AON Aon (AON) Insider Trading, Ownership & Congress Trades
Insurance · Insurance agents, brokers & service · CIK 0000315293
SEC filings
House members buying, 1 year
0
STOCK Act, US House only, disclosed up to 45 days after the trade
Funds added, last quarter
615
13F, latest reported quarter
Conversions, 180 days
1
Codes C/M, not in net · no price filed
What the filings say about AON
Insiders, 180 days
+$4.9M net bought
1 buyer · 1 seller · 0% of sales under a 10b5-1 plan
Congress, 1 year
No trades
Last one: purchase, 2025-05-27
Aon insider trades (Form 4)
Form 4 buys and sells (codes P and S). Grants, option exercises
and conversions excluded.
Over the last 180 days, Aon plc insiders bought a net $4.9M of stock across 73 Form 4 purchases and sales, with 1 insider buying. Source: SEC Form 4 filings, as of 2026-10-27.
Insider
Filed
Shares
Value
Since filing
Context
- 11 earlier Form 4 trades (code P or S) here by this insider (11 buys), the last on Feb 10, 2026.
- +0.0% median (+5.8% mean) 90-day return after 5 previous buys.
- The trade is 1.2% of the 144,739 shares held after it.
- No other insider bought within 30 days.
- 615 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director KNIGHT LESTER B bought about $566.3K of AON on Sep 2, 2026; 615 funds added in the latest 13F quarter.Context
- 11 earlier Form 4 trades (code P or S) here by this insider (11 buys), the last on Feb 10, 2026.
- +0.0% median (+5.8% mean) 90-day return after 5 previous buys.
- The trade is 3.4% of the 149,836 shares held after it.
- No other insider bought within 30 days.
- 615 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director KNIGHT LESTER B bought about $1.7M of AON on Sep 2, 2026, the largest insider purchase at the company since 2024; 615 funds added in the latest 13F quarter.Context
- 11 earlier Form 4 trades (code P or S) here by this insider (11 buys), the last on Feb 10, 2026.
- +0.0% median (+5.8% mean) 90-day return after 5 previous buys.
- The trade is 4.6% of the 157,048 shares held after it.
- No other insider bought within 30 days.
- 615 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director KNIGHT LESTER B bought about $2.4M of AON on Sep 2, 2026, the largest insider purchase at the company since 2024; 615 funds added in the latest 13F quarter.Context
- 11 earlier Form 4 trades (code P or S) here by this insider (11 buys), the last on Feb 10, 2026.
- +0.0% median (+5.8% mean) 90-day return after 5 previous buys.
- The trade is 2.6% of the 161,193 shares held after it.
- No other insider bought within 30 days.
- 615 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director KNIGHT LESTER B bought about $1.4M of AON on Sep 2, 2026, the largest insider purchase at the company since 2024; 615 funds added in the latest 13F quarter.Context
- 11 earlier Form 4 trades (code P or S) here by this insider (11 buys), the last on Feb 10, 2026.
- +0.0% median (+5.8% mean) 90-day return after 5 previous buys.
- The trade is 0.9% of the 162,633 shares held after it.
- No other insider bought within 30 days.
- 615 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director KNIGHT LESTER B bought about $474.8K of AON on Sep 2, 2026; 615 funds added in the latest 13F quarter.73 transactions on record
Since filing: total return from the first close after the filing to the latest close, dividend-adjusted. Not a forecast.
Context lines are counts over the filings above and returns from our own price history, never a price level. Not investment advice.
Seven facts, ranked against the sector ·
Rank is not a forecast
Insiders
net +$4.9M over 180 days
+$6.5M over 90 days
more than 99% of Insurance
Congress
no House purchase disclosed in the last 12 months
Funds
615 funds bought in last quarter
more than 89% of Insurance
Revenue
+9.4% year over year
below 51% of Insurance
Margin
21.5% net margin
more than 74% of Insurance
Buybacks
no share repurchases reported
Short interest
2.0% of the float short (float per yahoo 2026-10-26) · 1.8 days to cover · settled 2026-09-30
below 73% of Insurance
What changed in the last 30 days
Oct 27Insider selling stopped: no sales in 90 days after 7 in the prior 90
Why it matters
The absence is the signal: 7 sales in one 90-day window and none in the next is a change of behaviour, not a filing.
