Insider trading

Period: 120 months Stock: AON Minimum amount: $100K × + Add filter Clear all
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When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

100 decisions over 120 months
Who

Role

The position the person holds at the company, read from the title on the filing. A chief executive who is also a director counts as the chief executive.

100 decisions over 120 months
The trade

Type of trade

Purchases, sales, or cluster buys: companies where 3 or more insiders bought within 30 days. The number beside each is what that choice would give.

100 decisions over 120 months
The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

100 decisions over 120 months Remove this filter
The trade

Plan

  • Discretionary: they chose to sell that week.
  • Scheduled: a 10b5-1 plan fixed the sale months in advance, so the timing says nothing about what they knew.
  • Not stated: filed before the SEC added the box in April 2023, which is most of the older half of this database.
100 decisions over 120 months
The trade

Share of their own holding

How much of what they already held the trade moved. Selling a tenth of a stake is not the same act as selling all of it.

At least
100 decisions over 120 months
Ownership

What the chief executive holds

The value of the chief executive’s stock measured against base salary. The salary comes from the company’s own proxy. Companies with no figure are in neither direction.

100 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
2 Sep 2026
KNIGHT LESTER B Director · indirect
Bought 6×
$6.55M 20,000 at 327.48
14.0%
28 Jul 2026
Zeidel Darren General Counsel
Sold on a plan 3×
$717.75K 1,900 at 377.76
14.2%
Planned (10b5-1)
17 Jul 2026
Zeidel Darren General Counsel
Sold on a plan 3×
$725.50K 1,950 at 372.05
12.7%
Planned (10b5-1)
7 Jul 2026
Zeidel Darren General Counsel
Sold on a plan
$216.00K 600 at 360.00
3.8%
Planned (10b5-1)
26 Feb 2026
Zeidel Darren General Counsel
Sold at will
$1.42M 4,300 at 329.72
21.2%
Not planned
17 Feb 2026
Zeidel Darren General Counsel
Sold on a plan
$1.64M 5,040 at 325.79
19.9%
Planned (10b5-1)
10 Feb 2026
KNIGHT LESTER B Director · indirect
Bought
$1.28M 4,000 at 319.24
2.9%
5 Nov 2025
Zeidel Darren General Counsel
Sold at will 2×
$3.03M 8,800 at 344.52
30.3%
Not planned
27 Nov 2024
Simon Mindy F. Chief Operating Officer
Sold at will
$256.32K 650 at 394.34
26.4%
Not planned
26 Nov 2024
Stevens Lisa Chief Administrative Officer
Sold at will
$494.29K 1,275 at 387.68
13.6%
Not planned
28 Aug 2024
Spruell Byron Director
Bought
$246.56K 725 at 340.08
15.8%
12 Aug 2024
Zeidel Darren General Counsel
Sold at will
$312.69K 950 at 329.15
3.9%
Not planned
12 Aug 2024
Stevens Lisa Chief Administrative Officer
Sold at will
$131.58K 400 at 328.95
4.1%
Not planned
26 Jul 2024
Zeidel Darren General Counsel
Sold on a plan
$2.05M 6,597 at 310.00
21.3%
Planned (10b5-1)
3 May 2024
KNIGHT LESTER B Director · indirect
Bought 6×
$2.77M 10,000 at 276.61
7.8%
1 Mar 2024
Andersen Eric President
Sold at will
$1.73M 5,500 at 313.74
3.2%
Not planned
23 Feb 2024
Stevens Lisa Chief People Officer
Sold at will
$4.10M 13,000 at 315.26
56.3%
Sold half or more
16 Feb 2024
Davies Christa Chief Financial Officer
Sold at will
$12.58M 40,164 at 313.29
20.1%
Not planned
15 Feb 2024
