GCT Semiconductor Holding, Inc. SEC filings GCTS-WT
GCT Semiconductor Holding, Inc. has 336 filings in SEC EDGAR's recent list, going back to Mar 26, 2021. Its latest annual report, Form ARS, was filed on Aug 3, 2026 for the period ended Jul 28, 2026. The latest quarterly report (Form 10-Q) was filed on Aug 10, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Sep 18, 2026 (shareholder vote results). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Shareholder vote results
|
Sep 18, 2026 | Sep 17, 2026 |
| 8-K |
Current report
Officer or director change
|
Sep 15, 2026 | Sep 10, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 10, 2026 | Aug 10, 2026 |
| 10-Q | Quarterly report | Aug 10, 2026 | Jun 30, 2026 |
| ARS | Annual report to shareholders | Aug 3, 2026 | Jul 28, 2026 |
| DEFA14A | Additional proxy material | Aug 3, 2026 | — |
| DEF 14A | Proxy statement | Aug 3, 2026 | Sep 17, 2026 |
| 8-K/A |
Amended current report
Other events
|
Jun 18, 2026 | Jun 18, 2026 |
| 8-K |
Current report
Results of operations
|
Jun 18, 2026 | Jun 18, 2026 |
| 424B5 | Prospectus supplement | Jun 18, 2026 | — |
| 10-Q | Quarterly report | May 12, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 12, 2026 | May 12, 2026 |
| 424B5 | Prospectus supplement | Mar 30, 2026 | — |
| 10-K | Annual report | Mar 25, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 25, 2026 | Mar 25, 2026 |
| 424B5 | Prospectus supplement | Mar 2, 2026 | — |
| 8-K |
Current report
Material agreement
|
Feb 25, 2026 | Feb 24, 2026 |
| 8-K |
Current report
Other events
|
Jan 29, 2026 | Jan 29, 2026 |
| 424B5 | Prospectus supplement | Dec 15, 2025 | — |
| 8-K |
Current report
Material agreement, New debt
|
Dec 15, 2025 | Dec 15, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 12, 2025 | Nov 12, 2025 |
| 10-Q | Quarterly report | Nov 12, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Sep 19, 2025 | Sep 18, 2025 |
| 8-K |
Current report
Material agreement, New debt, Other events
|
Sep 11, 2025 | Sep 10, 2025 |
| 10-Q | Quarterly report | Aug 12, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 12, 2025 | Aug 12, 2025 |
| ARS | Annual report to shareholders | Aug 4, 2025 | Jul 27, 2025 |
| DEFA14A | Additional proxy material | Aug 4, 2025 | — |
| DEF 14A | Proxy statement | Aug 4, 2025 | Sep 18, 2025 |
| PRE 14A | Preliminary proxy statement | Jul 25, 2025 | Sep 18, 2025 |
| EFFECT | Filing | Jun 10, 2025 | — |
| EFFECT | Filing | Jun 6, 2025 | — |
| POS AM | Filing | Jun 6, 2025 | — |
| 8-K |
Current report
Other events
|
Jun 6, 2025 | Jun 6, 2025 |
| CORRESP | Letter to the SEC | Jun 4, 2025 | — |
| CORRESP | Letter to the SEC | May 30, 2025 | — |
| S-3/A | Form s-3/a | May 30, 2025 | — |
| UPLOAD | Letter from the SEC | May 20, 2025 | — |
| 8-K |
Current report
Material agreement, Other events
|
May 16, 2025 | May 15, 2025 |
| 424B5 | Prospectus supplement | May 16, 2025 | — |
| 8-K |
Current report
Results of operations
|
May 14, 2025 | May 14, 2025 |
| 10-Q | Quarterly report | May 14, 2025 | Mar 31, 2025 |
| CORRESP | Letter to the SEC | May 13, 2025 | — |
| S-3/A | Form s-3/a | May 13, 2025 | — |
| EFFECT | Filing | May 2, 2025 | — |
| UPLOAD | Letter from the SEC | May 1, 2025 | — |
| EFFECT | Filing | Apr 30, 2025 | — |
| POS AM | Filing | Apr 30, 2025 | — |
| CORRESP | Letter to the SEC | Apr 28, 2025 | — |
| UPLOAD | Letter from the SEC | Apr 28, 2025 | — |
| S-3 | Shelf registration | Apr 23, 2025 | — |
| S-3 | Shelf registration | Apr 23, 2025 | — |
| 8-K |
Current report
Other events
|
Apr 17, 2025 | Apr 16, 2025 |
| EFFECT | Filing | Apr 9, 2025 | — |
| CORRESP | Letter to the SEC | Apr 7, 2025 | — |