Watch AON
A free account keeps a watchlist and can send one email a day when insiders, funds or Congress file on the names in it. No password and no card.
The year, with the filings on it
Total return over 12 months. Each marker is a filing; hover or tap one for the detail.
-11.5%12M
Insider buyInsider sellForm 144 (planned sale)
Indexed to 100, dividend-adjusted, not a price chart.
When a name files heavily, the largest trades are drawn first.
Who owns AON: institutional holders (13F)
13F holdings, latest reported quarter
15,716,429 sh
$5.2B
13,603,465 sh
$4.5B
12,175,974 sh
$4.0B
11,711,650 sh
$3.9B
9,416,039 sh
$3.1B
Congress trades in AON
STOCK Act disclosures, US House only, filed up to 45 days after the trade
Bought 2025-05-27 · disclosed 21 days later
$1,001 - $15,000
Sold 2025-05-08 · disclosed 45 days later
$15,001 - $50,000
Bought 2025-03-13 · disclosed 29 days later
$15,001 - $50,000
Sold 2024-07-02 · disclosed 45 days later
$15,001 - $50,000
Sold 2024-07-02 · disclosed 45 days later
$1,001 - $15,000
Activist and 5% holders (13D/13G)
No 5%+ ownership filings
Nobody has filed for crossing 5%. That is a fact, not missing data.
AON planned insider sales (Form 144)
Notice of intent to sell, filed before any sale
Zeidel Darren
Filed 2026-07-28
$717.8K
Zeidel Darren
Filed 2026-07-17
$725.5K
Zeidel Darren
Filed 2026-07-07
$216.0K
AON mutual fund holders (N-PORT)
Funds ranked by the share of their own portfolio in this stock (N-PORT).
Invesco KBW Property & Casualty Insurance ETF
$19.9M position · as of 2026-05-31
8.2%
DIAMOND HILL LARGE CAP CONCENTRATED ETF
$5.1M position · as of 2026-06-30
5.9%
Independent Franchise Partners US Equity Fund
$61.8M position · as of 2026-06-30
4.6%
Weitz Multi Cap Equity Fund
$22.4M position · as of 2026-06-30
4.5%
Weitz Large Cap Equity Fund
$28.2M position · as of 2026-06-30
4.5%
Weitz Partners III Opportunity Fund
$14.9M position · as of 2026-06-30
4.5%
SEC N-PORT, monthly, about 60 days late · funds ≥ $10M ·
% is the share of the fund's own portfolio
Executive pay vs shareholder return
CEO pay, headline and as actually paid, against the company's
return and its chosen peers' (DEF 14A).
FY
CEO total
Actually paid
Other execs, avg
TSR
Peer TSR
2025
$73.7M
$82.2M
$7.7M
+74%
+103%
2024
$26.2M
$46.9M
$9.5M
+75%
+77%
2023
$23.7M
$26.6M
$16.6M
+41%
+35%
2022
$19.7M
$18.5M
$6.6M
+44%
+21%
2021
$19.9M
$101.1M
$7.6M
+43%
+35%
Tagged by the company under SEC Item 402(v). Returns are
cumulative from the start of the disclosure period. Green where the company beat its own peer group.
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
Insiders are net buyers of their own stock.
The record shows a net $4.9M bought by insiders over 180 days, 615 funds added last quarter. Each figure is a federal filing, dated the day it went public.
