Cyngn Inc.

Symbol
CYN on Nasdaq
Business address
1344 Terra Bella Avenue, Mountain View, CA, 94043
State of incorporation
DE
Fiscal year end
31 December
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Cyngn Inc. has filed 230 SEC EDGAR filings since 28 Jul 2021

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
8-K Open Document | Data Open Filing CURRENT REPORT 05 Dec 2025 05 Dec 2025 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 04 Dec 2025 03 Dec 2025 001-40932
10-Q Open Document | Data Open Filing QUARTERLY REPORT 19 Nov 2025 30 Sep 2025 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 19 Nov 2025 18 Nov 2025 001-40932
NT 10-Q Open Document Open Filing NOTIFICATION OF LATE FILING 14 Nov 2025 30 Sep 2025 001-40932
10-K/A Open Document | Data Open Filing AMENDMENT NO. 1 TO FORM 10-K 14 Nov 2025 31 Dec 2024 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 07 Nov 2025 04 Nov 2025 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 24 Oct 2025 22 Oct 2025 001-40932
DEFA14A Open Document Open Filing PROXY STATEMENT 22 Oct 2025 001-40932
DEF 14A Open Document Open Filing PROXY STATEMENT 22 Oct 2025 03 Dec 2025 001-40932
SCHEDULE 13G/A Open Document Open Filing 21 Oct 2025 005-93348
8-K Open Document | Data Open Filing CURRENT REPORT 17 Oct 2025 13 Oct 2025 001-40932
DEFA14A Open Document Open Filing DEFINITIVE ADDITIONAL MATERIALS 06 Oct 2025 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 06 Oct 2025 06 Oct 2025 001-40932
EFFECT Open Document Open Filing 18 Sep 2025 333-290079
CORRESP Open Document Open Filing 16 Sep 2025
UPLOAD Open Document Open Filing 15 Sep 2025 333-290079
8-K Open Document | Data Open Filing CURRENT REPORT 05 Sep 2025 05 Sep 2025 001-40932
S-3 Open Document | Data Open Filing REGISTRATION STATEMENT 05 Sep 2025 333-290079
DEFA14A Open Document Open Filing DEFINITIVE ADDITIONAL MATERIALS 19 Aug 2025 001-40932
DEF 14A Open Document Open Filing PROXY STATEMENT 19 Aug 2025 06 Oct 2025 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 15 Aug 2025 12 Aug 2025 001-40932
PRE 14A Open Document Open Filing PROXY STATEMENT 08 Aug 2025 08 Aug 2025 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 07 Aug 2025 06 Aug 2025 001-40932
10-Q Open Document | Data Open Filing QUARTERLY REPORT 07 Aug 2025 30 Jun 2025 001-40932
SCHEDULE 13G Open Document Open Filing 31 Jul 2025 005-93348
8-K Open Document | Data Open Filing CURRENT REPORT 30 Jun 2025 27 Jun 2025 001-40932
424B5 Open Document Open Filing PROSPECTUS SUPPLEMENT 30 Jun 2025 333-271567
8-K Open Document | Data Open Filing CURRENT REPORT 27 Jun 2025 26 Jun 2025 001-40932
424B5 Open Document Open Filing PROSPECTUS SUPPLEMENT 27 Jun 2025 333-271567
8-K Open Document | Data Open Filing CURRENT REPORT 06 Jun 2025 06 Jun 2025 001-40932
3 Open Document Open Filing 15 May 2025 06 May 2025
3 Open Document Open Filing 15 May 2025 06 May 2025
SCHEDULE 13G/A Open Document Open Filing 15 May 2025 005-93348
SCHEDULE 13G/A Open Document Open Filing 14 May 2025 005-93348
10-Q Open Document | Data Open Filing QUARTERLY REPORT 08 May 2025 31 Mar 2025 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 08 May 2025 07 May 2025 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 25 Apr 2025 23 Apr 2025 001-40932
