GSE SYSTEMS INC

Business address
6940 Columbia Gateway Drive, Suite 470, Columbia, MD, 21046-3308
State of incorporation
DE
Fiscal year end
31 December
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GSE SYSTEMS INC has filed 1,306 SEC EDGAR filings since 14 Feb 1996

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
SCHEDULE 13G/A Open Document Open Filing 14 Feb 2025 005-45371
SC 13G/A Open Document Open Filing 14 Nov 2024 005-45371
EFFECT Open Document Open Filing 13 Nov 2024 333-276128
EFFECT Open Document Open Filing 13 Nov 2024 333-264114
15-12G Open Document Open Filing 15-12G 13 Nov 2024 001-14785
POS AM Open Document Open Filing POS AM 08 Nov 2024 333-276128
POS AM Open Document Open Filing POS AM 08 Nov 2024 333-264114
S-8 POS Open Document Open Filing S-8 POS 08 Nov 2024 333-212241
S-8 POS Open Document Open Filing S-8 POS 08 Nov 2024 333-183427
S-8 POS Open Document Open Filing S-8 POS 08 Nov 2024 333-150249
S-8 POS Open Document Open Filing S-8 POS 08 Nov 2024 333-138702
S-8 POS Open Document Open Filing S-8 POS 08 Nov 2024 333-08805
25-NSE Open Document Open Filing 01 Nov 2024 001-14785
8-K Open Document | Data Open Filing 8-K 01 Nov 2024 31 Oct 2024 001-14785
8-K Open Document | Data Open Filing 8-K 29 Oct 2024 29 Oct 2024 001-14785
DEFA14A Open Document Open Filing DEFA14A 25 Oct 2024 001-14785
8-K Open Document | Data Open Filing 8-K 25 Oct 2024 25 Oct 2024 001-14785
DEFA14A Open Document Open Filing DEFA 14A 23 Oct 2024 001-14785
8-K Open Document | Data Open Filing 8-K 23 Oct 2024 23 Oct 2024 001-14785
DEFA14A Open Document Open Filing DEFA 14A 22 Oct 2024 001-14785
8-K Open Document | Data Open Filing 8-K 22 Oct 2024 22 Oct 2024 001-14785
DEFA14A Open Document Open Filing DEFA 14A 21 Oct 2024 001-14785
8-K Open Document | Data Open Filing 8-K 21 Oct 2024 18 Oct 2024 001-14785
DEFA14A Open Document Open Filing DEFA14A 18 Oct 2024 001-14785
8-K Open Document | Data Open Filing 8-K 18 Oct 2024 14 Oct 2024 001-14785
DEFA14A Open Document Open Filing DEFA14A 16 Oct 2024 001-14785
8-K Open Document | Data Open Filing 8-K 16 Oct 2024 16 Oct 2024 001-14785
DEFA14A Open Document Open Filing DEFA14A 15 Oct 2024 001-14785
SC 13D Open Document Open Filing SCHEDULE 13D 11 Oct 2024 005-45371
DEFA14A Open Document Open Filing DEF14A 08 Oct 2024 001-14785
8-K Open Document | Data Open Filing 8-K 08 Oct 2024 02 Oct 2024 001-14785
4 Open Document Open Filing 02 Oct 2024 30 Sep 2024
4 Open Document Open Filing 02 Oct 2024 30 Sep 2024
4 Open Document Open Filing 02 Oct 2024 30 Sep 2024
4 Open Document Open Filing 02 Oct 2024 30 Sep 2024
DEFM14A Open Document Open Filing DEFM14A 18 Sep 2024 001-14785
DEFM14A Open Document Open Filing DEFM14A 16 Sep 2024 001-14785
PREM14A Open Document Open Filing PREM14A 04 Sep 2024 04 Sep 2024 001-14785
10-Q Open Document | Data Open Filing 10-Q 14 Aug 2024 30 Jun 2024 001-14785
8-K Open Document | Data Open Filing 8-K 14 Aug 2024 14 Aug 2024 001-14785
SC 13G/A Open Document Open Filing AMENDMENT NO. 1 TO SCHEDULE 13G 09 Aug 2024 005-45371
8-K Open Document | Data Open Filing FORM 8-K 08 Aug 2024 07 Aug 2024 001-14785
4 Open Document Open Filing 05 Aug 2024 22 Jul 2024
8-K Open Document Open Filing RAVI KHANNA EMPLOYMENT AGREEMENT 26 Jul 2024 22 Jul 2024 001-14785
144 Open Document Open Filing 03 Jul 2024 001-14785
4 Open Document Open Filing 02 Jul 2024 30 Jun 2024
4 Open Document Open Filing 02 Jul 2024 30 Jun 2024
4 Open Document Open Filing 02 Jul 2024 30 Jun 2024
4 Open Document Open Filing 02 Jul 2024 30 Jun 2024
8-K Open Document Open Filing FORM 8-K GSE SYSTEMS 2024 ANNUAL MEETING RESULTS 02 Jul 2024 01 Jul 2024 001-14785
DEFA14A Open Document Open Filing GSE SYSTEMS, INC 2024 PROXY CARD 29 May 2024 001-14785
DEF 14A Open Document Open Filing GSE SYSTEMS, INC. 2024 DEFINITIVE PROXY 24 May 2024 01 Jul 2024 001-14785
10-Q Open Document | Data Open Filing 10-Q 15 May 2024 31 Mar 2024 001-14785
8-K Open Document | Data Open Filing 8-K 15 May 2024 15 May 2024 001-14785
8-K Open Document Open Filing GSE SYSTEMS, INC FORM 8-K APPOINTMENT OF DAMIAN DELONGCHAMP AS CHIEF OPERATING O 14 May 2024 08 May 2024 001-14785
PRE 14A Open Document Open Filing GSE PRELIMINARY PROXY STATEMENT 13 May 2024 13 May 2024 001-14785
SC 13D Open Document Open Filing LOUDERMILK SCHEDULE 13D 06 May 2024 005-45371
8-K Open Document Open Filing GSE SYSTEMS, INC. FORM 8-K 30 Apr 2024 24 Apr 2024 001-14785
10-K/A Open Document Open Filing GSE SYSTEMS FORM 10-K/A 04-29-2024 29 Apr 2024 29 Apr 2024 001-14785
SC 13G Open Document Open Filing SCHEDULE 13G 05 Apr 2024 005-45371
10-K/A Open Document | Data Open Filing 10-K/A 02 Apr 2024 31 Dec 2023 001-14785
4 Open Document Open Filing 02 Apr 2024 31 Mar 2024
4 Open Document Open Filing 02 Apr 2024 31 Mar 2024
4 Open Document Open Filing 02 Apr 2024 31 Mar 2024
4 Open Document Open Filing 02 Apr 2024 31 Mar 2024
4 Open Document Open Filing 02 Apr 2024 31 Mar 2024
10-K Open Document | Data Open Filing 10-K 02 Apr 2024 31 Dec 2023 001-14785
NT 10-K Open Document Open Filing NT 10-K 02 Apr 2024 31 Dec 2023 001-14785
8-K Open Document | Data Open Filing 8-K 01 Apr 2024 01 Apr 2024 001-14785
SC 13G/A Open Document Open Filing 14 Feb 2024 005-45371
SC 13G/A Open Document Open Filing 13 Feb 2024 005-45371
8-K Open Document Open Filing GSE SYSTEMS, INC. - FORM 8-K LIND NOTE AMENDMENTS FEB. 2024 13 Feb 2024 12 Feb 2024 001-14785
SC 13G/A Open Document Open Filing SC 13G/A 09 Feb 2024 005-45371
4 Open Document Open Filing 03 Jan 2024 31 Dec 2023
4 Open Document Open Filing 03 Jan 2024 31 Dec 2023
4 Open Document Open Filing 03 Jan 2024 31 Dec 2023
4 Open Document Open Filing 03 Jan 2024 31 Dec 2023
4 Open Document Open Filing 03 Jan 2024 31 Dec 2023
EFFECT Open Document Open Filing 29 Dec 2023 333-276128
CORRESP Open Document Open Filing 28 Dec 2023
UPLOAD Open Document Open Filing 21 Dec 2023
S-3/A Open Document Open Filing S-3/A 20 Dec 2023 333-276128
S-3 Open Document Open Filing S-3 19 Dec 2023 333-276128
8-K Open Document Open Filing GSE SYSTEMS, INC. UNREGISTERED SALE OF SECURITIES 18 Dec 2023 18 Dec 2023 001-14785
SC 13G Open Document Open Filing 12 Dec 2023 005-45371
8-K Open Document Open Filing GSE FORM 8-K ITEM 3.02. UNREGISTERED SALE OF SECURITIES. 06 Dec 2023 06 Dec 2023 001-14785
RW Open Document Open Filing GSE SYSTEMS, INC. - REQUEST FOR WITHDRAWAL - FORM RW 01 Dec 2023 333-275791
S-3 Open Document Open Filing POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-3 REGISTRATION STATEMENT NO. 333-264114 30 Nov 2023 333-275791
4 Open Document Open Filing 27 Nov 2023 20 Nov 2023
8-K Open Document Open Filing NASDAQ STAFF DETERMINATION - REQUIREMENT CURED 17 Nov 2023 17 Nov 2023 001-14785
10-Q Open Document | Data Open Filing 10-Q 14 Nov 2023 30 Sep 2023 001-14785
8-K Open Document | Data Open Filing 8-K 14 Nov 2023 14 Nov 2023 001-14785
8-K Open Document Open Filing NASDAQ DELISTING NOTICE AND APPEAL 03 Nov 2023 03 Nov 2023 001-14785