AON financials
Revenue growth
+9.4%
XBRL, annual
Net margin
21.5%
Ratios from the company's XBRL filings, latest filings
Revenue, TTM
$17.6B
four quarters, 2025-07-01 to 2026-06-30
Revenue, TTM AON
| FY Dec 2025 | $17.2B |
| FY Dec 2024 | $15.7B |
| FY Dec 2023 | $13.4B |
| FY Dec 2022 | $12.5B |
| FY Dec 2021 | $12.2B |
| Jun 2026 | $4.2B |
| Mar 2026 | $5.0B |
| Dec 2025 | $4.3B |
| Sep 2025 | $4.0B |
| Jun 2025 | $4.2B |
| Mar 2025 | $4.7B |
| Dec 2024 | $4.1B |
| Sep 2024 | $3.7B |
At each fiscal year end
Single quarter
Net margin, TTM
+22.3%
net income over revenue, 2025-07-01 to 2026-06-30
Net margin, TTM AON
| FY Dec 2025 | +21.5% |
| FY Dec 2024 | +16.9% |
| FY Dec 2023 | +19.2% |
| FY Dec 2022 | +20.7% |
| FY Dec 2021 | +10.3% |
| Jun 2026 | +13.0% |
| Mar 2026 | +24.1% |
| Dec 2025 | +39.4% |
| Sep 2025 | +11.5% |
| Jun 2025 | +13.9% |
| Mar 2025 | +20.4% |
| Dec 2024 | +17.3% |
| Sep 2024 | +9.2% |
At each fiscal year end
Single quarter
Free cash flow, TTM
$3.2B
operating cash flow minus capex, 2025-07-01 to 2026-06-30
Free cash flow, TTM AON
| FY Dec 2025 | $3.2B |
| FY Dec 2024 | $2.8B |
| FY Dec 2023 | $3.2B |
| FY Dec 2022 | $3.0B |
| FY Dec 2021 | $2.0B |
| Jun 2026 | $483.0M |
| Mar 2026 | $363.0M |
| Dec 2025 | $1.3B |
| Sep 2025 | $1.1B |
| Jun 2025 | $732.0M |
| Mar 2025 | $84.0M |
| Dec 2024 | $1.1B |
| Sep 2024 | $951.0M |
At each fiscal year end
Single quarter
Debt to equity
1.56x
long-term 2026-06-30 plus current 2026-06-30; equity 2026-06-30
Debt to equity AON
| FY Dec 2025 | 1.63x |
| FY Dec 2024 | 2.78x |
| FY Dec 2023 | n/a |
| FY Dec 2022 | n/a |
| FY Dec 2021 | 8.85x |
| Jun 2026 | 1.56x |
| Mar 2026 | 1.49x |
| Dec 2025 | 1.63x |
| Sep 2025 | 2.11x |
| Jun 2025 | 2.20x |
| Mar 2025 | 2.52x |
| Dec 2024 | 2.78x |
| Sep 2024 | 2.74x |
At each fiscal year end
Trailing four quarters at each quarter end
Cash flow to debt
0.24x
TTM operating cash flow over long-term 2026-06-30 plus current 2026-06-30
Cash flow to debt AON
| FY Dec 2025 | 0.23x |
| FY Dec 2024 | 0.18x |
| FY Dec 2023 | 0.31x |
| FY Dec 2022 | 0.30x |
| FY Dec 2021 | 0.23x |
| Jun 2026 | 0.24x |
| Mar 2026 | 0.26x |
| Dec 2025 | 0.23x |
| Sep 2025 | 0.20x |
| Jun 2025 | 0.18x |
| Mar 2025 | 0.16x |
| Dec 2024 | 0.18x |
| Sep 2024 | 0.18x |
At each fiscal year end
Trailing four quarters at each quarter end
Return on equity
+44.9%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on equity AON
| FY Dec 2025 | +47.8% |
| FY Dec 2024 | +100.2% |
| FY Dec 2023 | n/a |
| FY Dec 2022 | +973.3% |
| FY Dec 2021 | +55.1% |
| Jun 2026 | +44.9% |
| Mar 2026 | +46.8% |
| Dec 2025 | +47.8% |
| Sep 2025 | +38.3% |
| Jun 2025 | +38.0% |
| Mar 2025 | +74.2% |
| Dec 2024 | +100.2% |
| Sep 2024 | +86.1% |
At each fiscal year end
Trailing four quarters at each quarter end
Return on assets
