Myseum, Inc.

Symbol
MYSE, MYSEW on Nasdaq
Business address
65 Church Street, Suite 230, New Brunswick, NJ, 08901
State of incorporation
NV
Fiscal year end
31 December
Former names
DatChat, Inc. (to 06 Aug 2025), Dat Chat, Inc (to 07 Dec 2016)
Get insider transactions for this issuer
Myseum, Inc. has filed 206 SEC EDGAR filings since 28 Jul 2015

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
8-K Open Document | Data Open Filing CURRENT REPORT 18 Dec 2025 17 Dec 2025 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 16 Dec 2025 11 Dec 2025 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 04 Dec 2025 04 Dec 2025 001-40729
EFFECT Open Document Open Filing 03 Dec 2025 333-291818
S-3 Open Document | Data Open Filing REGISTRATION STATEMENT 26 Nov 2025 333-291818
10-Q Open Document | Data Open Filing QUARTERLY REPORT 13 Nov 2025 30 Sep 2025 001-40729
S-8 Open Document | Data Open Filing REGISTRATION STATEMENT 13 Nov 2025 333-291501
8-K Open Document | Data Open Filing CURRENT REPORT 04 Nov 2025 04 Nov 2025 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 16 Oct 2025 16 Oct 2025 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 14 Oct 2025 13 Oct 2025 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 08 Oct 2025 08 Oct 2025 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 02 Oct 2025 01 Oct 2025 001-40729
4 Open Document Open Filing 19 Sep 2025 19 Sep 2025
4 Open Document Open Filing 03 Sep 2025 03 Sep 2025
4 Open Document Open Filing 02 Sep 2025 02 Sep 2025
4 Open Document Open Filing 28 Aug 2025 28 Aug 2025
4 Open Document Open Filing 19 Aug 2025 18 Aug 2025
4 Open Document Open Filing 19 Aug 2025 18 Aug 2025
4 Open Document Open Filing 19 Aug 2025 18 Aug 2025
4 Open Document Open Filing 19 Aug 2025 18 Aug 2025
4 Open Document Open Filing 19 Aug 2025 18 Aug 2025
10-Q Open Document | Data Open Filing QUARTERLY REPORT 14 Aug 2025 30 Jun 2025 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 08 Aug 2025 07 Aug 2025 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 06 Aug 2025 06 Aug 2025 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 31 Jul 2025 28 Jul 2025 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 20 Jun 2025 17 Jun 2025 001-40729
ARS Open Document Open Filing ANNUAL REPORT 16 Jun 2025 31 Dec 2024 001-40729
DEFA14A Open Document Open Filing DEFINITIVE ADDITIONAL MATERIALS 16 Jun 2025 001-40729
DEF 14A Open Document | Data Open Filing PROXY STATEMENT 16 Jun 2025 06 Aug 2025 001-40729
8-K/A Open Document | Data Open Filing AMENDMENT NO. 1 TO FORM 8-K 03 Jun 2025 30 May 2025 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 29 May 2025 23 May 2025 001-40729
10-Q Open Document | Data Open Filing QUARTERLY REPORT 15 May 2025 31 Mar 2025 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 21 Apr 2025 16 Apr 2025 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 03 Apr 2025 01 Apr 2025 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 31 Mar 2025 25 Mar 2025 001-40729
10-K Open Document | Data Open Filing ANNUAL REPORT 31 Mar 2025 31 Dec 2024 001-40729
8-K Open Document | Data Open Filing FORM 8-K 13 Feb 2025 11 Feb 2025 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 10 Feb 2025 10 Feb 2025 001-40729
424B5 Open Document Open Filing PROSPECTUS SUPPLEMENT 10 Feb 2025 333-268058
4 Open Document Open Filing 16 Jan 2025 14 Jan 2025
4 Open Document Open Filing 16 Jan 2025 14 Jan 2025
4 Open Document Open Filing 16 Jan 2025 14 Jan 2025
4 Open Document Open Filing 16 Jan 2025 14 Jan 2025
4 Open Document Open Filing 16 Jan 2025 14 Jan 2025
SCHEDULE 13G Open Document Open Filing 14 Jan 2025 005-94801
8-K Open Document | Data Open Filing CURRENT REPORT 10 Jan 2025 08 Jan 2025 001-40729