S-8 Open Document Open Filing REGISTRATION STATEMENT 21 Mar 2025 333-286030
10-K Open Document | Data Open Filing ANNUAL REPORT 06 Mar 2025 31 Dec 2024 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 05 Mar 2025 05 Mar 2025 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 28 Feb 2025 24 Feb 2025 001-40932
SCHEDULE 13G/A Open Document Open Filing 14 Feb 2025 005-93348
SCHEDULE 13G/A Open Document Open Filing 14 Feb 2025 005-93348
SCHEDULE 13G Open Document Open Filing 14 Feb 2025 005-93348
SCHEDULE 13G/A Open Document Open Filing 13 Feb 2025 005-93348
8-K Open Document | Data Open Filing CURRENT REPORT 12 Feb 2025 07 Feb 2025 001-40932
SCHEDULE 13G/A Open Document Open Filing 07 Feb 2025 005-93348
8-K Open Document | Data Open Filing FORM 8-K 06 Feb 2025 06 Feb 2025 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 30 Jan 2025 30 Jan 2025 001-40932
SCHEDULE 13G Open Document Open Filing 08 Jan 2025 005-93348
SCHEDULE 13G/A Open Document Open Filing 08 Jan 2025 005-93348
SCHEDULE 13G Open Document Open Filing 07 Jan 2025 005-93348
DEF 14A Open Document Open Filing PROXY STATEMENT 06 Jan 2025 30 Jan 2025 001-40932
SCHEDULE 13G/A Open Document Open Filing 03 Jan 2025 005-93348
8-K Open Document | Data Open Filing CURRENT REPORT 31 Dec 2024 30 Dec 2024 001-40932
SCHEDULE 13G Open Document Open Filing 31 Dec 2024 005-93348
424B5 Open Document Open Filing PROSPECTUS SUPPLEMENT 31 Dec 2024 333-271567
SCHEDULE 13G Open Document Open Filing 31 Dec 2024 005-93348
PRE 14A Open Document Open Filing PRELIMINARY PROXY STATEMENT 23 Dec 2024 23 Dec 2024 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 23 Dec 2024 20 Dec 2024 001-40932
424B4 Open Document Open Filing PROSPECTUS 23 Dec 2024 333-283514
EFFECT Open Document Open Filing 19 Dec 2024 333-283514
CORRESP Open Document Open Filing 18 Dec 2024
CORRESP Open Document Open Filing 18 Dec 2024
S-1/A Open Document Open Filing AMENDMENT NO. 1 TO FORM S-1 18 Dec 2024 333-283514
EFFECT Open Document Open Filing 06 Dec 2024 333-283438
424B3 Open Document Open Filing PROSPECTUS 06 Dec 2024 333-283438
UPLOAD Open Document Open Filing 05 Dec 2024 333-283514
CORRESP Open Document Open Filing 05 Dec 2024
UPLOAD Open Document Open Filing 04 Dec 2024 333-283438
S-1 Open Document Open Filing REGISTRATION STATEMENT 27 Nov 2024 333-283514
S-3 Open Document Open Filing REGISTRATION STATEMENT 25 Nov 2024 333-283438
D Open Document Open Filing 25 Nov 2024 021-530320
SC 13G/A Open Document Open Filing SC 13G/A 13 Nov 2024 005-93348
8-K Open Document | Data Open Filing CURRENT REPORT 12 Nov 2024 12 Nov 2024 001-40932
10-Q Open Document | Data Open Filing QUARTERLY REPORT 07 Nov 2024 30 Sep 2024 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 07 Nov 2024 06 Nov 2024 001-40932
1-A-W Open Document Open Filing WITHDRAWAL OF OFFERING STATEMENT 30 Oct 2024 024-12486
1-A/A Open Document Open Filing 17 Oct 2024 024-12486
1-A/A Open Document Open Filing 30 Sep 2024 024-12486
1-A Open Document Open Filing 15 Aug 2024 024-12486
8-K Open Document | Data Open Filing CURRENT REPORT 09 Aug 2024 07 Aug 2024 001-40932
10-Q Open Document | Data Open Filing QUARTERLY REPORT 08 Aug 2024 30 Jun 2024 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 09 Jul 2024 03 Jul 2024 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 25 Jun 2024 21 Jun 2024 001-40932
