GCT Semiconductor Holding, Inc.

Symbol
GCTS, GCTS-WT on NYSE
Business address
2290 North 1 St Street, Suite 201, San Jose, CA, 95131
State of incorporation
DE
Fiscal year end
31 December
Former names
Concord Acquisition Corp III (to 28 Mar 2024)
Get insider transactions for this issuer
GCT Semiconductor Holding, Inc. has filed 287 SEC EDGAR filings since 26 Mar 2021

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
424B5 Open Document Open Filing 424B5 15 Dec 2025 333-286316
8-K Open Document | Data Open Filing CURRENT REPORT 15 Dec 2025 15 Dec 2025 001-41013
4 Open Document Open Filing 28 Nov 2025 25 Nov 2025
4 Open Document Open Filing 24 Nov 2025 20 Nov 2025
8-K Open Document | Data Open Filing CURRENT REPORT 12 Nov 2025 12 Nov 2025 001-41013
10-Q Open Document | Data Open Filing 10-Q 12 Nov 2025 30 Sep 2025 001-41013
4 Open Document Open Filing 03 Oct 2025 30 Sep 2025
4 Open Document Open Filing 02 Oct 2025 30 Sep 2025
4 Open Document Open Filing 02 Oct 2025 30 Sep 2025
4 Open Document Open Filing 02 Oct 2025 30 Sep 2025
4 Open Document Open Filing 02 Oct 2025 30 Sep 2025
4 Open Document Open Filing 02 Oct 2025 30 Sep 2025
4 Open Document Open Filing 30 Sep 2025 26 Sep 2025
4 Open Document Open Filing 23 Sep 2025 19 Sep 2025
4 Open Document Open Filing 23 Sep 2025 19 Sep 2025
4 Open Document Open Filing 23 Sep 2025 19 Sep 2025
4 Open Document Open Filing 23 Sep 2025 19 Sep 2025
8-K Open Document | Data Open Filing CURRENT REPORT 19 Sep 2025 18 Sep 2025 001-41013
4 Open Document Open Filing 16 Sep 2025 12 Sep 2025
8-K Open Document | Data Open Filing CURRENT REPORT 11 Sep 2025 10 Sep 2025 001-41013
4 Open Document Open Filing 08 Sep 2025 04 Sep 2025
SCHEDULE 13G/A Open Document Open Filing 22 Aug 2025 005-93046
4 Open Document Open Filing 19 Aug 2025 15 Aug 2025
10-Q Open Document | Data Open Filing 10-Q 12 Aug 2025 30 Jun 2025 001-41013
8-K Open Document | Data Open Filing CURRENT REPORT 12 Aug 2025 12 Aug 2025 001-41013
SCHEDULE 13G/A Open Document Open Filing 12 Aug 2025 005-93046
ARS Open Document Open Filing 04 Aug 2025 27 Jul 2025 001-41013
DEFA14A Open Document Open Filing 04 Aug 2025 001-41013
DEF 14A Open Document | Data Open Filing DEF 14A 04 Aug 2025 18 Sep 2025 001-41013
PRE 14A Open Document | Data Open Filing PRE 14A 25 Jul 2025 18 Sep 2025 001-41013
4 Open Document Open Filing 02 Jul 2025 30 Jun 2025
4 Open Document Open Filing 02 Jul 2025 30 Jun 2025
4 Open Document Open Filing 02 Jul 2025 30 Jun 2025
4 Open Document Open Filing 02 Jul 2025 30 Jun 2025
4 Open Document Open Filing 02 Jul 2025 30 Jun 2025
4 Open Document Open Filing 02 Jul 2025 30 Jun 2025
4 Open Document Open Filing 12 Jun 2025 10 Jun 2025
EFFECT Open Document Open Filing 10 Jun 2025 333-278809
EFFECT Open Document Open Filing 06 Jun 2025 333-286704
POS AM Open Document Open Filing 06 Jun 2025 333-278809
8-K Open Document | Data Open Filing CURRENT REPORT 06 Jun 2025 06 Jun 2025 001-41013
4 Open Document Open Filing 06 Jun 2025 04 Jun 2025
CORRESP Open Document Open Filing 04 Jun 2025
