The Three Insuring Agreements Inside Every D&O Policy

Why the Policy Structure Matters More Than You Think

Most business owners and even many board members think of D&O insurance as a single protective umbrella. It is not. Inside every standard D&O policy are three structurally distinct insuring agreements that respond to different parties, under different conditions, with different financial mechanics. Getting this wrong — assuming your company's D&O policy will automatically respond the way you expect — is how executives end up personally exposed or companies end up draining shared limits before individuals get protection.

This explainer breaks down each of the three agreements with precision. If you want the broader picture of what D&O insurance covers and excludes, start with this overview. Here, we go one level deeper into the policy architecture itself.

The three insuring agreements are universally labeled Side A, Side B, and Side C. Despite this tidy labeling, they are not sequential layers of protection — they are parallel tracks that respond to fundamentally different scenarios. Understanding which track applies to a given claim scenario is not an academic exercise. It determines who gets paid, when, and how much.

Side A: The Executive's Last Line of Defense

Side A is the insuring agreement that covers individual directors and officers directly — specifically when the company cannot or will not indemnify them. This is not a backup for ordinary situations. It is designed for circumstances where the corporate safety net has failed.

There are three primary scenarios where Side A becomes the operative coverage:

1. Corporate insolvency: If the company is in bankruptcy, it has no funds available to advance defense costs or pay settlements on behalf of its executives. Side A steps in directly.
2. Legal prohibition: Some jurisdictions prohibit indemnification for certain categories of conduct — fraud, intentional misconduct, or violations of specific statutes. Where the law bars the company from indemnifying, Side A responds.
3. Board refusal: A board may determine, after investigation, that a specific officer acted outside the scope of conduct eligible for indemnification. Side A covers the individual even when the company has chosen not to.

Side A is the only insuring agreement under which the individual executive is both the insured and the direct recipient of payment. In Side B and Side C scenarios, the company is the entity receiving the insurance proceeds — not the individual.

The retention structure on Side A reflects this design. Most policies carry zero retention on Side A. Requiring a personal deductible from an executive who is already in a situation where their company cannot or will not pay would defeat the purpose entirely.

For a detailed comparison of how Side A interacts with Side B across different claim scenarios, this article covers the mechanics in depth.

Side B: Reimbursing the Company for Indemnification It Has Already Paid

Side B operates on a fundamentally different premise. The company has already stepped in — it has advanced defense costs, paid settlements, or satisfied judgments on behalf of its directors and officers. Side B then reimburses the company for those outlays.

This is the most commonly triggered insuring agreement in D&O claims. In the vast majority of cases, a solvent company will indemnify its executives as quickly as possible, which means Side A never comes into play. The claim flows through Side B instead.

The financial logic here is important to understand: Side B does not protect individuals. It protects the company's balance sheet. When a corporation advances $4 million to defend its CEO in a shareholder derivative suit, that $4 million comes off the company's books. Side B restores it. Without this coverage, a single significant D&O claim could materially impair corporate liquidity — even for companies with healthy balance sheets.

Side B retentions are typically substantial — ranging from $250,000 to several million dollars for mid-to-large companies — because the company is in a position to absorb the first layer of loss. This stands in sharp contrast to the zero-retention structure on Side A.

One critical risk is often overlooked: in a shared-limit policy, a protracted Side B claim can erode the aggregate limit significantly, leaving less coverage available for Side A claims. If the company is indemnifying executives through a large, expensive securities case and simultaneously faces insolvency, the remaining Side A coverage may be insufficient. This is the primary argument for purchasing a standalone Side A policy with a dedicated limit — a structure that we explore in the full D&O landscape resource.

Side C: Entity Coverage for Securities Claims

Side C is the most frequently misunderstood of the three insuring agreements — largely because it applies to a narrower set of circumstances than most people assume. Side C provides coverage to the company itself for securities claims: specifically, claims alleging misrepresentation, omissions, or fraud in connection with the purchase or sale of the company's securities.

This insuring agreement exists primarily because securities class actions routinely name both the company and individual executives as defendants. Without Side C, the company would be an uninsured party sitting alongside insured individuals in the same litigation.

However — and this is critical — Side C is almost exclusively a public-company construct. The coverage trigger requires publicly traded securities. Private companies do not issue publicly traded shares, so the standard Side C trigger essentially never fires for them. If you operate a privately held business and your broker is pitching you on Side C as a selling point, ask them to explain the specific claim scenario under which it would respond. Be skeptical if the answer is vague.

