Aon PLC (AON)

Aon PLC experienced significant insider activity recently, highlighted by Lester B. Knight acquiring shares worth approximately $6.55 million on September 2, 2026. Conversely, General Counsel Darren Zeidel executed multiple planned sales throughout July. These movements occurred amid a 7.2% stock price decline over the past quarter, following the company's latest earnings report.
Ticker: AON Exchange: NYS


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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for Aon PLC. Upgrade to see score, net flow, insiders and the full signal context.

Top insiders
Trades
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
2.8
KNIGHT LESTER B Non-Executive Director
Transaction date
Purchase
Price
351.85
Quantity 19,980 +22.5%
Value US$4,297,553
2.8
KNIGHT LESTER B Non-Executive Director
Transaction date
Purchase
Price
288.88
Quantity 35,859 +42.5%
Value US$557,505
2.8
KNIGHT LESTER B Non-Executive Director
Transaction date
Purchase
Price
233.38
Quantity 29,743 -47.0%
Value US$1,962,068
2.8
KNIGHT LESTER B Non-Executive Director
Transaction date
Purchase
Price
327.52
Quantity 7,212 +4.8%
Value US$2,362,074
2.8
KNIGHT LESTER B Non-Executive Director
Transaction date
Purchase
Price
326.53
Quantity 5,097 +3.5%
Value US$1,664,323
2.8
KNIGHT LESTER B Non-Executive Director
Transaction date
Purchase
Price
325.63
Quantity 1,739 +1.2%
Value US$566,271
2.6
Zeidel Darren General Counsel Officer
Transaction date
Planned sale
Price
380.00
Quantity 475 -4.0%
Value US$180,500
2.6
Zeidel Darren General Counsel Officer
Transaction date
Planned sale
Price
378.00
Quantity 725 -5.7%
Value US$274,050
2.6
Zeidel Darren General Counsel Officer
Transaction date
Planned sale
Price
376.00
Quantity 700 -5.2%
Value US$263,200
2.6
Zeidel Darren Officer Officer
Transaction date
Proposed sale
Price
377.76
Quantity 1,900
Value US$717,750
2.6
Zeidel Darren General Counsel Officer
Transaction date
Planned sale
Price
374.00
Quantity 675 -4.8%
Value US$252,450
2.6
Zeidel Darren General Counsel Officer
Transaction date
Planned sale
Price
372.00
Quantity 650 -4.4%
Value US$241,800
2.6
Zeidel Darren General Counsel Officer
Transaction date
Planned sale
Price
370.00
Quantity 625 -4.1%
Value US$231,250
2.6
Zeidel Darren Officer Officer
Transaction date
Proposed sale
Price
372.05
Quantity 1,950
Value US$725,500
2.6
Zeidel Darren General Counsel Officer
Transaction date
Planned sale
Price
360.00
Quantity 600 -3.8%
Value US$216,000
2.6
Zeidel Darren Officer Officer
Transaction date
Proposed sale
Price
360.00
Quantity 600
Value US$216,000
Goltermann Lori Officer Officer
Transaction date
Proposed sale
Price
324.52
Quantity 5,766
Value US$1,871,209
2.6
Zeidel Darren General Counsel Officer
Transaction date
Sale
Price
329.72
Quantity 4,300 -21.2%
Value US$1,417,784
2.6
Zeidel Darren Officer Officer
Transaction date
Proposed sale
Price
329.72
Quantity 4,300
Value US$1,417,784
2.6
Zeidel Darren General Counsel Officer
Transaction date
Planned sale
Price
325.79
Quantity 5,040 -19.9%
Value US$1,641,982
2.6
Zeidel Darren Officer Officer
Transaction date
Proposed sale
Price
325.79
Quantity 5,040
Value US$1,641,982
2.8
KNIGHT LESTER B Non-Executive Director
Transaction date
Purchase
Price
319.24
Quantity 4,000 +2.9%
Value US$1,276,956
3.2
Neller Michael Former Officer Officer
Transaction date
Proposed sale
Price
350.34
Quantity 700
Value US$245,238
2.6
Zeidel Darren General Counsel Officer
Transaction date
Sale
Price
345.17