CORRESP Open Document Open Filing 30 May 2025
S-3/A Open Document Open Filing FORM S-3/A 30 May 2025 333-286704
4 Open Document Open Filing 27 May 2025 23 May 2025
4 Open Document Open Filing 21 May 2025 20 May 2025
UPLOAD Open Document Open Filing 20 May 2025 333-286704
8-K Open Document | Data Open Filing FORM 8-K 16 May 2025 15 May 2025 001-41013
424B5 Open Document Open Filing 424B5 16 May 2025 333-286316
8-K Open Document | Data Open Filing CURRENT REPORT 14 May 2025 14 May 2025 001-41013
10-Q Open Document | Data Open Filing 10-Q 14 May 2025 31 Mar 2025 001-41013
CORRESP Open Document Open Filing 13 May 2025
S-3/A Open Document Open Filing FORM S-3/A 13 May 2025 333-286704
EFFECT Open Document Open Filing 02 May 2025 333-279600
UPLOAD Open Document Open Filing 01 May 2025 333-286704
EFFECT Open Document Open Filing 30 Apr 2025 333-286713
POS AM Open Document Open Filing 30 Apr 2025 333-279600
CORRESP Open Document Open Filing 28 Apr 2025
UPLOAD Open Document Open Filing 28 Apr 2025 333-286713
S-3 Open Document Open Filing FORM S-3 23 Apr 2025 333-286713
S-3 Open Document Open Filing FORM S-3 23 Apr 2025 333-286704
4 Open Document Open Filing 23 Apr 2025 26 Mar 2025
8-K Open Document | Data Open Filing CURRENT REPORT 17 Apr 2025 16 Apr 2025 001-41013
SCHEDULE 13G Open Document Open Filing 15 Apr 2025 005-93046
4/A Open Document Open Filing 14 Apr 2025 26 Mar 2024
EFFECT Open Document Open Filing 09 Apr 2025 333-286316
4/A Open Document Open Filing 07 Apr 2025 26 Mar 2024
CORRESP Open Document Open Filing 07 Apr 2025
UPLOAD Open Document Open Filing 04 Apr 2025 333-286316
4 Open Document Open Filing 02 Apr 2025 31 Mar 2025
4 Open Document Open Filing 02 Apr 2025 31 Mar 2025
4 Open Document Open Filing 02 Apr 2025 31 Mar 2025
4 Open Document Open Filing 02 Apr 2025 31 Mar 2025
4 Open Document Open Filing 02 Apr 2025 31 Mar 2025
4 Open Document Open Filing 02 Apr 2025 31 Mar 2025
S-3 Open Document Open Filing S-3 01 Apr 2025 333-286316
SCHEDULE 13G/A Open Document Open Filing 28 Mar 2025 005-93046
4 Open Document Open Filing OWNERSHIP DOCUMENT 28 Mar 2025 26 Mar 2025
424B3 Open Document Open Filing 26 Mar 2025 333-279600
424B3 Open Document Open Filing 26 Mar 2025 333-278809
10-K Open Document | Data Open Filing 10-K 25 Mar 2025 31 Dec 2024 001-41013
8-K Open Document | Data Open Filing CURRENT REPORT 25 Mar 2025 25 Mar 2025 001-41013
4/A Open Document Open Filing 27 Feb 2025 26 Mar 2024
4/A Open Document Open Filing 27 Feb 2025 26 Mar 2024
4 Open Document Open Filing 21 Feb 2025 13 Jan 2025
4 Open Document Open Filing 21 Feb 2025 19 Feb 2025
SCHEDULE 13G Open Document Open Filing 14 Feb 2025 005-93046
8-K Open Document | Data Open Filing CURRENT REPORT 29 Jan 2025 24 Jan 2025 001-41013
4 Open Document Open Filing 02 Jan 2025 31 Dec 2024
4 Open Document Open Filing 02 Jan 2025 31 Dec 2024
4 Open Document Open Filing 02 Jan 2025 31 Dec 2024
4 Open Document Open Filing 02 Jan 2025 31 Dec 2024
4 Open Document Open Filing 02 Jan 2025 31 Dec 2024
