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AON

Aon plc insider trading

Financials · Net buying
Close · Oct 5, 2026 $272.05 -25.2% over 12 months

Share price and insider trades

AON closeInsider buyInsider sale
250300350400NovDecJan 2026FebMarAprMayJunJulAugSepOctSold $216,000 on 2026-07-07 · Darren ZeidelSold $717,750 on 2026-07-28 · Darren ZeidelSold $725,500 on 2026-07-17 · Darren ZeidelBought $1,276,956 on 2026-02-10 · Lester B KnightSold $1,417,784 on 2026-02-26 · Darren ZeidelSold $1,641,982 on 2026-02-17 · Darren ZeidelSold $3,031,818 on 2025-11-05 · Darren ZeidelBought $6,549,688 on 2026-09-02 · Lester B Knight
Bought, 12 months$7.8M
Sold, 12 months$7.8M
Insiders buying1
Insiders selling1

Valuation, profit and volume

Pick score 52/100
P/E (trailing)15.0Sector median 17.8
Market value$57.71BInsurance Brokers
Profit margin22.3%Revenue growth +2.2%
Volume vs. 50-day1.2×Last 5 sessions
Insiders' paper profit−$1.3MOn all tracked purchases -16.6%

Summary

Over the past 12 months, 1 Aon plc insider reported open-market purchases totaling $7.8M, while 1 insider reported sales totaling $7.8M. 8 of 11 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.

News and SEC events

Recent 8-K filings and headlines. Tone is scored from the headline wording; “Policy” marks regulatory, trade or government topics.

Insider transactions

Open-market purchases and sales. 90 grants, option exercises and tax withholdings are not shown.

Filed Insider Type Shares Price Value Since Score
Sep 3SEC Lester B KnightDirector Buy 7,212 $327.52 $2.4M -16.9% —
Sep 3SEC Lester B KnightDirector Buy 5,097 $326.53 $1.7M -16.7% —
Sep 3SEC Lester B KnightDirector Buy 4,145 $328.34 $1.4M -17.1% —
Sep 3SEC Lester B KnightDirector Buy 1,739 $325.63 $566K -16.5% —
Sep 3SEC Lester B KnightDirector Buy 1,440 $329.69 $475K -17.5% —
Sep 3SEC Lester B KnightDirector Buy 367 $330.51 $121K -17.7% —
Jul 30SEC Darren ZeidelGeneral Counsel Sell Plan 725 $378.00 $274K -28.0% —
Jul 30SEC Darren ZeidelGeneral Counsel Sell Plan 700 $376.00 $263K -27.6% —
Jul 30SEC Darren ZeidelGeneral Counsel Sell Plan 475 $380.00 $180K -28.4% —
Jul 21SEC Darren ZeidelGeneral Counsel Sell Plan 675 $374.00 $252K -27.3% —
Jul 21SEC Darren ZeidelGeneral Counsel Sell Plan 650 $372.00 $242K -26.9% —
Jul 21SEC Darren ZeidelGeneral Counsel Sell Plan 625 $370.00 $231K -26.5% —
Jul 9SEC Darren ZeidelGeneral Counsel Sell Plan 600 $360.00 $216K -24.4% —
Mar 2SEC Darren ZeidelGeneral Counsel Sell 4,300 $329.72 $1.4M -17.5% —
Feb 19SEC Darren ZeidelGeneral Counsel Sell Plan 5,040 $325.79 $1.6M -16.5% —
Feb 12SEC Lester B KnightDirector Buy 4,000 $319.24 $1.3M -14.8% —
Nov 7SEC Darren ZeidelGeneral Counsel Sell 7,570 $344.42 $2.6M -21.0% —
Nov 7SEC Darren ZeidelGeneral Counsel Sell 1,230 $345.17 $425K -21.2% —

Insiders at Aon plc

InsiderBoughtSoldLast filingScore
Lester B KnightDirector $7.8M — Sep 3, 2026 —
Darren ZeidelGeneral Counsel — $7.8M Jul 30, 2026 —
Edmund ReeseCFO — — Jul 6, 2026 —
Jin-yong CaiDirector — — Jun 29, 2026 —
Jose Antonio AlvarezDirector — — Jun 29, 2026 —
Adriana KaraboutisDirector — — Jun 29, 2026 —
Jo Ann JenkinsDirector — — Jun 29, 2026 —
Sarah G SmithDirector — — Jun 29, 2026 —
Byron SpruellDirector — — Jun 29, 2026 —
Jeffrey C CampbellDirector — — Jun 29, 2026 —
Gloria SantonaDirector — — Jun 29, 2026 —
Richard C NotebaertDirector — — Jun 29, 2026 —
James G. StavridisDirector — — Jun 29, 2026 —
Cheryl A FrancisDirector — — Jun 29, 2026 —
Andy MarcellCEO — — Mar 17, 2026 —
Lori GoltermannCEO — — Mar 17, 2026 —
Anne CoronaChief Commercial Officer — — Mar 17, 2026 —
Gregory C CaseCEO, President — — Feb 20, 2026 —
Lisa StevensChief Administrative Officer — — Feb 19, 2026 —
Mindy F. SimonCOO — — Feb 17, 2026 —

Insider activity at other Financials companies

Same sector, ranked by insider buying in the last 90 days.

  • TFCTruist Financial$1.0M bought
  • MSCIMSCI$1.0M bought
  • FISVFiserv$520K bought
  • BRK-BBerkshire Hathaway$250K bought
  • CINFCincinnati Financial$172K bought
  • CMECME Group$79K bought

Common questions about AON insiders

Are Aon plc insiders buying AON stock?

In the past 12 months, 1 insiders reported open-market purchases of AON worth $7.8M. The latest was Director Lester B Knight bought $2.4M of AON at $327.52 — largest purchase by this insider in our records.

Are Aon plc insiders selling AON stock?

1 insiders reported sales worth $7.8M over the same period.

Where does this data come from?

Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.