Quantity 1,230 -5.7%
Value US$424,559
2.6
Zeidel Darren General Counsel Officer
Transaction date
Sale
Price
344.42
Quantity 7,570 -26.1%
Value US$2,607,259
2.6
Zeidel Darren Officer Officer
Transaction date
Proposed sale
Price
344.52
Quantity 8,800
Value US$3,031,815
Slyfield Jillian Officer Officer
Transaction date
Proposed sale
Price
384.86
Quantity 260
Value US$100,063
1.8
Simon Mindy F. Chief Operating Officer Officer
Transaction date
Sale
Price
394.34
Quantity 650 -26.4%
Value US$256,321
1.8
Simon Mindy F. Officer Officer
Transaction date
Proposed sale
Price
394.34
Quantity 650
Value US$256,321
2.8
Stevens Lisa Chief Administrative Officer Officer
Transaction date
Sale
Price
387.68
Quantity 1,275 -13.6%
Value US$494,295
2.8
Stevens Lisa Officer Officer
Transaction date
Proposed sale
Price
387.68
Quantity 1,275
Value US$494,295
3.2
Spruell Byron Non-Executive Director
Transaction date
Purchase
Price
340.08
Quantity 725 +15.8%
Value US$246,558
2.6
Zeidel Darren General Counsel Officer
Transaction date
Sale
Price
329.15
Quantity 950 -3.9%
Value US$312,688
2.8
Stevens Lisa Chief Administrative Officer Officer
Transaction date
Planned sale
Price
328.95
Quantity 400 -4.1%
Value US$131,580
2.6
Zeidel Darren Officer Officer
Transaction date
Proposed sale
Price
329.15
Quantity 950
Value US$312,688
2.8
Stevens Lisa Officer Officer
Transaction date
Proposed sale
Price
328.95
Quantity 400
Value US$131,580
Weitz Andy Officer Officer
Transaction date
Proposed sale
Price
325.70
Quantity 8,454
Value US$2,753,469
2.6
Zeidel Darren General Counsel Officer
Transaction date
Planned sale
Price
310.00
Quantity 6,597 -21.3%
Value US$2,045,070
2.6
Zeidel Darren Officer Officer
Transaction date
Proposed sale
Price
310.00
Quantity 6,597
Value US$2,045,070
2.8
KNIGHT LESTER B Non-Executive Director
Transaction date
Purchase
Price
277.50
Quantity 1,109 +2.1%
Value US$307,748
2.8
KNIGHT LESTER B Non-Executive Director
Transaction date
Purchase
Price
276.72
Quantity 2,426 +4.7%
Value US$671,184
2.8
KNIGHT LESTER B Non-Executive Director
Transaction date
Purchase
Price
275.76
Quantity 1,466 +2.9%
Value US$404,126
2.8
KNIGHT LESTER B Non-Executive Director
Transaction date
Purchase
Price
277.50
Quantity 1,109 +0.8%
Value US$307,748
2.8
KNIGHT LESTER B Non-Executive Director
Transaction date
Purchase
Price
276.72
Quantity 2,426 +1.8%
Value US$671,184
2.8
KNIGHT LESTER B Non-Executive Director
Transaction date
Purchase
Price
275.76
Quantity 1,466 +1.1%
Value US$404,126
2.8
Stevens Lisa Chief People Officer Officer
Transaction date
Sale
Price
316.31
Quantity 315 -3.1%
Value US$99,690
2.8
Stevens Lisa Officer Officer
Transaction date
Proposed sale
Price
315.47
Quantity 316
Value US$99,690
3.1
Andersen Eric President Officer
Transaction date
Sale
Price
313.74
Quantity 5,500 -3.2%
Value US$1,725,568
3.1
Andersen Eric Officer Officer
Transaction date
Proposed sale
Price
313.74
Quantity 5,500
Value US$1,725,568
2.8
Stevens Lisa Chief People Officer Officer
Transaction date
Sale
Price
315.26
Quantity 13,000 -56.3%
Value US$4,098,380
2.8
Lisa J Stevens Officer Officer
Transaction date
Proposed sale
Price
314.00
Quantity 13,000
Value US$4,082,000
2.5
Davies Christa Chief Financial Officer Officer
Transaction date
Sale
Price
313.29
Quantity 40,164 -20.1%
Value US$12,583,167
2.5
Davies Christa Officer Officer
Transaction date
Proposed sale
Price
311.28
Quantity 40,165
Value US$12,502,396
3.2
Neller Michael Principal Accounting Officer Officer
Transaction date
Sale
Price
