Gse Systems Inc

Business address
6940 Columbia Gateway Drive, Suite 470, Columbia, MD, 21046-3308
State of incorporation
DE
Fiscal year end
December 31
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Gse Systems Inc has filed 1,306 SEC EDGAR filings since 2/14/1996

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
SCHEDULE 13G/A Open Document Open Filing Feb 14, 2025 005-45371
SC 13G/A Open Document Open Filing Nov 14, 2024 005-45371
EFFECT Open Document Open Filing Nov 13, 2024 333-276128
EFFECT Open Document Open Filing Nov 13, 2024 333-264114
15-12G Open Document Open Filing 15-12G Nov 13, 2024 001-14785
POS AM Open Document Open Filing POS AM Nov 8, 2024 333-276128
POS AM Open Document Open Filing POS AM Nov 8, 2024 333-264114
S-8 POS Open Document Open Filing S-8 POS Nov 8, 2024 333-212241
S-8 POS Open Document Open Filing S-8 POS Nov 8, 2024 333-183427
S-8 POS Open Document Open Filing S-8 POS Nov 8, 2024 333-150249
S-8 POS Open Document Open Filing S-8 POS Nov 8, 2024 333-138702
S-8 POS Open Document Open Filing S-8 POS Nov 8, 2024 333-08805
25-NSE Open Document Open Filing Nov 1, 2024 001-14785
8-K Open Document | Data Open Filing 8-K Nov 1, 2024 Oct 31, 2024 001-14785
8-K Open Document | Data Open Filing 8-K Oct 29, 2024 Oct 29, 2024 001-14785
DEFA14A Open Document Open Filing DEFA14A Oct 25, 2024 001-14785
8-K Open Document | Data Open Filing 8-K Oct 25, 2024 Oct 25, 2024 001-14785
DEFA14A Open Document Open Filing DEFA 14A Oct 23, 2024 001-14785
8-K Open Document | Data Open Filing 8-K Oct 23, 2024 Oct 23, 2024 001-14785
DEFA14A Open Document Open Filing DEFA 14A Oct 22, 2024 001-14785
8-K Open Document | Data Open Filing 8-K Oct 22, 2024 Oct 22, 2024 001-14785
DEFA14A Open Document Open Filing DEFA 14A Oct 21, 2024 001-14785
8-K Open Document | Data Open Filing 8-K Oct 21, 2024 Oct 18, 2024 001-14785
DEFA14A Open Document Open Filing DEFA14A Oct 18, 2024 001-14785
8-K Open Document | Data Open Filing 8-K Oct 18, 2024 Oct 14, 2024 001-14785
DEFA14A Open Document Open Filing DEFA14A Oct 16, 2024 001-14785
8-K Open Document | Data Open Filing 8-K Oct 16, 2024 Oct 16, 2024 001-14785
DEFA14A Open Document Open Filing DEFA14A Oct 15, 2024 001-14785
SC 13D Open Document Open Filing SCHEDULE 13D Oct 11, 2024 005-45371
DEFA14A Open Document Open Filing DEF14A Oct 8, 2024 001-14785
8-K Open Document | Data Open Filing 8-K Oct 8, 2024 Oct 2, 2024 001-14785
4 Open Document Open Filing Oct 2, 2024 Sep 30, 2024
4 Open Document Open Filing Oct 2, 2024 Sep 30, 2024
4 Open Document Open Filing Oct 2, 2024 Sep 30, 2024
4 Open Document Open Filing Oct 2, 2024 Sep 30, 2024
DEFM14A Open Document Open Filing DEFM14A Sep 18, 2024 001-14785
DEFM14A Open Document Open Filing DEFM14A Sep 16, 2024 001-14785
PREM14A Open Document Open Filing PREM14A Sep 4, 2024 Sep 4, 2024 001-14785
10-Q Open Document | Data Open Filing 10-Q Aug 14, 2024 Jun 30, 2024 001-14785
8-K Open Document | Data Open Filing 8-K Aug 14, 2024 Aug 14, 2024 001-14785
SC 13G/A Open Document Open Filing AMENDMENT NO. 1 TO SCHEDULE 13G Aug 9, 2024 005-45371
8-K Open Document | Data Open Filing FORM 8-K Aug 8, 2024 Aug 7, 2024 001-14785
4 Open Document Open Filing Aug 5, 2024 Jul 22, 2024
8-K Open Document Open Filing RAVI KHANNA EMPLOYMENT AGREEMENT Jul 26, 2024 Jul 22, 2024 001-14785
144 Open Document Open Filing Jul 3, 2024 001-14785
4 Open Document Open Filing Jul 2, 2024 Jun 30, 2024
4 Open Document Open Filing Jul 2, 2024 Jun 30, 2024
4 Open Document Open Filing Jul 2, 2024 Jun 30, 2024
4 Open Document Open Filing Jul 2, 2024 Jun 30, 2024
8-K Open Document Open Filing FORM 8-K GSE SYSTEMS 2024 ANNUAL MEETING RESULTS Jul 2, 2024 Jul 1, 2024 001-14785
DEFA14A Open Document Open Filing GSE SYSTEMS, INC 2024 PROXY CARD May 29, 2024 001-14785
DEF 14A Open Document Open Filing GSE SYSTEMS, INC. 2024 DEFINITIVE PROXY May 24, 2024 Jul 1, 2024 001-14785
10-Q Open Document | Data Open Filing 10-Q May 15, 2024 Mar 31, 2024 001-14785
8-K Open Document | Data Open Filing 8-K May 15, 2024 May 15, 2024 001-14785
8-K Open Document Open Filing GSE SYSTEMS, INC FORM 8-K APPOINTMENT OF DAMIAN DELONGCHAMP AS CHIEF OPERATING O May 14, 2024 May 8, 2024 001-14785
PRE 14A Open Document Open Filing GSE PRELIMINARY PROXY STATEMENT May 13, 2024 May 13, 2024 001-14785
SC 13D Open Document Open Filing LOUDERMILK SCHEDULE 13D May 6, 2024 005-45371
8-K Open Document Open Filing GSE SYSTEMS, INC. FORM 8-K Apr 30, 2024 Apr 24, 2024 001-14785
10-K/A Open Document Open Filing GSE SYSTEMS FORM 10-K/A 04-29-2024 Apr 29, 2024 Apr 29, 2024 001-14785
SC 13G Open Document Open Filing SCHEDULE 13G Apr 5, 2024 005-45371
10-K/A Open Document | Data Open Filing 10-K/A Apr 2, 2024 Dec 31, 2023 001-14785
4 Open Document Open Filing Apr 2, 2024 Mar 31, 2024
4 Open Document Open Filing Apr 2, 2024 Mar 31, 2024
4 Open Document Open Filing Apr 2, 2024 Mar 31, 2024
4 Open Document Open Filing Apr 2, 2024 Mar 31, 2024
4 Open Document Open Filing Apr 2, 2024 Mar 31, 2024
10-K Open Document | Data Open Filing 10-K Apr 2, 2024 Dec 31, 2023 001-14785
NT 10-K Open Document Open Filing NT 10-K Apr 2, 2024 Dec 31, 2023 001-14785
8-K Open Document | Data Open Filing 8-K Apr 1, 2024 Apr 1, 2024 001-14785
SC 13G/A Open Document Open Filing Feb 14, 2024 005-45371
SC 13G/A Open Document Open Filing Feb 13, 2024 005-45371
8-K Open Document Open Filing GSE SYSTEMS, INC. - FORM 8-K LIND NOTE AMENDMENTS FEB. 2024 Feb 13, 2024 Feb 12, 2024 001-14785
SC 13G/A Open Document Open Filing SC 13G/A Feb 9, 2024 005-45371
4 Open Document Open Filing Jan 3, 2024 Dec 31, 2023
4 Open Document Open Filing Jan 3, 2024 Dec 31, 2023
4 Open Document Open Filing Jan 3, 2024 Dec 31, 2023
4 Open Document Open Filing Jan 3, 2024 Dec 31, 2023
4 Open Document Open Filing Jan 3, 2024 Dec 31, 2023
EFFECT Open Document Open Filing Dec 29, 2023 333-276128
CORRESP Open Document Open Filing Dec 28, 2023
UPLOAD Open Document Open Filing Dec 21, 2023
S-3/A Open Document Open Filing S-3/A Dec 20, 2023 333-276128
S-3 Open Document Open Filing S-3 Dec 19, 2023 333-276128
8-K Open Document Open Filing GSE SYSTEMS, INC. UNREGISTERED SALE OF SECURITIES Dec 18, 2023 Dec 18, 2023 001-14785
SC 13G Open Document Open Filing Dec 12, 2023 005-45371
8-K Open Document Open Filing GSE FORM 8-K ITEM 3.02. UNREGISTERED SALE OF SECURITIES. Dec 6, 2023 Dec 6, 2023 001-14785