4 Open Document Open Filing 02 Jan 2025 31 Dec 2024
4 Open Document Open Filing 16 Dec 2024 13 Dec 2024
4 Open Document Open Filing 21 Nov 2024 30 Sep 2024
4 Open Document Open Filing 21 Nov 2024 30 Sep 2024
4 Open Document Open Filing 21 Nov 2024 30 Sep 2024
4 Open Document Open Filing 21 Nov 2024 30 Sep 2024
4 Open Document Open Filing 21 Nov 2024 30 Sep 2024
4 Open Document Open Filing 21 Nov 2024 30 Sep 2024
424B3 Open Document Open Filing 18 Nov 2024 333-278809
424B3 Open Document Open Filing 15 Nov 2024 333-279600
424B3 Open Document Open Filing 15 Nov 2024 333-279600
SC 13G/A Open Document Open Filing 14 Nov 2024 005-93046
10-Q Open Document | Data Open Filing 10-Q 14 Nov 2024 30 Sep 2024 001-41013
8-K Open Document | Data Open Filing 8-K 14 Nov 2024 14 Nov 2024 001-41013
SC 13G/A Open Document Open Filing SC 13G/A 13 Nov 2024 005-93046
SC 13G/A Open Document Open Filing 13 Nov 2024 005-93046
SC 13G/A Open Document Open Filing SC 13G/A 12 Nov 2024 005-93046
SC 13G Open Document Open Filing COWEN AND COMPANY, LLC 12 Nov 2024 005-93046
424B3 Open Document Open Filing 27 Sep 2024 333-278809
424B3 Open Document Open Filing 27 Sep 2024 333-278809
4 Open Document Open Filing 27 Sep 2024 26 Sep 2024
8-K Open Document | Data Open Filing CURRENT REPORT 26 Sep 2024 26 Sep 2024 001-41013
424B3 Open Document Open Filing 424B3 27 Aug 2024 333-279600
424B3 Open Document Open Filing 424B3 27 Aug 2024 333-278809
8-K Open Document | Data Open Filing FORM 8-K 26 Aug 2024 21 Aug 2024 001-41013
4 Open Document Open Filing 23 Aug 2024 21 Aug 2024
424B3 Open Document Open Filing 424B3 16 Aug 2024 333-279600
424B3 Open Document Open Filing 424B3 16 Aug 2024 333-278809
10-Q Open Document | Data Open Filing 10-Q 14 Aug 2024 30 Jun 2024 001-41013
8-K Open Document | Data Open Filing FORM 8-K 14 Aug 2024 14 Aug 2024 001-41013
424B3 Open Document Open Filing 424B3 10 Jul 2024 333-279600
8-K Open Document | Data Open Filing FORM 8-K 10 Jul 2024 10 Jul 2024 001-41013
4 Open Document Open Filing 05 Jul 2024 30 Jun 2024
4 Open Document Open Filing 03 Jul 2024 30 Jun 2024
4 Open Document Open Filing 03 Jul 2024 30 Jun 2024
4 Open Document Open Filing 03 Jul 2024 30 Jun 2024
4 Open Document Open Filing 03 Jul 2024 30 Jun 2024
4 Open Document Open Filing 03 Jul 2024 30 Jun 2024
SC 13G/A Open Document Open Filing SC 13G/A 28 Jun 2024 005-93046
S-8 Open Document Open Filing S-8 07 Jun 2024 333-280054
EFFECT Open Document Open Filing 06 Jun 2024 333-279600
CORRESP Open Document Open Filing 04 Jun 2024
424B3 Open Document Open Filing 424B3 04 Jun 2024 333-278809
EFFECT Open Document Open Filing 03 Jun 2024 333-278809
CORRESP Open Document Open Filing 31 May 2024
UPLOAD Open Document Open Filing 28 May 2024 333-279600
CORRESP Open Document Open Filing 23 May 2024
S-1/A Open Document | Data Open Filing S-1/A 23 May 2024 333-278809
UPLOAD Open Document Open Filing 22 May 2024 333-278809
S-1 Open Document | Data Open Filing S-1 22 May 2024 333-279600
CORRESP Open Document Open Filing 17 May 2024