8-K Open Document Open Filing REVERSE STOCK SPLIT 26 Oct 2023 25 Oct 2023 001-14785
8-K Open Document Open Filing 06 Oct 2023 06 Oct 2023 001-14785
4 Open Document Open Filing 03 Oct 2023 30 Sep 2023
4 Open Document Open Filing 03 Oct 2023 30 Sep 2023
4 Open Document Open Filing 03 Oct 2023 30 Sep 2023
4 Open Document Open Filing 03 Oct 2023 30 Sep 2023
4 Open Document Open Filing 03 Oct 2023 30 Sep 2023
10-Q Open Document | Data Open Filing 10-Q 16 Aug 2023 30 Jun 2023 001-14785
NT 10-Q Open Document Open Filing NT 10-Q 15 Aug 2023 30 Jun 2023 001-14785
8-K Open Document | Data Open Filing 8-K 14 Aug 2023 14 Aug 2023 001-14785
8-K Open Document Open Filing GSE LOUDERMILK AGREEMENT 28 Jul 2023 28 Jul 2023 001-14785
4 Open Document Open Filing 05 Jul 2023 30 Jun 2023
4 Open Document Open Filing 05 Jul 2023 30 Jun 2023
4 Open Document Open Filing 05 Jul 2023 30 Jun 2023
4 Open Document Open Filing 05 Jul 2023 30 Jun 2023
8-K Open Document Open Filing FORM 8-K GSE LIND 2003 TRANSACTION 26 Jun 2023 26 Jun 2023 001-14785
4 Open Document Open Filing 14 Jun 2023 12 Jun 2023
4 Open Document Open Filing 14 Jun 2023 12 Jun 2023
4 Open Document Open Filing 14 Jun 2023 12 Jun 2023
8-K Open Document Open Filing GSE SYSTEMS, INC. 2023 ANNUAL MEETING RESULTS 13 Jun 2023 12 Jun 2023 001-14785
10-Q Open Document | Data Open Filing 10-Q 15 May 2023 31 Mar 2023 001-14785
8-K Open Document | Data Open Filing 8-K 15 May 2023 15 May 2023 001-14785
8-K Open Document Open Filing GSE SYSTEMS, INC FORM 8-K DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS 08 May 2023 07 May 2023 001-14785
8-K Open Document Open Filing GSE SYSTEMS FORM 8-K NASDAQ EXTENSION GRANT 04 May 2023 04 May 2023 001-14785
DEFA14A Open Document Open Filing GSE SYSTEMS, INC. 2023 ANNUAL MEETING NOTICE 02 May 2023 001-14785
DEF 14A Open Document Open Filing GSE DEFINITIVE PROXY STATEMENT 02 May 2023 02 May 2023 001-14785
8-K Open Document Open Filing GVP FORM 8-K (NEW ORDERS) 25 Apr 2023 25 Apr 2023 001-14785
PRE 14A Open Document Open Filing GSE PRELIMINARY PROXY STATEMENT 2023 17 Apr 2023 17 Apr 2023 001-14785
10-K Open Document | Data Open Filing 10-K 17 Apr 2023 31 Dec 2022 001-14785
4 Open Document Open Filing 07 Apr 2023 05 Apr 2023
4 Open Document Open Filing 07 Apr 2023 05 Apr 2023
4 Open Document Open Filing 07 Apr 2023 05 Apr 2023
4 Open Document Open Filing 07 Apr 2023 05 Apr 2023
4 Open Document Open Filing 07 Apr 2023 05 Apr 2023
4 Open Document Open Filing 07 Apr 2023 05 Apr 2023
4 Open Document Open Filing 04 Apr 2023 31 Mar 2023
4 Open Document Open Filing 04 Apr 2023 31 Mar 2023
4 Open Document Open Filing 04 Apr 2023 31 Mar 2023
4 Open Document Open Filing 04 Apr 2023 31 Mar 2023
4 Open Document Open Filing 04 Apr 2023 31 Mar 2023
4 Open Document Open Filing 04 Apr 2023 31 Mar 2023
NT 10-K Open Document Open Filing NT 10-K 03 Apr 2023 31 Dec 2022 001-14785
8-K Open Document | Data Open Filing 8-K 30 Mar 2023 30 Mar 2023 001-14785
4 Open Document Open Filing FORM 4 SUBMISSION 21 Mar 2023 17 Mar 2023
SC 13G/A Open Document Open Filing 14 Feb 2023 005-45371
8-K Open Document Open Filing FORM 8-K RENEWED 5-YEAR CONTRACT 18 Jan 2023 18 Jan 2023 001-14785
4 Open Document Open Filing FORM 4 04 Jan 2023 31 Dec 2022
4 Open Document Open Filing FORM 4 04 Jan 2023 31 Dec 2022
4 Open Document Open Filing FORM 4 04 Jan 2023 31 Dec 2022
4 Open Document Open Filing FORM 4 04 Jan 2023 31 Dec 2022
4 Open Document Open Filing FORM 4 04 Jan 2023 31 Dec 2022
4 Open Document Open Filing FORM 4 04 Jan 2023 31 Dec 2022
4 Open Document Open Filing FORM 4 15 Dec 2022 14 Dec 2022
4 Open Document Open Filing FORM 4 28 Nov 2022 23 Nov 2022
4 Open Document Open Filing FORM 4 22 Nov 2022 18 Nov 2022
10-Q Open Document | Data Open Filing 10-Q 14 Nov 2022 30 Sep 2022 001-14785
8-K Open Document | Data Open Filing 8-K 14 Nov 2022 14 Nov 2022 001-14785
8-K Open Document Open Filing FORM 8-K GSE SYSTEMS, INC DELISTING NOTICE 08 Nov 2022 08 Nov 2022 001-14785
4 Open Document Open Filing FORM 4 04 Oct 2022 30 Sep 2022
4 Open Document Open Filing FORM 4 04 Oct 2022 30 Sep 2022
4 Open Document Open Filing FORM 4 04 Oct 2022 30 Sep 2022
4 Open Document Open Filing FORM 4 04 Oct 2022 30 Sep 2022
4 Open Document Open Filing FORM 4 04 Oct 2022 30 Sep 2022
4 Open Document Open Filing FORM 4 04 Oct 2022 30 Sep 2022
4 Open Document Open Filing FORM 4 14 Sep 2022 14 Sep 2022
8-K Open Document Open Filing GSE INVESTOR PRESENTATION 09-2022 12 Sep 2022 12 Sep 2022 001-14785
10-Q Open Document | Data Open Filing 10-Q 15 Aug 2022 30 Jun 2022 001-14785
8-K Open Document | Data Open Filing 8-K 15 Aug 2022 15 Aug 2022 001-14785
4 Open Document Open Filing FORM 4 05 Jul 2022 30 Jun 2022
4 Open Document Open Filing FORM 4 01 Jul 2022 30 Jun 2022
4 Open Document Open Filing FORM 4 01 Jul 2022 30 Jun 2022
4 Open Document Open Filing FORM 4 01 Jul 2022 30 Jun 2022
4 Open Document Open Filing FORM 4 01 Jul 2022 30 Jun 2022
4 Open Document Open Filing FORM 4 01 Jul 2022 30 Jun 2022
4 Open Document Open Filing FORM 4 01 Jul 2022 30 Jun 2022
8-K Open Document Open Filing GSE SYSTEMS INC - FORM 8-K FOR 2022 ANNUAL MEETING 17 Jun 2022 17 Jun 2022 001-14785
4 Open Document Open Filing FORM 4 16 Jun 2022 14 Jun 2022
4 Open Document Open Filing FORM 4 16 Jun 2022 14 Jun 2022
4 Open Document Open Filing FORM 4 16 Jun 2022 14 Jun 2022
4 Open Document Open Filing FORM 4 16 Jun 2022 14 Jun 2022
4 Open Document Open Filing FORM 4 16 Jun 2022 14 Jun 2022
DEFA14A Open Document Open Filing DEFA 14A PROXY SUPPLEMENT 01 Jun 2022 001-14785
8-K Open Document Open Filing FORM 8-K DHG MERGER 01 Jun 2022 01 Jun 2022 001-14785
4 Open Document Open Filing FORM 4 26 May 2022 24 May 2022
EFFECT Open Document Open Filing 25 May 2022 333-264114
CORRESP Open Document Open Filing 24 May 2022
CORRESP Open Document Open Filing 24 May 2022
S-3/A Open Document Open Filing GSE FORM S-3/A 24 May 2022 333-264114
10-Q Open Document | Data Open Filing 10-Q 16 May 2022 31 Mar 2022 001-14785
8-K Open Document | Data Open Filing 8-K 16 May 2022 16 May 2022 001-14785
DEFA14A Open Document Open Filing GSE SYSTEMS PROXY NOTICE 02 May 2022 001-14785
DEF 14A Open Document Open Filing GSE DEFINITIVE PROXY STATEMENT 2022 02 May 2022 02 May 2022 001-14785
UPLOAD Open Document Open Filing 11 Apr 2022
4 Open Document Open Filing FORM 4 06 Apr 2022 05 Apr 2022
4 Open Document Open Filing FORM 4 06 Apr 2022 05 Apr 2022
4 Open Document Open Filing FORM 4 06 Apr 2022 05 Apr 2022
4 Open Document Open Filing FORM 4 06 Apr 2022 05 Apr 2022
4 Open Document Open Filing FORM 4 06 Apr 2022 05 Apr 2022
4 Open Document Open Filing FORM 4 06 Apr 2022 05 Apr 2022
S-3 Open Document Open Filing GSE SYSTEMS INC - FORM S-3 04 Apr 2022 333-264114
8-K Open Document Open Filing FORM 8-K INVESTOR PRESENTATION 04 Apr 2022 04 Apr 2022 001-14785
4 Open Document Open Filing FORM 4 01 Apr 2022 31 Mar 2022
4 Open Document Open Filing FORM 4 01 Apr 2022 31 Mar 2022
4 Open Document Open Filing FORM 4 01 Apr 2022 31 Mar 2022