RW Open Document Open Filing GSE SYSTEMS, INC. - REQUEST FOR WITHDRAWAL - FORM RW Dec 1, 2023 333-275791
S-3 Open Document Open Filing POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-3 REGISTRATION STATEMENT NO. 333-264114 Nov 30, 2023 333-275791
4 Open Document Open Filing Nov 27, 2023 Nov 20, 2023
8-K Open Document Open Filing NASDAQ STAFF DETERMINATION - REQUIREMENT CURED Nov 17, 2023 Nov 17, 2023 001-14785
10-Q Open Document | Data Open Filing 10-Q Nov 14, 2023 Sep 30, 2023 001-14785
8-K Open Document | Data Open Filing 8-K Nov 14, 2023 Nov 14, 2023 001-14785
8-K Open Document Open Filing NASDAQ DELISTING NOTICE AND APPEAL Nov 3, 2023 Nov 3, 2023 001-14785
8-K Open Document Open Filing REVERSE STOCK SPLIT Oct 26, 2023 Oct 25, 2023 001-14785
8-K Open Document Open Filing Oct 6, 2023 Oct 6, 2023 001-14785
4 Open Document Open Filing Oct 3, 2023 Sep 30, 2023
4 Open Document Open Filing Oct 3, 2023 Sep 30, 2023
4 Open Document Open Filing Oct 3, 2023 Sep 30, 2023
4 Open Document Open Filing Oct 3, 2023 Sep 30, 2023
4 Open Document Open Filing Oct 3, 2023 Sep 30, 2023
10-Q Open Document | Data Open Filing 10-Q Aug 16, 2023 Jun 30, 2023 001-14785
NT 10-Q Open Document Open Filing NT 10-Q Aug 15, 2023 Jun 30, 2023 001-14785
8-K Open Document | Data Open Filing 8-K Aug 14, 2023 Aug 14, 2023 001-14785
8-K Open Document Open Filing GSE LOUDERMILK AGREEMENT Jul 28, 2023 Jul 28, 2023 001-14785
4 Open Document Open Filing Jul 5, 2023 Jun 30, 2023
4 Open Document Open Filing Jul 5, 2023 Jun 30, 2023
4 Open Document Open Filing Jul 5, 2023 Jun 30, 2023
4 Open Document Open Filing Jul 5, 2023 Jun 30, 2023
8-K Open Document Open Filing FORM 8-K GSE LIND 2003 TRANSACTION Jun 26, 2023 Jun 26, 2023 001-14785
4 Open Document Open Filing Jun 14, 2023 Jun 12, 2023
4 Open Document Open Filing Jun 14, 2023 Jun 12, 2023
4 Open Document Open Filing Jun 14, 2023 Jun 12, 2023
8-K Open Document Open Filing GSE SYSTEMS, INC. 2023 ANNUAL MEETING RESULTS Jun 13, 2023 Jun 12, 2023 001-14785
10-Q Open Document | Data Open Filing 10-Q May 15, 2023 Mar 31, 2023 001-14785
8-K Open Document | Data Open Filing 8-K May 15, 2023 May 15, 2023 001-14785
8-K Open Document Open Filing GSE SYSTEMS, INC FORM 8-K DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS May 8, 2023 May 7, 2023 001-14785
8-K Open Document Open Filing GSE SYSTEMS FORM 8-K NASDAQ EXTENSION GRANT May 4, 2023 May 4, 2023 001-14785
DEFA14A Open Document Open Filing GSE SYSTEMS, INC. 2023 ANNUAL MEETING NOTICE May 2, 2023 001-14785
DEF 14A Open Document Open Filing GSE DEFINITIVE PROXY STATEMENT May 2, 2023 May 2, 2023 001-14785
8-K Open Document Open Filing GVP FORM 8-K (NEW ORDERS) Apr 25, 2023 Apr 25, 2023 001-14785
PRE 14A Open Document Open Filing GSE PRELIMINARY PROXY STATEMENT 2023 Apr 17, 2023 Apr 17, 2023 001-14785
10-K Open Document | Data Open Filing 10-K Apr 17, 2023 Dec 31, 2022 001-14785
4 Open Document Open Filing Apr 7, 2023 Apr 5, 2023
4 Open Document Open Filing Apr 7, 2023 Apr 5, 2023
4 Open Document Open Filing Apr 7, 2023 Apr 5, 2023
4 Open Document Open Filing Apr 7, 2023 Apr 5, 2023
4 Open Document Open Filing Apr 7, 2023 Apr 5, 2023
4 Open Document Open Filing Apr 7, 2023 Apr 5, 2023
4 Open Document Open Filing Apr 4, 2023 Mar 31, 2023
4 Open Document Open Filing Apr 4, 2023 Mar 31, 2023
4 Open Document Open Filing Apr 4, 2023 Mar 31, 2023
4 Open Document Open Filing Apr 4, 2023 Mar 31, 2023
4 Open Document Open Filing Apr 4, 2023 Mar 31, 2023
4 Open Document Open Filing Apr 4, 2023 Mar 31, 2023
NT 10-K Open Document Open Filing NT 10-K Apr 3, 2023 Dec 31, 2022 001-14785
8-K Open Document | Data Open Filing 8-K Mar 30, 2023 Mar 30, 2023 001-14785
4 Open Document Open Filing FORM 4 SUBMISSION Mar 21, 2023 Mar 17, 2023
SC 13G/A Open Document Open Filing Feb 14, 2023 005-45371
8-K Open Document Open Filing FORM 8-K RENEWED 5-YEAR CONTRACT Jan 18, 2023 Jan 18, 2023 001-14785
4 Open Document Open Filing FORM 4 Jan 4, 2023 Dec 31, 2022
4 Open Document Open Filing FORM 4 Jan 4, 2023 Dec 31, 2022
4 Open Document Open Filing FORM 4 Jan 4, 2023 Dec 31, 2022
4 Open Document Open Filing FORM 4 Jan 4, 2023 Dec 31, 2022
4 Open Document Open Filing FORM 4 Jan 4, 2023 Dec 31, 2022
4 Open Document Open Filing FORM 4 Jan 4, 2023 Dec 31, 2022
4 Open Document Open Filing FORM 4 Dec 15, 2022 Dec 14, 2022
4 Open Document Open Filing FORM 4 Nov 28, 2022 Nov 23, 2022
4 Open Document Open Filing FORM 4 Nov 22, 2022 Nov 18, 2022
10-Q Open Document | Data Open Filing 10-Q Nov 14, 2022 Sep 30, 2022 001-14785
8-K Open Document | Data Open Filing 8-K Nov 14, 2022 Nov 14, 2022 001-14785
8-K Open Document Open Filing FORM 8-K GSE SYSTEMS, INC DELISTING NOTICE Nov 8, 2022 Nov 8, 2022 001-14785
4 Open Document Open Filing FORM 4 Oct 4, 2022 Sep 30, 2022
4 Open Document Open Filing FORM 4 Oct 4, 2022 Sep 30, 2022
4 Open Document Open Filing FORM 4 Oct 4, 2022 Sep 30, 2022
4 Open Document Open Filing FORM 4 Oct 4, 2022 Sep 30, 2022
4 Open Document Open Filing FORM 4 Oct 4, 2022 Sep 30, 2022
4 Open Document Open Filing FORM 4 Oct 4, 2022 Sep 30, 2022
4 Open Document Open Filing FORM 4 Sep 14, 2022 Sep 14, 2022
8-K Open Document Open Filing GSE INVESTOR PRESENTATION 09-2022 Sep 12, 2022 Sep 12, 2022 001-14785
10-Q Open Document | Data Open Filing 10-Q Aug 15, 2022 Jun 30, 2022 001-14785
8-K Open Document | Data Open Filing 8-K Aug 15, 2022 Aug 15, 2022 001-14785
4 Open Document Open Filing FORM 4 Jul 5, 2022 Jun 30, 2022
4 Open Document Open Filing FORM 4 Jul 1, 2022 Jun 30, 2022
4 Open Document Open Filing FORM 4 Jul 1, 2022 Jun 30, 2022
4 Open Document Open Filing FORM 4 Jul 1, 2022 Jun 30, 2022
4 Open Document Open Filing FORM 4 Jul 1, 2022 Jun 30, 2022
4 Open Document Open Filing FORM 4 Jul 1, 2022 Jun 30, 2022
4 Open Document Open Filing FORM 4 Jul 1, 2022 Jun 30, 2022
8-K Open Document Open Filing GSE SYSTEMS INC - FORM 8-K FOR 2022 ANNUAL MEETING Jun 17, 2022 Jun 17, 2022 001-14785
4 Open Document Open Filing FORM 4 Jun 16, 2022 Jun 14, 2022
4 Open Document Open Filing FORM 4 Jun 16, 2022 Jun 14, 2022
4 Open Document Open Filing FORM 4 Jun 16, 2022 Jun 14, 2022
4 Open Document Open Filing FORM 4 Jun 16, 2022 Jun 14, 2022
4 Open Document Open Filing FORM 4 Jun 16, 2022 Jun 14, 2022
DEFA14A Open Document Open Filing DEFA 14A PROXY SUPPLEMENT Jun 1, 2022 001-14785
