Aon Announces Definitive $17 Billion Acquisition of USI from KKR

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Aon Announces Definitive $17 Billion Acquisition of USI from KKR

corporate_actionannounced2026-09-02 19:35:37 UTCimp 0.84KKR +0.72AJG -0.48BRO -0.44

Aon plc announced that it had signed a definitive agreement to acquire USI Insurance Services from private-equity firm KKR and its co-investors for total consideration of $17 billion, including debt. USI generates approximately $3 billion in annual revenue, and Aon expects the transaction to generate $395 million in annual run-rate net adjusted EBITDA impact from revenue and cost synergies, with adjusted-EPS accretion projected in 2028. The transaction has been announced but is not described as closed.

Occurred 2026-08-31 10:31:54 UTCSurprise 0.45Confidence 0.95
Rationale

The Reuters-supported item reports that Aon will acquire rival USI Insurance Services from KKR for $17 billion, while the corroborating context states that Aon signed a definitive agreement. This is a new, forward-looking M&A milestone distinct from the prior-day report that the parties were only nearing an agreement; it has direct implications for Aon’s expected scale and synergies, KKR’s investment realization, and competition among major insurance brokers. The transaction is announced but not described as closed, and the exact occurrence time is not independently stated, so the Reuters wire timestamp is used as an estimate. Surprise is moderated because the deal was publicly reported as imminent the previous day. AON, KKR, and directly exposed brokerage peers AJG, BRO, MMC, and WTW are approved; carriers and wholesale brokers are excluded because their supplied impacts are indirect or lack USI-specific evidence.

EventsAon’s Potential Acquisition of USI Insurance from KKR
Evidence
Aon to buy USI Insurance Services in $17 billion deal
reuters2026-08-31 10:31:54 UTCOpen source
Aon NYSE:AON will buy rival USI Insurance Services in a $17 billion deal from private equity firm KKR NYSE:KKR, the insurance brokerage said on Monday.
KKR Expects $3.3 Billion Gain From USI Sale — WSJ
dow_jones2026-08-31 12:49:00 UTCOpen source
KKR says it's set to reap $3.3 billion in after-tax proceeds from its $17 billion sale of insurance brokerage USI to Aon.
The companies unveiled the agreement Monday
KKR Scores Windfall in $17B Sale of USI Insurance
bloomberg2026-09-02 19:09:29 UTCOpen source
KKR is set to reap a $3.3 billion windfall from its deal to sell USI Insurance Services to Aonfor $17 billion, a significant exit for a unit that’s invested its balance sheet in long-term private equity bets.