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DWSN        0000799165    
Filing Date Form Type Description Document
2017-01-03 4 4 View Document
2017-01-03 4 4 View Document
2016-12-07 4 4 View Document
2016-12-07 4 4 View Document
2016-12-07 4 4 View Document
2016-11-16 4 4 View Document
2016-11-07 10-Q 10-Q View Document
2016-11-03 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2016-10-27 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2016-10-06 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2016-10-04 4 4 View Document
2016-10-04 4 4 View Document
2016-10-04 4 4 View Document
2016-10-04 4 4 View Document
2016-10-04 4 4 View Document
2016-10-04 4 4 View Document
2016-09-19 4 4 View Document
2016-08-09 10-Q QUARTERLY REPORT PURSUANT TO SECTIONS 13 OR 15(D) View Document
2016-08-04 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2016-08-02 SC 13G/A DWSN 13G GWI View Document
2016-07-28 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2016-07-18 S-8 SECURITIES TO BE OFFERED TO EMPLOYEES PURSUANT TO EMPLOYEE BENEFIT PLANS View Document
2016-07-01 4 4 View Document
2016-07-01 4 4 View Document
2016-07-01 4 4 View Document
2016-07-01 4 4 View Document
2016-07-01 4 4 View Document
2016-07-01 4 4 View Document
2016-06-03 4 4 View Document
2016-05-25 4 4 View Document
2016-05-16 4 4 View Document
2016-05-16 4 4 View Document
2016-05-16 4 4 View Document
2016-05-16 4 4 View Document
2016-05-16 4 4 View Document
2016-05-16 4 4 View Document
2016-05-10 10-Q QUARTERLY REPORT PURSUANT TO SECTIONS 13 OR 15(D) View Document
2016-05-10 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2016-05-05 8-K 8-K View Document
2016-05-04 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2016-04-13 4 4 View Document
2016-04-13 4 4 View Document
2016-04-13 4 4 View Document
2016-04-13 4 4 View Document
2016-04-13 4 4 View Document
2016-04-13 4 4 View Document
2016-03-25 DEF 14A DEF 14A View Document
2016-03-25 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2016-03-16 10-K 10-K View Document
2016-03-15 NT 10-K NOTICE OF INABILITY TO TIMELY FILE A FORM 10-K OR 10-KT View Document
2016-03-15 8-K/A AMENDMENT TO FORM 8-K View Document
2016-03-11 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2016-03-07 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2016-03-01 4/A 4/A View Document
2016-03-01 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2016-02-19 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2016-02-11 SC 13G/A ROBECO INVESTMENT MANAGEMENT INC. View Document
2016-02-09 SC 13G SCHEDULE 13G View Document
2016-02-04 SC 13G/A View Document
2016-01-28 SC 13G View Document
2016-01-21 SC 13G/A View Document
2015-12-04 SC 13G/A View Document
2015-12-04 3 PRIMARY DOCUMENT View Document
2015-12-03 4/A 4/A View Document
2015-12-03 4/A 4/A View Document
2015-12-03 4/A 4/A View Document
2015-12-03 4/A 4/A View Document
2015-12-03 4 4 View Document
2015-12-03 4 4 View Document
2015-12-02 4 4 View Document
2015-12-02 4 4 View Document
2015-12-02 4 4 View Document
2015-12-02 4 4 View Document
2015-11-06 10-Q QUARTERLY REPORT PURSUANT TO SECTIONS 13 OR 15(D) View Document
2015-11-05 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2015-10-29 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2015-09-23 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2015-08-07 10-Q QUARTERLY REPORT PURSUANT TO SECTIONS 13 OR 15(D) View Document
2015-08-07 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2015-07-31 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2015-07-02 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2015-06-16 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2015-06-10 4 4 View Document
2015-06-10 4 4 View Document
2015-06-10 4 4 View Document
2015-06-10 4 4 View Document
2015-06-05 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2015-06-02 S-8 SECURITIES TO BE OFFERED TO EMPLOYEES PURSUANT TO EMPLOYEE BENEFIT PLANS View Document
2015-05-18 10-Q QUARTERLY REPORT PURSUANT TO SECTIONS 13 OR 15(D) View Document
2015-05-18 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2015-05-08 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2015-05-08 NT 10-Q NOTICE OF INABILITY TO TIMELY FILE A FORM 10-Q View Document
2015-04-30 8-K/A AMENDMENT TO FORM 8-K View Document
2015-04-30 DEF 14A DEF 14A View Document
2015-03-23 10-QT 10-QT View Document
2015-03-23 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2015-03-16 10-K ANNUAL REPORT PURSUANT TO SECTION 13 AND 15(D) View Document
2015-03-10 SC 13G/A View Document
2015-03-02 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document
2015-02-25 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES View Document

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