8-K Open Document Open Filing FORM 8-K DHG MERGER Jun 1, 2022 Jun 1, 2022 001-14785
4 Open Document Open Filing FORM 4 May 26, 2022 May 24, 2022
EFFECT Open Document Open Filing May 25, 2022 333-264114
CORRESP Open Document Open Filing May 24, 2022
CORRESP Open Document Open Filing May 24, 2022
S-3/A Open Document Open Filing GSE FORM S-3/A May 24, 2022 333-264114
10-Q Open Document | Data Open Filing 10-Q May 16, 2022 Mar 31, 2022 001-14785
8-K Open Document | Data Open Filing 8-K May 16, 2022 May 16, 2022 001-14785
DEFA14A Open Document Open Filing GSE SYSTEMS PROXY NOTICE May 2, 2022 001-14785
DEF 14A Open Document Open Filing GSE DEFINITIVE PROXY STATEMENT 2022 May 2, 2022 May 2, 2022 001-14785
UPLOAD Open Document Open Filing Apr 11, 2022
4 Open Document Open Filing FORM 4 Apr 6, 2022 Apr 5, 2022
4 Open Document Open Filing FORM 4 Apr 6, 2022 Apr 5, 2022
4 Open Document Open Filing FORM 4 Apr 6, 2022 Apr 5, 2022
4 Open Document Open Filing FORM 4 Apr 6, 2022 Apr 5, 2022
4 Open Document Open Filing FORM 4 Apr 6, 2022 Apr 5, 2022
4 Open Document Open Filing FORM 4 Apr 6, 2022 Apr 5, 2022
S-3 Open Document Open Filing GSE SYSTEMS INC - FORM S-3 Apr 4, 2022 333-264114
8-K Open Document Open Filing FORM 8-K INVESTOR PRESENTATION Apr 4, 2022 Apr 4, 2022 001-14785
4 Open Document Open Filing FORM 4 Apr 1, 2022 Mar 31, 2022
4 Open Document Open Filing FORM 4 Apr 1, 2022 Mar 31, 2022
4 Open Document Open Filing FORM 4 Apr 1, 2022 Mar 31, 2022
4 Open Document Open Filing FORM 4 Apr 1, 2022 Mar 31, 2022
4 Open Document Open Filing FORM 4 Apr 1, 2022 Mar 31, 2022
4 Open Document Open Filing FORM 4 Apr 1, 2022 Mar 31, 2022
4 Open Document Open Filing FORM 4 Apr 1, 2022 Mar 31, 2022
8-K/A Open Document | Data Open Filing 8-K/A Apr 1, 2022 Mar 31, 2022 001-14785
10-K Open Document | Data Open Filing 10-K Mar 31, 2022 Dec 31, 2021 001-14785
8-K Open Document | Data Open Filing 8-K Mar 31, 2022 Mar 31, 2022 001-14785
4 Open Document Open Filing FORM 4 Mar 22, 2022 Mar 18, 2022
4 Open Document Open Filing FORM 4 Mar 22, 2022 Mar 18, 2022
4 Open Document Open Filing FORM 4 Mar 16, 2022 Mar 15, 2022
3 Open Document Open Filing FORM 3 Mar 11, 2022 Feb 28, 2022
8-K Open Document Open Filing FORM 8-K Mar 1, 2022 Feb 28, 2022 001-14785
8-K Open Document Open Filing FORM 8-K Feb 28, 2022 Feb 28, 2022 001-14785
SC 13G/A Open Document Open Filing Feb 14, 2022 005-45371
SC 13G/A Open Document Open Filing FORM SC 13G/A Feb 9, 2022 005-45371
4 Open Document Open Filing FORM 4 Jan 4, 2022 Dec 31, 2021
4 Open Document Open Filing FORM 4 Jan 4, 2022 Dec 31, 2021
4 Open Document Open Filing FORM 4 Jan 4, 2022 Dec 31, 2021
4 Open Document Open Filing FORM 4 Jan 4, 2022 Dec 31, 2021
4 Open Document Open Filing FORM 4 Jan 4, 2022 Dec 31, 2021
4 Open Document Open Filing FORM 4 Jan 4, 2022 Dec 31, 2021
4 Open Document Open Filing FORM 4 Jan 4, 2022 Dec 31, 2021
4 Open Document Open Filing FORM 4 Nov 22, 2021 Nov 18, 2021
4 Open Document Open Filing FORM 4 Nov 18, 2021 Nov 16, 2021
10-Q Open Document | Data Open Filing 10-Q Nov 15, 2021 Sep 30, 2021 001-14785
8-K Open Document | Data Open Filing 8-K Nov 15, 2021 Nov 15, 2021 001-14785
4 Open Document Open Filing FORM 4 Oct 4, 2021 Sep 30, 2021
4 Open Document Open Filing FORM 4 Oct 1, 2021 Sep 30, 2021
4 Open Document Open Filing FORM 4 Oct 1, 2021 Sep 30, 2021
4 Open Document Open Filing FORM 4 Oct 1, 2021 Sep 30, 2021
4 Open Document Open Filing FORM 4 Oct 1, 2021 Sep 30, 2021
8-K Open Document Open Filing FORM 8-K GSE SYSTEMS IR PRESENTATION 9-20-2021 Sep 20, 2021 Sep 20, 2021 001-14785
4 Open Document Open Filing FORM 4 Sep 13, 2021 Sep 9, 2021
10-Q Open Document | Data Open Filing 10-Q Aug 16, 2021 Jun 30, 2021 001-14785
8-K Open Document Open Filing 8-K Aug 16, 2021 Aug 16, 2021 001-14785
8-K Open Document Open Filing 8-K Aug 6, 2021 Aug 4, 2021 001-14785
4 Open Document Open Filing FORM 4 Jul 2, 2021 Jun 30, 2021
4 Open Document Open Filing FORM 4 Jul 2, 2021 Jun 30, 2021
4 Open Document Open Filing FORM 4 Jul 2, 2021 Jun 30, 2021
4 Open Document Open Filing FORM 4 Jul 2, 2021 Jun 30, 2021
4 Open Document Open Filing FORM 4 Jul 2, 2021 Jun 30, 2021
4 Open Document Open Filing FORM 4 Jul 2, 2021 Jun 30, 2021
4 Open Document Open Filing FORM 4 Jun 25, 2021 Jun 23, 2021
4 Open Document Open Filing FORM 4 Jun 25, 2021 Jun 23, 2021
4 Open Document Open Filing FORM 4 Jun 25, 2021 Jun 23, 2021
4 Open Document Open Filing FORM 4 Jun 25, 2021 Jun 23, 2021
4 Open Document Open Filing FORM 4 Jun 25, 2021 Jun 23, 2021
4 Open Document Open Filing FORM 4 Jun 25, 2021 Jun 23, 2021
4 Open Document Open Filing FORM 4 Jun 25, 2021 Jun 23, 2021
4 Open Document Open Filing FORM 4 Jun 22, 2021 Jun 18, 2021
4 Open Document Open Filing FORM 4 Jun 22, 2021 Jun 18, 2021
4 Open Document Open Filing FORM 4 Jun 22, 2021 Jun 18, 2021
4 Open Document Open Filing FORM 4 Jun 22, 2021 Jun 18, 2021
4 Open Document Open Filing FORM 4 Jun 22, 2021 Jun 18, 2021
4 Open Document Open Filing FORM 4 Jun 16, 2021 Jun 14, 2021
4 Open Document Open Filing FORM 4 Jun 16, 2021 Jun 14, 2021
4 Open Document Open Filing FORM 4 Jun 16, 2021 Jun 14, 2021
8-K Open Document Open Filing FORM 8-K GSE SYSTEMS, INC 2021 ANNUAL MEETING RESULTS Jun 15, 2021 Jun 15, 2021 001-14785
8-K Open Document Open Filing GSE SYSTEMS INVESTOR PRESENTATION 05-19-2021 May 19, 2021 May 19, 2021 001-14785
10-Q Open Document | Data Open Filing 10-Q May 17, 2021 Mar 31, 2021 001-14785
8-K Open Document Open Filing 8-K May 17, 2021 May 17, 2021 001-14785
4 Open Document Open Filing FORM 4 May 11, 2021 May 11, 2021
DEFA14A Open Document Open Filing GSE SYSTEMS FORM DEFA14A - PROXY NOTICE Apr 30, 2021 001-14785
DEF 14A Open Document Open Filing GSE DEFINITIVE PROXY STATEMENT 043021 Apr 30, 2021 Apr 30, 2021 001-14785
8-K Open Document Open Filing FORM 8-K GSE SYSTEMS 50TH ANNIVERSARY Apr 14, 2021 Apr 14, 2021 001-14785
10-K Open Document | Data Open Filing 10-K Apr 13, 2021 Dec 31, 2020 001-14785
8-K Open Document Open Filing CITIZEN'S BANK NINTH AMENDMENT AND REAFFIRMATION AGREEMENT Apr 2, 2021 Apr 2, 2021 001-14785
8-K Open Document Open Filing 8-K Mar 31, 2021 Dec 31, 2020 001-14785
NT 10-K Open Document Open Filing NT 10-K FY20 12B-25 NOTIFICATION OF LATE FILING Mar 31, 2021 Mar 31, 2021 001-14785
