AON

Aon plc

Insider activity for last month from 08/04 to 09/04. Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.

Latest filingSep 04, 2026Most recent Form 4
Total buying$654M6 buys
Total selling$00 sells
Net open-market+$654M1 insiders
Open-market mix
Buy vs sell distribution by transaction count
6 transactions
6 buys100%·0%0 sells

Insider activity report

Monthly open-market purchase and sale counts
Buys Sells
1050-5-10transactionsAugSep 2026 buys: 6 transactions · $654M6Sep

Transaction codes

By Form 4 transaction code in selected period
6transactions
  • P · Open-market buys · dominant6 · 100%

Activity by reported role

A joint filing can contribute to multiple roles
6transactions
  • Director · dominant6 · 100%

Distinct insiders active

Reporting-owner CIKs by month · peak Sep 2026 (1)
Aug 2026Sep 2026
1distinct insiders in 2 months

Reported Holdings After

Separated by insider, security, and ownership type
Knight Lester BClass A Ordinary Stock · Indirect · By Family Partnership
163.0k144.7kSep 02, 2026 · 144,739 shares owned afterSep 02, 2026 · 149,836 shares owned afterSep 02, 2026 · 157,048 shares owned afterSep 02, 2026 · 161,193 shares owned afterSep 02, 2026 · 162,633 shares owned afterSep 02, 2026 · 163,000 shares owned afterSep 02, 2026Sep 02, 2026
163,000Sep 02, 2026

These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.

Filing activity heatmap
Each cell is one day · intensity = transactions · buys green, sells red
1 active days
Aug 04 → Sep 04
LessMore
Top insiders
By absolute net value across the selected period
1 insiders
  • KB
    Knight Lester BDIR · rank 1 · 6 buys · 0 sells
    +$6.5Mlast 09/04/undefined
Recent filing activity
Most recent 6 transactions · color = transaction code

Filing detail checks

Secondary metrics for the selected period
Largest buy$236M
Largest sale-
10b5-1 detected0
Amended rows0

Filing-only signals

Deterministic matches in the selected period

No filing-only signal badges matched this period.

AON transaction history

Filters apply within this company and selected period by default
Type
AllBuySell
Reset
Suggested filters
Open-marketCodes P + SInsider buyingCode PInsider sellingCode SLarge buysP · value sort10b5-1 detectedPlan text
Clear
TickerInsiderRoleTypeSharesValueCodeSignals90d returnFiledTrans date
AONKNIGHT LESTER B
DIR
buy367$12.1MP—0.0%09/0409/02
AONKNIGHT LESTER B
DIR
buy1.44k$47.4MP—0.0%09/0409/02
AONKNIGHT LESTER B
DIR
buy4.14k$136MP—0.0%09/0409/02
AONKNIGHT LESTER B
DIR
buy7.21k$236MP—0.0%09/0409/02
AONKNIGHT LESTER B
DIR
buy5.09k$166MP—0.0%09/0409/02
AONKNIGHT LESTER B
DIR
buy1.73k$56.6MP—0.0%09/0409/02

Aon plc Insider Activity FAQ

SEC Form 4 context

Who recently reported transactions at Aon plc?

KNIGHT LESTER B.

When was the latest reported open-market purchase?

Knight Lester B reported a buy on Sep 02, 2026 valued at $12.1M. Read the SEC filing.

When was the latest reported open-market sale?

No code-S sale is available for this period.

What is the recent purchase and sale balance?

Net open-market buying in the selected period was $6,549,688.29. This describes filed transactions, not a bullish rating.

Where can I see the original SEC filing?

Every transaction row and latest-activity fact links to its original SEC filing.

What do these Form 4 transaction codes mean?

P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.