4 Open Document Open Filing FORM 4 01 Apr 2022 31 Mar 2022
4 Open Document Open Filing FORM 4 01 Apr 2022 31 Mar 2022
4 Open Document Open Filing FORM 4 01 Apr 2022 31 Mar 2022
4 Open Document Open Filing FORM 4 01 Apr 2022 31 Mar 2022
8-K/A Open Document | Data Open Filing 8-K/A 01 Apr 2022 31 Mar 2022 001-14785
10-K Open Document | Data Open Filing 10-K 31 Mar 2022 31 Dec 2021 001-14785
8-K Open Document | Data Open Filing 8-K 31 Mar 2022 31 Mar 2022 001-14785
4 Open Document Open Filing FORM 4 22 Mar 2022 18 Mar 2022
4 Open Document Open Filing FORM 4 22 Mar 2022 18 Mar 2022
4 Open Document Open Filing FORM 4 16 Mar 2022 15 Mar 2022
3 Open Document Open Filing FORM 3 11 Mar 2022 28 Feb 2022
8-K Open Document Open Filing FORM 8-K 01 Mar 2022 28 Feb 2022 001-14785
8-K Open Document Open Filing FORM 8-K 28 Feb 2022 28 Feb 2022 001-14785
SC 13G/A Open Document Open Filing 14 Feb 2022 005-45371
SC 13G/A Open Document Open Filing FORM SC 13G/A 09 Feb 2022 005-45371
4 Open Document Open Filing FORM 4 04 Jan 2022 31 Dec 2021
4 Open Document Open Filing FORM 4 04 Jan 2022 31 Dec 2021
4 Open Document Open Filing FORM 4 04 Jan 2022 31 Dec 2021
4 Open Document Open Filing FORM 4 04 Jan 2022 31 Dec 2021
4 Open Document Open Filing FORM 4 04 Jan 2022 31 Dec 2021
4 Open Document Open Filing FORM 4 04 Jan 2022 31 Dec 2021
4 Open Document Open Filing FORM 4 04 Jan 2022 31 Dec 2021
4 Open Document Open Filing FORM 4 22 Nov 2021 18 Nov 2021
4 Open Document Open Filing FORM 4 18 Nov 2021 16 Nov 2021
10-Q Open Document | Data Open Filing 10-Q 15 Nov 2021 30 Sep 2021 001-14785
8-K Open Document | Data Open Filing 8-K 15 Nov 2021 15 Nov 2021 001-14785
4 Open Document Open Filing FORM 4 04 Oct 2021 30 Sep 2021
4 Open Document Open Filing FORM 4 01 Oct 2021 30 Sep 2021
4 Open Document Open Filing FORM 4 01 Oct 2021 30 Sep 2021
4 Open Document Open Filing FORM 4 01 Oct 2021 30 Sep 2021
4 Open Document Open Filing FORM 4 01 Oct 2021 30 Sep 2021
8-K Open Document Open Filing FORM 8-K GSE SYSTEMS IR PRESENTATION 9-20-2021 20 Sep 2021 20 Sep 2021 001-14785
4 Open Document Open Filing FORM 4 13 Sep 2021 09 Sep 2021
10-Q Open Document | Data Open Filing 10-Q 16 Aug 2021 30 Jun 2021 001-14785
8-K Open Document Open Filing 8-K 16 Aug 2021 16 Aug 2021 001-14785
8-K Open Document Open Filing 8-K 06 Aug 2021 04 Aug 2021 001-14785
4 Open Document Open Filing FORM 4 02 Jul 2021 30 Jun 2021
4 Open Document Open Filing FORM 4 02 Jul 2021 30 Jun 2021
4 Open Document Open Filing FORM 4 02 Jul 2021 30 Jun 2021
4 Open Document Open Filing FORM 4 02 Jul 2021 30 Jun 2021
4 Open Document Open Filing FORM 4 02 Jul 2021 30 Jun 2021
4 Open Document Open Filing FORM 4 02 Jul 2021 30 Jun 2021
4 Open Document Open Filing FORM 4 25 Jun 2021 23 Jun 2021
4 Open Document Open Filing FORM 4 25 Jun 2021 23 Jun 2021
4 Open Document Open Filing FORM 4 25 Jun 2021 23 Jun 2021
4 Open Document Open Filing FORM 4 25 Jun 2021 23 Jun 2021
4 Open Document Open Filing FORM 4 25 Jun 2021 23 Jun 2021
4 Open Document Open Filing FORM 4 25 Jun 2021 23 Jun 2021
4 Open Document Open Filing FORM 4 25 Jun 2021 23 Jun 2021
4 Open Document Open Filing FORM 4 22 Jun 2021 18 Jun 2021
4 Open Document Open Filing FORM 4 22 Jun 2021 18 Jun 2021
4 Open Document Open Filing FORM 4 22 Jun 2021 18 Jun 2021
4 Open Document Open Filing FORM 4 22 Jun 2021 18 Jun 2021
4 Open Document Open Filing FORM 4 22 Jun 2021 18 Jun 2021
4 Open Document Open Filing FORM 4 16 Jun 2021 14 Jun 2021
4 Open Document Open Filing FORM 4 16 Jun 2021 14 Jun 2021
4 Open Document Open Filing FORM 4 16 Jun 2021 14 Jun 2021
8-K Open Document Open Filing FORM 8-K GSE SYSTEMS, INC 2021 ANNUAL MEETING RESULTS 15 Jun 2021 15 Jun 2021 001-14785
8-K Open Document Open Filing GSE SYSTEMS INVESTOR PRESENTATION 05-19-2021 19 May 2021 19 May 2021 001-14785
10-Q Open Document | Data Open Filing 10-Q 17 May 2021 31 Mar 2021 001-14785
8-K Open Document Open Filing 8-K 17 May 2021 17 May 2021 001-14785
4 Open Document Open Filing FORM 4 11 May 2021 11 May 2021
DEFA14A Open Document Open Filing GSE SYSTEMS FORM DEFA14A - PROXY NOTICE 30 Apr 2021 001-14785
DEF 14A Open Document Open Filing GSE DEFINITIVE PROXY STATEMENT 043021 30 Apr 2021 30 Apr 2021 001-14785
8-K Open Document Open Filing FORM 8-K GSE SYSTEMS 50TH ANNIVERSARY 14 Apr 2021 14 Apr 2021 001-14785
10-K Open Document | Data Open Filing 10-K 13 Apr 2021 31 Dec 2020 001-14785
8-K Open Document Open Filing CITIZEN'S BANK NINTH AMENDMENT AND REAFFIRMATION AGREEMENT 02 Apr 2021 02 Apr 2021 001-14785
8-K Open Document Open Filing 8-K 31 Mar 2021 31 Dec 2020 001-14785
NT 10-K Open Document Open Filing NT 10-K FY20 12B-25 NOTIFICATION OF LATE FILING 31 Mar 2021 31 Mar 2021 001-14785
3 Open Document Open Filing FORM 3 15 Mar 2021 12 Mar 2021
3 Open Document Open Filing FORM 3 15 Mar 2021 12 Mar 2021
8-K Open Document Open Filing J. BARNIE BEASLEY DEPARTURE 26 Feb 2021 26 Feb 2021 001-14785
8-K Open Document Open Filing FORM 8-K GVP INVESTOR RELATIONS PRESENTATION 24 Feb 2021 23 Feb 2021 001-14785
SC 13G/A Open Document Open Filing 16 Feb 2021 005-45371
SC 13G/A Open Document Open Filing FORM SC 13G/A 09 Feb 2021 005-45371
SC 13G/A Open Document Open Filing 05 Feb 2021 005-45371
4 Open Document Open Filing FORM 4 04 Jan 2021 31 Dec 2020
4 Open Document Open Filing FORM 4 04 Jan 2021 31 Dec 2020
4 Open Document Open Filing FORM 4 10 Dec 2020 09 Dec 2020
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q Q2 2020 16 Nov 2020 30 Sep 2020 001-14785
8-K Open Document Open Filing 8-K 16 Nov 2020 30 Sep 2020 001-14785
4 Open Document Open Filing FORM 4 02 Oct 2020 30 Sep 2020
4 Open Document Open Filing FORM 4 02 Oct 2020 30 Sep 2020
8-K Open Document Open Filing FORM 8-K DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS 25 Sep 2020 21 Sep 2020 001-14785
4 Open Document Open Filing FORM 4 11 Sep 2020 10 Sep 2020
4 Open Document Open Filing FORM 4 11 Sep 2020 11 Sep 2020
4 Open Document Open Filing FORM 4 10 Sep 2020 09 Sep 2020
8-K Open Document Open Filing FORM 8-K - EIGHTH AMENDMENT CITIZENS AGREEMENT 03 Sep 2020 28 Aug 2020 001-14785
4 Open Document Open Filing FORM 4 02 Sep 2020 31 Aug 2020
4 Open Document Open Filing FORM 4 01 Sep 2020 31 Aug 2020
4 Open Document Open Filing FORM 4 01 Sep 2020 31 Aug 2020
4 Open Document Open Filing FORM 4 01 Sep 2020 31 Aug 2020
4 Open Document Open Filing FORM 4 01 Sep 2020 31 Aug 2020
3 Open Document Open Filing FORM 3 31 Aug 2020 31 Aug 2020
8-K Open Document Open Filing FORM 8-K GSE SYSTEMS 2020 ANNUAL SHAREHOLDERS MEETING RESULTS 31 Aug 2020 31 Aug 2020 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q Q2 2020 20 Aug 2020 30 Jun 2020 001-14785
8-K Open Document Open Filing 8-K 19 Aug 2020 30 Jun 2020 001-14785
NT 10-Q Open Document Open Filing FORM 12B-25 NOTIFICATION OF LATE FILING 2Q20 14 Aug 2020 14 Aug 2020 001-14785
DEF 14A Open Document Open Filing GSE DEFINITIVE PROXY STATEMENT 07-24-2020 24 Jul 2020 24 Jul 2020 001-14785