3 Open Document Open Filing FORM 3 Mar 15, 2021 Mar 12, 2021
3 Open Document Open Filing FORM 3 Mar 15, 2021 Mar 12, 2021
8-K Open Document Open Filing J. BARNIE BEASLEY DEPARTURE Feb 26, 2021 Feb 26, 2021 001-14785
8-K Open Document Open Filing FORM 8-K GVP INVESTOR RELATIONS PRESENTATION Feb 24, 2021 Feb 23, 2021 001-14785
SC 13G/A Open Document Open Filing Feb 16, 2021 005-45371
SC 13G/A Open Document Open Filing FORM SC 13G/A Feb 9, 2021 005-45371
SC 13G/A Open Document Open Filing Feb 5, 2021 005-45371
4 Open Document Open Filing FORM 4 Jan 4, 2021 Dec 31, 2020
4 Open Document Open Filing FORM 4 Jan 4, 2021 Dec 31, 2020
4 Open Document Open Filing FORM 4 Dec 10, 2020 Dec 9, 2020
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q Q2 2020 Nov 16, 2020 Sep 30, 2020 001-14785
8-K Open Document Open Filing 8-K Nov 16, 2020 Sep 30, 2020 001-14785
4 Open Document Open Filing FORM 4 Oct 2, 2020 Sep 30, 2020
4 Open Document Open Filing FORM 4 Oct 2, 2020 Sep 30, 2020
8-K Open Document Open Filing FORM 8-K DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS Sep 25, 2020 Sep 21, 2020 001-14785
4 Open Document Open Filing FORM 4 Sep 11, 2020 Sep 10, 2020
4 Open Document Open Filing FORM 4 Sep 11, 2020 Sep 11, 2020
4 Open Document Open Filing FORM 4 Sep 10, 2020 Sep 9, 2020
8-K Open Document Open Filing FORM 8-K - EIGHTH AMENDMENT CITIZENS AGREEMENT Sep 3, 2020 Aug 28, 2020 001-14785
4 Open Document Open Filing FORM 4 Sep 2, 2020 Aug 31, 2020
4 Open Document Open Filing FORM 4 Sep 1, 2020 Aug 31, 2020
4 Open Document Open Filing FORM 4 Sep 1, 2020 Aug 31, 2020
4 Open Document Open Filing FORM 4 Sep 1, 2020 Aug 31, 2020
4 Open Document Open Filing FORM 4 Sep 1, 2020 Aug 31, 2020
3 Open Document Open Filing FORM 3 Aug 31, 2020 Aug 31, 2020
8-K Open Document Open Filing FORM 8-K GSE SYSTEMS 2020 ANNUAL SHAREHOLDERS MEETING RESULTS Aug 31, 2020 Aug 31, 2020 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q Q2 2020 Aug 20, 2020 Jun 30, 2020 001-14785
8-K Open Document Open Filing 8-K Aug 19, 2020 Jun 30, 2020 001-14785
NT 10-Q Open Document Open Filing FORM 12B-25 NOTIFICATION OF LATE FILING 2Q20 Aug 14, 2020 Aug 14, 2020 001-14785
DEF 14A Open Document Open Filing GSE DEFINITIVE PROXY STATEMENT 07-24-2020 Jul 24, 2020 Jul 24, 2020 001-14785
8-K Open Document Open Filing GSE SYSTEMS FORM 8-K 07-24-20 CHANGES IN REGISTRANT'S CERTIFYING ACCOUNTANT Jul 24, 2020 Jul 23, 2020 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q Q1 2020 Jul 23, 2020 Mar 31, 2020 001-14785
8-K Open Document Open Filing 8-K Jul 22, 2020 Mar 31, 2020 001-14785
8-K Open Document Open Filing FORM 8-K - GSE SYSTEMS INC 07-10-20 Jul 10, 2020 Jul 8, 2020 001-14785
4 Open Document Open Filing FORM 4 Jul 7, 2020 Jun 30, 2020
4 Open Document Open Filing FORM 4 Jul 7, 2020 Jun 30, 2020
NT 10-Q Open Document Open Filing FORM 12B-25 FORM 10-Q PERIOD ENDED MARCH 31, 2020 Jun 29, 2020 Jun 29, 2020 001-14785
8-K/A Open Document Open Filing 8-K Jun 16, 2020 Dec 31, 2019 001-14785
8-K Open Document Open Filing FORM 8-K NASDAQ MATTER CLOSED Jun 15, 2020 Jun 12, 2020 001-14785
10-K Open Document | Data Open Filing GSE SYSTEMS, INC. - 2018 - 10-K Jun 11, 2020 Dec 31, 2019 001-14785
8-K Open Document Open Filing FORM 8-K Jun 5, 2020 Jun 1, 2020 001-14785
8-K Open Document Open Filing GSE SYSTEMS, INC FORM 8-K ITEM 8.01 OTHER EVENTS - FORM 10-K FILING May 29, 2020 May 29, 2020 001-14785
8-K Open Document Open Filing FORM 8-K GSE SYSTEMS DEPARTURE OF DIRECTORS & OTHER EVENTS May 22, 2020 May 19, 2020 001-14785
8-K Open Document Open Filing GSE SYSTEMS FORM 8-K 10-Q EXTENSION RE COVID AND FULLER DEPARTURE May 15, 2020 May 12, 2020 001-14785
NT 10-K Open Document Open Filing NT 10-K FY19 12B-25 NOTIFICATION OF LATE FILING May 14, 2020 May 14, 2020 001-14785
8-K Open Document Open Filing FORM 8-K GSE SYSTEMS INC PPP LOAN 04-30-2020 Apr 30, 2020 Apr 24, 2020 001-14785
8-K Open Document Open Filing FORM 8-K - GSE SYSTEMS INC. FORM DEF14A EXTENSION Apr 29, 2020 Apr 29, 2020 001-14785
8-K Open Document Open Filing FORM 8-K CITIZENS BANK SEVENTH AMENDMENT AND REAFFIRMATION AGREEMENT Apr 17, 2020 Apr 17, 2020 001-14785
8-K/A Open Document Open Filing FORM 8-K/A GSE SYSTEMS INC 10-K FILING DATE Apr 15, 2020 Mar 30, 2020 001-14785
8-K Open Document Open Filing 8-K Apr 14, 2020 Dec 31, 2019 001-14785
4 Open Document Open Filing FORM 4 Apr 2, 2020 Mar 31, 2020
4 Open Document Open Filing FORM 4 Apr 2, 2020 Mar 31, 2020
8-K Open Document Open Filing FORM 8-K GSE SYSTEMS 10-K EXTENSION RE COVID-19 Mar 30, 2020 Mar 30, 2020 001-14785
SC 13G/A Open Document Open Filing SCHEDULE 13G HOLDINGS REPORT AMENDMENT Feb 14, 2020 005-45371
SC 13G/A Open Document Open Filing Feb 14, 2020 005-45371
SC 13G/A Open Document Open Filing SC 13G/A Feb 13, 2020 005-45371
SC 13G Open Document Open Filing FORM SC 13G Feb 11, 2020 005-45371
8-K Open Document Open Filing CITIZENS BANK AGREEMENT Jan 8, 2020 Jan 7, 2020 001-14785
8-K Open Document Open Filing FORM 8-K SETTLEMENT AND RELEASE AGREEMENT Jan 6, 2020 Jan 6, 2020 001-14785
4 Open Document Open Filing FORM 4 Jan 3, 2020 Dec 31, 2019
4 Open Document Open Filing FORM 4 Jan 3, 2020 Dec 31, 2019
4 Open Document Open Filing FORM 4 Jan 3, 2020 Dec 31, 2019
8-K Open Document Open Filing FORM 8-K O'CONNOR ELECTED TO GSE BOARD Dec 20, 2019 Dec 17, 2019 001-14785
4 Open Document Open Filing FORM 4 Dec 19, 2019 Dec 17, 2019
3 Open Document Open Filing FORM 3 Dec 19, 2019 Dec 17, 2019
3/A Open Document Open Filing AMENDED INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Dec 11, 2019 Nov 19, 2019
10-Q/A Open Document Open Filing 10-Q/A Dec 10, 2019 Sep 30, 2019 001-14785
3 Open Document Open Filing INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Nov 29, 2019 Nov 19, 2019
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q Q3 2019 Nov 19, 2019 Sep 30, 2019 001-14785
8-K Open Document Open Filing 8-K Nov 19, 2019 Nov 19, 2019 001-14785
NT 10-Q Open Document Open Filing NT 10-Q Nov 14, 2019 Nov 13, 2019 001-14785
4 Open Document Open Filing FORM 4 Oct 1, 2019 Sep 30, 2019
4 Open Document Open Filing FORM 4 Oct 1, 2019 Sep 30, 2019
4 Open Document Open Filing FORM 4 Oct 1, 2019 Sep 30, 2019
4 Open Document Open Filing FORM 4 Oct 1, 2019 Sep 30, 2019
8-K Open Document Open Filing GVP INVESTOR PRESENTATION SEPTEMBER 24, 2019 Sep 24, 2019 Sep 24, 2019 001-14785