312.00
Quantity 750 -16.2%
Value US$234,000
3.2
Neller Michael Officer Officer
Transaction date
Proposed sale
Price
312.00
Quantity 750
Value US$234,000
2.5
Davies Christa Chief Financial Officer Officer
Transaction date
Sale
Price
312.39
Quantity 1,033 -0.6%
Value US$322,699
2.5
Davies Christa Chief Financial Officer Officer
Transaction date
Sale
Price
311.66
Quantity 12,836 -7.4%
Value US$4,000,468
2.5
Davies Christa Chief Financial Officer Officer
Transaction date
Sale
Price
310.75
Quantity 6,749 -3.7%
Value US$2,097,252
2.5
Davies Christa Officer Officer
Transaction date
Proposed sale
Price
311.40
Quantity 20,618
Value US$6,420,469
2.8
KNIGHT LESTER B Non-Executive Director
Transaction date
Purchase
Price
301.97
Quantity 25,000 +100.0%
Value US$7,549,240
2.8
KNIGHT LESTER B Non-Executive Director
Transaction date
Purchase
Price
301.97
Quantity 25,000 +22.9%
Value US$7,549,240
3.2
Spruell Byron Non-Executive Director
Transaction date
Purchase
Price
324.58
Quantity 800 +25.0%
Value US$259,660
Platt James Officer Officer
Transaction date
Proposed sale
Price
334.58
Quantity 3,850
Value US$1,288,118
3.1
Andersen Eric President Officer
Transaction date
Sale
Price
335.55
Quantity 7,500 -4.9%
Value US$2,516,662
3.1
Andersen Eric Officer Officer
Transaction date
Proposed sale
Price
335.55
Quantity 7,500
Value US$2,516,662
Platt James Officer Officer
Transaction date
Proposed sale
Price
304.83
Quantity 2,096
Value US$638,924
2.5
Davies Christa Chief Financial Officer Officer
Transaction date
Planned sale
Price
306.87
Quantity 1,523 -0.8%
Value US$467,363
2.5
Davies Christa Chief Financial Officer Officer
Transaction date
Planned sale
Price
306.11
Quantity 3,797 -2.1%
Value US$1,162,300
2.5
Davies Christa Chief Financial Officer Officer
Transaction date
Planned sale
Price
305.08
Quantity 8,753 -4.5%
Value US$2,670,365
2.5
Davies Christa Chief Financial Officer Officer
Transaction date
Planned sale
Price
304.15
Quantity 6,455 -3.2%
Value US$1,963,288
2.5
Davies Christa Chief Financial Officer Officer
Transaction date
Planned sale
Price
310.78
Quantity 300 -0.2%
Value US$93,234
2.5
Davies Christa Chief Financial Officer Officer
Transaction date
Planned sale
Price
310.19
Quantity 47,099 -19.1%
Value US$14,609,639
2.5
Davies Christa Chief Financial Officer Officer
Transaction date
Planned sale
Price
309.54
Quantity 3,845 -1.5%
Value US$1,190,181
3.2
Neller Michael Principal Accounting Officer Officer
Transaction date
Sale
Price
311.59
Quantity 1,000 -45.1%
Value US$311,590
2.5
Davies Christa Chief Financial Officer Officer
Transaction date
Planned sale
Price
318.36
Quantity 617 -0.3%
Value US$196,428
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value
Number of shares Price Value Details
2026-09-03 2026-09-02 B Purchase Non-Executive Director
19,980 +22.5%
351.85
US$4,297,553
19,980 +22.5% 351.85 US$4,297,553
2026-09-03 2026-09-02 B Purchase Non-Executive Director
35,859 +42.5%
288.88
US$557,505
35,859 +42.5% 288.88 US$557,505
2026-09-03 2026-09-02 B Purchase Non-Executive Director
29,743 -47.0%
233.38
US$1,962,068
29,743 -47.0% 233.38 US$1,962,068
2026-09-03 2026-09-02 B Purchase Non-Executive Director
7,212 +4.8%
327.52
US$2,362,074
7,212 +4.8% 327.52 US$2,362,074
2026-09-03 2026-09-02 B Purchase Non-Executive Director
5,097 +3.5%
326.53
US$1,664,323
5,097 +3.5% 326.53 US$1,664,323
2026-09-03 2026-09-02 B Purchase Non-Executive Director
1,739 +1.2%
325.63
US$566,271
1,739 +1.2% 325.63 US$566,271
2026-07-30 2026-07-28 PlS Planned sale