8-K Open Document Open Filing GSE SYSTEMS FORM 8-K 07-24-20 CHANGES IN REGISTRANT'S CERTIFYING ACCOUNTANT 24 Jul 2020 23 Jul 2020 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q Q1 2020 23 Jul 2020 31 Mar 2020 001-14785
8-K Open Document Open Filing 8-K 22 Jul 2020 31 Mar 2020 001-14785
8-K Open Document Open Filing FORM 8-K - GSE SYSTEMS INC 07-10-20 10 Jul 2020 08 Jul 2020 001-14785
4 Open Document Open Filing FORM 4 07 Jul 2020 30 Jun 2020
4 Open Document Open Filing FORM 4 07 Jul 2020 30 Jun 2020
NT 10-Q Open Document Open Filing FORM 12B-25 FORM 10-Q PERIOD ENDED MARCH 31, 2020 29 Jun 2020 29 Jun 2020 001-14785
8-K/A Open Document Open Filing 8-K 16 Jun 2020 31 Dec 2019 001-14785
8-K Open Document Open Filing FORM 8-K NASDAQ MATTER CLOSED 15 Jun 2020 12 Jun 2020 001-14785
10-K Open Document | Data Open Filing GSE SYSTEMS, INC. - 2018 - 10-K 11 Jun 2020 31 Dec 2019 001-14785
8-K Open Document Open Filing FORM 8-K 05 Jun 2020 01 Jun 2020 001-14785
8-K Open Document Open Filing GSE SYSTEMS, INC FORM 8-K ITEM 8.01 OTHER EVENTS - FORM 10-K FILING 29 May 2020 29 May 2020 001-14785
8-K Open Document Open Filing FORM 8-K GSE SYSTEMS DEPARTURE OF DIRECTORS & OTHER EVENTS 22 May 2020 19 May 2020 001-14785
8-K Open Document Open Filing GSE SYSTEMS FORM 8-K 10-Q EXTENSION RE COVID AND FULLER DEPARTURE 15 May 2020 12 May 2020 001-14785
NT 10-K Open Document Open Filing NT 10-K FY19 12B-25 NOTIFICATION OF LATE FILING 14 May 2020 14 May 2020 001-14785
8-K Open Document Open Filing FORM 8-K GSE SYSTEMS INC PPP LOAN 04-30-2020 30 Apr 2020 24 Apr 2020 001-14785
8-K Open Document Open Filing FORM 8-K - GSE SYSTEMS INC. FORM DEF14A EXTENSION 29 Apr 2020 29 Apr 2020 001-14785
8-K Open Document Open Filing FORM 8-K CITIZENS BANK SEVENTH AMENDMENT AND REAFFIRMATION AGREEMENT 17 Apr 2020 17 Apr 2020 001-14785
8-K/A Open Document Open Filing FORM 8-K/A GSE SYSTEMS INC 10-K FILING DATE 15 Apr 2020 30 Mar 2020 001-14785
8-K Open Document Open Filing 8-K 14 Apr 2020 31 Dec 2019 001-14785
4 Open Document Open Filing FORM 4 02 Apr 2020 31 Mar 2020
4 Open Document Open Filing FORM 4 02 Apr 2020 31 Mar 2020
8-K Open Document Open Filing FORM 8-K GSE SYSTEMS 10-K EXTENSION RE COVID-19 30 Mar 2020 30 Mar 2020 001-14785
SC 13G/A Open Document Open Filing SCHEDULE 13G HOLDINGS REPORT AMENDMENT 14 Feb 2020 005-45371
SC 13G/A Open Document Open Filing 14 Feb 2020 005-45371
SC 13G/A Open Document Open Filing SC 13G/A 13 Feb 2020 005-45371
SC 13G Open Document Open Filing FORM SC 13G 11 Feb 2020 005-45371
8-K Open Document Open Filing CITIZENS BANK AGREEMENT 08 Jan 2020 07 Jan 2020 001-14785
8-K Open Document Open Filing FORM 8-K SETTLEMENT AND RELEASE AGREEMENT 06 Jan 2020 06 Jan 2020 001-14785
4 Open Document Open Filing FORM 4 03 Jan 2020 31 Dec 2019
4 Open Document Open Filing FORM 4 03 Jan 2020 31 Dec 2019
4 Open Document Open Filing FORM 4 03 Jan 2020 31 Dec 2019
8-K Open Document Open Filing FORM 8-K O'CONNOR ELECTED TO GSE BOARD 20 Dec 2019 17 Dec 2019 001-14785
4 Open Document Open Filing FORM 4 19 Dec 2019 17 Dec 2019
3 Open Document Open Filing FORM 3 19 Dec 2019 17 Dec 2019
3/A Open Document Open Filing AMENDED INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES 11 Dec 2019 19 Nov 2019
10-Q/A Open Document Open Filing 10-Q/A 10 Dec 2019 30 Sep 2019 001-14785
3 Open Document Open Filing INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES 29 Nov 2019 19 Nov 2019
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q Q3 2019 19 Nov 2019 30 Sep 2019 001-14785
8-K Open Document Open Filing 8-K 19 Nov 2019 19 Nov 2019 001-14785
NT 10-Q Open Document Open Filing NT 10-Q 14 Nov 2019 13 Nov 2019 001-14785
4 Open Document Open Filing FORM 4 01 Oct 2019 30 Sep 2019
4 Open Document Open Filing FORM 4 01 Oct 2019 30 Sep 2019
4 Open Document Open Filing FORM 4 01 Oct 2019 30 Sep 2019
4 Open Document Open Filing FORM 4 01 Oct 2019 30 Sep 2019
8-K Open Document Open Filing GVP INVESTOR PRESENTATION SEPTEMBER 24, 2019 24 Sep 2019 24 Sep 2019 001-14785
RW Open Document Open Filing GSE SYSTEMS-WITHDRAWAL LETTER FOR S-3 19 Sep 2019 333-233286
8-K Open Document Open Filing DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS, REGULATION FD DISCLOSURE 19 Sep 2019 18 Sep 2019 001-14785
S-3 Open Document Open Filing S-3 15 Aug 2019 333-233286
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q Q2 2019 14 Aug 2019 30 Jun 2019 001-14785
8-K Open Document Open Filing FORM 8-K - Q2 2019 - EARNINGS RELEASE 14 Aug 2019 30 Jun 2019 001-14785
4 Open Document Open Filing FORM 4 02 Jul 2019 30 Jun 2019
4 Open Document Open Filing FORM 4 02 Jul 2019 30 Jun 2019
4 Open Document Open Filing FORM 4 02 Jul 2019 30 Jun 2019
4 Open Document Open Filing FORM 4 02 Jul 2019 30 Jun 2019
8-K Open Document Open Filing CITIZEN'S BANK AMENDMENT AND REAFFIRMATION AGREEMENT 01 Jul 2019 28 Jun 2019 001-14785
4 Open Document Open Filing FORM 4 12 Jun 2019 11 Jun 2019
4 Open Document Open Filing FORM 4 12 Jun 2019 11 Jun 2019
4 Open Document Open Filing FORM 4 12 Jun 2019 11 Jun 2019
4 Open Document Open Filing FORM 4 12 Jun 2019 11 Jun 2019
8-K Open Document Open Filing FORM 8-K RESULTS GSE SYSTEMS 2019 ANNUAL SHAREHOLDERS MEETING 11 Jun 2019 11 Jun 2019 001-14785
4 Open Document Open Filing FORM 4 07 Jun 2019 05 Jun 2019
DEFA14A Open Document Open Filing GSE DEFINITIVE ADDITIONAL MATERIALS FOR PROXY STATEMENT 2019-05-31 31 May 2019 001-14785
4 Open Document Open Filing FORM 4 22 May 2019 20 May 2019
4 Open Document Open Filing FORM 4 17 May 2019 15 May 2019
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q Q1 2019 15 May 2019 31 Mar 2019 001-14785
8-K Open Document Open Filing FORM 8-K - Q1 2019 EARNINGS RELEASE 15 May 2019 31 Mar 2019 001-14785
4 Open Document Open Filing FORM 4 10 May 2019 08 May 2019
SC 13G/A Open Document Open Filing SC 13G/A 08 May 2019 005-45371
8-K/A Open Document Open Filing FORM 8-K/A - AMENDMENTS TO 8-K FILED ON FEBRUARY 19, 2019 01 May 2019 19 Feb 2019 001-14785
DEFA14A Open Document Open Filing GSE SYSTEMS 2019 PROXY NOTICE 30 Apr 2019 001-14785
DEF 14A Open Document Open Filing GSE SYSTEMS, INC. 2019 PROXY STATEMENT 30 Apr 2019 30 Apr 2019 001-14785
4 Open Document Open Filing FORM 4 02 Apr 2019 31 Mar 2019
4 Open Document Open Filing FORM 4 02 Apr 2019 31 Mar 2019
4 Open Document Open Filing FORM 4 02 Apr 2019 31 Mar 2019
4 Open Document Open Filing FORM 4 02 Apr 2019 31 Mar 2019
4 Open Document Open Filing FORM 4 02 Apr 2019 31 Mar 2019
4 Open Document Open Filing FORM 4 02 Apr 2019 31 Mar 2019
4 Open Document Open Filing FORM 4 02 Apr 2019 31 Mar 2019
10-K Open Document | Data Open Filing GSE SYSTEMS, INC. - 2018 - 10-K 28 Mar 2019 31 Dec 2018 001-14785
4 Open Document Open Filing FORM 4 20 Mar 2019 15 Mar 2019
8-K Open Document Open Filing GVP - CORPORATE PRESENTATION - MARCH 2019 18 Mar 2019 18 Mar 2019 001-14785
8-K Open Document Open Filing FORM 8-K: EARNINGS RELEASE - FY 2018 14 Mar 2019 31 Dec 2018 001-14785