424B5 Open Document Open Filing PROSPECTUS SUPPLEMENT 08 Jan 2025 333-268058
8-K Open Document | Data Open Filing FORM 8-K 13 Dec 2024 13 Dec 2024 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 11 Dec 2024 10 Dec 2024 001-40729
10-Q Open Document | Data Open Filing QUARTERLY REPORT 14 Nov 2024 30 Sep 2024 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 04 Nov 2024 29 Oct 2024 001-40729
DEFA14A Open Document Open Filing DEFA14A 25 Oct 2024 001-40729
DEF 14A Open Document Open Filing DEF 14A 25 Oct 2024 24 Oct 2024 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 24 Oct 2024 23 Oct 2024 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 29 Aug 2024 27 Aug 2024 001-40729
10-Q Open Document | Data Open Filing QUARTERLY REPORT 14 Aug 2024 30 Jun 2024 001-40729
10-Q Open Document | Data Open Filing QUARTERLY REPORT 14 May 2024 31 Mar 2024 001-40729
10-K Open Document | Data Open Filing ANNUAL REPORT 29 Mar 2024 31 Dec 2023 001-40729
8-K Open Document | Data Open Filing 8-K 29 Feb 2024 23 Feb 2024 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 19 Jan 2024 16 Jan 2024 001-40729
424B5 Open Document Open Filing PROSPECTUS SUPPLEMENT 18 Jan 2024 333-268058
424B5 Open Document Open Filing PRELIMINARY PROSPECTUS SUPPLEMENT 16 Jan 2024 333-268058
8-K Open Document | Data Open Filing CURRENT REPORT 16 Jan 2024 16 Jan 2024 001-40729
8-K Open Document | Data Open Filing 8-K 28 Dec 2023 21 Dec 2023 001-40729
10-Q Open Document | Data Open Filing QUARTERLY REPORT 13 Nov 2023 30 Sep 2023 001-40729
DEFA14A Open Document Open Filing DEFINITIVE ADDITIONAL MATERIALS 09 Nov 2023 001-40729
ARS Open Document Open Filing ANNUAL REPORT 09 Nov 2023 31 Dec 2022 001-40729
DEF 14A Open Document Open Filing PROXY STATEMENT 09 Nov 2023 21 Dec 2023 001-40729
PRE 14A Open Document Open Filing PROXY STATEMENT 27 Oct 2023 27 Oct 2023 001-40729
8-K Open Document | Data Open Filing 8-K 10 Oct 2023 04 Oct 2023 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 19 Sep 2023 19 Sep 2023 001-40729
8-K Open Document | Data Open Filing 8-K 12 Sep 2023 11 Sep 2023 001-40729
8-K Open Document | Data Open Filing 8-K 07 Sep 2023 05 Sep 2023 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 30 Aug 2023 28 Aug 2023 001-40729
8-K Open Document | Data Open Filing 8-K 24 Aug 2023 23 Aug 2023 001-40729
8-K Open Document | Data Open Filing 8-K 17 Aug 2023 16 Aug 2023 001-40729
10-Q Open Document | Data Open Filing QUARTERLY REPORT 14 Aug 2023 30 Jun 2023 001-40729
8-K Open Document | Data Open Filing 8-K 11 Aug 2023 09 Aug 2023 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 07 Aug 2023 04 Aug 2023 001-40729
DEFA14A Open Document Open Filing DEFINITIVE ADDITIONAL MATERIALS 04 Aug 2023 001-40729
DEF 14A Open Document Open Filing PROXY STATEMENT 04 Aug 2023 15 Sep 2023 001-40729
PRE 14A Open Document Open Filing PROXY STATEMENT 25 Jul 2023 25 Jul 2023 001-40729
8-K Open Document | Data Open Filing CURRENT 19 Jul 2023 18 Jul 2023 001-40729
8-K Open Document | Data Open Filing 8-K 05 Jun 2023 02 Jun 2023 001-40729
UPLOAD Open Document Open Filing 19 May 2023
10-Q Open Document | Data Open Filing QUARTERLY REPORT 15 May 2023 31 Mar 2023 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 12 May 2023 11 May 2023 001-40729
CORRESP Open Document Open Filing 12 May 2023
10-K/A Open Document | Data Open Filing AMENDMENT NO. 1 TO FORM 10-K 12 May 2023 31 Dec 2022 001-40729
UPLOAD Open Document Open Filing 02 May 2023
8-K Open Document | Data Open Filing CURRENT REPORT 14 Apr 2023 13 Apr 2023 001-40729
10-K Open Document | Data Open Filing ANNUAL REPORT 31 Mar 2023 31 Dec 2022 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 13 Mar 2023 13 Mar 2023 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 03 Mar 2023 28 Feb 2023 001-40729