S-1/A Open Document | Data Open Filing S-1/A 17 May 2024 333-278809
10-Q Open Document | Data Open Filing 10-Q 14 May 2024 31 Mar 2024 001-41013
8-K Open Document | Data Open Filing FORM 8-K 14 May 2024 14 May 2024 001-41013
UPLOAD Open Document Open Filing 06 May 2024 333-278809
4/A Open Document Open Filing 03 May 2024 26 Mar 2024
4/A Open Document Open Filing 03 May 2024 26 Mar 2024
SC 13G/A Open Document Open Filing 03 May 2024 005-93046
SC 13G/A Open Document Open Filing 29 Apr 2024 005-93046
8-K Open Document | Data Open Filing FORM 8-K 24 Apr 2024 23 Apr 2024 001-41013
S-1 Open Document | Data Open Filing S-1 19 Apr 2024 333-278809
8-K Open Document | Data Open Filing FORM 8-K 08 Apr 2024 04 Apr 2024 001-41013
SC 13G Open Document Open Filing 05 Apr 2024 005-93046
8-A12B/A Open Document Open Filing 8-A12B/A 05 Apr 2024 001-41013
SC 13G Open Document Open Filing 03 Apr 2024 005-93046
8-K Open Document | Data Open Filing FORM 8-K 01 Apr 2024 26 Mar 2024 001-41013
4 Open Document Open Filing OWNERSHIP DOCUMENT 28 Mar 2024 26 Mar 2024
3 Open Document Open Filing 28 Mar 2024 26 Mar 2024
4 Open Document Open Filing 27 Mar 2024 26 Mar 2024
4 Open Document Open Filing 27 Mar 2024 26 Mar 2024
4 Open Document Open Filing 27 Mar 2024 26 Mar 2024
4 Open Document Open Filing 27 Mar 2024 26 Mar 2024
4 Open Document Open Filing 27 Mar 2024 26 Mar 2024
4 Open Document Open Filing 27 Mar 2024 26 Mar 2024
4 Open Document Open Filing 27 Mar 2024 26 Mar 2024
4 Open Document Open Filing 27 Mar 2024 26 Mar 2024
4 Open Document Open Filing 27 Mar 2024 26 Mar 2024
3 Open Document Open Filing 27 Mar 2024 26 Mar 2024
3 Open Document Open Filing 27 Mar 2024 26 Mar 2024
3 Open Document Open Filing 27 Mar 2024 26 Mar 2024
3 Open Document Open Filing 27 Mar 2024 26 Mar 2024
3 Open Document Open Filing 27 Mar 2024 26 Mar 2024
3 Open Document Open Filing 27 Mar 2024 26 Mar 2024
3 Open Document Open Filing 27 Mar 2024 26 Mar 2024
3 Open Document Open Filing 27 Mar 2024 26 Mar 2024
3 Open Document Open Filing 27 Mar 2024 26 Mar 2024
3 Open Document Open Filing 27 Mar 2024 26 Mar 2024
25-NSE Open Document Open Filing 27 Mar 2024 001-41013
425 Open Document Open Filing FORM 425 22 Mar 2024 001-41013
SC 13G/A Open Document Open Filing 11 Mar 2024 005-93046
10-K Open Document | Data Open Filing 10-K 08 Mar 2024 31 Dec 2023 001-41013
8-K Open Document | Data Open Filing FORM 8-K 29 Feb 2024 27 Feb 2024 001-41013
425 Open Document Open Filing 425 15 Feb 2024 001-41013
EFFECT Open Document Open Filing 14 Feb 2024 333-275522
SC 13G Open Document Open Filing 14 Feb 2024 005-93046
SC 13G Open Document Open Filing SC 13G 14 Feb 2024 005-93046
424B3 Open Document Open Filing 424B3 14 Feb 2024 333-275522
SC 13G/A Open Document Open Filing 683 CAPITAL MANAGEMENT, LLC 14 Feb 2024 005-93046
SC 13G Open Document Open Filing 14 Feb 2024 005-93046
SC 13G Open Document Open Filing 14 Feb 2024 005-93046
SC 13G Open Document Open Filing SC 13G 13 Feb 2024 005-93046
CORRESP Open Document Open Filing 12 Feb 2024
