CONWAY MICHAEL A 4

4 · AON CORP · Filed Mar 20, 2006

Form 4

Period: 2006-03-16

Senior VP and Investment Ofr

Transactions

Exercise/Conversion
Common Stock
2006-03-17+143→ 61,696 total
Exercise/Conversion
Restricted Stock Unit Award (Right to Receive)
2006-03-17−143→ 499 total
From: 2006-03-17Exp: 2006-03-17→ Common Stock (143 underlying)
Exercise/Conversion
Common Stock
2006-03-19+750→ 62,403 total
Tax Payment
Common Stock
2006-03-19$41.37/sh−221$9,142→ 62,182 total
Award
Restricted Stock Unit Award (Right to Receive)
2006-03-16+1,275→ 1,275 total
From: 2007-03-16Exp: 2009-03-16→ Common Stock (1,275 underlying)
Exercise/Conversion
Restricted Stock Unit Award (Right to Receive)
2006-03-19−750→ 3,000 total
From: 2006-03-19Exp: 2006-03-19→ Common Stock (750 underlying)
Tax Payment
Common Stock
2006-03-17$41.37/sh−43$1,779→ 61,653 total

Holdings

Footnotes (4)

[F1]Shares of common stock acquired upon the vesting of a restricted stock award.
[F2]Shares of common stock withheld by the issuer for the payment of withholding taxes in connection with the vesting of a restricted stock award.
[F3]The restricted stock unit award converts to shares of common stock on a 1-for-1 basis.
[F4]Restricted stock units will vest in accordance with the Aon Stock Incentive Plan as follows: 22.22% of the awards will vest on each of the first and second anniversaries of the date of grant, and 55.56% of the awards will vest on the third anniversary of the date of grant.

Documents

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