+7.3%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on assets AON
| FY Dec 2025 | +7.4% |
| FY Dec 2024 | +6.4% |
| FY Dec 2023 | +7.7% |
| FY Dec 2022 | +8.0% |
| FY Dec 2021 | +3.9% |
| Jun 2026 | +7.3% |
| Mar 2026 | +7.7% |
| Dec 2025 | +7.4% |
| Sep 2025 | +5.4% |
| Jun 2025 | +4.9% |
| Mar 2025 | +5.6% |
| Dec 2024 | +6.4% |
| Sep 2024 | +5.9% |
At each fiscal year end
Trailing four quarters at each quarter end
Return on invested capital
+16.1%
operating income after a 21.7% effective tax rate, over long-term 2026-06-30 plus current 2026-06-30 plus average of 2025-06-30 and 2026-06-30 minus cash
Return on invested capital AON
| FY Dec 2025 | +15.7% |
| FY Dec 2024 | +16.1% |
| FY Dec 2023 | +32.1% |
| FY Dec 2022 | +29.5% |
| FY Dec 2021 | +12.9% |
| Jun 2026 | +16.1% |
| Mar 2026 | +16.5% |
| Dec 2025 | +15.7% |
| Sep 2025 | +15.0% |
| Jun 2025 | +14.1% |
| Mar 2025 | +15.1% |
| Dec 2024 | +16.1% |
| Sep 2024 | +14.6% |
At each fiscal year end
Trailing four quarters at each quarter end
Return on capital employed
+17.5%
operating income (EBIT proxy) over average of 2025-06-30 and 2026-06-30 minus current liabilities
Return on capital employed AON
| FY Dec 2025 | +16.2% |
| FY Dec 2024 | +20.0% |
| FY Dec 2023 | +30.6% |
| FY Dec 2022 | +29.1% |
| FY Dec 2021 | +15.2% |
| Jun 2026 | +17.5% |
| Mar 2026 | +17.1% |
| Dec 2025 | +16.2% |
| Sep 2025 | +15.6% |
| Jun 2025 | +14.7% |
| Mar 2025 | +16.7% |
| Dec 2024 | +20.0% |
| Sep 2024 | +17.5% |
At each fiscal year end
Trailing four quarters at each quarter end
P/E, trailing
16.66x
close 2026-10-26 over four quarters of diluted EPS, 2025-07-01 to 2026-06-30
P/E, trailing AON
| FY Dec 2025 | 20.75x |
| FY Dec 2024 | 28.35x |
| FY Dec 2023 | 23.30x |
| FY Dec 2022 | 24.76x |
| FY Dec 2021 | 54.65x |
| Jun 2026 | 18.30x |
| Mar 2026 | 17.73x |
| Dec 2025 | 20.75x |
| Sep 2025 | 28.55x |
| Jun 2025 | 29.85x |
| Mar 2025 | 33.97x |
| Dec 2024 | 28.35x |
| Sep 2024 | 29.17x |
At each fiscal year end
Trailing four quarters at each quarter end
Enterprise value
$78.0B
market value at close 2026-10-26 on 2026-07-28 shares, plus long-term 2026-06-30 plus current 2026-06-30, minus cash 2026-06-30
Enterprise value AON
| FY Dec 2025 | $89.9B |
| FY Dec 2024 | $93.6B |
| FY Dec 2023 | $68.7B |
| FY Dec 2022 | $72.2B |
| FY Dec 2021 | $75.1B |
| Jun 2026 | $84.7B |
| Mar 2026 | $82.6B |
| Dec 2025 | $89.9B |
| Sep 2025 | $92.6B |
| Jun 2025 | $93.3B |
| Mar 2025 | $102.9B |
| Dec 2024 | $93.6B |
| Sep 2024 | $91.2B |
At each fiscal year end
Trailing four quarters at each quarter end
FCF yield
+5.1%
TTM free cash flow over market value at close 2026-10-26
FCF yield AON
| FY Dec 2025 | +4.2% |
| FY Dec 2024 | +3.6% |
| FY Dec 2023 | +5.5% |
| FY Dec 2022 | +4.9% |
| FY Dec 2021 | +3.1% |
| Jun 2026 | +4.6% |
| Mar 2026 | +5.1% |
| Dec 2025 | +4.2% |
| Sep 2025 | +4.0% |
| Jun 2025 | +3.8% |