SC 13G Open Document Open Filing SC 13G 09 Feb 2024 005-93046
CORRESP Open Document Open Filing 09 Feb 2024
S-4/A Open Document | Data Open Filing FORM S-4/A 09 Feb 2024 333-275522
SC 13G/A Open Document Open Filing FORM SC 13G/A 09 Feb 2024 005-93046
SC 13G/A Open Document Open Filing FORM SC 13G/A 07 Feb 2024 005-93046
CORRESP Open Document Open Filing 31 Jan 2024
S-4/A Open Document Open Filing S-4/A 31 Jan 2024 333-275522
SC 13G Open Document Open Filing SC 13G 31 Jan 2024 005-93046
UPLOAD Open Document Open Filing 25 Jan 2024 333-275522
8-K Open Document | Data Open Filing FORM 8-K 25 Jan 2024 19 Jan 2024 001-41013
SC 13G/A Open Document Open Filing CONCORD ACQUISITION CORP III 19 Jan 2024 005-93046
S-4/A Open Document Open Filing S-4/A 11 Jan 2024 333-275522
CORRESP Open Document Open Filing 10 Jan 2024
SC 13G/A Open Document Open Filing AMENDMENT NO. 1 09 Jan 2024 005-93046
UPLOAD Open Document Open Filing 05 Jan 2024 333-275522
SC 13G Open Document Open Filing 28 Dec 2023 005-93046
CORRESP Open Document Open Filing 21 Dec 2023
S-4/A Open Document | Data Open Filing FORM S-4/A 21 Dec 2023 333-275522
UPLOAD Open Document Open Filing 08 Dec 2023 333-275522
4 Open Document Open Filing OWNERSHIP DOCUMENT 17 Nov 2023 16 Nov 2023
4 Open Document Open Filing OWNERSHIP DOCUMENT 17 Nov 2023 16 Nov 2023
4 Open Document Open Filing OWNERSHIP DOCUMENT 17 Nov 2023 16 Nov 2023
4 Open Document Open Filing OWNERSHIP DOCUMENT 17 Nov 2023 16 Nov 2023
10-Q Open Document | Data Open Filing 10-Q 14 Nov 2023 30 Sep 2023 001-41013
S-4 Open Document | Data Open Filing FORM S-4 13 Nov 2023 333-275522
8-K Open Document | Data Open Filing FORM 8-K 13 Nov 2023 07 Nov 2023 001-41013
SC 13G Open Document Open Filing SC 13G 09 Nov 2023 005-93046
425 Open Document Open Filing 425 08 Nov 2023 001-41013
8-K Open Document | Data Open Filing FORM 8-K 08 Nov 2023 02 Nov 2023 001-41013
425 Open Document Open Filing 425 03 Nov 2023 001-41013
8-K Open Document | Data Open Filing FORM 8-K 03 Nov 2023 03 Nov 2023 001-41013
DEFA14A Open Document Open Filing DEFA14A 02 Nov 2023 001-41013
8-K Open Document | Data Open Filing FORM 8-K 02 Nov 2023 02 Nov 2023 001-41013
DEFA14A Open Document Open Filing DEFA14A 31 Oct 2023 001-41013
8-K Open Document | Data Open Filing 8-K 31 Oct 2023 31 Oct 2023 001-41013
8-K Open Document | Data Open Filing FORM 8-K 30 Oct 2023 30 Oct 2023 001-41013
DEFA14A Open Document Open Filing DEFA14A 25 Oct 2023 001-41013
8-K Open Document | Data Open Filing FORM 8-K 25 Oct 2023 25 Oct 2023 001-41013
DEF 14A Open Document Open Filing DEF 14A 13 Oct 2023 06 Nov 2023 001-41013
PRE 14A Open Document Open Filing PRE 14A 29 Sep 2023 29 Sep 2023 001-41013
10-Q Open Document | Data Open Filing 10-Q 10 Aug 2023 30 Jun 2023 001-41013
SC 13G Open Document Open Filing 16 May 2023 005-93046
10-Q Open Document | Data Open Filing 10-Q 11 May 2023 31 Mar 2023 001-41013
SC 13G Open Document Open Filing SC 13G 09 May 2023 005-93046
8-K Open Document | Data Open Filing FORM 8-K 08 May 2023 04 May 2023 001-41013
