Insider trading

Period: 120 months Stock: AON Minimum amount: $1M × + Add filter Clear all
Views & alerts

Save your view. Keep the filter you have built, and get an email when a new filing matches it. A free account does both.

When

Period

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

53 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.

53 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.

53 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.

53 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.
53 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
53 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.

53 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%
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
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
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
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%
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%
18 Feb 2022
Davies Christa Chief Financial Officer
Sold, plan not stated 6×
$9.31M 32,942 at 282.51
14.2%
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%
5 Nov 2020
KNIGHT LESTER B Director · indirect
Bought 2×
$1.87M 10,000 at 186.55
opened
First buy on file
13 May 2020
KNIGHT LESTER B Director · indirect
Bought 2×
$13.65M 70,000 at 195.00
233%
First buy on file
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%
14 Feb 2020
Davies Christa Chief Financial Officer
Sold, plan not stated 3×
$7.70M 32,762 at 235.06
13.0%
29 Aug 2019
BRUNO JOHN G Chief Operating Officer
Sold, plan not stated
$1.25M 6,500 at 192.01
12.3%
31 May 2019
LIEB PETER M General Counsel
Sold, plan not stated 3×
$2.10M 11,645 at 180.69
100.0%
Sold half or more
9 May 2019
Andersen Eric Co-President
Sold, plan not stated
$1.34M 7,500 at 178.50
8.5%
20 Feb 2019
O'Connor Michael J Co-President
Sold, plan not stated 2×
$3.94M 22,815 at 172.74
15.6%
19 Feb 2019
LIEB PETER M General Counsel
Sold, plan not stated 2×
$2.60M 15,068 at 172.77
47.2%
15 Feb 2019
Davies Christa Chief Financial Officer
Sold, plan not stated 2×
$5.85M 34,152 at 171.18
14.0%
14 Feb 2019
Davies Christa Chief Financial Officer
Sold, plan not stated 2×
$4.09M 24,000 at 170.52
9.0%
9 Mar 2018
LIEB PETER M General Counsel
Sold, plan not stated
$2.14M 14,772 at 145.00
48.0%
9 Mar 2018
O'Connor Michael J CEO, Aon Risk Solutions
Sold, plan not stated
$1.43M 9,855 at 145.00
7.4%
20 Feb 2018
Meissner Laurel G. Global Controller
Sold, plan not stated
$1.11M 7,940 at 140.23
39.2%
16 Feb 2018
Davies Christa Chief Financial Officer
Sold, plan not stated 2×
$13.61M 96,570 at 140.92
29.4%
6 Feb 2018
KNIGHT LESTER B Director · indirect
Bought 2×
$8.31M 60,000 at 138.42
45.8%
First buy on file
2 Feb 2018
Zern John CEO, Aon Global Health
Sold, plan not stated
$2.17M 14,747 at 147.00
53.2%
Sold half or more
2 Feb 2018
O'Connor Michael J Chief Executive Officer, ARS
Sold, plan not stated
$1.86M 12,824 at 145.00
10.1%
30 Nov 2017
Zern John CEO, Global Health & Benefits
Sold, plan not stated
$2.47M 17,680 at 139.79
39.0%
14 Nov 2017
Andersen Eric CEO, Aon Benfield
Sold, plan not stated
$1.44M 10,000 at 143.52
16.2%
9 Nov 2017
BRUNO JOHN G Executive Vice President, CIO
Sold, plan not stated
$1.43M 10,000 at 143.24
48.8%
19 Sep 2017
O'Connor Michael J Chief Executive Officer, ARS
Sold, plan not stated
$1.45M 10,000 at 145.00
8.1%
6 Sep 2017
O'Connor Michael J Chief Executive Officer, ARS
Sold, plan not stated
$1.40M 10,000 at 140.28
8.1%
30 Mar 2017
LIEB PETER M EVP & General Counsel
Sold, plan not stated
$1.96M 16,683 at 117.29
42.9%
28 Feb 2017
LIEB PETER M EVP & General Counsel
Sold, plan not stated
$2.09M 18,017 at 116.11
31.7%
22 Feb 2017
Case Gregory C President & CEO
Sold, plan not stated 2×
$29.99M 260,000 at 115.36
49.0%
21 Feb 2017
Case Gregory C President & CEO
Sold, plan not stated 2×
$30.11M 260,000 at 115.80
32.9%
Showing 1–50 of 53. Page 1 of 2 Older →