General Counsel

Officer
475 -4.0%
380.00
US$180,500
475 -4.0% 380.00 US$180,500
2026-07-30 2026-07-28 PlS Planned sale

General Counsel

Officer
725 -5.7%
378.00
US$274,050
725 -5.7% 378.00 US$274,050
2026-07-30 2026-07-28 PlS Planned sale

General Counsel

Officer
700 -5.2%
376.00
US$263,200
700 -5.2% 376.00 US$263,200
2026-07-28 2026-07-28 PrS Proposed sale

Officer

Officer
1,900
377.76
US$717,750
1,900 377.76 US$717,750
2026-07-21 2026-07-17 PlS Planned sale

General Counsel

Officer
675 -4.8%
374.00
US$252,450
675 -4.8% 374.00 US$252,450
2026-07-21 2026-07-17 PlS Planned sale

General Counsel

Officer
650 -4.4%
372.00
US$241,800
650 -4.4% 372.00 US$241,800
2026-07-21 2026-07-17 PlS Planned sale

General Counsel

Officer
625 -4.1%
370.00
US$231,250
625 -4.1% 370.00 US$231,250
2026-07-17 2026-07-17 PrS Proposed sale

Officer

Officer
1,950
372.05
US$725,500
1,950 372.05 US$725,500
2026-07-09 2026-07-07 PlS Planned sale

General Counsel

Officer
600 -3.8%
360.00
US$216,000
600 -3.8% 360.00 US$216,000
2026-07-07 2026-07-07 PrS Proposed sale

Officer

Officer
600
360.00
US$216,000
600 360.00 US$216,000
2026-06-04 2026-06-04 PrS Proposed sale

Officer

Officer
5,766
324.52
US$1,871,209
5,766 324.52 US$1,871,209
2026-03-02 2026-02-26 S Sale

General Counsel

Officer
4,300 -21.2%
329.72
US$1,417,784
4,300 -21.2% 329.72 US$1,417,784
2026-02-26 2026-02-26 PrS Proposed sale

Officer

Officer
4,300
329.72
US$1,417,784
4,300 329.72 US$1,417,784
2026-02-19 2026-02-17 PlS Planned sale

General Counsel

Officer
5,040 -19.9%
325.79
US$1,641,982
5,040 -19.9% 325.79 US$1,641,982
2026-02-17 2026-02-17 PrS Proposed sale

Officer

Officer
5,040
325.79
US$1,641,982
5,040 325.79 US$1,641,982
2026-02-12 2026-02-10 B Purchase Non-Executive Director
4,000 +2.9%
319.24
US$1,276,956
4,000 +2.9% 319.24 US$1,276,956
2025-11-25 2025-11-25 PrS Proposed sale

Former Officer

Officer
700
350.34
US$245,238
700 350.34 US$245,238
2025-11-07 2025-11-05 S Sale

General Counsel

Officer
1,230 -5.7%
345.17
US$424,559
1,230 -5.7% 345.17 US$424,559
2025-11-07 2025-11-05 S Sale

General Counsel

Officer
7,570 -26.1%
344.42
US$2,607,259
7,570 -26.1% 344.42 US$2,607,259
2025-11-05 2025-11-05 PrS Proposed sale

Officer

Officer
8,800
344.52
US$3,031,815
8,800 344.52 US$3,031,815
2025-02-10 2025-02-10 PrS Proposed sale

