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AON
NYSE Finance

Aon Prices $13.5B Seven-Tranche Notes Offering to Fund $17B USI Acquisition

Arie Shkolnikov · Analysis by Wiseek AI
More coverage: Insurance Stocks · Financial
Sentiment info
Neutral
Importance info
7
Price
$304.67
Mkt Cap
$64.628B
52W Low
$302.44
52W High
$382.34
52W Position info
0.7% above low
Off High info
20% below high
Rel. Volume info
1.2× avg
Market data snapshot near publication time

AON is trading near its 52-week low of $302.44 (0.7% above the low).

Summary

Aon priced $13.5 billion in seven-tranche senior notes to fund its $17 billion USI acquisition, with coupons from 5.350% to 6.450% and a Special Mandatory Redemption at 101% if the deal fails to close by June 1, 2027.


Key Events · Financing and Capital Events · AON

  • $13.5B Notes Offering Priced

    Seven tranches totaling $13.5 billion priced with coupons from 5.350% (2029) to 6.450% (2046/2056), generating net proceeds of approximately $13.4 billion.

  • Funds $17B USI Acquisition

    Proceeds will pay the cash consideration for the USI Insurance acquisition, repay USI's $4.3 billion existing debt, and cover transaction fees.

  • Special Mandatory Redemption

    If the USI acquisition is not consummated by June 1, 2027 (subject to extensions), Aon must redeem the USI Acquisition Notes at 101% of principal plus accrued interest.

  • Pro Forma Debt Rises to $42.8B

    After the offering and related financing, consolidated indebtedness would be approximately $42.8 billion, with Aon targeting deleveraging to 2.8-3.0x EBITDA within 24 months.


Analysis · AON · Finance

Aon finalized pricing on its $13.5 billion senior notes offering, locking in coupons from 5.350% to 6.450% across seven tranches maturing 2029 through 2056. Net proceeds of approximately $13.4 billion will fund the $17 billion USI Insurance acquisition, with a Special Mandatory Redemption at 101% if the deal fails to close by June 1, 2027. The offering adds roughly $13.5 billion in debt to Aon's balance sheet, pushing pro forma consolidated indebtedness to approximately $42.8 billion — a significant leverage increase that management plans to deleverage to 2.8-3.0x EBITDA within 24 months. The pricing is consistent with the FWP filed yesterday, confirming the deal terms without material deviation.

How filings like this one have moved

In the 30 days to Oct 2, 2026, 29.9% of the 1661 measured filings Wiseek scored 7 moved their stock by 5% or more by the next session's close. The median move was -0.57%. These are measured outcomes after filings of this importance, not a forecast for this one.

Measured one observation per ticker per day, after exclusions. Current figures: Filing Impact Tracker · open dataset

At the time of this filing, AON was trading at $304.67 on NYSE in the Finance sector, with a market capitalization of approximately $64.6B. The 52-week trading range was $302.44 to $382.34. This filing was assessed with neutral market sentiment and an importance score of 7 out of 10.

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AON - Latest Insights

AON
Sep 22, 2026, 6:30 AM EDT
Filing Type: 8-K
Importance Score:
7
Price at Filing: $295.60
Real-time Price: $276.11 info
Change: -$19.49 (-7%) info
Market Cap: $58.536B info
AON
Sep 17, 2026, 5:21 PM EDT
Filing Type: 8-K
Importance Score:
7
Price at Filing: $295.51
Real-time Price: $276.11 info
Change: -$19.40 (-7%) info
Market Cap: $58.536B info
AON
Sep 14, 2026, 5:24 PM EDT
Filing Type: FWP
Importance Score:
7
Price at Filing: $311.00
Real-time Price: $276.11 info
Change: -$34.89 (-11%) info
Market Cap: $58.536B info
AON
Sep 14, 2026, 1:53 PM EDT
Source: Reuters
Importance Score:
7
Price at Filing: $309.29
Real-time Price: $276.11 info
Change: -$33.18 (-11%) info
Market Cap: $58.536B info
AON
Sep 11, 2026, 9:29 AM EDT
Filing Type: 424B5
Importance Score:
7
Price at Filing: $307.77
Real-time Price: $276.11 info
Change: -$31.66 (-10%) info
Market Cap: $58.536B info