HUDSON TECHNOLOGIES INC filings

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SEC filings by HUDSON TECHNOLOGIES INC (ownership)
TypeFiledFilerSubjectShares OwnedPercent Owned
SC 13G/A2016-02-05HEARTLAND ADVISORS INCHUDSON TECHNOLOGIES INC /NY2,500,0007.6%EDGAR
SC 13G/A2016-02-04PERRITT CAPITAL MANAGEMENT INCHUDSON TECHNOLOGIES INC /NY1,682,7505.1%EDGAR
SC 13G/A2015-07-02BLAIR WILLIAM & CO/ILHUDSON TECHNOLOGIES INC /NY2,973,5509.3%EDGAR
SC 13G/A2015-02-13PERRITT CAPITAL MANAGEMENT INCHUDSON TECHNOLOGIES INC /NY1,685,1505.3%EDGAR
SC 13G/A2015-02-13Becker Drapkin Management, L.P.HUDSON TECHNOLOGIES INC /NY2,436,1417.5%EDGAR
SC 13G2015-02-13HEARTLAND ADVISORS INCHUDSON TECHNOLOGIES INC /NY2,500,0007.8%EDGAR
SC 13G/A2015-02-10MARATHON CAPITAL MANAGEMENTHUDSON TECHNOLOGIES INC /NY1,663,6115.2%EDGAR
SC 13G/A2015-02-04BLAIR WILLIAM & CO/ILHUDSON TECHNOLOGIES INC /NY2,973,5509.3%EDGAR
SC 13G2014-06-16Becker Drapkin Management, L.P.HUDSON TECHNOLOGIES INC /NY2,225,8008.7%EDGAR
SC 13G/A2014-03-07BLAIR WILLIAM & CO/ILHUDSON TECHNOLOGIES INC /NY2,613,96710.4%EDGAR
SC 13G/A2014-02-14Becker Drapkin Management, L.P.HUDSON TECHNOLOGIES INC /NY625,0002.4%EDGAR
SC 13G2014-02-14PERRITT CAPITAL MANAGEMENT INCHUDSON TECHNOLOGIES INC /NY1,524,2006.1%EDGAR
SC 13G2014-02-06BLAIR WILLIAM & CO/ILHUDSON TECHNOLOGIES INC /NY2,152,9388.6%EDGAR
SC 13G/A2014-01-23MARATHON CAPITAL MANAGEMENTHUDSON TECHNOLOGIES INC /NY1,623,9646.5%EDGAR
SC 13D/A2013-03-29MANDRACCHIA STEPHEN PHUDSON TECHNOLOGIES INC /NY2,001,4458.0%EDGAR
SC 13D/A2013-03-29ZUGIBE KEVIN JHUDSON TECHNOLOGIES INC /NY4,635,92818.3%EDGAR
SC 13G/A2013-01-09MARATHON CAPITAL MANAGEMENTHUDSON TECHNOLOGIES INC /NY1,703,0647.1%EDGAR
SC 13D/A2012-09-18ZUGIBE KEVIN JHUDSON TECHNOLOGIES INC /NY5,022,30520.2%EDGAR
SC 13D2012-03-21MANDRACCHIA STEPHEN PHUDSON TECHNOLOGIES INC /NY2,225,6959.2%EDGAR
SC 13G/A2012-02-10Becker Drapkin Management, L.P.HUDSON TECHNOLOGIES INC /NY2,214,4519.1%EDGAR
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