| UPLOAD | Letter from the SEC | Apr 4, 2025 | — |
| S-3 | Shelf registration | Apr 1, 2025 | — |
| 424B3 | Prospectus | Mar 26, 2025 | — |
| 424B3 | Prospectus | Mar 26, 2025 | — |
| 10-K | Annual report | Mar 25, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Mar 25, 2025 | Mar 25, 2025 |
| 8-K |
Current report
Material agreement
|
Jan 29, 2025 | Jan 24, 2025 |
| 424B3 | Prospectus | Nov 18, 2024 | — |
| 424B3 | Prospectus | Nov 15, 2024 | — |
| 424B3 | Prospectus | Nov 15, 2024 | — |
| 10-Q | Quarterly report | Nov 14, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 14, 2024 | Nov 14, 2024 |
| 424B3 | Prospectus | Sep 27, 2024 | — |
| 424B3 | Prospectus | Sep 27, 2024 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Sep 26, 2024 | Sep 26, 2024 |
| 424B3 | Prospectus | Aug 27, 2024 | — |
| 424B3 | Prospectus | Aug 27, 2024 | — |
| 8-K |
Current report
Officer or director change
|
Aug 26, 2024 | Aug 21, 2024 |
| 424B3 | Prospectus | Aug 16, 2024 | — |
| 424B3 | Prospectus | Aug 16, 2024 | — |
| 10-Q | Quarterly report | Aug 14, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 14, 2024 | Aug 14, 2024 |
| 424B3 | Prospectus | Jul 10, 2024 | — |
| 8-K |
Current report
Other events
|
Jul 10, 2024 | Jul 10, 2024 |
| S-8 | Employee stock plan registration | Jun 7, 2024 | — |
| EFFECT | Filing | Jun 6, 2024 | — |
| CORRESP | Letter to the SEC | Jun 4, 2024 | — |
| 424B3 | Prospectus | Jun 4, 2024 | — |
| EFFECT | Filing | Jun 3, 2024 | — |
| CORRESP | Letter to the SEC | May 31, 2024 | — |
| UPLOAD | Letter from the SEC | May 28, 2024 | — |
| CORRESP | Letter to the SEC | May 23, 2024 | — |
| S-1/A | Amended registration statement | May 23, 2024 | — |
| UPLOAD | Letter from the SEC | May 22, 2024 | — |
| S-1 | Registration statement | May 22, 2024 | — |
| CORRESP | Letter to the SEC | May 17, 2024 | — |
| S-1/A | Amended registration statement | May 17, 2024 | — |
| 10-Q | Quarterly report | May 14, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 14, 2024 | May 14, 2024 |
| UPLOAD | Letter from the SEC | May 6, 2024 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Apr 24, 2024 | Apr 23, 2024 |
| S-1 | Registration statement | Apr 19, 2024 | — |
| 8-K |
Current report
Auditor change
|
Apr 8, 2024 | Apr 4, 2024 |
| 8-A12B/A | Filing | Apr 5, 2024 | — |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Unregistered share sale, Change to shareholder rights, Change in control, Officer or director change, Bylaw or fiscal year change, Regulation FD disclosure, Other events
|
Apr 1, 2024 | Mar 26, 2024 |
| 25-NSE | Delisting notice | Mar 27, 2024 | — |
| 425 | Form 425 | Mar 22, 2024 | — |
| 10-K | Annual report | Mar 8, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Shareholder vote results
|
Feb 29, 2024 | Feb 27, 2024 |
| 425 | Filing | Feb 15, 2024 | — |
| EFFECT | Filing | Feb 14, 2024 | — |
| 424B3 | Prospectus | Feb 14, 2024 | — |
| CORRESP | Letter to the SEC | Feb 12, 2024 | — |
| CORRESP | Letter to the SEC | Feb 9, 2024 | — |
| S-4/A | Form s-4/a | Feb 9, 2024 | — |
| CORRESP | Letter to the SEC | Jan 31, 2024 | — |
| S-4/A | Filing | Jan 31, 2024 | — |
| UPLOAD | Letter from the SEC | Jan 25, 2024 | — |
| 8-K |
Current report
Listing notice, Regulation FD disclosure
|
Jan 25, 2024 | Jan 19, 2024 |
| S-4/A | Filing | Jan 11, 2024 | — |
| CORRESP | Letter to the SEC | Jan 10, 2024 | — |
| UPLOAD | Letter from the SEC | Jan 5, 2024 | — |
| CORRESP | Letter to the SEC | Dec 21, 2023 | — |
| S-4/A | Form s-4/a | Dec 21, 2023 | — |
| UPLOAD | Letter from the SEC | Dec 8, 2023 | — |
| 10-Q | Quarterly report | Nov 14, 2023 | Sep 30, 2023 |