8-K Open Document Open Filing GSE SYSTEMS ACQUIRES DP ENGINEERING 19 Feb 2019 19 Feb 2019 001-14785
SC 13G/A Open Document Open Filing SC 13G/A 14 Feb 2019 005-45371
SC 13G/A Open Document Open Filing SC 13G/A 14 Feb 2019 005-45371
SC 13G/A Open Document Open Filing SCHEDULE 13G HOLDINGS REPORT AMENDMENT 14 Feb 2019 005-45371
4 Open Document Open Filing FORM 4 08 Feb 2019 07 Feb 2019
4 Open Document Open Filing FORM 4 08 Feb 2019 07 Feb 2019
4 Open Document Open Filing FORM 4 08 Feb 2019 07 Feb 2019
4 Open Document Open Filing FORM 4 08 Feb 2019 07 Feb 2019
4 Open Document Open Filing FORM 4 11 Jan 2019 11 Jan 2019
4 Open Document Open Filing FORM 4 11 Jan 2019 11 Jan 2019
4 Open Document Open Filing FORM 4 11 Jan 2019 11 Jan 2019
8-K Open Document Open Filing AMENDMENTS TO CERTAIN AGREEMENTS WITH EXECUTIVE OFFICERS 11 Jan 2019 11 Jan 2019 001-14785
4 Open Document Open Filing FORM 4 03 Jan 2019 31 Dec 2018
4 Open Document Open Filing FORM 4 03 Jan 2019 01 Jan 2019
4 Open Document Open Filing FORM 4 03 Jan 2019 31 Dec 2018
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q Q3 2018 14 Nov 2018 30 Sep 2018 001-14785
8-K Open Document Open Filing FORM 8-K - Q3 2018 - EARNINGS RELEASE 14 Nov 2018 30 Sep 2018 001-14785
4 Open Document Open Filing FORM 4 02 Oct 2018 30 Sep 2018
4 Open Document Open Filing FORM 4 02 Oct 2018 30 Sep 2018
4 Open Document Open Filing FORM 4 02 Oct 2018 30 Sep 2018
4 Open Document Open Filing FORM 4 02 Oct 2018 30 Sep 2018
4 Open Document Open Filing FORM 4 02 Oct 2018 30 Sep 2018
4 Open Document Open Filing FORM 4 02 Oct 2018 30 Sep 2018
4 Open Document Open Filing FORM 4 14 Sep 2018 13 Sep 2018
8-K Open Document Open Filing GVP - CORPORATE PRESENTATION - AUGUST 2018 28 Aug 2018 27 Aug 2018 001-14785
8-K Open Document Open Filing FORM 8-K GSE SYSTEMS 2Q18 EARNINGS CALL TRANSCRIPT 17 Aug 2018 17 Aug 2018 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q Q2 2018 14 Aug 2018 30 Jun 2018 001-14785
8-K Open Document Open Filing FORM 8-K - Q2 2018 - EARNINGS RELEASE 14 Aug 2018 30 Jun 2018 001-14785
8-K/A Open Document Open Filing FORM 8-K/A - AMENDMENTS TO 8-K FILED ON MAY 14, 2018 24 Jul 2018 11 May 2018 001-14785
4 Open Document Open Filing FORM 4 02 Jul 2018 30 Jun 2018
4 Open Document Open Filing FORM 4 02 Jul 2018 30 Jun 2018
4 Open Document Open Filing FORM 4 02 Jul 2018 30 Jun 2018
4 Open Document Open Filing FORM 4 02 Jul 2018 30 Jun 2018
4 Open Document Open Filing FORM 4 02 Jul 2018 30 Jun 2018
4 Open Document Open Filing FORM 4 02 Jul 2018 30 Jun 2018
8-K Open Document Open Filing GSE SYSTEMS INC 2018 ANNUAL MEETING RESULTS, AMENDMENTS TO ARTICLES OF INC, IR P 15 Jun 2018 12 Jun 2018 001-14785
4 Open Document Open Filing FORM 4 13 Jun 2018 12 Jun 2018
3 Open Document Open Filing FORM 3 13 Jun 2018 12 Jun 2018
4 Open Document Open Filing FORM 4 13 Jun 2018 12 Jun 2018
4 Open Document Open Filing FORM 4 13 Jun 2018 12 Jun 2018
4 Open Document Open Filing FORM 4 13 Jun 2018 12 Jun 2018
DEFA14A Open Document Open Filing 2018 PROXY CARD 11 Jun 2018 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q Q1 2018 15 May 2018 31 Mar 2018 001-14785
8-K Open Document Open Filing FORM 8-K - Q1 2018 EARNINGS RELEASE 15 May 2018 31 Mar 2018 001-14785
8-K Open Document Open Filing GSE SYSTEMS, INC. TRUE NORTH AND CREDIT AGREEMENTS 14 May 2018 14 May 2018 001-14785
DEFA14A Open Document Open Filing GSE SYSTEMS 2018 PROXY NOTICE 30 Apr 2018 001-14785
DEF 14A Open Document Open Filing GSE SYSTEMS, INC. 2018 PROXY STATEMENT 30 Apr 2018 30 Apr 2018 001-14785
CERT Open Document Open Filing 27 Apr 2018 001-14785
25 Open Document Open Filing NOTIFICATION OF REMOVAL FROM LISTING AND/OR REGISTRATION UNDER SECTION 12(B) 27 Apr 2018 001-14785
8-A12B Open Document Open Filing FORM 8-A GSE SYSTEMS, INC. NASDAQ REGISTRATION 12(B) 27 Apr 2018 001-14785
8-K Open Document Open Filing GSE SYSTEMS, INC. TO BEGIN TRADING ON NASDAQ CAPITAL MARKET 19 Apr 2018 19 Apr 2018 001-14785
PRE 14A Open Document Open Filing GSE SYSTEMS, INC. PRELIMINARY PROXY STATEMENT 16 Apr 2018 12 Jun 2018 001-14785
4 Open Document Open Filing FORM 4 02 Apr 2018 31 Mar 2018
4 Open Document Open Filing FORM 4 02 Apr 2018 31 Mar 2018
4 Open Document Open Filing FORM 4 02 Apr 2018 31 Mar 2018
4 Open Document Open Filing FORM 4 02 Apr 2018 31 Mar 2018
4 Open Document Open Filing FORM 4 02 Apr 2018 31 Mar 2018
4 Open Document Open Filing FORM 4 02 Apr 2018 31 Mar 2018
4 Open Document Open Filing FORM 4 02 Apr 2018 31 Mar 2018
8-K Open Document Open Filing GSE SYSTEMS, INC. FORM 8-K QUINN AND LEWIS DEPARTURE 23 Mar 2018 23 Mar 2018 001-14785
3 Open Document Open Filing FORM 3 23 Mar 2018 20 Mar 2018
10-K Open Document | Data Open Filing GSE SYSTEMS, INC. - 2017 - 10-K 16 Mar 2018 31 Dec 2017 001-14785
8-K Open Document Open Filing FORM 8-K: EARNINGS RELEASE - FY 2017 15 Mar 2018 31 Dec 2017 001-14785
4 Open Document Open Filing FORM 4 02 Mar 2018 28 Feb 2018
SC 13G/A Open Document Open Filing 14 Feb 2018 005-45371
SC 13G/A Open Document Open Filing 13G/A 13 Feb 2018 005-45371
SC 13G/A Open Document Open Filing SC 13G/A 13 Feb 2018 005-45371
4 Open Document Open Filing FORM 4 03 Jan 2018 31 Dec 2017
4 Open Document Open Filing FORM 4 03 Jan 2018 31 Dec 2017
4 Open Document Open Filing FORM 4 03 Jan 2018 31 Dec 2017
4 Open Document Open Filing FORM 4 03 Jan 2018 31 Dec 2017
4 Open Document Open Filing FORM 4 03 Jan 2018 31 Dec 2017
4 Open Document Open Filing FORM 4 03 Jan 2018 31 Dec 2017
4 Open Document Open Filing FORM 4 03 Jan 2018 01 Jan 2018
4 Open Document Open Filing FORM 4 03 Jan 2018 01 Jan 2018
8-K Open Document Open Filing INTERNATIONAL RESTRUCTURING 27 Dec 2017 27 Dec 2017 001-14785
8-K/A Open Document Open Filing 30 Nov 2017 20 Sep 2017 001-14785
8-K Open Document Open Filing FORM 8-K GVP UPDATED INVESTOR PRESENTATION DATED NOVEMBER 29, 2017 29 Nov 2017 29 Nov 2017 001-14785
4 Open Document Open Filing FORM 4 16 Nov 2017 15 Nov 2017
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 1Q17 14 Nov 2017 30 Sep 2017 001-14785
8-K Open Document Open Filing EARNINGS RELEASE - Q3 2017 14 Nov 2017 30 Sep 2017 001-14785
4 Open Document Open Filing FORM 4 02 Oct 2017 30 Sep 2017
4 Open Document Open Filing FORM 4 02 Oct 2017 30 Sep 2017
4 Open Document Open Filing FORM 4 02 Oct 2017 30 Sep 2017
4 Open Document Open Filing FORM 4 02 Oct 2017 30 Sep 2017
4 Open Document Open Filing FORM 4 02 Oct 2017 30 Sep 2017
4 Open Document Open Filing FORM 4 02 Oct 2017 30 Sep 2017
8-K Open Document Open Filing ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT 20 Sep 2017 20 Sep 2017 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 1Q17 14 Aug 2017 30 Jun 2017 001-14785
8-K Open Document Open Filing EARNINGS RELEASE - Q2 2017 14 Aug 2017 30 Jun 2017 001-14785
4 Open Document Open Filing FORM 4 05 Jul 2017 30 Jun 2017
4 Open Document Open Filing FORM 4 05 Jul 2017 30 Jun 2017
4 Open Document Open Filing FORM 4 05 Jul 2017 30 Jun 2017