DEFA14A Open Document Open Filing SOLICITING MATERIAL 31 May 2024 001-40932
DEF 14A Open Document Open Filing PROXY STATEMENT 21 May 2024 25 Jun 2024 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 17 May 2024 15 May 2024 001-40932
PRE 14A Open Document Open Filing PRELIMINARY PROXY STATEMENT 10 May 2024 10 May 2024 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 10 May 2024 07 May 2024 001-40932
10-Q Open Document | Data Open Filing QUARTERLY REPORT 09 May 2024 31 Mar 2024 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 09 May 2024 08 May 2024 001-40932
4 Open Document Open Filing 03 May 2024 01 May 2024
4 Open Document Open Filing 03 May 2024 01 May 2024
4 Open Document Open Filing 03 May 2024 01 May 2024
8-K Open Document | Data Open Filing CURRENT REPORT 24 Apr 2024 23 Apr 2024 001-40932
424B4 Open Document Open Filing PROSPECTUS 24 Apr 2024 333-278671
EFFECT Open Document Open Filing 23 Apr 2024 333-278671
CORRESP Open Document Open Filing 23 Apr 2024
CORRESP Open Document Open Filing 23 Apr 2024
S-1/A Open Document Open Filing AMENDMENT NO.1 TO FORM S-1 23 Apr 2024 333-278671
UPLOAD Open Document Open Filing 18 Apr 2024 333-278671
8-K Open Document | Data Open Filing CURRENT REPORT 18 Apr 2024 18 Apr 2024 001-40932
S-1 Open Document Open Filing REGISTRATION STATEMENT 12 Apr 2024 333-278671
10-K Open Document | Data Open Filing ANNUAL REPORT 07 Mar 2024 31 Dec 2023 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 06 Mar 2024 06 Mar 2024 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 21 Feb 2024 21 Feb 2024 001-40932
SC 13G/A Open Document Open Filing SC 13G/A 14 Feb 2024 005-93348
SC 13G/A Open Document Open Filing SC 13G/A 13 Feb 2024 005-93348
S-8 Open Document Open Filing REGISTRATION STATEMENT 31 Jan 2024 333-276792
SC 13G/A Open Document Open Filing CYNGN INC. 23 Jan 2024 005-93348
SC 13G Open Document Open Filing CYNGN INC. 10 Jan 2024 005-93348
SC 13G Open Document Open Filing CYN 13G 1.04.24 04 Jan 2024 005-93348
8-K Open Document | Data Open Filing CURRENT REPORT 11 Dec 2023 08 Dec 2023 001-40932
424B4 Open Document Open Filing PROSPECTUS 11 Dec 2023 333-275530
EFFECT Open Document Open Filing 07 Dec 2023 333-275530
CORRESP Open Document Open Filing 06 Dec 2023
CORRESP Open Document Open Filing 06 Dec 2023
S-1/A Open Document Open Filing AMENDMENT NO. 2 TO FORM S-1 05 Dec 2023 333-275530
S-1/A Open Document Open Filing AMENDMENT NO. 1 TO FORM S-1 28 Nov 2023 333-275530
UPLOAD Open Document Open Filing 21 Nov 2023
S-1 Open Document Open Filing REGISTRATION STATEMENT 14 Nov 2023 333-275530
4 Open Document Open Filing 09 Nov 2023 07 Nov 2023
4 Open Document Open Filing 09 Nov 2023 07 Nov 2023
4 Open Document Open Filing 09 Nov 2023 07 Nov 2023
8-K Open Document | Data Open Filing FORM 8-K 09 Nov 2023 07 Nov 2023 001-40932
10-Q Open Document | Data Open Filing QUARTERLY REPORT 09 Nov 2023 30 Sep 2023 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 08 Nov 2023 08 Nov 2023 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 26 Oct 2023 26 Oct 2023 001-40932
DEF 14A Open Document Open Filing PROXY STATEMENT 03 Oct 2023 07 Nov 2023 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 02 Oct 2023 02 Oct 2023 001-40932