RW Open Document Open Filing GSE SYSTEMS-WITHDRAWAL LETTER FOR S-3 Sep 19, 2019 333-233286
8-K Open Document Open Filing DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS, REGULATION FD DISCLOSURE Sep 19, 2019 Sep 18, 2019 001-14785
S-3 Open Document Open Filing S-3 Aug 15, 2019 333-233286
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q Q2 2019 Aug 14, 2019 Jun 30, 2019 001-14785
8-K Open Document Open Filing FORM 8-K - Q2 2019 - EARNINGS RELEASE Aug 14, 2019 Jun 30, 2019 001-14785
4 Open Document Open Filing FORM 4 Jul 2, 2019 Jun 30, 2019
4 Open Document Open Filing FORM 4 Jul 2, 2019 Jun 30, 2019
4 Open Document Open Filing FORM 4 Jul 2, 2019 Jun 30, 2019
4 Open Document Open Filing FORM 4 Jul 2, 2019 Jun 30, 2019
8-K Open Document Open Filing CITIZEN'S BANK AMENDMENT AND REAFFIRMATION AGREEMENT Jul 1, 2019 Jun 28, 2019 001-14785
4 Open Document Open Filing FORM 4 Jun 12, 2019 Jun 11, 2019
4 Open Document Open Filing FORM 4 Jun 12, 2019 Jun 11, 2019
4 Open Document Open Filing FORM 4 Jun 12, 2019 Jun 11, 2019
4 Open Document Open Filing FORM 4 Jun 12, 2019 Jun 11, 2019
8-K Open Document Open Filing FORM 8-K RESULTS GSE SYSTEMS 2019 ANNUAL SHAREHOLDERS MEETING Jun 11, 2019 Jun 11, 2019 001-14785
4 Open Document Open Filing FORM 4 Jun 7, 2019 Jun 5, 2019
DEFA14A Open Document Open Filing GSE DEFINITIVE ADDITIONAL MATERIALS FOR PROXY STATEMENT 2019-05-31 May 31, 2019 001-14785
4 Open Document Open Filing FORM 4 May 22, 2019 May 20, 2019
4 Open Document Open Filing FORM 4 May 17, 2019 May 15, 2019
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q Q1 2019 May 15, 2019 Mar 31, 2019 001-14785
8-K Open Document Open Filing FORM 8-K - Q1 2019 EARNINGS RELEASE May 15, 2019 Mar 31, 2019 001-14785
4 Open Document Open Filing FORM 4 May 10, 2019 May 8, 2019
SC 13G/A Open Document Open Filing SC 13G/A May 8, 2019 005-45371
8-K/A Open Document Open Filing FORM 8-K/A - AMENDMENTS TO 8-K FILED ON FEBRUARY 19, 2019 May 1, 2019 Feb 19, 2019 001-14785
DEFA14A Open Document Open Filing GSE SYSTEMS 2019 PROXY NOTICE Apr 30, 2019 001-14785
DEF 14A Open Document Open Filing GSE SYSTEMS, INC. 2019 PROXY STATEMENT Apr 30, 2019 Apr 30, 2019 001-14785
4 Open Document Open Filing FORM 4 Apr 2, 2019 Mar 31, 2019
4 Open Document Open Filing FORM 4 Apr 2, 2019 Mar 31, 2019
4 Open Document Open Filing FORM 4 Apr 2, 2019 Mar 31, 2019
4 Open Document Open Filing FORM 4 Apr 2, 2019 Mar 31, 2019
4 Open Document Open Filing FORM 4 Apr 2, 2019 Mar 31, 2019
4 Open Document Open Filing FORM 4 Apr 2, 2019 Mar 31, 2019
4 Open Document Open Filing FORM 4 Apr 2, 2019 Mar 31, 2019
10-K Open Document | Data Open Filing GSE SYSTEMS, INC. - 2018 - 10-K Mar 28, 2019 Dec 31, 2018 001-14785
4 Open Document Open Filing FORM 4 Mar 20, 2019 Mar 15, 2019
8-K Open Document Open Filing GVP - CORPORATE PRESENTATION - MARCH 2019 Mar 18, 2019 Mar 18, 2019 001-14785
8-K Open Document Open Filing FORM 8-K: EARNINGS RELEASE - FY 2018 Mar 14, 2019 Dec 31, 2018 001-14785
8-K Open Document Open Filing GSE SYSTEMS ACQUIRES DP ENGINEERING Feb 19, 2019 Feb 19, 2019 001-14785
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2019 005-45371
SC 13G/A Open Document Open Filing SC 13G/A Feb 14, 2019 005-45371
SC 13G/A Open Document Open Filing SCHEDULE 13G HOLDINGS REPORT AMENDMENT Feb 14, 2019 005-45371
4 Open Document Open Filing FORM 4 Feb 8, 2019 Feb 7, 2019
4 Open Document Open Filing FORM 4 Feb 8, 2019 Feb 7, 2019
4 Open Document Open Filing FORM 4 Feb 8, 2019 Feb 7, 2019
4 Open Document Open Filing FORM 4 Feb 8, 2019 Feb 7, 2019
4 Open Document Open Filing FORM 4 Jan 11, 2019 Jan 11, 2019
4 Open Document Open Filing FORM 4 Jan 11, 2019 Jan 11, 2019
4 Open Document Open Filing FORM 4 Jan 11, 2019 Jan 11, 2019
8-K Open Document Open Filing AMENDMENTS TO CERTAIN AGREEMENTS WITH EXECUTIVE OFFICERS Jan 11, 2019 Jan 11, 2019 001-14785
4 Open Document Open Filing FORM 4 Jan 3, 2019 Dec 31, 2018
4 Open Document Open Filing FORM 4 Jan 3, 2019 Jan 1, 2019
4 Open Document Open Filing FORM 4 Jan 3, 2019 Dec 31, 2018
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q Q3 2018 Nov 14, 2018 Sep 30, 2018 001-14785
8-K Open Document Open Filing FORM 8-K - Q3 2018 - EARNINGS RELEASE Nov 14, 2018 Sep 30, 2018 001-14785
4 Open Document Open Filing FORM 4 Oct 2, 2018 Sep 30, 2018
4 Open Document Open Filing FORM 4 Oct 2, 2018 Sep 30, 2018
4 Open Document Open Filing FORM 4 Oct 2, 2018 Sep 30, 2018
4 Open Document Open Filing FORM 4 Oct 2, 2018 Sep 30, 2018
4 Open Document Open Filing FORM 4 Oct 2, 2018 Sep 30, 2018
4 Open Document Open Filing FORM 4 Oct 2, 2018 Sep 30, 2018
4 Open Document Open Filing FORM 4 Sep 14, 2018 Sep 13, 2018
8-K Open Document Open Filing GVP - CORPORATE PRESENTATION - AUGUST 2018 Aug 28, 2018 Aug 27, 2018 001-14785
8-K Open Document Open Filing FORM 8-K GSE SYSTEMS 2Q18 EARNINGS CALL TRANSCRIPT Aug 17, 2018 Aug 17, 2018 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q Q2 2018 Aug 14, 2018 Jun 30, 2018 001-14785
8-K Open Document Open Filing FORM 8-K - Q2 2018 - EARNINGS RELEASE Aug 14, 2018 Jun 30, 2018 001-14785
8-K/A Open Document Open Filing FORM 8-K/A - AMENDMENTS TO 8-K FILED ON MAY 14, 2018 Jul 24, 2018 May 11, 2018 001-14785
4 Open Document Open Filing FORM 4 Jul 2, 2018 Jun 30, 2018
4 Open Document Open Filing FORM 4 Jul 2, 2018 Jun 30, 2018
4 Open Document Open Filing FORM 4 Jul 2, 2018 Jun 30, 2018
4 Open Document Open Filing FORM 4 Jul 2, 2018 Jun 30, 2018
4 Open Document Open Filing FORM 4 Jul 2, 2018 Jun 30, 2018
4 Open Document Open Filing FORM 4 Jul 2, 2018 Jun 30, 2018
8-K Open Document Open Filing GSE SYSTEMS INC 2018 ANNUAL MEETING RESULTS, AMENDMENTS TO ARTICLES OF INC, IR P Jun 15, 2018 Jun 12, 2018 001-14785
4 Open Document Open Filing FORM 4 Jun 13, 2018 Jun 12, 2018
3 Open Document Open Filing FORM 3 Jun 13, 2018 Jun 12, 2018
4 Open Document Open Filing FORM 4 Jun 13, 2018 Jun 12, 2018
4 Open Document Open Filing FORM 4 Jun 13, 2018 Jun 12, 2018
4 Open Document Open Filing FORM 4 Jun 13, 2018 Jun 12, 2018
DEFA14A Open Document Open Filing 2018 PROXY CARD Jun 11, 2018 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q Q1 2018 May 15, 2018 Mar 31, 2018 001-14785
8-K Open Document Open Filing FORM 8-K - Q1 2018 EARNINGS RELEASE May 15, 2018 Mar 31, 2018 001-14785
