RIESER RICHARD M JR 4

4 · FIRST OAK BROOK BANCSHARES INC · Filed Aug 29, 2006

Form 4

Period: 2006-08-25

DirectorPresident

Transactions

Disposition to Issuer
Common Stock
2006-08-25−50,834→ 0 total(indirect: By Spouse)
Disposition to Issuer
Common Stock
2006-08-25−10,104→ 0 total(indirect: By Trust)
Disposition to Issuer
Common Stock
2006-08-25−12,781→ 0 total(indirect: Stock Bonus Plan)
Disposition to Issuer
Employee Stock Options (Right to Buy)
2006-08-25−20,000→ 0 total
Exercise: $27.78From: 2007-01-24Exp: 2013-01-24→ Common (20,000 underlying)
Disposition to Issuer
Employee Stock Options
2006-08-25−15,000→ 0 total
Exercise: $33.70From: 2005-01-27Exp: 2014-01-27→ Common (15,000 underlying)
Disposition to Issuer
Common Stock
2006-08-25−670,162→ 0 total
Disposition to Issuer
Employee Stock Options (Right to Buy)
2006-08-25−16,500→ 0 total
Exercise: $29.42From: 2006-01-31Exp: 2012-01-31→ Common (16,500 underlying)

Footnotes (3)

[F1]Disposed of pursuant to merger agreement between FOBB and MB Financial, Inc. (MBFI) in exchange for $37.43 per share of value in either cash, MBFI common stock, or a combination of both.
[F2]Disposed of pursuant to merger agreement between FOBB and MBFI.
[F3]This option was assumed by MBFI pursuant to the merger agreement and replaced with an option to purchase shares of MBFI common stock.

Documents

2 files