| S-4 | Registration for a merger or exchange | Nov 13, 2023 | — |
| 8-K |
Current report
Material agreement, Bylaw or fiscal year change, Shareholder vote results, Other events
|
Nov 13, 2023 | Nov 7, 2023 |
| 425 | Filing | Nov 8, 2023 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Nov 8, 2023 | Nov 2, 2023 |
| 425 | Filing | Nov 3, 2023 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 3, 2023 | Nov 3, 2023 |
| DEFA14A | Additional proxy material | Nov 2, 2023 | — |
| 8-K |
Current report
Other events
|
Nov 2, 2023 | Nov 2, 2023 |
| DEFA14A | Additional proxy material | Oct 31, 2023 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 31, 2023 | Oct 31, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 30, 2023 | Oct 30, 2023 |
| DEFA14A | Additional proxy material | Oct 25, 2023 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 25, 2023 | Oct 25, 2023 |
| DEF 14A | Proxy statement | Oct 13, 2023 | Nov 6, 2023 |
| PRE 14A | Preliminary proxy statement | Sep 29, 2023 | Sep 29, 2023 |
| 10-Q | Quarterly report | Aug 10, 2023 | Jun 30, 2023 |
| 10-Q | Quarterly report | May 11, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Material agreement, Bylaw or fiscal year change, Shareholder vote results, Other events
|
May 8, 2023 | May 4, 2023 |
| DEFA14A | Additional proxy material | Apr 7, 2023 | — |
| 8-K |
Current report
Material agreement
|
Apr 7, 2023 | Apr 6, 2023 |
| DEF 14A | Proxy statement | Apr 6, 2023 | May 4, 2023 |
| UPLOAD | Letter from the SEC | Apr 4, 2023 | — |
| CORRESP | Letter to the SEC | Apr 4, 2023 | — |
| PRER14A | Filing | Apr 4, 2023 | — |
| UPLOAD | Letter from the SEC | Apr 3, 2023 | — |
| PRE 14A | Preliminary proxy statement | Mar 27, 2023 | Mar 27, 2023 |
| 10-K | Annual report | Feb 27, 2023 | Dec 31, 2022 |
| 10-Q | Quarterly report | Nov 4, 2022 | Sep 30, 2022 |
| 10-Q | Quarterly report | Aug 12, 2022 | Jun 30, 2022 |
| 10-Q | Quarterly report | May 9, 2022 | Mar 31, 2022 |
| 10-K | Annual report | Mar 18, 2022 | Dec 31, 2021 |
| 10-Q | Quarterly report | Dec 16, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Other events
|
Nov 15, 2021 | Nov 8, 2021 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale, Officer or director change, Bylaw or fiscal year change, Other events
|
Nov 9, 2021 | Nov 3, 2021 |
| 424B4 | Prospectus | Nov 5, 2021 | — |
| EFFECT | Filing | Nov 3, 2021 | — |
| S-1MEF | Form s-1mef | Nov 3, 2021 | — |
| CERT | Nyse certification | Nov 3, 2021 | — |
| 8-A12B | Filing | Nov 3, 2021 | — |
| CORRESP | Letter to the SEC | Nov 1, 2021 | — |
| CORRESP | Letter to the SEC | Nov 1, 2021 | — |
| S-1/A | Amended registration statement | Oct 15, 2021 | — |
| S-1/A | Amended registration statement | Jul 1, 2021 | — |
| CORRESP | Letter to the SEC | May 7, 2021 | — |
| S-1/A | Amended registration statement | May 7, 2021 | — |
| UPLOAD | Letter from the SEC | Apr 22, 2021 | — |
| S-1 | Registration statement | Mar 26, 2021 | — |
Showing 168 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Semiconductors & Related Devices (SIC 3674)
- Listed as
- GCTS (NYSE), GCTS-WT (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- San Jose, CA
- SEC filer status
- , Emerging growth company
- SEC CIK
- 1851961
- Former names
- Concord Acquisition Corp III (until Mar 28, 2024)
Other Semiconductors & Related Devices companies
- Nvidia Corp NVDA
- Broadcom Inc. AVGO
- Micron Technology Inc MU
- Advanced Micro Devices Inc AMD
- Intel Corp INTC
- Applied Materials Inc /DE AMAT
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- Arm Holdings PLC /UK ARM
Source: SEC EDGAR filings. This is company-reported data, not investment advice.