular advisory conversations, particularly as addressed in resources on building an advisory team.

Questions worth asking before any board commitment include: Who has been sued on this board before, and for what? What litigation or regulatory matters are currently pending? Who decides whether to advance legal fees, and how quickly? Can I be removed from the policy mid-term without notice?

テクニカルな考慮事項

弁護士、CPA、受託者、投資専門家の方へ — このトピックについて実務家が検討する連携ポイントと法理をまとめています。

Practitioners advising directors on D&O exposure navigate several overlapping doctrinal and drafting considerations that affect real-world protection.

On the indemnification side, the distinction between permissive and mandatory indemnification under state corporate law (most commonly Delaware) matters significantly. Mandatory indemnification provisions in bylaws or certificates of incorporation create enforceable contractual rights; permissive language leaves discretion with the board — potentially the same board adjudicating the underlying dispute. Standalone indemnification agreements, executed before a director joins, generally provide stronger protection and may include mandatory advancement of fees pending resolution.

Policy drafting issues that professionals commonly flag include:

  • Insured-versus-insured exclusions: Many policies exclude claims brought by one insured against another. This exclusion can be triggered in disputes between co-directors or between a director and the entity, significantly narrowing coverage in intra-company litigation.
  • Conduct exclusions and severability: Fraud and intentional misconduct exclusions are standard, but the severability provision determines whether one director's excluded conduct voids coverage for co-defendants. Poorly drafted severability clauses can leave innocent directors exposed.
  • Claims-made versus claims-made-and-reported structure: D&O policies are almost universally written on a claims-made basis. Tail coverage (an "extended reporting period") must be negotiated when a director resigns or a company is acquired — gaps are common in M&A contexts.
  • Coordination with Side A DIC policies: Difference-in-conditions (DIC) Side A policies, sometimes purchased separately by family offices or individuals, are intended to drop down when the primary policy is exhausted or rescinded. The interaction between primary and DIC terms requires careful drafting review.
  • Foundation-specific considerations: Excise taxes imposed under private foundation rules are generally not insurable losses under most policies. Coverage for regulatory defense costs — as distinct from the tax itself — should be verified explicitly.

CPAs should note that advancement payments to directors may have income tax implications depending on the indemnification structure. Coordination with estate counsel is appropriate when directors also hold personal liability exposure through trust or family office fiduciary roles.

ファミリーがよく聞く質問

Does serving as an unpaid volunteer on a nonprofit board protect me from personal liability?

In many jurisdictions, volunteer director liability statutes offer some protection for unpaid nonprofit board members, but the scope of those protections varies considerably by state and circumstance. Allegations of self-dealing, gross negligence, or regulatory violations may fall outside the protection of volunteer immunity statutes. A qualified attorney familiar with the relevant state's nonprofit law should assess the actual exposure before a seat is accepted.

If a company promises to indemnify me, do I still need D&O insurance?

Indemnification and D&O insurance serve different purposes and work best together. An indemnification promise is only as reliable as the financial health of the organization making it — if the company becomes insolvent or a court limits indemnification in a specific case, the promise may not be honored. D&O insurance, particularly Side A coverage, is designed precisely for those scenarios, paying the director directly when indemnification has failed or is unavailable.

Can the family office purchase D&O coverage for family members serving on outside boards?

Some family offices do maintain D&O programs that extend to certain outside board activities by family members or staff, but the scope depends entirely on the specific policy terms and how those roles are defined. Coverage for outside directorships is sometimes available as an endorsement or a separate policy, and qualified insurance counsel should assess both what is currently in place and what gaps may exist across all board positions held by family members.

What happens to my D&O coverage when I resign from a board?

D&O policies are written on a claims-made basis, meaning they generally cover claims made while the policy is in force — not claims arising from events that occurred during board service but filed after the policy ends or after you leave. When a director resigns, it is important to confirm whether the policy provides a "tail" or extended reporting period that continues to cover post-resignation claims related to past board service. Failing to secure tail coverage is a common and consequential oversight that a qualified insurance adviser should address proactively.

出典と方法:方法論ページに記載された編集方針に基づいて執筆し、上記の日付時点で内容を確認しています。個別アドバイスの提供は行いません。現行の法令および数値については、資格を持つ専門家にご確認ください。 調査手法 · 編集方針

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大きな資産の管理 資産残高( $10M資産残高( $25M資産残高( $50M資産残高( $100M資産残高( $250M資産残高( $500M資産残高( $1B+

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