Private companies should instead look at whether their policy includes entity coverage for non-securities claims — employment practices, regulatory actions, or derivative suits — which may be added by endorsement rather than through Side C. Private company D&O has a distinct risk profile that warrants a separate conversation altogether.

For public companies, Side C adds a meaningful layer of protection, but it also introduces a significant tension: the company's interest in settling quickly may conflict with individual executives' interest in fighting for exoneration. When Side C limits and Side A/B limits are shared, this tension can produce conflicts between the company and its insured individuals over how to manage the claim.

“The Side A/B/C structure is elegant in theory and treacherous in practice. The moment a company faces insolvency, the interaction between these three insuring agreements becomes the most important — and least understood — aspect of the entire policy.”

— Richard Bortnick, Insurance coverage attorney and D&O litigation specialist

How the Three Sides Interact in a Real Claim

Understanding each side in isolation is useful. Understanding how they interact under actual claim conditions is essential.

Consider a public company facing a securities class action. The plaintiff class alleges that the CEO and CFO made materially false statements about earnings. The company and both executives are named as defendants.

• Side C responds to the company's defense costs and any settlement attributed to the entity's securities-related liability.
• Side B responds as the company advances defense costs for the CEO and CFO, then seeks reimbursement from the insurer.
• Side A remains dormant — unless the company becomes insolvent during the litigation, at which point it activates to protect the individuals directly.

Now change the scenario: the company enters bankruptcy midway through the litigation. The bankruptcy estate cannot advance defense costs. Side B shuts off — there is no indemnification to reimburse. Side A activates. If the aggregate limit has been heavily eroded by Side B and Side C claims, the remaining coverage for Side A may be inadequate. This is not a theoretical scenario — it has played out repeatedly in high-profile corporate collapses.

The takeaway is structural: coverage for individuals is safest when Side A has a dedicated, non-erodable limit. This is typically achieved through a standalone Side A DIC (Difference in Conditions) policy, which sits above or alongside the primary D&O tower and responds specifically to scenarios where the primary policy cannot or will not pay Side A claims. The interaction between base coverage and supplemental riders follows similar logic across many policy types.

Retentions, Sublimits, and the Policy Architecture You Need to Review

Every D&O policy has an aggregate limit — the maximum the insurer will pay across all insuring agreements combined. How that limit is structured matters enormously.

A shared aggregate limit means that large Side B or Side C claims can erode the pool of coverage available to individuals under Side A. For companies where this risk is material — large cap public companies, companies in volatile sectors, companies with prior claims history — a standalone Side A policy with its own independent limit is not a luxury. It is a structural necessity.

When reviewing your D&O policy, also look carefully at the definition of Loss under each insuring agreement. Some policies include punitive damages and fines within the definition for Side A purposes but exclude them under Side B or C. The distinction between liability and indemnity coverage is directly relevant here — what the policy covers versus what the company owes can diverge in ways that create unexpected gaps.

Finally, examine the conduct exclusions. Fraud and deliberate misconduct exclusions in D&O policies are typically written to apply only after a final, non-appealable adjudication of the excluded conduct. This means defense costs are generally covered during litigation — even if the executive is ultimately found liable. However, the precise language varies significantly by carrier, and some policies apply these exclusions at the claim stage rather than the adjudication stage, which can produce very different outcomes.

What This Means for Your Coverage Decision

If you are a board member, executive, or risk manager evaluating a D&O program, here is what the three-agreement structure demands of you practically:

1. Confirm Side A has zero retention. If your policy imposes a retention on Side A, push back. This is a coverage design flaw that exposes individuals.
2. Understand your aggregate limit structure. Is the limit shared across all three sides? If so, run a scenario where Side B or C claims consume the majority of the limit. Is the remaining Side A coverage adequate?
3. Assess whether a standalone Side A DIC policy is warranted. For any company where insolvency is a credible scenario — highly leveraged businesses, early-stage companies, companies in distressed sectors — this is worth serious consideration.
4. For private companies: verify what entity coverage you actually have. If your policy doesn't include Side C (which it likely shouldn't), confirm whether entity coverage for non-securities claims is available by endorsement.
5. Read the conduct exclusion language carefully. Specifically, identify whether exclusions apply at the claim stage or adjudication stage. The difference is material.

D&O policy language is dense and the distinctions between insuring agreements are easy to gloss over — until a claim makes them impossible to ignore. For a comprehensive look at how these policies are priced, structured, and how claims actually play out, the full D&O insurance landscape resource is the right next step.