DEFA14A Open Document Open Filing DEFA14A 07 Apr 2023 001-41013
8-K Open Document | Data Open Filing FORM 8-K 07 Apr 2023 06 Apr 2023 001-41013
DEF 14A Open Document Open Filing DEF 14A 06 Apr 2023 04 May 2023 001-41013
UPLOAD Open Document Open Filing 04 Apr 2023
CORRESP Open Document Open Filing 04 Apr 2023
PRER14A Open Document Open Filing PRER14A 04 Apr 2023 001-41013
UPLOAD Open Document Open Filing 03 Apr 2023
PRE 14A Open Document Open Filing PRE 14A 27 Mar 2023 27 Mar 2023 001-41013
10-K Open Document | Data Open Filing 10-K 27 Feb 2023 31 Dec 2022 001-41013
SC 13G/A Open Document Open Filing FORM SC 13G/A 14 Feb 2023 005-93046
SC 13G/A Open Document Open Filing 10 Feb 2023 005-93046
SC 13G/A Open Document Open Filing CONCORD ACQUISITION CORP III 31 Jan 2023 005-93046
10-Q Open Document | Data Open Filing 10-Q 04 Nov 2022 30 Sep 2022 001-41013
10-Q Open Document | Data Open Filing 10-Q 12 Aug 2022 30 Jun 2022 001-41013
SC 13G Open Document Open Filing FORM SC 13G 27 May 2022 005-93046
10-Q Open Document | Data Open Filing 10-Q 09 May 2022 31 Mar 2022 001-41013
10-K Open Document | Data Open Filing 10-K 18 Mar 2022 31 Dec 2021 001-41013
SC 13G Open Document Open Filing SC 13G 14 Feb 2022 005-93046
SC 13G/A Open Document Open Filing 11 Feb 2022 005-93046
SC 13G/A Open Document Open Filing CONCORD ACQUISITION CORP III 03 Feb 2022 005-93046
10-Q Open Document | Data Open Filing 10-Q 16 Dec 2021 30 Sep 2021 001-41013
SC 13G Open Document Open Filing CONCORD ACQUISITION CORP III 18 Nov 2021 005-93046
SC 13G Open Document Open Filing 17 Nov 2021 005-93046
SC 13G Open Document Open Filing 16 Nov 2021 005-93046
8-K Open Document Open Filing FORM 8-K 15 Nov 2021 08 Nov 2021 001-41013
8-K Open Document Open Filing FORM 8-K 09 Nov 2021 03 Nov 2021 001-41013
424B4 Open Document Open Filing 424B4 05 Nov 2021 333-254789
EFFECT Open Document Open Filing 03 Nov 2021 333-254789
S-1MEF Open Document Open Filing FORM S-1MEF 03 Nov 2021 333-260751
3 Open Document Open Filing OWNERSHIP DOCUMENT 03 Nov 2021 03 Nov 2021
3 Open Document Open Filing OWNERSHIP DOCUMENT 03 Nov 2021 03 Nov 2021
3 Open Document Open Filing OWNERSHIP DOCUMENT 03 Nov 2021 03 Nov 2021
3 Open Document Open Filing OWNERSHIP DOCUMENT 03 Nov 2021 03 Nov 2021
3 Open Document Open Filing OWNERSHIP DOCUMENT 03 Nov 2021 03 Nov 2021
3 Open Document Open Filing OWNERSHIP DOCUMENT 03 Nov 2021 03 Nov 2021
3 Open Document Open Filing OWNERSHIP DOCUMENT 03 Nov 2021 03 Nov 2021
CERT Open Document Open Filing NYSE CERTIFICATION 03 Nov 2021 001-41013
8-A12B Open Document Open Filing 8-A12B 03 Nov 2021 001-41013
CORRESP Open Document Open Filing 01 Nov 2021
CORRESP Open Document Open Filing 01 Nov 2021
S-1/A Open Document Open Filing S-1/A 15 Oct 2021 333-254789
S-1/A Open Document Open Filing S-1/A 01 Jul 2021 333-254789
CORRESP Open Document Open Filing 07 May 2021
S-1/A Open Document Open Filing FORM S-1/A 07 May 2021 333-254789
UPLOAD Open Document Open Filing 22 Apr 2021
S-1 Open Document Open Filing S-1 26 Mar 2021 333-254789