Officer

Officer
260
384.86
US$100,063
260 384.86 US$100,063
2024-12-02 2024-11-27 S Sale

Chief Operating Officer

Officer
650 -26.4%
394.34
US$256,321
650 -26.4% 394.34 US$256,321
2024-11-27 2024-11-27 PrS Proposed sale

Officer

Officer
650
394.34
US$256,321
650 394.34 US$256,321
2024-11-29 2024-11-26 S Sale

Chief Administrative Officer

Officer
1,275 -13.6%
387.68
US$494,295
1,275 -13.6% 387.68 US$494,295
2024-11-26 2024-11-26 PrS Proposed sale

Officer

Officer
1,275
387.68
US$494,295
1,275 387.68 US$494,295
2024-08-29 2024-08-28 B Purchase Non-Executive Director
725 +15.8%
340.08
US$246,558
725 +15.8% 340.08 US$246,558
2024-08-14 2024-08-12 S Sale

General Counsel

Officer
950 -3.9%
329.15
US$312,688
950 -3.9% 329.15 US$312,688
2024-08-14 2024-08-12 PlS Planned sale

Chief Administrative Officer

Officer
400 -4.1%
328.95
US$131,580
400 -4.1% 328.95 US$131,580
2024-08-12 2024-08-12 PrS Proposed sale

Officer

Officer
950
329.15
US$312,688
950 329.15 US$312,688
2024-08-12 2024-08-12 PrS Proposed sale

Officer

Officer
400
328.95
US$131,580
400 328.95 US$131,580
2024-07-30 2024-07-30 PrS Proposed sale

Officer

Officer
8,454
325.70
US$2,753,469
8,454 325.70 US$2,753,469
2024-07-30 2024-07-26 PlS Planned sale

General Counsel

Officer
6,597 -21.3%
310.00
US$2,045,070
6,597 -21.3% 310.00 US$2,045,070
2024-07-26 2024-07-26 PrS Proposed sale

Officer

Officer
6,597
310.00
US$2,045,070
6,597 310.00 US$2,045,070
2024-05-07 2024-05-03 B Purchase Non-Executive Director
1,109 +2.1%
277.50
US$307,748
1,109 +2.1% 277.50 US$307,748
2024-05-07 2024-05-03 B Purchase Non-Executive Director
2,426 +4.7%
276.72
US$671,184
2,426 +4.7% 276.72 US$671,184
2024-05-07 2024-05-03 B Purchase Non-Executive Director
1,466 +2.9%
275.76
US$404,126
1,466 +2.9% 275.76 US$404,126
2024-05-07 2024-05-03 B Purchase Non-Executive Director
1,109 +0.8%
277.50
US$307,748
1,109 +0.8% 277.50 US$307,748
2024-05-07 2024-05-03 B Purchase Non-Executive Director
2,426 +1.8%
276.72
US$671,184
2,426 +1.8% 276.72 US$671,184
2024-05-07 2024-05-03 B Purchase Non-Executive Director
1,466 +1.1%
275.76
US$404,126
1,466 +1.1% 275.76 US$404,126
2024-03-08 2024-03-06 S Sale

Chief People Officer

Officer
315 -3.1%
316.31
US$99,690
315 -3.1% 316.31 US$99,690
2024-03-06 2024-03-06 PrS Proposed sale

Officer

Officer
316
315.47
US$99,690
316 315.47 US$99,690
2024-03-05 2024-03-01 S Sale

President

Officer
5,500 -3.2%
313.74
US$1,725,568
5,500 -3.2% 313.74 US$1,725,568
2024-03-01 2024-03-01 PrS Proposed sale

Officer

Officer
5,500
313.74
US$1,725,568
5,500 313.74 US$1,725,568
2024-02-26 2024-02-23 S Sale

Chief People Officer

Officer
13,000 -56.3%
315.26
US$4,098,380
13,000 -56.3% 315.26 US$4,098,380
2024-02-23 2024-02-23 PrS Proposed sale

Officer

Officer
13,000
314.00
US$4,082,000
13,000 314.00 US$4,082,000
2024-02-20 2024-02-16 S Sale

Chief Financial Officer

Officer
40,164 -20.1%
313.29
US$12,583,167
40,164 -20.1% 313.29 US$12,583,167
2024-02-16 2024-02-16 PrS Proposed sale