4 Open Document Open Filing FORM 4 05 Jul 2017 30 Jun 2017
4 Open Document Open Filing FORM 4 05 Jul 2017 30 Jun 2017
8-K Open Document Open Filing GSE FORM 8-K RESULTS OF ANNUAL MEETING 06-12-2017 16 Jun 2017 12 Jun 2017 001-14785
4 Open Document Open Filing FORM 4 14 Jun 2017 12 Jun 2017
3 Open Document Open Filing FORM 3 14 Jun 2017 12 Jun 2017
4 Open Document Open Filing FORM 4 14 Jun 2017 12 Jun 2017
4 Open Document Open Filing FORM 4 14 Jun 2017 12 Jun 2017
4 Open Document Open Filing FORM 4 13 Jun 2017 12 Jun 2017
4 Open Document Open Filing FORM 4 13 Jun 2017 12 Jun 2017
4 Open Document Open Filing FORM 4 13 Jun 2017 12 Jun 2017
4 Open Document Open Filing FORM 4 09 Jun 2017 07 Jun 2017
4 Open Document Open Filing FORM 4 07 Jun 2017 07 Jun 2017
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 1Q17 15 May 2017 31 Mar 2017 001-14785
8-K Open Document Open Filing GSE SYSTEMS FORM 8-K 1Q17 RESULTS OF OPERATIONS 15 May 2017 15 May 2017 001-14785
DEFA14A Open Document Open Filing GSE SYSTEMS, INC 2017 PROXY NOTICE 25 Apr 2017 001-14785
DEF 14A Open Document Open Filing GSE SYSTEMS 2017 PROXY STATEMENT 25 Apr 2017 21 Apr 2017 001-14785
4 Open Document Open Filing FORM 4 04 Apr 2017 31 Mar 2017
4 Open Document Open Filing FORM 4 04 Apr 2017 31 Mar 2017
4 Open Document Open Filing FORM 4 04 Apr 2017 31 Mar 2017
4 Open Document Open Filing FORM 4 04 Apr 2017 31 Mar 2017
4 Open Document Open Filing FORM 4 04 Apr 2017 31 Mar 2017
SC 13G/A Open Document Open Filing AMENDMENT NO. 6 TO SCHEDULE 13G 31 Mar 2017 005-45371
10-K Open Document | Data Open Filing GSE SYSTEMS, INC. - 2015 - 10-K 28 Mar 2017 31 Dec 2016 001-14785
8-K Open Document Open Filing FORM 8-K GVP INVESTOR PRESENTATION MARCH 14, 2017 13 Mar 2017 13 Mar 2017 001-14785
8-K Open Document Open Filing GVP FORM 8-K FY16 EARNINGS 09 Mar 2017 09 Mar 2017 001-14785
SC 13G/A Open Document Open Filing SC 13G/A 27 Feb 2017 005-45371
SC 13G Open Document Open Filing 14 Feb 2017 005-45371
SC 13G/A Open Document Open Filing SCHEDULE 13G/A 10 Feb 2017 005-45371
4 Open Document Open Filing FORM 4 25 Jan 2017 23 Jan 2017
4 Open Document Open Filing FORM 4 25 Jan 2017 23 Jan 2017
4 Open Document Open Filing FORM 4 25 Jan 2017 23 Jan 2017
4 Open Document Open Filing FORM 4 25 Jan 2017 23 Jan 2017
4 Open Document Open Filing FORM 4 25 Jan 2017 23 Jan 2017
4 Open Document Open Filing FORM 4 25 Jan 2017 23 Jan 2017
4 Open Document Open Filing FORM 4 04 Jan 2017 01 Jan 2017
4 Open Document Open Filing FORM 4 04 Jan 2017 01 Jan 2017
4 Open Document Open Filing FORM 4 04 Jan 2017 01 Jan 2017
4 Open Document Open Filing FORM 4 04 Jan 2017 01 Jan 2017
4 Open Document Open Filing FORM 4 04 Jan 2017 01 Jan 2017
4 Open Document Open Filing FORM 4 04 Jan 2017 01 Jan 2017
4 Open Document Open Filing FORM 4 04 Jan 2017 01 Jan 2017
4 Open Document Open Filing FORM 4 04 Jan 2017 01 Jan 2017
4 Open Document Open Filing FORM 4 04 Jan 2017 31 Dec 2016
8-K Open Document Open Filing GSE SYSTEMS NEW CREDIT FACILITY FORM 8-K 04 Jan 2017 04 Jan 2017 001-14785
UPLOAD Open Document Open Filing 03 Jan 2017
CORRESP Open Document Open Filing 22 Dec 2016
4 Open Document Open Filing FORM 4 14 Dec 2016 12 Dec 2016
8-K Open Document Open Filing GSE SYSTEMS, INC. FORM 8-K DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS; ELECTION 14 Dec 2016 08 Dec 2016 001-14785
4 Open Document Open Filing FORM 4 13 Dec 2016 13 Dec 2016
4 Open Document Open Filing FORM 4 12 Dec 2016 08 Dec 2016
4 Open Document Open Filing FORM 4 12 Dec 2016 08 Dec 2016
UPLOAD Open Document Open Filing 08 Dec 2016
8-K Open Document Open Filing GVP FORM 8-K 3Q16 FINANCIAL RESULTS PRESS RELEASE 16 Nov 2016 16 Nov 2016 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 1Q16 14 Nov 2016 30 Sep 2016 001-14785
SC 13G Open Document Open Filing SCHEDULE 13G 27 Oct 2016 005-45371
4 Open Document Open Filing FORM 4 04 Oct 2016 30 Sep 2016
4 Open Document Open Filing FORM 4 21 Sep 2016 19 Sep 2016
4 Open Document Open Filing FORM 4 21 Sep 2016 19 Sep 2016
4 Open Document Open Filing FORM 4 21 Sep 2016 19 Sep 2016
4 Open Document Open Filing FORM 4 21 Sep 2016 19 Sep 2016
4 Open Document Open Filing FORM 4 21 Sep 2016 19 Sep 2016
4 Open Document Open Filing FORM 4 21 Sep 2016 19 Sep 2016
4 Open Document Open Filing FORM 4 21 Sep 2016 19 Sep 2016
4 Open Document Open Filing FORM 4 21 Sep 2016 19 Sep 2016
4 Open Document Open Filing FORM 4 21 Sep 2016 19 Sep 2016
3 Open Document Open Filing FORM 3 21 Sep 2016 14 Sep 2016
4/A Open Document Open Filing FORM 4/A 21 Sep 2016 02 Sep 2016
4 Open Document Open Filing FORM 4 20 Sep 2016 02 Sep 2016
8-K Open Document Open Filing AMENDMENTS TO ARTICLES OF INCORPORATION OR BYLAWS; CHANGE IN FISCAL YEAR. 16 Sep 2016 16 Sep 2016 001-14785
8-K Open Document Open Filing FORM 8-K GVP INVESTOR PRESENTATION SEPTEMBER 15, 2016 15 Sep 2016 13 Sep 2016 001-14785
8-K Open Document Open Filing FORM 8-K APPOINTMENT OF CERTAIN DIRECTORS OR OFFICERS 15 Sep 2016 14 Sep 2016 001-14785
4/A Open Document Open Filing FORM 4/A 02 Sep 2016 30 Jun 2016
8-K Open Document Open Filing FORM 8-K SORRELLS AGREEMENT 19 Aug 2016 17 Aug 2016 001-14785
4 Open Document Open Filing FORM 4 17 Aug 2016 15 Aug 2016
8-K Open Document Open Filing GVP FORM 8-K 2Q16 EARNINGS 15 Aug 2016 15 Aug 2016 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 1Q16 15 Aug 2016 30 Jun 2016 001-14785
3 Open Document Open Filing FORM 3 08 Aug 2016 08 Aug 2016
8-K Open Document Open Filing FORM 8-K APPOINTMENT OF CERTAIN DIRECTORS OR OFFICERS 08 Aug 2016 08 Aug 2016 001-14785
4 Open Document Open Filing FORM 4 05 Jul 2016 01 Jul 2016
3 Open Document Open Filing FORM 3 05 Jul 2016 01 Jul 2016
8-K Open Document Open Filing DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS; ELECTION OF DIRECTORS; APPOINTMENT O 05 Jul 2016 05 Jul 2016 001-14785
4 Open Document Open Filing FORM 4 01 Jul 2016 01 Jul 2016
4 Open Document Open Filing FORM 4 01 Jul 2016 01 Jul 2016
4 Open Document Open Filing FORM 4 01 Jul 2016 01 Jul 2016
4 Open Document Open Filing FORM 4 01 Jul 2016 01 Jul 2016
4 Open Document Open Filing FORM 4 01 Jul 2016 01 Jul 2016
4 Open Document Open Filing FORM 4 01 Jul 2016 01 Jul 2016
4 Open Document Open Filing FORM 4 01 Jul 2016 01 Jul 2016
4 Open Document Open Filing FORM 4 01 Jul 2016 01 Jul 2016
8-K Open Document Open Filing DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS; ELECTION OF DIRECTORS; APPOINTMENT O 01 Jul 2016 01 Jul 2016 001-14785
4 Open Document Open Filing FORM 4 30 Jun 2016 30 Jun 2016
S-8 Open Document Open Filing GSE SYSTEMS 2016 REGISTRATION STATEMENT ADDITIONAL SHARES FOR 1995 PLAN 24 Jun 2016 333-212241
8-K Open Document | Data Open Filing GSE SYSTEMS JOINS RUSSELL MICROCAP INDEX 16 Jun 2016 16 Jun 2016 001-14785
4 Open Document Open Filing FORM 4 15 Jun 2016 14 Jun 2016
8-K Open Document Open Filing FORM 8-K RESULTS OF GSE SYSTEMS, INC. 2016 ANNUAL SHAREHOLDERS MEETING 10 Jun 2016 07 Jun 2016 001-14785