8-K Open Document Open Filing GSE SYSTEMS, INC. TRUE NORTH AND CREDIT AGREEMENTS May 14, 2018 May 14, 2018 001-14785
DEFA14A Open Document Open Filing GSE SYSTEMS 2018 PROXY NOTICE Apr 30, 2018 001-14785
DEF 14A Open Document Open Filing GSE SYSTEMS, INC. 2018 PROXY STATEMENT Apr 30, 2018 Apr 30, 2018 001-14785
CERT Open Document Open Filing Apr 27, 2018 001-14785
25 Open Document Open Filing NOTIFICATION OF REMOVAL FROM LISTING AND/OR REGISTRATION UNDER SECTION 12(B) Apr 27, 2018 001-14785
8-A12B Open Document Open Filing FORM 8-A GSE SYSTEMS, INC. NASDAQ REGISTRATION 12(B) Apr 27, 2018 001-14785
8-K Open Document Open Filing GSE SYSTEMS, INC. TO BEGIN TRADING ON NASDAQ CAPITAL MARKET Apr 19, 2018 Apr 19, 2018 001-14785
PRE 14A Open Document Open Filing GSE SYSTEMS, INC. PRELIMINARY PROXY STATEMENT Apr 16, 2018 Jun 12, 2018 001-14785
4 Open Document Open Filing FORM 4 Apr 2, 2018 Mar 31, 2018
4 Open Document Open Filing FORM 4 Apr 2, 2018 Mar 31, 2018
4 Open Document Open Filing FORM 4 Apr 2, 2018 Mar 31, 2018
4 Open Document Open Filing FORM 4 Apr 2, 2018 Mar 31, 2018
4 Open Document Open Filing FORM 4 Apr 2, 2018 Mar 31, 2018
4 Open Document Open Filing FORM 4 Apr 2, 2018 Mar 31, 2018
4 Open Document Open Filing FORM 4 Apr 2, 2018 Mar 31, 2018
8-K Open Document Open Filing GSE SYSTEMS, INC. FORM 8-K QUINN AND LEWIS DEPARTURE Mar 23, 2018 Mar 23, 2018 001-14785
3 Open Document Open Filing FORM 3 Mar 23, 2018 Mar 20, 2018
10-K Open Document | Data Open Filing GSE SYSTEMS, INC. - 2017 - 10-K Mar 16, 2018 Dec 31, 2017 001-14785
8-K Open Document Open Filing FORM 8-K: EARNINGS RELEASE - FY 2017 Mar 15, 2018 Dec 31, 2017 001-14785
4 Open Document Open Filing FORM 4 Mar 2, 2018 Feb 28, 2018
SC 13G/A Open Document Open Filing Feb 14, 2018 005-45371
SC 13G/A Open Document Open Filing 13G/A Feb 13, 2018 005-45371
SC 13G/A Open Document Open Filing SC 13G/A Feb 13, 2018 005-45371
4 Open Document Open Filing FORM 4 Jan 3, 2018 Dec 31, 2017
4 Open Document Open Filing FORM 4 Jan 3, 2018 Dec 31, 2017
4 Open Document Open Filing FORM 4 Jan 3, 2018 Dec 31, 2017
4 Open Document Open Filing FORM 4 Jan 3, 2018 Dec 31, 2017
4 Open Document Open Filing FORM 4 Jan 3, 2018 Dec 31, 2017
4 Open Document Open Filing FORM 4 Jan 3, 2018 Dec 31, 2017
4 Open Document Open Filing FORM 4 Jan 3, 2018 Jan 1, 2018
4 Open Document Open Filing FORM 4 Jan 3, 2018 Jan 1, 2018
8-K Open Document Open Filing INTERNATIONAL RESTRUCTURING Dec 27, 2017 Dec 27, 2017 001-14785
8-K/A Open Document Open Filing Nov 30, 2017 Sep 20, 2017 001-14785
8-K Open Document Open Filing FORM 8-K GVP UPDATED INVESTOR PRESENTATION DATED NOVEMBER 29, 2017 Nov 29, 2017 Nov 29, 2017 001-14785
4 Open Document Open Filing FORM 4 Nov 16, 2017 Nov 15, 2017
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 1Q17 Nov 14, 2017 Sep 30, 2017 001-14785
8-K Open Document Open Filing EARNINGS RELEASE - Q3 2017 Nov 14, 2017 Sep 30, 2017 001-14785
4 Open Document Open Filing FORM 4 Oct 2, 2017 Sep 30, 2017
4 Open Document Open Filing FORM 4 Oct 2, 2017 Sep 30, 2017
4 Open Document Open Filing FORM 4 Oct 2, 2017 Sep 30, 2017
4 Open Document Open Filing FORM 4 Oct 2, 2017 Sep 30, 2017
4 Open Document Open Filing FORM 4 Oct 2, 2017 Sep 30, 2017
4 Open Document Open Filing FORM 4 Oct 2, 2017 Sep 30, 2017
8-K Open Document Open Filing ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT Sep 20, 2017 Sep 20, 2017 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 1Q17 Aug 14, 2017 Jun 30, 2017 001-14785
8-K Open Document Open Filing EARNINGS RELEASE - Q2 2017 Aug 14, 2017 Jun 30, 2017 001-14785
4 Open Document Open Filing FORM 4 Jul 5, 2017 Jun 30, 2017
4 Open Document Open Filing FORM 4 Jul 5, 2017 Jun 30, 2017
4 Open Document Open Filing FORM 4 Jul 5, 2017 Jun 30, 2017
4 Open Document Open Filing FORM 4 Jul 5, 2017 Jun 30, 2017
4 Open Document Open Filing FORM 4 Jul 5, 2017 Jun 30, 2017
8-K Open Document Open Filing GSE FORM 8-K RESULTS OF ANNUAL MEETING 06-12-2017 Jun 16, 2017 Jun 12, 2017 001-14785
4 Open Document Open Filing FORM 4 Jun 14, 2017 Jun 12, 2017
3 Open Document Open Filing FORM 3 Jun 14, 2017 Jun 12, 2017
4 Open Document Open Filing FORM 4 Jun 14, 2017 Jun 12, 2017
4 Open Document Open Filing FORM 4 Jun 14, 2017 Jun 12, 2017
4 Open Document Open Filing FORM 4 Jun 13, 2017 Jun 12, 2017
4 Open Document Open Filing FORM 4 Jun 13, 2017 Jun 12, 2017
4 Open Document Open Filing FORM 4 Jun 13, 2017 Jun 12, 2017
4 Open Document Open Filing FORM 4 Jun 9, 2017 Jun 7, 2017
4 Open Document Open Filing FORM 4 Jun 7, 2017 Jun 7, 2017
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 1Q17 May 15, 2017 Mar 31, 2017 001-14785
8-K Open Document Open Filing GSE SYSTEMS FORM 8-K 1Q17 RESULTS OF OPERATIONS May 15, 2017 May 15, 2017 001-14785
DEFA14A Open Document Open Filing GSE SYSTEMS, INC 2017 PROXY NOTICE Apr 25, 2017 001-14785
DEF 14A Open Document Open Filing GSE SYSTEMS 2017 PROXY STATEMENT Apr 25, 2017 Apr 21, 2017 001-14785
4 Open Document Open Filing FORM 4 Apr 4, 2017 Mar 31, 2017
4 Open Document Open Filing FORM 4 Apr 4, 2017 Mar 31, 2017
4 Open Document Open Filing FORM 4 Apr 4, 2017 Mar 31, 2017
4 Open Document Open Filing FORM 4 Apr 4, 2017 Mar 31, 2017
4 Open Document Open Filing FORM 4 Apr 4, 2017 Mar 31, 2017
SC 13G/A Open Document Open Filing AMENDMENT NO. 6 TO SCHEDULE 13G Mar 31, 2017 005-45371
10-K Open Document | Data Open Filing GSE SYSTEMS, INC. - 2015 - 10-K Mar 28, 2017 Dec 31, 2016 001-14785
8-K Open Document Open Filing FORM 8-K GVP INVESTOR PRESENTATION MARCH 14, 2017 Mar 13, 2017 Mar 13, 2017 001-14785
8-K Open Document Open Filing GVP FORM 8-K FY16 EARNINGS Mar 9, 2017 Mar 9, 2017 001-14785
SC 13G/A Open Document Open Filing SC 13G/A Feb 27, 2017 005-45371
SC 13G Open Document Open Filing Feb 14, 2017 005-45371
SC 13G/A Open Document Open Filing SCHEDULE 13G/A Feb 10, 2017 005-45371
4 Open Document Open Filing FORM 4 Jan 25, 2017 Jan 23, 2017
4 Open Document Open Filing FORM 4 Jan 25, 2017 Jan 23, 2017
4 Open Document Open Filing FORM 4 Jan 25, 2017 Jan 23, 2017
4 Open Document Open Filing FORM 4 Jan 25, 2017 Jan 23, 2017
4 Open Document Open Filing FORM 4 Jan 25, 2017 Jan 23, 2017
4 Open Document Open Filing FORM 4 Jan 25, 2017 Jan 23, 2017
4 Open Document Open Filing FORM 4 Jan 4, 2017 Jan 1, 2017
4 Open Document Open Filing FORM 4 Jan 4, 2017 Jan 1, 2017
