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ION - As of  04/30/25, 01:08:05 PM:   58 Insider Transactions.

Sector: Technology    Industry: Scientific & Technical Instruments
Prev Close:$6.12  Avg Vol(3m): 104,975  P/E: 0.00  EPS: -0.45

Email this page to a friend.    Insider Transactions for ION

Buy/Sell* Filed Date Subject Symbol Acquirer Pct Owned Details
S 2006-02-16 00:00:00.0 IONICS INC ION ADVISORY RESEARCH INC n/a view
S 2005-03-08 00:00:00.0 IONICS INC ION PRICE T ROWE ASSOCIATES INC 0.0% view
S 2005-02-15 00:00:00.0 IONICS INC ION ADVISORY RESEARCH INC 7.325% view
S 2005-02-14 00:00:00.0 IONICS INC ION FMR CORP n/a view
S 2005-02-14 00:00:00.0 IONICS INC ION PRICE T ROWE ASSOCIATES INC 10.0% view
B 2005-02-09 00:00:00.0 IONICS INC ION DIMENSIONAL FUND ADVISORS INC 7.31% view
B 2005-02-07 00:00:00.0 IONICS INC ION GABELLI ASSET MANAGEMENT INC ET AL 2.84% view
B 2004-12-03 00:00:00.0 IONICS INC ION GENERAL ELECTRIC CO 19.3% view
B 2004-12-03 00:00:00.0 IONICS INC ION DICKERSON LYMAN B REVOCABLE TRUST 9.49% view
S 2004-03-01 00:00:00.0 IONICS INC ION DICKERSON LYMAN B REVOCABLE TRUST 8.6% view
B 2004-02-23 00:00:00.0 IONICS INC ION DICKERSON LYMAN B REVOCABLE TRUST 8.6% view
S 2004-02-17 00:00:00.0 IONICS INC ION FMR CORP n/a view
B 2004-02-17 00:00:00.0 IONICS INC ION ADVISORY RESEARCH INC 7.85% view
B 2004-02-10 00:00:00.0 IONICS INC ION PRICE T ROWE ASSOCIATES INC 12.8% view
B 2004-02-06 00:00:00.0 IONICS INC ION DIMENSIONAL FUND ADVISORS INC 6.84% view
B 2003-06-09 00:00:00.0 IONICS INC ION PRICE T ROWE ASSOCIATES INC 11.3% view
S 2003-02-13 00:00:00.0 IONICS INC ION CAPITAL RESEARCH & MANAGEMENT CO 4.9% view
S 2003-02-11 00:00:00.0 IONICS INC ION CAPITAL GROUP INTERNATIONAL INC 0.0% view
B 2003-02-11 00:00:00.0 IONICS INC ION DIMENSIONAL FUND ADVISORS INC 6.3% view
S 2003-01-10 00:00:00.0 IONICS INC ION FMR CORP n/a view
B 2002-02-14 00:00:00.0 IONICS INC ION FMR CORP n/a view
S 2002-02-14 00:00:00.0 IONICS INC ION HARTFORD CAPITAL APPRECIATION HLS FUND INC 4.8% view
S 2002-02-12 00:00:00.0 IONICS INC ION WELLINGTON MANAGEMENT CO LLP 4.77% view
S 2002-02-12 00:00:00.0 IONICS INC ION DIMENSIONAL FUND ADVISORS INC n/a view
B 2002-02-11 00:00:00.0 IONICS INC ION CAPITAL RESEARCH & MANAGEMENT CO 6.9% view
B 2002-02-11 00:00:00.0 IONICS INC ION CAPITAL GROUP INTERNATIONAL INC 6.8% view
S 2001-02-14 00:00:00.0 IONICS INC ION HARTFORD CAPITAL APPRECIATION HLS FUND INC 5.76% view
S 2001-02-13 00:00:00.0 IONICS INC ION WELLINGTON MANAGEMENT CO LLP 10.17% view