8-K Open Document | Data Open Filing 8-K 19 Jan 2023 17 Jan 2023 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 13 Jan 2023 10 Jan 2023 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 21 Dec 2022 19 Dec 2022 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 07 Dec 2022 02 Dec 2022 001-40729
EFFECT Open Document Open Filing 06 Dec 2022 333-268058
CORRESP Open Document Open Filing 02 Dec 2022
S-3/A Open Document Open Filing AMENDMENT NO. 1 TO FORM S-3 18 Nov 2022 333-268058
10-Q Open Document | Data Open Filing QUARTERLY REPORT 14 Nov 2022 30 Sep 2022 001-40729
UPLOAD Open Document Open Filing 09 Nov 2022
DEFA14A Open Document Open Filing DEFINITIVE ADDITIONAL MATERIALS 08 Nov 2022 001-40729
DEF 14A Open Document Open Filing DEFINITIVE PROXY STATEMENT 08 Nov 2022 19 Dec 2022 001-40729
S-3 Open Document Open Filing REGISTRATION STATEMENT 28 Oct 2022 333-268058
8-K Open Document | Data Open Filing 8-K 26 Oct 2022 21 Oct 2022 001-40729
8-K Open Document | Data Open Filing 8-K 20 Oct 2022 14 Oct 2022 001-40729
4 Open Document Open Filing 22 Sep 2022 22 Sep 2022
8-K Open Document | Data Open Filing 8-K 26 Aug 2022 22 Aug 2022 001-40729
8-K Open Document | Data Open Filing 8-K 16 Aug 2022 11 Aug 2022 001-40729
10-Q Open Document | Data Open Filing QUARTERLY REPORT 15 Aug 2022 30 Jun 2022 001-40729
8-K Open Document | Data Open Filing 8-K 03 Aug 2022 01 Aug 2022 001-40729
8-K Open Document | Data Open Filing 8-K 28 Jul 2022 26 Jul 2022 001-40729
D Open Document Open Filing 13 Jul 2022 021-452234
8-K Open Document | Data Open Filing CURRENT REPORT 05 Jul 2022 29 Jun 2022 001-40729
10-Q Open Document | Data Open Filing QUARTERLY REPORT 16 May 2022 31 Mar 2022 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 10 May 2022 05 May 2022 001-40729
8-K Open Document | Data Open Filing 8-K 04 May 2022 02 May 2022 001-40729
8-K Open Document | Data Open Filing 8-K 03 May 2022 29 Apr 2022 001-40729
8-K Open Document | Data Open Filing 8-K 27 Apr 2022 26 Apr 2022 001-40729
8-K Open Document | Data Open Filing 8-K 14 Apr 2022 13 Apr 2022 001-40729
10-K Open Document | Data Open Filing ANNUAL REPORT 29 Mar 2022 31 Dec 2021 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT FILING 28 Mar 2022 28 Mar 2022 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 24 Mar 2022 24 Mar 2022 001-40729
8-K Open Document | Data Open Filing 8-K 10 Mar 2022 09 Mar 2022 001-40729
3 Open Document Open Filing 01 Mar 2022 15 Feb 2022
8-K Open Document | Data Open Filing CURRENT REPORT 16 Feb 2022 15 Feb 2022 001-40729
8-K Open Document | Data Open Filing 8-K 28 Jan 2022 26 Jan 2022 001-40729
8-K Open Document | Data Open Filing 8-K 21 Jan 2022 20 Jan 2022 001-40729
8-K Open Document | Data Open Filing 8-K 19 Jan 2022 18 Jan 2022 001-40729
8-K Open Document | Data Open Filing 8-K 15 Dec 2021 14 Dec 2021 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 02 Dec 2021 30 Nov 2021 001-40729
10-Q Open Document | Data Open Filing QUARTERLY REPORT 12 Nov 2021 30 Sep 2021 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 29 Oct 2021 28 Oct 2021 001-40729
8-K Open Document | Data Open Filing CURRENT REPORT 15 Oct 2021 15 Oct 2021 001-40729
8-K/A Open Document | Data Open Filing 8-K/A 13 Oct 2021 07 Oct 2021 001-40729
8-K Open Document | Data Open Filing 8-K 13 Oct 2021 07 Oct 2021 001-40729
4/A Open Document Open Filing 12 Oct 2021 13 Aug 2021
4/A Open Document Open Filing 12 Oct 2021 13 Aug 2021
4/A Open Document Open Filing 12 Oct 2021 13 Aug 2021
4 Open Document Open Filing OWNERSHIP DOCUMENT 30 Sep 2021 28 Sep 2021
4 Open Document Open Filing OWNERSHIP DOCUMENT 30 Sep 2021 28 Sep 2021
4 Open Document Open Filing OWNERSHIP DOCUMENT 30 Sep 2021 28 Sep 2021