4 Open Document Open Filing FORM 4 01 Jun 2016 27 May 2016
4/A Open Document Open Filing FORM 4/A 27 May 2016 25 May 2016
4 Open Document Open Filing FORM 4 27 May 2016 31 Mar 2016
DEFA14A Open Document Open Filing SUPPLEMENT TO THE PROXY STATEMENT FOR THE ANNUAL MEETING OF STOCKHOLDERS TO BE H 27 May 2016 001-14785
4/A Open Document Open Filing FORM 4/A 27 May 2016 27 May 2016
4/A Open Document Open Filing FORM 4/A 27 May 2016 23 May 2016
4 Open Document Open Filing FORM 4 26 May 2016 25 May 2016
4 Open Document Open Filing FORM 4 26 May 2016 24 May 2016
4 Open Document Open Filing FORM 4 25 May 2016 23 May 2016
4 Open Document Open Filing FORM 4 23 May 2016 20 May 2016
8-K Open Document | Data Open Filing GSE SYSTEMS FORM 8-K 1Q16 RESULTS OF OPERATIONS 16 May 2016 16 May 2016 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 1Q16 16 May 2016 31 Mar 2016 001-14785
DEFA14A Open Document Open Filing GSE SYSTEMS 2016 DEFA14A 27 Apr 2016 001-14785
DEF 14A Open Document Open Filing GSE SYSTEMS 2016 PROXY STATEMENT 27 Apr 2016 31 Dec 2015 001-14785
10-K Open Document | Data Open Filing GSE SYSTEMS, INC. - 2015 - 10-K 25 Mar 2016 31 Dec 2015 001-14785
3 Open Document Open Filing FORM 3 24 Mar 2016 22 Mar 2016
4 Open Document Open Filing FORM 4 22 Mar 2016 21 Mar 2016
3 Open Document Open Filing FORM 3 22 Mar 2016 21 Mar 2016
8-K Open Document | Data Open Filing GVP FORM 8-K PRESS RELEASE 22 Mar 2016 22 Mar 2016 001-14785
8-K Open Document | Data Open Filing GVP FORM 8-K CONTRACT PRESS RELEASE 17 Mar 2016 17 Mar 2016 001-14785
8-K Open Document | Data Open Filing GSE SYSTEMS, INC. 12-21-2015 FINANCIAL RESULTS PRESS RELEASE 15 Mar 2016 15 Mar 2016 001-14785
4 Open Document Open Filing FORM 4 03 Mar 2016 01 Mar 2016
4 Open Document Open Filing FORM 4 03 Mar 2016 01 Mar 2016
4 Open Document Open Filing FORM 4 03 Mar 2016 01 Mar 2016
4 Open Document Open Filing FORM 4 03 Mar 2016 01 Mar 2016
SC 13G/A Open Document Open Filing SC 13G/A NO.5 10 Feb 2016 005-45371
4 Open Document Open Filing FORM 4 05 Feb 2016 01 Feb 2016
3 Open Document Open Filing FORM 3 05 Feb 2016 01 Feb 2016
8-K Open Document Open Filing GVP LOUDERMILK - FORM 8-K 012816 28 Jan 2016 28 Jan 2016 001-14785
4 Open Document Open Filing FORM 4 26 Jan 2016 22 Jan 2016
SC 13D/A Open Document Open Filing SCHEDULE 13D AMENDMENT NO. 1 26 Jan 2016 005-45371
SC 13D Open Document Open Filing SC 13D 17 Dec 2015 005-45371
4 Open Document Open Filing FORM 4 16 Dec 2015 14 Dec 2015
4 Open Document Open Filing FORM 4 16 Dec 2015 14 Dec 2015
4 Open Document Open Filing FORM 4 14 Dec 2015 11 Dec 2015
4/A Open Document Open Filing FORM 4/A 14 Dec 2015 02 Dec 2015
4/A Open Document Open Filing FORM 4/A 14 Dec 2015 02 Dec 2015
4/A Open Document Open Filing FORM 4/A 14 Dec 2015 20 Nov 2015
4/A Open Document Open Filing FORM 4/A 14 Dec 2015 20 Nov 2015
4/A Open Document Open Filing FORM 4/A 14 Dec 2015 25 Nov 2015
4 Open Document Open Filing FORM 4 04 Dec 2015 02 Dec 2015
4 Open Document Open Filing FORM 4 04 Dec 2015 02 Dec 2015
3 Open Document Open Filing FORM 3 04 Dec 2015 03 Jun 2015
4 Open Document Open Filing FORM 4 03 Dec 2015 01 Dec 2015
3 Open Document Open Filing FORM 3 03 Dec 2015 01 Dec 2015
4 Open Document Open Filing FORM 4 30 Nov 2015 25 Nov 2015
4 Open Document Open Filing FORM 4 24 Nov 2015 20 Nov 2015
4 Open Document Open Filing FORM 4 24 Nov 2015 20 Nov 2015
SC 13D/A Open Document Open Filing SC 13D/A 24 Nov 2015 005-45371
4 Open Document Open Filing FORM 4 19 Nov 2015 17 Nov 2015
8-K Open Document Open Filing GSE SYSTEMS FORM 8-K 3Q15 FINANCIAL RESULTS 12 Nov 2015 12 Nov 2015 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 3Q15 12 Nov 2015 30 Sep 2015 001-14785
4 Open Document Open Filing FORM 4 06 Nov 2015 30 Oct 2015
4 Open Document Open Filing FORM 4 06 Nov 2015 30 Oct 2015
8-K Open Document Open Filing DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS 04 Nov 2015 04 Nov 2015 001-14785
8-K Open Document Open Filing GVP FORM 8-K DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS 01 Oct 2015 01 Oct 2015 001-14785
8-K Open Document Open Filing FORM 8-K GVP RESTRUCTURING 28 Sep 2015 22 Sep 2015 001-14785
4 Open Document Open Filing FORM 4 25 Aug 2015 25 Aug 2015
8-K Open Document Open Filing GVP SORRELLS - FORM 8-K 082515 25 Aug 2015 25 Aug 2015 001-14785
8-K Open Document Open Filing GSE SYSTEMS FORM 8-K 2Q15 FINANCIAL RESULTS 13 Aug 2015 13 Aug 2015 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 2Q15 13 Aug 2015 30 Jun 2015 001-14785
3 Open Document Open Filing FORM 3 06 Aug 2015 03 Aug 2015
4 Open Document Open Filing FORM 4 05 Aug 2015 03 Aug 2015
8-K Open Document Open Filing FORM 8-K APPOINTMENT OF KYLE LOUDERMILK 31 Jul 2015 31 Jul 2015 001-14785
8-K Open Document Open Filing GSE 060315 FORM 8-K RESULTS OF ANNUAL SHAREHOLDERS MEETING 08 Jun 2015 03 Jun 2015 001-14785
SC 13D/A Open Document Open Filing SC 13D/A 27 May 2015 005-45371
8-K Open Document Open Filing 14 May 2015 14 May 2015 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 1Q15 14 May 2015 31 Mar 2015 001-14785
DEF 14A Open Document Open Filing GSE SYSTEMS 2015 PROXY STATEMENT 22 Apr 2015 31 Dec 2014 001-14785
8-K Open Document Open Filing 13 Apr 2015 13 Apr 2015 001-14785
8-K Open Document Open Filing GSE 12-31-2014 EARNINGS AND EMPLOYMENT AGREEMENTS 19 Mar 2015 18 Mar 2015 001-14785
10-K Open Document | Data Open Filing GSE SYSTEMS, INC. - 2014 - 10-K 19 Mar 2015 31 Dec 2014 001-14785
4 Open Document Open Filing FORM 4 04 Mar 2015 02 Mar 2015
4 Open Document Open Filing FORM 4 04 Mar 2015 02 Mar 2015
4 Open Document Open Filing FORM 4 04 Mar 2015 02 Mar 2015
4 Open Document Open Filing FORM 4 04 Mar 2015 02 Mar 2015
4 Open Document Open Filing FORM 4 04 Mar 2015 02 Mar 2015
SC 13G/A Open Document Open Filing SCHEDULE 13G AMENDMENT NO. 4 17 Feb 2015 005-45371
SC 13G/A Open Document Open Filing SC 13G/A 09 Feb 2015 005-45371
8-K Open Document Open Filing AMENDMENTS TO ARTICLES OF INCORPORATION OR BYLAWS; CHANGE IN FISCAL YEAR 04 Feb 2015 04 Feb 2015 001-14785
SC 13G Open Document Open Filing NONE 30 Jan 2015 005-45371
8-K/A Open Document Open Filing FORM 8-K/A 29 Jan 2015 14 Nov 2014 001-14785
SC 13G/A Open Document Open Filing MARK LEONARD SCHEDULE 13G AMENDMENT NO 1 06 Jan 2015 005-45371
SC 13D Open Document Open Filing SC 13D 30 Dec 2014 005-45371
SC 13G/A Open Document Open Filing SC 13G/A 03 Dec 2014 005-45371
8-K Open Document Open Filing GSE SYSTEMS FORM 8-K 3Q14 17 Nov 2014 14 Nov 2014 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 2Q14 14 Nov 2014 30 Sep 2014 001-14785
SC 13G Open Document Open Filing SCHEDULE 13G - MARK LEONARD 18 Aug 2014 005-45371
8-K Open Document Open Filing GSE SYSTEMS FORM 8-K 2Q14 RESULTS PRESS RELEASE 15 Aug 2014 15 Aug 2014 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 2Q14 14 Aug 2014 30 Jun 2014 001-14785
SC 13G Open Document Open Filing SC 13G 23 Jul 2014 005-45371
SC 13G/A Open Document Open Filing JULY 11, 2014 11 Jul 2014 005-45371