PRE 14A Open Document Open Filing PROXY STATEMENT 22 Sep 2023 22 Sep 2023 001-40932
8-K Open Document | Data Open Filing FORM 8-K 25 Aug 2023 24 Aug 2023 001-40932
10-Q Open Document | Data Open Filing QUARTERLY REPORT 10 Aug 2023 30 Jun 2023 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 09 Aug 2023 09 Aug 2023 001-40932
424B3 Open Document Open Filing PROSPECTUS 15 Jun 2023 333-271567
EFFECT Open Document Open Filing 13 Jun 2023 333-271567
CORRESP Open Document Open Filing 12 Jun 2023
4 Open Document Open Filing 31 May 2023 27 May 2023
4 Open Document Open Filing 31 May 2023 27 May 2023
4 Open Document Open Filing 31 May 2023 27 May 2023
8-K Open Document | Data Open Filing CURRENT REPORT 31 May 2023 31 May 2023 001-40932
S-3/A Open Document Open Filing AMENDMENT NO. 1 TO FORM S-3 31 May 2023 333-271567
10-Q Open Document | Data Open Filing QUARTERLY REPORT 11 May 2023 31 Mar 2023 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 10 May 2023 10 May 2023 001-40932
UPLOAD Open Document Open Filing 05 May 2023
S-3 Open Document Open Filing REGISTRATION STATEMENT 02 May 2023 333-271567
4 Open Document Open Filing 04 Apr 2023 31 Mar 2023
8-K Open Document | Data Open Filing CURRENT REPORT 29 Mar 2023 28 Mar 2023 001-40932
10-K Open Document | Data Open Filing ANNUAL REPORT 17 Mar 2023 31 Dec 2022 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 15 Mar 2023 15 Mar 2023 001-40932
424B3 Open Document Open Filing PROSPECTUS 20 Jan 2023 333-264887
EFFECT Open Document Open Filing 18 Jan 2023 333-264887
POS AM Open Document Open Filing POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-1 09 Jan 2023 333-264887
8-K Open Document | Data Open Filing FORM 8-K 16 Dec 2022 15 Dec 2022 001-40932
4 Open Document Open Filing 10 Nov 2022 08 Nov 2022
4 Open Document Open Filing 10 Nov 2022 08 Nov 2022
4 Open Document Open Filing 10 Nov 2022 08 Nov 2022
10-Q Open Document | Data Open Filing QUARTERLY REPORT 10 Nov 2022 30 Sep 2022 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 09 Nov 2022 09 Nov 2022 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 11 Aug 2022 09 Aug 2022 001-40932
10-Q Open Document | Data Open Filing QUARTERLY REPORT 11 Aug 2022 30 Jun 2022 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 10 Aug 2022 10 Aug 2022 001-40932
4 Open Document Open Filing 01 Aug 2022 27 Jul 2022
4 Open Document Open Filing 20 Jul 2022 13 Jul 2022
4 Open Document Open Filing 20 Jul 2022 13 Jul 2022
4 Open Document Open Filing 20 Jul 2022 13 Jul 2022
DEF 14A Open Document Open Filing DEFINITIVE PROXY STATEMENTS 22 Jun 2022 09 Aug 2022 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 22 Jun 2022 16 Jun 2022 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 24 May 2022 23 May 2022 001-40932
EFFECT Open Document Open Filing 17 May 2022 333-264887
424B3 Open Document Open Filing PROSPECTUS 17 May 2022 333-264887
CORRESP Open Document Open Filing 13 May 2022
UPLOAD Open Document Open Filing 13 May 2022
S-1 Open Document | Data Open Filing REGISTRATION STATEMENT 12 May 2022 333-264887
8-K Open Document | Data Open Filing CURRENT REPORT 12 May 2022 11 May 2022 001-40932
10-Q Open Document | Data Open Filing QUARTERLY REPORT 12 May 2022 31 Mar 2022 001-40932
