Insider Stock Transactions   Below is a listing of reports filed since 31-AUG-10 with the U.S. Securities and Exchange Commission to disclose transactions involving Ecolab Inc. securities by those executive officers, directors and stockholders of Ecolab Inc. subject to Section 16 of the Securities Exchange Act of 1934. The hyperlinks in the table below lead to the respective Section 16 reports of Ecolab's executive officers, directors and principal stockholders filed since 31-AUG-10.   Reporting Person   Title Date Report Filed With SEC Executive Officers Securities Acquired and Initial Reports Securities Disposed Baker, Douglas M.   Chariman of the Board and Chief Executive Officer  07-OCT-11 |  15-DEC-10 |  03-DEC-10  23-FEB-11 Beck, Christophe   Executive Vice President - Institutional  03-DEC-10   Berger, Larry L.   Senior Vice President and Chief Technical Officer  03-DEC-10  03-MAY-11 Corkrean, John J.   Vice President and Corporate Controller  15-NOV-11 |  03-DEC-10   Fritze, Steven L.   Chief Financial Officer  03-DEC-10  03-DEC-10 Handley, Thomas W.   President - Global Food & Beverage and APLA Sectors  03-DEC-10   Hickey, Michael A.   Executive Vice President - Global Services Sector  10-DEC-10 |  03-DEC-10  10-DEC-10 Inchaustegui, Roberto   Executive Vice President - Global Specialty Sector  09-MAY-11  13-MAY-11 Mason, Phillip J.   President - EMEA Sector  13-MAY-11 |  03-DEC-10  14-SEP-11 Meyer, Michael L.   Senior Vice President - Human Resources  03-DEC-10  22-FEB-11 Miller, James A.   President - Global Services & Specialty Sector  09-NOV-11 |  15-DEC-10 |  03-DEC-10   Nestegard, Susan K.   President, Global Healthcare Sector  20-MAY-11 |  03-DEC-10   Seifert, James J.   General Counsel and Secretary  03-DEC-10  05-AUG-11 Temple, Greg E.   Executive Vice President and Chief Supply Chain Officer  06-MAY-11 |  28-APR-11   White, James H.   President - APLA Sector  03-DEC-10         Non-Employee Directors Securities Acquired and Initial Reports Securities Disposed Beck, Barbara J.   Director  04-OCT-11 |  01-JUL-11 |  06-MAY-11 |  04-APR-11 |  04-JAN-11 |  01-OCT-10   Biller, Leslie S.   Director  04-OCT-11 |  01-JUL-11 |  27-MAY-11 |  06-MAY-11 |  04-APR-11 |  04-JAN-11 |  01-OCT-10   Grundhofer, Jerry A.   Director  04-OCT-11 |  01-JUL-11 |  06-MAY-11 |  04-APR-11 |  04-JAN-11 |  01-OCT-10   Higgins, Arthur J.   Director  04-OCT-11 |  09-AUG-11 |  01-JUL-11 |  06-MAY-11 |  04-APR-11 |  04-JAN-11 |  01-OCT-10   Johnson, Joel W.   Director  04-OCT-11 |  01-JUL-11 |  06-MAY-11 |  27-APR-11 |  04-APR-11 |  04-JAN-11 |  01-OCT-10   Levin, Jerry W.   Director  04-OCT-11 |  20-SEP-11 |  01-JUL-11 |  06-MAY-11 |  04-APR-11 |  04-JAN-11 |  01-OCT-10  28-OCT-11 |  16-NOV-10 Lumpkins, Robert L.   Director  04-OCT-11 |  01-JUL-11 |  17-MAY-11 |  06-MAY-11 |  04-APR-11 |  04-JAN-11 |  01-OCT-10   O'Hara, C. Scott   Director  04-OCT-11 |  01-JUL-11 |  06-MAY-11 |  04-APR-11 |  04-JAN-11 |  01-OCT-10   Reich, Victoria J.   Director  04-OCT-11 |  01-JUL-11 |  06-MAY-11 |  04-APR-11 |  04-JAN-11 |  01-OCT-10   Zillmer, John J.   Director  04-OCT-11 |  01-JUL-11 |  06-MAY-11 |  04-APR-11 |  04-JAN-11 |  01-OCT-10         Principal Stockholders Securities Acquired and Initial Reports Securities Disposed               Former Reporting Persons     Tabb, Robert P.   Vice President and Chief Information Officer  03-DEC-10