X0303 4 2011-05-01 0000018396 CDI CORP CDI 0000903921 GARRISON WALTER R C/O CDI CORP. 1717 ARCH ST., 35TH FLOOR PHILADELPHIA PA 19103-2768 1 0 0 1 Chairman of the Board Common Stock 2011-05-01 4 M 0 4532 0 A 1131305 D Common Stock 2011-05-01 4 A 0 2196 14.82 A 1133501 D Common Stock 20677 I Trustee of trust for spouse Common Stock 45438 I By Spouse Common Stock 37740 I Co-Trustee of trusts for grandchildren Common Stock 84 I By Spouse as trustee Stock Purchase Plan Units 2011-05-01 4 M 0 4532 14.71 D 2011-05-01 2011-05-01 Common Stock 4532 0 D The price set forth in this column represents the market price of Common Stock on the date that Stock Purchase Plan units vested and therefore the date that additional shares of Common Stock relating to dividends (which accrued during the period from the date the units were acquired and the vesting date) were earned. Upon vesting, Stock Purchase Plan units convert into shares of Common Stock on a 1-for-1 basis. This was the closing price per share of Common Stock on the date that the Stock Purchase Plan units were acquired (5/01/2001). Walter R. Garrison 2011-05-03