4 Open Document Open Filing FORM 4 Jan 4, 2017 Jan 1, 2017
4 Open Document Open Filing FORM 4 Jan 4, 2017 Jan 1, 2017
4 Open Document Open Filing FORM 4 Jan 4, 2017 Jan 1, 2017
4 Open Document Open Filing FORM 4 Jan 4, 2017 Jan 1, 2017
4 Open Document Open Filing FORM 4 Jan 4, 2017 Jan 1, 2017
4 Open Document Open Filing FORM 4 Jan 4, 2017 Jan 1, 2017
4 Open Document Open Filing FORM 4 Jan 4, 2017 Dec 31, 2016
8-K Open Document Open Filing GSE SYSTEMS NEW CREDIT FACILITY FORM 8-K Jan 4, 2017 Jan 4, 2017 001-14785
UPLOAD Open Document Open Filing Jan 3, 2017
CORRESP Open Document Open Filing Dec 22, 2016
4 Open Document Open Filing FORM 4 Dec 14, 2016 Dec 12, 2016
8-K Open Document Open Filing GSE SYSTEMS, INC. FORM 8-K DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS; ELECTION Dec 14, 2016 Dec 8, 2016 001-14785
4 Open Document Open Filing FORM 4 Dec 13, 2016 Dec 13, 2016
4 Open Document Open Filing FORM 4 Dec 12, 2016 Dec 8, 2016
4 Open Document Open Filing FORM 4 Dec 12, 2016 Dec 8, 2016
UPLOAD Open Document Open Filing Dec 8, 2016
8-K Open Document Open Filing GVP FORM 8-K 3Q16 FINANCIAL RESULTS PRESS RELEASE Nov 16, 2016 Nov 16, 2016 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 1Q16 Nov 14, 2016 Sep 30, 2016 001-14785
SC 13G Open Document Open Filing SCHEDULE 13G Oct 27, 2016 005-45371
4 Open Document Open Filing FORM 4 Oct 4, 2016 Sep 30, 2016
4 Open Document Open Filing FORM 4 Sep 21, 2016 Sep 19, 2016
4 Open Document Open Filing FORM 4 Sep 21, 2016 Sep 19, 2016
4 Open Document Open Filing FORM 4 Sep 21, 2016 Sep 19, 2016
4 Open Document Open Filing FORM 4 Sep 21, 2016 Sep 19, 2016
4 Open Document Open Filing FORM 4 Sep 21, 2016 Sep 19, 2016
4 Open Document Open Filing FORM 4 Sep 21, 2016 Sep 19, 2016
4 Open Document Open Filing FORM 4 Sep 21, 2016 Sep 19, 2016
4 Open Document Open Filing FORM 4 Sep 21, 2016 Sep 19, 2016
4 Open Document Open Filing FORM 4 Sep 21, 2016 Sep 19, 2016
3 Open Document Open Filing FORM 3 Sep 21, 2016 Sep 14, 2016
4/A Open Document Open Filing FORM 4/A Sep 21, 2016 Sep 2, 2016
4 Open Document Open Filing FORM 4 Sep 20, 2016 Sep 2, 2016
8-K Open Document Open Filing AMENDMENTS TO ARTICLES OF INCORPORATION OR BYLAWS; CHANGE IN FISCAL YEAR. Sep 16, 2016 Sep 16, 2016 001-14785
8-K Open Document Open Filing FORM 8-K GVP INVESTOR PRESENTATION SEPTEMBER 15, 2016 Sep 15, 2016 Sep 13, 2016 001-14785
8-K Open Document Open Filing FORM 8-K APPOINTMENT OF CERTAIN DIRECTORS OR OFFICERS Sep 15, 2016 Sep 14, 2016 001-14785
4/A Open Document Open Filing FORM 4/A Sep 2, 2016 Jun 30, 2016
8-K Open Document Open Filing FORM 8-K SORRELLS AGREEMENT Aug 19, 2016 Aug 17, 2016 001-14785
4 Open Document Open Filing FORM 4 Aug 17, 2016 Aug 15, 2016
8-K Open Document Open Filing GVP FORM 8-K 2Q16 EARNINGS Aug 15, 2016 Aug 15, 2016 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 1Q16 Aug 15, 2016 Jun 30, 2016 001-14785
3 Open Document Open Filing FORM 3 Aug 8, 2016 Aug 8, 2016
8-K Open Document Open Filing FORM 8-K APPOINTMENT OF CERTAIN DIRECTORS OR OFFICERS Aug 8, 2016 Aug 8, 2016 001-14785
4 Open Document Open Filing FORM 4 Jul 5, 2016 Jul 1, 2016
3 Open Document Open Filing FORM 3 Jul 5, 2016 Jul 1, 2016
8-K Open Document Open Filing DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS; ELECTION OF DIRECTORS; APPOINTMENT O Jul 5, 2016 Jul 5, 2016 001-14785
4 Open Document Open Filing FORM 4 Jul 1, 2016 Jul 1, 2016
4 Open Document Open Filing FORM 4 Jul 1, 2016 Jul 1, 2016
4 Open Document Open Filing FORM 4 Jul 1, 2016 Jul 1, 2016
4 Open Document Open Filing FORM 4 Jul 1, 2016 Jul 1, 2016
4 Open Document Open Filing FORM 4 Jul 1, 2016 Jul 1, 2016
4 Open Document Open Filing FORM 4 Jul 1, 2016 Jul 1, 2016
4 Open Document Open Filing FORM 4 Jul 1, 2016 Jul 1, 2016
4 Open Document Open Filing FORM 4 Jul 1, 2016 Jul 1, 2016
8-K Open Document Open Filing DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS; ELECTION OF DIRECTORS; APPOINTMENT O Jul 1, 2016 Jul 1, 2016 001-14785
4 Open Document Open Filing FORM 4 Jun 30, 2016 Jun 30, 2016
S-8 Open Document Open Filing GSE SYSTEMS 2016 REGISTRATION STATEMENT ADDITIONAL SHARES FOR 1995 PLAN Jun 24, 2016 333-212241
8-K Open Document | Data Open Filing GSE SYSTEMS JOINS RUSSELL MICROCAP INDEX Jun 16, 2016 Jun 16, 2016 001-14785
4 Open Document Open Filing FORM 4 Jun 15, 2016 Jun 14, 2016
8-K Open Document Open Filing FORM 8-K RESULTS OF GSE SYSTEMS, INC. 2016 ANNUAL SHAREHOLDERS MEETING Jun 10, 2016 Jun 7, 2016 001-14785
4 Open Document Open Filing FORM 4 Jun 1, 2016 May 27, 2016
4/A Open Document Open Filing FORM 4/A May 27, 2016 May 25, 2016
4 Open Document Open Filing FORM 4 May 27, 2016 Mar 31, 2016
DEFA14A Open Document Open Filing SUPPLEMENT TO THE PROXY STATEMENT FOR THE ANNUAL MEETING OF STOCKHOLDERS TO BE H May 27, 2016 001-14785
4/A Open Document Open Filing FORM 4/A May 27, 2016 May 27, 2016
4/A Open Document Open Filing FORM 4/A May 27, 2016 May 23, 2016
4 Open Document Open Filing FORM 4 May 26, 2016 May 25, 2016
4 Open Document Open Filing FORM 4 May 26, 2016 May 24, 2016
4 Open Document Open Filing FORM 4 May 25, 2016 May 23, 2016
4 Open Document Open Filing FORM 4 May 23, 2016 May 20, 2016
8-K Open Document | Data Open Filing GSE SYSTEMS FORM 8-K 1Q16 RESULTS OF OPERATIONS May 16, 2016 May 16, 2016 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 1Q16 May 16, 2016 Mar 31, 2016 001-14785
DEFA14A Open Document Open Filing GSE SYSTEMS 2016 DEFA14A Apr 27, 2016 001-14785
DEF 14A Open Document Open Filing GSE SYSTEMS 2016 PROXY STATEMENT Apr 27, 2016 Dec 31, 2015 001-14785
10-K Open Document | Data Open Filing GSE SYSTEMS, INC. - 2015 - 10-K Mar 25, 2016 Dec 31, 2015 001-14785
3 Open Document Open Filing FORM 3 Mar 24, 2016 Mar 22, 2016
4 Open Document Open Filing FORM 4 Mar 22, 2016 Mar 21, 2016
3 Open Document Open Filing FORM 3 Mar 22, 2016 Mar 21, 2016
8-K Open Document | Data Open Filing GVP FORM 8-K PRESS RELEASE Mar 22, 2016 Mar 22, 2016 001-14785
8-K Open Document | Data Open Filing GVP FORM 8-K CONTRACT PRESS RELEASE Mar 17, 2016 Mar 17, 2016 001-14785
8-K Open Document | Data Open Filing GSE SYSTEMS, INC. 12-21-2015 FINANCIAL RESULTS PRESS RELEASE Mar 15, 2016 Mar 15, 2016 001-14785
4 Open Document Open Filing FORM 4 Mar 3, 2016 Mar 1, 2016
4 Open Document Open Filing FORM 4 Mar 3, 2016 Mar 1, 2016