SC 13G Open Document Open Filing NONE 11 Jul 2014 005-45371
8-K Open Document Open Filing FORM 8-K 1Q14 PRESS RELEASE 15 May 2014 31 Mar 2014 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 1Q14 15 May 2014 31 Mar 2014 001-14785
DEF 14A Open Document Open Filing GSE SYSTEMS 2014 PROXY STATEMENT 29 Apr 2014 31 Dec 2013 001-14785
8-K Open Document Open Filing GSE SYSTEMS FORM 8-K 26 Mar 2014 26 Mar 2014 001-14785
10-K Open Document | Data Open Filing 26 Mar 2014 31 Dec 2013 001-14785
4 Open Document Open Filing FORM 4 12 Mar 2014 03 Mar 2014
4 Open Document Open Filing FORM 4 12 Mar 2014 03 Mar 2014
4 Open Document Open Filing FORM 4 12 Mar 2014 03 Mar 2014
4 Open Document Open Filing FORM 4 12 Mar 2014 03 Mar 2014
4 Open Document Open Filing FORM 4 12 Mar 2014 03 Mar 2014
SC 13G/A Open Document Open Filing SCHEDULE 13G AMENDMENT NO. 3 14 Feb 2014 005-45371
SC 13G/A Open Document Open Filing FORM SC 13G/A 12 Feb 2014 005-45371
SC 13G/A Open Document Open Filing FEBRUARY 4, 2014 06 Feb 2014 005-45371
8-K Open Document Open Filing GSE FORM 8-K 3Q13 PRESS RELEASE 14 Nov 2013 30 Sep 2013 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS FORM 10-Q 3Q13 14 Nov 2013 30 Sep 2013 001-14785
4 Open Document Open Filing FORM 4 11 Sep 2013 06 Sep 2013
8-K Open Document Open Filing GSE SYSTEMS FORM 8-K 2Q13 RESULTS PRESS RELEASE 14 Aug 2013 09 Aug 2013 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS FORM 10-Q 2Q13 14 Aug 2013 09 Aug 2013 001-14785
8-K Open Document Open Filing FORM 8-K GSE ANNUAL MEETING RESULTS 13 Jun 2013 12 Jun 2013 001-14785
10-Q Open Document | Data Open Filing FORM 10-Q 1Q13 15 May 2013 31 Mar 2013 001-14785
8-K Open Document Open Filing FORM 8-K GVP 1Q2013 14 May 2013 31 Mar 2013 001-14785
DEF 14A Open Document Open Filing GSE SYSTEMS 2013 PROXY STATEMENT 30 Apr 2013 30 Apr 2013 001-14785
8-K Open Document Open Filing GSE FORM 8-K 23 Apr 2013 17 Apr 2013 001-14785
4 Open Document Open Filing FORM 4 29 Mar 2013 07 Mar 2013
4 Open Document Open Filing FORM 4 18 Mar 2013 14 Mar 2013
4 Open Document Open Filing FORM 4 14 Mar 2013 07 Mar 2013
4 Open Document Open Filing FORM 4 14 Mar 2013 07 Mar 2013
4 Open Document Open Filing FORM 4 14 Mar 2013 07 Mar 2013
4 Open Document Open Filing FORM 4 14 Mar 2013 07 Mar 2013
4 Open Document Open Filing FORM 4 14 Mar 2013 07 Mar 2013
8-K Open Document Open Filing FORM 8-K GSE SYSTEMS FY12 RESULTS OF OPERATIONS 11 Mar 2013 11 Mar 2013 001-14785
10-K Open Document | Data Open Filing GSE SYSTEMS 2012 FORM 10-K 11 Mar 2013 31 Dec 2012 001-14785
SC 13G/A Open Document Open Filing GVP_123112 13 Feb 2013 005-45371
SC 13G/A Open Document Open Filing SCHEDULE 13G/A 08 Feb 2013 005-45371
SC 13G/A Open Document Open Filing SC 13G/A 06 Feb 2013 005-45371
SC 13G Open Document Open Filing JANUARY 14, 2013 14 Jan 2013 005-45371
3 Open Document Open Filing FORM 3 02 Jan 2013 01 Jan 2013
8-K Open Document Open Filing FORM 8-K 27 Dec 2012 20 Dec 2012 001-14785
4 Open Document Open Filing FORM 4 20 Dec 2012 14 Dec 2012
4 Open Document Open Filing FORM 4 20 Dec 2012 14 Dec 2012
8-K Open Document Open Filing FORM 8-K 3Q12 FINANCIAL RESULTS 14 Nov 2012 30 Sep 2012 001-14785
10-Q Open Document | Data Open Filing FORM 10-Q 3Q12 14 Nov 2012 30 Sep 2012 001-14785
UPLOAD Open Document Open Filing 04 Oct 2012
CORRESP Open Document Open Filing 21 Sep 2012
4 Open Document Open Filing FORM 4 18 Sep 2012 13 Sep 2012
4 Open Document Open Filing FORM 4 13 Sep 2012 11 Sep 2012
4 Open Document Open Filing FORM 4 10 Sep 2012 06 Sep 2012
UPLOAD Open Document Open Filing 07 Sep 2012
4 Open Document Open Filing FORM 4 29 Aug 2012 27 Aug 2012
4 Open Document Open Filing FORM 4 29 Aug 2012 28 Aug 2012
S-8 Open Document Open Filing GSE SYSTEMS S-8 REGISTRATION STATEMENT 20 Aug 2012 333-183427
8-K Open Document Open Filing GSE SYSTEMS FORM 8-K 2Q12 EARNINGS PRESS RELEASE 13 Aug 2012 13 Aug 2012 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS FORM 10-Q 2Q12 13 Aug 2012 30 Jun 2012 001-14785
SC 13G Open Document Open Filing SCHEDULE 13G 26 Jun 2012 005-45371
8-K Open Document Open Filing FORM 8-K GSE SHAREHOLDERS MEETING RESULTS 15 Jun 2012 15 Jun 2012 001-14785
4 Open Document Open Filing FORM 4 21 May 2012 17 May 2012
4 Open Document Open Filing FORM 4 21 May 2012 17 May 2012
4 Open Document Open Filing FORM 4 21 May 2012 17 May 2012
4 Open Document Open Filing FORM 4 21 May 2012 17 May 2012
4 Open Document Open Filing FORM 4 21 May 2012 17 May 2012
4 Open Document Open Filing FORM 4 21 May 2012 17 May 2012
SC 13D/A Open Document Open Filing SC 13D/A 18 May 2012 005-45371
4 Open Document Open Filing MAIN DOCUMENT DESCRIPTION 17 May 2012 15 May 2012
8-K Open Document Open Filing GVP FORM 8-K 1Q12 EARNINGS 15 May 2012 15 May 2012 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS FORM 10-Q 1Q12 15 May 2012 09 May 2012 001-14785
4 Open Document Open Filing MAIN DOCUMENT DESCRIPTION 14 May 2012 10 May 2012
SC 13G/A Open Document Open Filing GVP 04302012 A2 09 May 2012 005-45371
DEFR14A Open Document Open Filing GSE 2012 REVISED PROXY STATEMENT 04 May 2012 001-14785
DEF 14A Open Document Open Filing GSE 2012 PROXY STATEMENT 30 Apr 2012 30 Apr 2012 001-14785
3 Open Document Open Filing MAIN DOCUMENT DESCRIPTION 25 Apr 2012 16 Apr 2012
SC 13D/A Open Document Open Filing SC 13D/A 20 Apr 2012 005-45371
4/A Open Document Open Filing PRIMARY DOCUMENT 19 Apr 2012 15 Mar 2012
SC 13D/A Open Document Open Filing SCHEDULE 13D/A 19 Apr 2012 005-45371
5/A Open Document Open Filing PRIMARY DOCUMENT 30 Mar 2012 31 Dec 2011
5 Open Document Open Filing PRIMARY DOCUMENT 30 Mar 2012 31 Dec 2011
5 Open Document Open Filing PRIMARY DOCUMENT 30 Mar 2012 31 Dec 2010
5 Open Document Open Filing PRIMARY DOCUMENT 30 Mar 2012 31 Dec 2009
5 Open Document Open Filing PRIMARY DOCUMENT 30 Mar 2012 31 Dec 2008
5 Open Document Open Filing PRIMARY DOCUMENT 30 Mar 2012 31 Dec 2007
4 Open Document Open Filing PRIMARY DOCUMENT 27 Mar 2012 15 Mar 2012
SC 13G Open Document Open Filing SCHEDULE 13G 19 Mar 2012 005-45371
SC 13D Open Document Open Filing SC 13D 14 Mar 2012 005-45371
3 Open Document Open Filing FORM 3 14 Mar 2012 06 Mar 2012
8-K Open Document Open Filing FORM 8-K SORRELLS BOD APPOINTMENT 09 Mar 2012 09 Mar 2012 001-14785
8-K Open Document Open Filing GSE SYSTEMS FORM 8-K FY11 EARNINGS PRESS RELEASE 08 Mar 2012 08 Mar 2012 001-14785
10-K Open Document | Data Open Filing GSE SYSTEMS 2011 FORM 10-K 08 Mar 2012 21 Feb 2012 001-14785
8-K Open Document Open Filing FORM 8-K MICHAEL FELDMAN RESIGNATION 29 Feb 2012 29 Feb 2012 001-14785
SC 13G/A Open Document Open Filing GVP 123111 14 Feb 2012 005-45371
SC 13G/A Open Document Open Filing AMENDMENT NO. 1 TO SCHEDULE 13G 14 Feb 2012 005-45371
SC 13G/A Open Document Open Filing SC 13G/A 13 Feb 2012 005-45371
SC 13G/A Open Document Open Filing 10 Feb 2012 005-45371
8-K Open Document Open Filing PEDERSEN RESIGNATION 06 Jan 2012 06 Jan 2012 001-14785