Officer

Officer
40,165
311.28
US$12,502,396
40,165 311.28 US$12,502,396
2024-02-20 2024-02-15 S Sale

Principal Accounting Officer

Officer
750 -16.2%
312.00
US$234,000
750 -16.2% 312.00 US$234,000
2024-02-15 2024-02-15 PrS Proposed sale

Officer

Officer
750
312.00
US$234,000
750 312.00 US$234,000
2024-02-13 2024-02-12 S Sale

Chief Financial Officer

Officer
1,033 -0.6%
312.39
US$322,699
1,033 -0.6% 312.39 US$322,699
2024-02-13 2024-02-12 S Sale

Chief Financial Officer

Officer
12,836 -7.4%
311.66
US$4,000,468
12,836 -7.4% 311.66 US$4,000,468
2024-02-13 2024-02-12 S Sale

Chief Financial Officer

Officer
6,749 -3.7%
310.75
US$2,097,252
6,749 -3.7% 310.75 US$2,097,252
2024-02-12 2024-02-12 PrS Proposed sale

Officer

Officer
20,618
311.40
US$6,420,469
20,618 311.40 US$6,420,469
2024-02-09 2024-02-07 B Purchase Non-Executive Director
25,000 +100.0%
301.97
US$7,549,240
25,000 +100.0% 301.97 US$7,549,240
2024-02-09 2024-02-07 B Purchase Non-Executive Director
25,000 +22.9%
301.97
US$7,549,240
25,000 +22.9% 301.97 US$7,549,240
2023-08-24 2023-08-23 B Purchase Non-Executive Director
800 +25.0%
324.58
US$259,660
800 +25.0% 324.58 US$259,660
2023-05-11 2023-05-11 PrS Proposed sale

Officer

Officer
3,850
334.58
US$1,288,118
3,850 334.58 US$1,288,118
2023-05-11 2023-05-09 S Sale

President

Officer
7,500 -4.9%
335.55
US$2,516,662
7,500 -4.9% 335.55 US$2,516,662
2023-05-09 2023-05-09 PrS Proposed sale

Officer

Officer
7,500
335.55
US$2,516,662
7,500 335.55 US$2,516,662
2023-02-27 2023-02-27 PrS Proposed sale

Officer

Officer
2,096
304.83
US$638,924
2,096 304.83 US$638,924
2023-02-22 2023-02-21 PlS Planned sale

Chief Financial Officer

Officer
1,523 -0.8%
306.87
US$467,363
1,523 -0.8% 306.87 US$467,363
2023-02-22 2023-02-21 PlS Planned sale

Chief Financial Officer

Officer
3,797 -2.1%
306.11
US$1,162,300
3,797 -2.1% 306.11 US$1,162,300
2023-02-22 2023-02-21 PlS Planned sale

Chief Financial Officer

Officer
8,753 -4.5%
305.08
US$2,670,365
8,753 -4.5% 305.08 US$2,670,365
2023-02-22 2023-02-21 PlS Planned sale

Chief Financial Officer

Officer
6,455 -3.2%
304.15
US$1,963,288
6,455 -3.2% 304.15 US$1,963,288
2023-02-22 2023-02-17 PlS Planned sale

Chief Financial Officer

Officer
300 -0.2%
310.78
US$93,234
300 -0.2% 310.78 US$93,234
2023-02-22 2023-02-17 PlS Planned sale

Chief Financial Officer

Officer
47,099 -19.1%
310.19
US$14,609,639
47,099 -19.1% 310.19 US$14,609,639
2023-02-22 2023-02-17 PlS Planned sale

Chief Financial Officer

Officer
3,845 -1.5%
309.54
US$1,190,181
3,845 -1.5% 309.54 US$1,190,181
2023-02-21 2023-02-16 S Sale

Principal Accounting Officer

Officer
1,000 -45.1%
311.59
US$311,590
1,000 -45.1% 311.59 US$311,590
2023-02-14 2023-02-13 PlS Planned sale

Chief Financial Officer

Officer
617 -0.3%
318.36
US$196,428
617 -0.3% 318.36 US$196,428

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