4 Open Document Open Filing OWNERSHIP DOCUMENT 30 Sep 2021 28 Sep 2021
4 Open Document Open Filing OWNERSHIP DOCUMENT 30 Sep 2021 28 Sep 2021
8-K Open Document | Data Open Filing CURRENT REPORT 24 Sep 2021 22 Sep 2021 001-40729
10-Q Open Document | Data Open Filing QUARTERLY REPORT 24 Sep 2021 30 Jun 2021 001-40729
8-K Open Document | Data Open Filing 8-K 31 Aug 2021 26 Aug 2021 001-40729
3 Open Document Open Filing 30 Aug 2021 12 Aug 2021
4 Open Document Open Filing 26 Aug 2021 24 Aug 2021
4 Open Document Open Filing 26 Aug 2021 24 Aug 2021
3 Open Document Open Filing 26 Aug 2021 12 Aug 2021
3 Open Document Open Filing 26 Aug 2021 12 Aug 2021
4 Open Document Open Filing 20 Aug 2021 17 Aug 2021
4 Open Document Open Filing 20 Aug 2021 17 Aug 2021
4 Open Document Open Filing 20 Aug 2021 17 Aug 2021
3 Open Document Open Filing 19 Aug 2021 12 Aug 2021
3 Open Document Open Filing 19 Aug 2021 12 Aug 2021
3 Open Document Open Filing 19 Aug 2021 12 Aug 2021
424B4 Open Document Open Filing 424A 16 Aug 2021 333-257688
3 Open Document Open Filing 13 Aug 2021 12 Aug 2021
3 Open Document Open Filing 13 Aug 2021 12 Aug 2021
EFFECT Open Document Open Filing 12 Aug 2021 333-257688
CERT Open Document Open Filing 12 Aug 2021 001-40729
8-A12B/A Open Document Open Filing 8-A12B/A 12 Aug 2021 001-40729
S-1/A Open Document Open Filing S-1/A 12 Aug 2021 333-257688
CORRESP Open Document Open Filing 10 Aug 2021
CORRESP Open Document Open Filing 10 Aug 2021
8-A12B Open Document Open Filing 8-A12B 10 Aug 2021 001-40729
S-1/A Open Document Open Filing S-1/A 10 Aug 2021 333-257688
FWP Open Document Open Filing FWP 03 Aug 2021 333-257688
S-1/A Open Document Open Filing S-1/A 03 Aug 2021 333-257688
FWP Open Document Open Filing FWP 09 Jul 2021 333-257688
S-1 Open Document Open Filing S-1 02 Jul 2021 333-257688
DRS/A Open Document Open Filing 14 May 2021 377-04583
UPLOAD Open Document Open Filing 03 May 2021
1-K Open Document Open Filing 27 Apr 2021 31 Dec 2020 24R-00092
DRS Open Document Open Filing 05 Apr 2021 377-04583
1-SA Open Document Open Filing 1-SA 26 Oct 2020 30 Jun 2020 24R-00092
1-K Open Document Open Filing 06 May 2020 31 Dec 2019 24R-00092
1-U Open Document Open Filing CURRENT REPORT 30 Apr 2020 29 Apr 2020 24R-00092
1-SA Open Document Open Filing FORM 1-SA FOR PERIOD ENDED JUNE 30, 2019 30 Sep 2019 30 Jun 2019 24R-00092
1-K Open Document Open Filing 30 Apr 2019 31 Dec 2018 24R-00092
1-U Open Document Open Filing CURRENT REPORT 05 Feb 2019 31 Jan 2019 24R-00092
1-SA Open Document Open Filing FORM 1-SA FOR PERIOD ENDED JUNE 30, 2018 28 Sep 2018 30 Jun 2018 24R-00092
1-U Open Document Open Filing CURRENT REPORT 22 Aug 2018 08 Aug 2018 24R-00092
1-U Open Document Open Filing CURRENT REPORT 09 May 2018 03 May 2018 24R-00092
1-K Open Document Open Filing 27 Apr 2018 31 Dec 2017 24R-00092
1-U Open Document Open Filing CURRENT REPORT 15 Mar 2018 12 Mar 2018 24R-00092
1-U Open Document Open Filing CURRENT REPORT 15 Mar 2018 25 Jan 2018 24R-00092
D Open Document Open Filing 09 Feb 2018 021-305322
1-SA Open Document Open Filing SEMIANNUAL REPORT 29 Sep 2017 30 Jun 2017 24R-00092
1-K Open Document Open Filing 21 Jul 2017 31 Dec 2016 24R-00092
QUALIF Open Document Open Filing 02 Feb 2017 024-10613
CORRESP Open Document Open Filing 01 Feb 2017
1-A/A Open Document Open Filing 31 Jan 2017 024-10613
1-A/A Open Document Open Filing 25 Jan 2017 024-10613
CORRESP Open Document Open Filing 12 Jan 2017
1-A/A Open Document Open Filing 12 Jan 2017 024-10613
CORRESP Open Document Open Filing 07 Dec 2016
1-A/A Open Document Open Filing 07 Dec 2016 024-10613
UPLOAD Open Document Open Filing 17 Oct 2016
1-A Open Document Open Filing 23 Sep 2016 024-10613
D Open Document Open Filing 08 Aug 2016 021-268505
D Open Document Open Filing 28 Jul 2015 021-244565