| Mar 2025 | +3.1% |
| Dec 2024 | +3.6% |
| Sep 2024 | +3.8% |
At each fiscal year end
Trailing four quarters at each quarter end
PEG, trailing
0.32x
P/E over trailing EPS growth of 52%: four quarters to 2026-06-30 against the four to 2025-06-30
PEG, trailing AON
| FY Dec 2025 | 0.61x |
| FY Dec 2024 | 19.67x |
| FY Dec 2023 | 7.63x |
| FY Dec 2022 | 0.21x |
| FY Dec 2021 | n/a |
| Jun 2026 | 0.35x |
| Mar 2026 | 0.32x |
| Dec 2025 | 0.61x |
| Sep 2025 | 5.37x |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
| Dec 2024 | 19.67x |
| Sep 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Price as of 2026-10-26. Hover or tap a tile for its yearly and quarterly history.
Method
TTM is four consecutive fiscal quarters; Q4 is the year minus nine months when not filed. Returns use the average of opening and closing balances. EBIT is approximated by operating income. PEG uses trailing EPS growth.
Fundamentals
Annual figures from XBRL filings. Pick a past date to see them as known then.
| 2025-12 | 2024-12 | 2023-12 | 2022-12 | |
|---|---|---|---|---|
| Revenue | $17.2B | $15.7B | $13.4B | $12.5B |
| Operating income | $4.3B | $3.8B | $3.8B | $3.7B |
| Net income | $3.7B | $2.7B | $2.6B | $2.6B |
| EPS (diluted) | 17.02 | 12.49 | 12.51 | 12.14 |
| Operating cash flow | $3.5B | $3.0B | $3.4B | $3.2B |
| Cash | $1.2B | $1.1B | $778.0M | $690.0M |
| Long-term debt | $14.7B | $16.3B | $10.0B | $9.8B |
| Dividends paid | $629.0M | $562.0M | $489.0M | $463.0M |
SEC XBRL, fiscal years, as known on 2026-10-27
AON Stock Sonar score 6/7 axes
Find similar shapesCompareAON ranks highest on institutional and government (89th percentile) and profitability (82nd), and lowest on financial health (17th), among Insurance peers.
6 of 7 axes scored. Each is a percentile against sector peers (all companies when the sector is thin); higher is better. An unscored axis is unmeasured, not low. How it is scored
AON filings, in plain words
Are Aon insiders buying or selling AON?
In the 180 days to 2026-10-27, Aon insiders were net buyers, a net $4.9M: $6.5M of purchases and $1.7M of sales reported on Form 4, by 1 buyer and 1 seller.
Have members of Congress traded AON?
Yes, but not in the year to 2026-10-27; the latest on record is a purchase by Thomas H. Kean dated 2025-05-27.
Read the full summary
In the 180 days to 2026-10-27, Aon insiders were net buyers of AON, a net $4.9M across purchases and sales reported on Form 4 by 1 buyer and 1 seller. None of the 7 insider sales was flagged as made under a Rule 10b5-1 plan. Members of Congress have disclosed trades in AON, none in the last year; the latest on record is a purchase by Thomas H. Kean dated 2025-05-27. Each figure is counted from SEC and House filings as of 2026-10-27, dated the day the filing was made public.
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