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📋 '''Post-closing adjustment''' is a contractual mechanism in [[Definition:Mergers and acquisitions (M&A) | insurance M&A]] transactions that reconciles the purchase price paid at closing with the actual financial position of the acquired entity once final figures become available. Because insurance businesses carry complex balance sheets — with significant [[Definition:Loss reserves | loss reserves]], [[Definition:Unearned premium reserve | unearned premium reserves]], and embedded [[Definition:Investment portfolio | investment portfolios]] — the financial picture at closing is almost always based on estimates rather than audited figures. The post-closing adjustment bridges the gap between those estimates and the verified numbers that emerge weeks or months later, ensuring that neither the buyer nor the seller is unfairly advantaged by timing.

⚙️ The mechanics typically begin with the parties agreeing, in the [[Definition:Share purchase agreement (SPA) | purchase agreement]], on a set of reference metrics — often [[Definition:Net asset value (NAV) | net asset value]], [[Definition:Working capital | working capital]], or a combination of tangible book value and reserve adequacy measures. At closing, the buyer pays a price calculated on estimated values. After closing, the buyer prepares or commissions a detailed [[Definition:Post-closing adjustment statement | post-closing adjustment statement]] using actual data, which the seller then has the right to review and dispute. If the final figures exceed the estimates, the buyer pays the difference to the seller; if they fall short, the seller refunds the overpayment. In insurance deals, the adjustment window is particularly significant because [[Definition:Actuarial valuation | actuarial valuations]] of reserves and [[Definition:Incurred but not reported (IBNR) | IBNR]] liabilities can shift materially as more claims data becomes available, making the adjustment process both more consequential and more contentious than in many other industries.

💡 Getting post-closing adjustments right is critical for maintaining deal economics and preserving the relationship between buyer and seller during the transition period. In insurance transactions, disputes over reserve adequacy, the treatment of [[Definition:Reinsurance recoverable | reinsurance recoverables]], or the valuation of in-force policy blocks are common sources of post-closing friction. Parties frequently designate an independent [[Definition:Actuarial firm | actuarial firm]] or accounting expert to serve as an arbiter if they cannot agree on the final figures. Across jurisdictions — whether governed by U.S., UK, or Continental European deal conventions — the post-closing adjustment clause is one of the most heavily negotiated provisions in any insurance acquisition agreement, because the ultimate price can swing by millions depending on how reserve movements and premium flows are measured in the period surrounding the deal.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Post-closing adjustment statement]]
* [[Definition:Post-closing true-up]]
* [[Definition:Pre-closing price adjustment]]
* [[Definition:Completion accounts]]
* [[Definition:Net asset value (NAV)]]
* [[Definition:Loss reserves]]
{{Div col end}}

Definition:Post-closing adjustment - Revision history

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