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HDSN        0000925528    
Filing Date Form Type Description Document
2021-02-12 SC 13G HDSN1362020 View Document
2021-02-08 SC 13G/A AMENDMENT NO. 3 TO SCHEDULE 13G View Document
2021-01-12 EFFECT View Document
2021-01-12 S-3/A S-3/A View Document
2021-01-06 CORRESP View Document
2021-01-04 UPLOAD View Document
2020-12-29 8-K FORM 8-K View Document
2020-12-23 S-3 S-3 View Document
2020-12-17 4 PRIMARY DOCUMENT View Document
2020-12-03 4 PRIMARY DOCUMENT View Document
2020-11-18 4 PRIMARY DOCUMENT View Document
2020-11-10 10-Q FORM 10-Q View Document
2020-11-05 8-K FORM 8-K View Document
2020-09-16 8-K FORM 8-K View Document
2020-09-16 4 PRIMARY DOCUMENT View Document
2020-09-16 3 PRIMARY DOCUMENT View Document
2020-09-16 3 PRIMARY DOCUMENT View Document
2020-09-01 3 PRIMARY DOCUMENT View Document
2020-09-01 8-K FORM 8-K View Document
2020-08-11 4 PRIMARY DOCUMENT View Document
2020-08-11 8-K FORM 8-K View Document
2020-08-05 10-Q FORM 10-Q View Document
2020-08-05 8-K FORM 8-K View Document
2020-08-03 8-K FORM 8-K View Document
2020-07-22 4 PRIMARY DOCUMENT View Document
2020-07-22 4 PRIMARY DOCUMENT View Document
2020-07-22 4 PRIMARY DOCUMENT View Document
2020-07-22 4 PRIMARY DOCUMENT View Document
2020-07-22 4 PRIMARY DOCUMENT View Document
2020-07-22 4 PRIMARY DOCUMENT View Document
2020-07-22 4 PRIMARY DOCUMENT View Document
2020-07-20 8-K FORM 8-K View Document
2020-06-30 S-8 S-8 View Document
2020-06-24 8-K FORM 8-K View Document
2020-06-12 8-K FORM 8-K View Document
2020-05-15 10-Q FORM 10-Q View Document
2020-05-06 8-K FORM 8-K View Document
2020-04-28 DEFA14A DEFA14A View Document
2020-04-28 DEF 14A DEF 14A View Document
2020-04-20 8-K FORM 8-K View Document
2020-04-09 PRE 14A PRE 14A View Document
2020-03-13 10-K FORM 10-K View Document
2020-03-04 8-K 8-K View Document
2020-02-14 SC 13G/A SCHEDULE 13G HOLDINGS REPORT AMENDMENT View Document
2020-02-12 SC 13G/A PEKIN SINGER STRAUSS ASSET MANAGEMENT, INC View Document
2020-02-12 SC 13G/A SC 13G/A View Document
2020-02-12 SC 13G/A SCHEDULE 13G/A View Document
2020-02-11 SC 13G/A HDSN201913G View Document
2020-02-07 SC 13G/A View Document
2020-01-31 SC 13G/A AMENDMENT NO. 2 TO SCHEDULE 13G View Document
2020-01-30 8-K FORM 8-K View Document
2020-01-07 4/A PRIMARY DOCUMENT View Document
2020-01-06 3 PRIMARY DOCUMENT View Document
2020-01-06 3 PRIMARY DOCUMENT View Document
2020-01-03 8-K FORM 8-K View Document
2020-01-02 3 PRIMARY DOCUMENT View Document
2019-12-23 4 PRIMARY DOCUMENT View Document
2019-12-23 4 PRIMARY DOCUMENT View Document
2019-12-23 4 PRIMARY DOCUMENT View Document
2019-12-23 4 PRIMARY DOCUMENT View Document
2019-12-23 4 PRIMARY DOCUMENT View Document
2019-12-23 4 PRIMARY DOCUMENT View Document
2019-12-23 4 PRIMARY DOCUMENT View Document
2019-12-23 4 PRIMARY DOCUMENT View Document
2019-12-20 8-K FORM 8-K View Document
2019-11-15 10-Q FORM 10-Q View Document
2019-11-14 8-K 8-K View Document
2019-11-12 8-K FORM 8-K View Document
2019-11-12 NT 10-Q NT 10-Q View Document
2019-09-23 8-K FORM 8-K View Document
2019-08-29 4 PRIMARY DOCUMENT View Document
2019-08-29 4 PRIMARY DOCUMENT View Document
2019-08-29 4 PRIMARY DOCUMENT View Document
2019-08-29 4 PRIMARY DOCUMENT View Document
2019-08-29 4 PRIMARY DOCUMENT View Document
2019-08-14 10-Q FORM 10-Q View Document
2019-08-14 8-K FORM 8-K View Document
2019-08-09 NT 10-Q NT 10-Q View Document
2019-08-02 8-K FORM 8-K View Document
2019-07-29 SC 13G HUDSON TECHNOLOGIES View Document
2019-07-10 SC 13G/A View Document
2019-06-11 8-K FORM 8-K View Document
2019-05-28 4 PRIMARY DOCUMENT View Document
2019-05-15 4 PRIMARY DOCUMENT View Document
2019-05-13 4 PRIMARY DOCUMENT View Document
2019-05-09 4 PRIMARY DOCUMENT View Document
2019-05-03 4 PRIMARY DOCUMENT View Document
2019-05-03 4 PRIMARY DOCUMENT View Document
2019-05-02 10-Q FORM 10-Q View Document
2019-05-01 8-K FORM 8-K View Document
2019-04-26 DEFA14A DEFA14A View Document
2019-04-26 DEF 14A DEFINITIVE PROXY STATEMENT View Document
2019-03-15 10-K FORM 10-K View Document
2019-03-06 8-K FORM 8-K View Document
2019-02-22 4 PRIMARY DOCUMENT View Document
2019-02-14 SC 13G/A SCHEDULE 13G HOLDINGS REPORT AMENDMENT View Document
2019-02-13 SC 13G/A View Document
2019-02-13 SC 13G View Document
2019-02-12 SC 13G SC 13G View Document
2019-02-11 SC 13G/A PEKIN SINGER STRAUSS ASSET MANAGEMENT, INC View Document

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