Neller Michael Principal Accounting Officer
Sold at will
$234.00K 750 at 312.00
16.2%
Not planned
12 Feb 2024
Davies Christa Chief Financial Officer
Sold at will 3×
$6.42M 20,618 at 311.40
11.4%
Not planned
7 Feb 2024
KNIGHT LESTER B Director · indirect
Bought 2×
$15.10M 50,000 at 301.97
59.5%
Largest buy in 3 yrs
23 Aug 2023
Spruell Byron Director
Bought
$259.66K 800 at 324.58
25.0%
Largest buy in 3 yrs
9 May 2023
Andersen Eric President
Sold at will
$2.52M 7,500 at 335.55
4.9%
Not planned
21 Feb 2023
Davies Christa Chief Financial Officer
Sold, plan not stated 4×
$6.26M 20,528 at 305.11
10.3%
17 Feb 2023
Davies Christa Chief Financial Officer
Sold, plan not stated 3×
$15.89M 51,244 at 310.14
20.4%
16 Feb 2023
Neller Michael Principal Accounting Officer
Sold, plan not stated
$311.59K 1,000 at 311.59
45.1%
13 Feb 2023
Davies Christa Chief Financial Officer
Sold, plan not stated
$196.43K 617 at 318.36
0.3%
23 Aug 2022
Spruell Byron Director
Bought
$116.69K 400 at 291.72
17.1%
Largest buy in 3 yrs
4 Aug 2022
Neller Michael Principal Accounting Officer · indirect
Sold, plan not stated
$256.00K 900 at 284.45
25.5%
5 May 2022
KNIGHT LESTER B Director · indirect
Bought 2×
$4.01M 14,000 at 286.58
14.7%
Largest buy in 3 yrs
23 Feb 2022
Andersen Eric President
Sold, plan not stated 2×
$2.12M 7,500 at 282.57
5.7%
22 Feb 2022
Neller Michael Principal Accounting Officer
Sold, plan not stated
$356.25K 1,250 at 285.00
39.3%
18 Feb 2022
Davies Christa Chief Financial Officer
Sold, plan not stated 6×
$9.31M 32,942 at 282.51
14.2%
15 Feb 2022
Davies Christa Chief Financial Officer
Sold, plan not stated
$189.11K 666 at 283.95
0.3%
14 Feb 2022
Davies Christa Chief Financial Officer
Sold, plan not stated
$174.77K 616 at 283.72
0.3%
9 Nov 2021
Neller Michael Principal Accounting Officer
Sold, plan not stated
$745.34K 2,500 at 298.14
96.5%
Sold half or more
17 Aug 2021
LOSH J MICHAEL Director · indirect
Sold, plan not stated
$2.52M 9,000 at 279.62
43.7%
4 Aug 2021
KNIGHT LESTER B Director · indirect
Bought 4×
$2.64M 10,000 at 263.95
10.5%
Largest buy in 3 yrs
16 Feb 2021
Davies Christa Chief Financial Officer
Sold, plan not stated
$2.57M 11,444 at 224.89
5.4%
12 Feb 2021
Davies Christa Chief Financial Officer
Sold, plan not stated 5×
$8.44M 36,975 at 228.36
15.0%
10 Nov 2020
Andersen Eric President
Sold, plan not stated
$987.30K 5,000 at 197.46
4.9%
6 Nov 2020
BRUNO JOHN G Chief Operating Officer
Bought
$186.46K 1,000 at 186.46
1.5%
First buy on file
5 Nov 2020
KNIGHT LESTER B Director · indirect
Bought 2×
$1.87M 10,000 at 186.55
opened
First buy on file
28 May 2020
Andersen Eric President
Sold, plan not stated
$298.70K 1,500 at 199.13
1.4%
27 May 2020
WOO CAROLYN Y Director
Sold, plan not stated
$118.68K 600 at 197.80
2.3%
14 May 2020
Neller Michael Principal Accounting Officer
Sold, plan not stated
$142.88K 750 at 190.50
17.8%
13 May 2020
KNIGHT LESTER B Director · indirect
Bought 2×
$13.65M 70,000 at 195.00
233%
First buy on file
16 Mar 2020
Neller Michael Principal Accounting Officer
Sold, plan not stated
$200.85K 1,250 at 160.68
22.9%
18 Feb 2020
O'Connor Michael J Co-President
Sold, plan not stated 3×
$5.92M 25,250 at 234.59
16.9%
18 Feb 2020
Goland Anthony R Chief Innovation Officer
Sold, plan not stated
$3.53M 15,040 at 235.00
47.3%
Showing 1–50 of 100. Page 1 of 2 Older →