B 2001-02-12 00:00:00.0 IONICS INC ION CAPITAL GROUP INTERNATIONAL INC 5.8% view
S 2001-02-12 00:00:00.0 IONICS INC ION CAPITAL RESEARCH & MANAGEMENT CO 6.1% view
B 2001-02-02 00:00:00.0 IONICS INC ION DIMENSIONAL FUND ADVISORS INC n/a view
B 2001-01-19 00:00:00.0 IONICS INC ION LORD ABBETT & CO 8.75% view
B 2000-02-11 00:00:00.0 IONICS INC ION CAPITAL RESEARCH & MANAGEMENT CO 9.0% view
S 2000-02-11 00:00:00.0 IONICS INC ION WELLINGTON MANAGEMENT CO LLP 12.66% view
S 2000-02-11 00:00:00.0 IONICS INC ION HARTFORD CAPITAL APPRECIATION HLS FUND INC 5.78% view
B 2000-02-11 00:00:00.0 IONICS INC ION CAPITAL GROUP INTERNATIONAL INC 4.5% view
B 1999-02-12 00:00:00.0 IONICS INC ION CAPITAL GUARDIAN TRUST CO 6.0% view
S 1999-02-12 00:00:00.0 IONICS INC ION DENVER INVESTMENT ADVISORS LLC 1.0% view
B 1999-02-11 00:00:00.0 IONICS INC ION CAPITAL RESEARCH & MANAGEMENT CO 8.5% view
B 1999-02-10 00:00:00.0 IONICS INC ION WELLINGTON MANAGEMENT CO LLP 13.99% view
B 1999-02-09 00:00:00.0 IONICS INC ION HARTFORD CAPITAL APPRECIATION HLS FUND INC 5.81% view
S 1998-03-10 00:00:00.0 IONICS INC ION PILGRIM BAXTER & ASSOCIATES LTD 0.0% view
S 1998-02-12 00:00:00.0 IONICS INC ION DENVER INVESTMENT ADVISORS LLC 6.3% view
B 1998-02-10 00:00:00.0 IONICS INC ION WELLINGTON MANAGEMENT CO LLP 13.18% view
B 1997-12-10 00:00:00.0 IONICS INC ION WELLINGTON MANAGEMENT CO LLP 10.68% view
S 1997-03-12 00:00:00.0 IONICS INC ION PILGRIM BAXTER & ASSOCIATES LTD 1.0% view
S 1997-02-13 00:00:00.0 IONICS INC ION WELLINGTON MANAGEMENT CO LLP 3.07% view
S 1997-02-12 00:00:00.0 IONICS INC ION DENVER INVESTMENT ADVISORS LLC 7.0% view
S 1996-08-20 00:00:00.0 IONICS INC ION SAVENA TRUST 5.98% view
B 1996-03-08 00:00:00.0 IONICS INC ION PILGRIM BAXTER & ASSOCIATES LTD 4.5% view
B 1996-02-27 00:00:00.0 IONICS INC ION DENVER INVESTMENT ADVISORS LLC 8.5% view
S 1996-02-12 00:00:00.0 IONICS INC ION WELLINGTON MANAGEMENT CO 5.52% view
B 1995-02-02 00:00:00.0 IONICS INC ION WELLINGTON MANAGEMENT CO 8.06% view
S 1994-11-10 00:00:00.0 IONICS INC ION TERRA DANIEL J n/a view
B 1994-07-28 00:00:00.0 IONICS INC ION SAVENA TRUST 8.47% view
B 1994-02-14 00:00:00.0 IONICS INC ION FIRST INTERSTATE BANCORP n/a view
B 1994-02-09 00:00:00.0 IONICS INC ION TERRA DANIEL J n/a view
B 1994-02-09 00:00:00.0 IONICS INC ION TERRA DANIEL J 5.1% view
* Institutions do not report transaction buy/sell types directly. To help members better understand the transactions, this column is filled by InsiderCow's best-effort interpretations.