4 Open Document Open Filing 04 May 2022 02 May 2022
4 Open Document Open Filing 03 May 2022 02 May 2022
4 Open Document Open Filing 03 May 2022 02 May 2022
D Open Document Open Filing 03 May 2022 021-444296
8-K Open Document | Data Open Filing CURRENT REPORT 29 Apr 2022 28 Apr 2022 001-40932
10-K Open Document | Data Open Filing ANNUAL REPORT 24 Mar 2022 31 Dec 2021 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 23 Feb 2022 22 Feb 2022 001-40932
SC 13G Open Document Open Filing SC 13G 14 Feb 2022 005-93348
SC 13G Open Document Open Filing SC 13G 14 Feb 2022 005-93348
SC 13G Open Document Open Filing SC 13G 11 Feb 2022 005-93348
SC 13D Open Document Open Filing SCHEDULE 13D 08 Feb 2022 005-93348
4 Open Document Open Filing 03 Feb 2022 02 Feb 2022
S-8 Open Document Open Filing REGISTRATION STATEMENT 12 Jan 2022 333-262130
8-K Open Document | Data Open Filing CURRENT REPORT 06 Jan 2022 01 Jan 2022 001-40932
8-K Open Document | Data Open Filing CURRENT REPORT 19 Nov 2021 16 Nov 2021 001-40932
10-Q Open Document | Data Open Filing QUARTERLY REPORT 19 Nov 2021 30 Sep 2021 001-40932
4 Open Document Open Filing 17 Nov 2021 16 Nov 2021
8-K Open Document Open Filing CURRENT REPORT 17 Nov 2021 17 Nov 2021 001-40932
4 Open Document Open Filing 17 Nov 2021 16 Nov 2021
4 Open Document Open Filing 17 Nov 2021 16 Nov 2021
8-K Open Document Open Filing CURRENT REPORT 04 Nov 2021 29 Oct 2021 001-40932
4 Open Document Open Filing FORM 4 SUBMISSION 26 Oct 2021 22 Oct 2021
3 Open Document Open Filing 25 Oct 2021 19 Oct 2021
4 Open Document Open Filing 22 Oct 2021 22 Oct 2021
4 Open Document Open Filing 22 Oct 2021 22 Oct 2021
4 Open Document Open Filing OWNERSHIP DOCUMENT 22 Oct 2021 22 Oct 2021
4 Open Document Open Filing OWNERSHIP DOCUMENT 22 Oct 2021 22 Oct 2021
424B4 Open Document Open Filing PROSPECTUS 21 Oct 2021 333-259278
EFFECT Open Document Open Filing 19 Oct 2021 333-259278
3 Open Document Open Filing FORM 3 SUBMISSION 19 Oct 2021 19 Oct 2021
3 Open Document Open Filing OWNERSHIP DOCUMENT 19 Oct 2021 19 Oct 2021
3 Open Document Open Filing 19 Oct 2021 19 Oct 2021
3 Open Document Open Filing 19 Oct 2021 19 Oct 2021
3 Open Document Open Filing 19 Oct 2021 19 Oct 2021
3 Open Document Open Filing 19 Oct 2021 19 Oct 2021
3 Open Document Open Filing 19 Oct 2021 19 Oct 2021
3 Open Document Open Filing 19 Oct 2021 19 Oct 2021
3 Open Document Open Filing 19 Oct 2021 19 Oct 2021
3 Open Document Open Filing 19 Oct 2021 19 Oct 2021
CERT Open Document Open Filing 19 Oct 2021 001-40932
8-A12B Open Document Open Filing REGISTRATION OF CERTAIN CLASSES OF SECURITIES 19 Oct 2021 001-40932
CORRESP Open Document Open Filing 18 Oct 2021
CORRESP Open Document Open Filing 18 Oct 2021
S-1/A Open Document Open Filing REGISTRATION STATEMENT 15 Oct 2021 333-259278
FWP Open Document Open Filing FREE WRITING PROSPECTUS 12 Oct 2021 333-259278
S-1/A Open Document Open Filing REGISTRATION STATEMENT 30 Sep 2021 333-259278
CORRESP Open Document Open Filing 29 Sep 2021
UPLOAD Open Document Open Filing 20 Sep 2021
S-1 Open Document Open Filing REGISTRATION STATEMENT 03 Sep 2021 333-259278
CORRESP Open Document Open Filing 02 Sep 2021
UPLOAD Open Document Open Filing 23 Aug 2021
DRS Open Document Open Filing 28 Jul 2021 377-05263