4 Open Document Open Filing FORM 4 Mar 3, 2016 Mar 1, 2016
4 Open Document Open Filing FORM 4 Mar 3, 2016 Mar 1, 2016
SC 13G/A Open Document Open Filing SC 13G/A NO.5 Feb 10, 2016 005-45371
4 Open Document Open Filing FORM 4 Feb 5, 2016 Feb 1, 2016
3 Open Document Open Filing FORM 3 Feb 5, 2016 Feb 1, 2016
8-K Open Document Open Filing GVP LOUDERMILK - FORM 8-K 012816 Jan 28, 2016 Jan 28, 2016 001-14785
4 Open Document Open Filing FORM 4 Jan 26, 2016 Jan 22, 2016
SC 13D/A Open Document Open Filing SCHEDULE 13D AMENDMENT NO. 1 Jan 26, 2016 005-45371
SC 13D Open Document Open Filing SC 13D Dec 17, 2015 005-45371
4 Open Document Open Filing FORM 4 Dec 16, 2015 Dec 14, 2015
4 Open Document Open Filing FORM 4 Dec 16, 2015 Dec 14, 2015
4 Open Document Open Filing FORM 4 Dec 14, 2015 Dec 11, 2015
4/A Open Document Open Filing FORM 4/A Dec 14, 2015 Dec 2, 2015
4/A Open Document Open Filing FORM 4/A Dec 14, 2015 Dec 2, 2015
4/A Open Document Open Filing FORM 4/A Dec 14, 2015 Nov 20, 2015
4/A Open Document Open Filing FORM 4/A Dec 14, 2015 Nov 20, 2015
4/A Open Document Open Filing FORM 4/A Dec 14, 2015 Nov 25, 2015
4 Open Document Open Filing FORM 4 Dec 4, 2015 Dec 2, 2015
4 Open Document Open Filing FORM 4 Dec 4, 2015 Dec 2, 2015
3 Open Document Open Filing FORM 3 Dec 4, 2015 Jun 3, 2015
4 Open Document Open Filing FORM 4 Dec 3, 2015 Dec 1, 2015
3 Open Document Open Filing FORM 3 Dec 3, 2015 Dec 1, 2015
4 Open Document Open Filing FORM 4 Nov 30, 2015 Nov 25, 2015
4 Open Document Open Filing FORM 4 Nov 24, 2015 Nov 20, 2015
4 Open Document Open Filing FORM 4 Nov 24, 2015 Nov 20, 2015
SC 13D/A Open Document Open Filing SC 13D/A Nov 24, 2015 005-45371
4 Open Document Open Filing FORM 4 Nov 19, 2015 Nov 17, 2015
8-K Open Document Open Filing GSE SYSTEMS FORM 8-K 3Q15 FINANCIAL RESULTS Nov 12, 2015 Nov 12, 2015 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 3Q15 Nov 12, 2015 Sep 30, 2015 001-14785
4 Open Document Open Filing FORM 4 Nov 6, 2015 Oct 30, 2015
4 Open Document Open Filing FORM 4 Nov 6, 2015 Oct 30, 2015
8-K Open Document Open Filing DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS Nov 4, 2015 Nov 4, 2015 001-14785
8-K Open Document Open Filing GVP FORM 8-K DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS Oct 1, 2015 Oct 1, 2015 001-14785
8-K Open Document Open Filing FORM 8-K GVP RESTRUCTURING Sep 28, 2015 Sep 22, 2015 001-14785
4 Open Document Open Filing FORM 4 Aug 25, 2015 Aug 25, 2015
8-K Open Document Open Filing GVP SORRELLS - FORM 8-K 082515 Aug 25, 2015 Aug 25, 2015 001-14785
8-K Open Document Open Filing GSE SYSTEMS FORM 8-K 2Q15 FINANCIAL RESULTS Aug 13, 2015 Aug 13, 2015 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 2Q15 Aug 13, 2015 Jun 30, 2015 001-14785
3 Open Document Open Filing FORM 3 Aug 6, 2015 Aug 3, 2015
4 Open Document Open Filing FORM 4 Aug 5, 2015 Aug 3, 2015
8-K Open Document Open Filing FORM 8-K APPOINTMENT OF KYLE LOUDERMILK Jul 31, 2015 Jul 31, 2015 001-14785
8-K Open Document Open Filing GSE 060315 FORM 8-K RESULTS OF ANNUAL SHAREHOLDERS MEETING Jun 8, 2015 Jun 3, 2015 001-14785
SC 13D/A Open Document Open Filing SC 13D/A May 27, 2015 005-45371
8-K Open Document Open Filing May 14, 2015 May 14, 2015 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 1Q15 May 14, 2015 Mar 31, 2015 001-14785
DEF 14A Open Document Open Filing GSE SYSTEMS 2015 PROXY STATEMENT Apr 22, 2015 Dec 31, 2014 001-14785
8-K Open Document Open Filing Apr 13, 2015 Apr 13, 2015 001-14785
8-K Open Document Open Filing GSE 12-31-2014 EARNINGS AND EMPLOYMENT AGREEMENTS Mar 19, 2015 Mar 18, 2015 001-14785
10-K Open Document | Data Open Filing GSE SYSTEMS, INC. - 2014 - 10-K Mar 19, 2015 Dec 31, 2014 001-14785
4 Open Document Open Filing FORM 4 Mar 4, 2015 Mar 2, 2015
4 Open Document Open Filing FORM 4 Mar 4, 2015 Mar 2, 2015
4 Open Document Open Filing FORM 4 Mar 4, 2015 Mar 2, 2015
4 Open Document Open Filing FORM 4 Mar 4, 2015 Mar 2, 2015
4 Open Document Open Filing FORM 4 Mar 4, 2015 Mar 2, 2015
SC 13G/A Open Document Open Filing SCHEDULE 13G AMENDMENT NO. 4 Feb 17, 2015 005-45371
SC 13G/A Open Document Open Filing SC 13G/A Feb 9, 2015 005-45371
8-K Open Document Open Filing AMENDMENTS TO ARTICLES OF INCORPORATION OR BYLAWS; CHANGE IN FISCAL YEAR Feb 4, 2015 Feb 4, 2015 001-14785
SC 13G Open Document Open Filing NONE Jan 30, 2015 005-45371
8-K/A Open Document Open Filing FORM 8-K/A Jan 29, 2015 Nov 14, 2014 001-14785
SC 13G/A Open Document Open Filing MARK LEONARD SCHEDULE 13G AMENDMENT NO 1 Jan 6, 2015 005-45371
SC 13D Open Document Open Filing SC 13D Dec 30, 2014 005-45371
SC 13G/A Open Document Open Filing SC 13G/A Dec 3, 2014 005-45371
8-K Open Document Open Filing GSE SYSTEMS FORM 8-K 3Q14 Nov 17, 2014 Nov 14, 2014 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 2Q14 Nov 14, 2014 Sep 30, 2014 001-14785
SC 13G Open Document Open Filing SCHEDULE 13G - MARK LEONARD Aug 18, 2014 005-45371
8-K Open Document Open Filing GSE SYSTEMS FORM 8-K 2Q14 RESULTS PRESS RELEASE Aug 15, 2014 Aug 15, 2014 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 2Q14 Aug 14, 2014 Jun 30, 2014 001-14785
SC 13G Open Document Open Filing SC 13G Jul 23, 2014 005-45371
SC 13G/A Open Document Open Filing JULY 11, 2014 Jul 11, 2014 005-45371
SC 13G Open Document Open Filing NONE Jul 11, 2014 005-45371
8-K Open Document Open Filing FORM 8-K 1Q14 PRESS RELEASE May 15, 2014 Mar 31, 2014 001-14785
10-Q Open Document | Data Open Filing GSE SYSTEMS INC FORM 10-Q 1Q14 May 15, 2014 Mar 31, 2014 001-14785
DEF 14A Open Document Open Filing GSE SYSTEMS 2014 PROXY STATEMENT Apr 29, 2014 Dec 31, 2013 001-14785
8-K Open Document Open Filing GSE SYSTEMS FORM 8-K Mar 26, 2014 Mar 26, 2014 001-14785
10-K Open Document | Data Open Filing Mar 26, 2014 Dec 31, 2013 001-14785
4 Open Document Open Filing FORM 4 Mar 12, 2014 Mar 3, 2014
4 Open Document Open Filing FORM 4 Mar 12, 2014 Mar 3, 2014
4 Open Document Open Filing FORM 4 Mar 12, 2014 Mar 3, 2014
4 Open Document Open Filing FORM 4 Mar 12, 2014 Mar 3, 2014
4 Open Document Open Filing FORM 4 Mar 12, 2014 Mar 3, 2014
SC 13G/A Open Document Open Filing SCHEDULE 13G AMENDMENT NO. 3 Feb 14, 2014 005-45371
SC 13G/A Open Document Open Filing FORM SC 13G/A Feb 12, 2014 005-45371
SC 13G/A Open Document Open Filing FEBRUARY 4, 2014 Feb 6, 2014 005-45371