Browse the latest SEC filings and forms submitted by GCT Semiconductor Holding, Inc. (GCTS). Access annual reports, quarterly statements, and other official disclosures.
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Search Company Filings →| Form | Filing Date | Description | Link |
|---|---|---|---|
| 424B5 | March 30, 2026 | - | View Document |
| 8-K | March 25, 2026 | CURRENT REPORT | View Document |
| 10-K | March 25, 2026 | 10-K | View Document |
| 4 | March 6, 2026 | - | View Document |
| 424B5 | March 2, 2026 | - | View Document |
| 8-K | Feb. 25, 2026 | CURRENT REPORT | View Document |
| SCHEDULE 13G/A | Feb. 13, 2026 | - | View Document |
| 8-K | Jan. 29, 2026 | CURRENT REPORT | View Document |
| 4 | Jan. 5, 2026 | - | View Document |
| 4 | Jan. 5, 2026 | - | View Document |
| 4 | Jan. 5, 2026 | - | View Document |
| 4 | Jan. 5, 2026 | - | View Document |
| 4 | Jan. 5, 2026 | - | View Document |
| 4 | Jan. 5, 2026 | - | View Document |
| 424B5 | Dec. 15, 2025 | 424B5 | View Document |
| 8-K | Dec. 15, 2025 | CURRENT REPORT | View Document |
| 4 | Nov. 28, 2025 | - | View Document |
| 4 | Nov. 24, 2025 | - | View Document |
| 10-Q | Nov. 12, 2025 | 10-Q | View Document |
| 8-K | Nov. 12, 2025 | CURRENT REPORT | View Document |
| 4 | Oct. 3, 2025 | - | View Document |
| 4 | Oct. 2, 2025 | - | View Document |
| 4 | Oct. 2, 2025 | - | View Document |
| 4 | Oct. 2, 2025 | - | View Document |
| 4 | Oct. 2, 2025 | - | View Document |
| 4 | Oct. 2, 2025 | - | View Document |
| 4 | Sept. 30, 2025 | - | View Document |
| 4 | Sept. 23, 2025 | - | View Document |
| 4 | Sept. 23, 2025 | - | View Document |
| 4 | Sept. 23, 2025 | - | View Document |
| 4 | Sept. 23, 2025 | - | View Document |
| 8-K | Sept. 19, 2025 | CURRENT REPORT | View Document |
| 4 | Sept. 16, 2025 | - | View Document |
| 8-K | Sept. 11, 2025 | CURRENT REPORT | View Document |
| 4 | Sept. 8, 2025 | - | View Document |
| SCHEDULE 13G/A | Aug. 22, 2025 | - | View Document |
| 4 | Aug. 19, 2025 | - | View Document |
| SCHEDULE 13G/A | Aug. 12, 2025 | - | View Document |
| 10-Q | Aug. 12, 2025 | 10-Q | View Document |
| 8-K | Aug. 12, 2025 | CURRENT REPORT | View Document |
| DEF 14A | Aug. 4, 2025 | DEF 14A | View Document |
| ARS | Aug. 4, 2025 | - | View Document |
| DEFA14A | Aug. 4, 2025 | - | View Document |
| PRE 14A | July 25, 2025 | PRE 14A | View Document |
| 4 | July 2, 2025 | - | View Document |
| 4 | July 2, 2025 | - | View Document |
| 4 | July 2, 2025 | - | View Document |
| 4 | July 2, 2025 | - | View Document |
| 4 | July 2, 2025 | - | View Document |
| 4 | July 2, 2025 | - | View Document |
| 4 | June 12, 2025 | - | View Document |
| EFFECT | June 10, 2025 | - | View Document |
| 4 | June 6, 2025 | - | View Document |
| 8-K | June 6, 2025 | CURRENT REPORT | View Document |
| POS AM | June 6, 2025 | - | View Document |
| EFFECT | June 6, 2025 | - | View Document |
| CORRESP | June 4, 2025 | - | View Document |
| S-3/A | May 30, 2025 | FORM S-3/A | View Document |
| CORRESP | May 30, 2025 | - | View Document |
| 4 | May 27, 2025 | - | View Document |
| 4 | May 21, 2025 | - | View Document |
| UPLOAD | May 20, 2025 | - | View Document |
| 8-K | May 16, 2025 | FORM 8-K | View Document |
| 424B5 | May 16, 2025 | 424B5 | View Document |
| 10-Q | May 14, 2025 | 10-Q | View Document |
| 8-K | May 14, 2025 | CURRENT REPORT | View Document |
| S-3/A | May 13, 2025 | FORM S-3/A | View Document |
| CORRESP | May 13, 2025 | - | View Document |
| EFFECT | May 2, 2025 | - | View Document |
| UPLOAD | May 1, 2025 | - | View Document |
| EFFECT | April 30, 2025 | - | View Document |
| POS AM | April 30, 2025 | - | View Document |
| UPLOAD | April 28, 2025 | - | View Document |
| CORRESP | April 28, 2025 | - | View Document |
| 4 | April 23, 2025 | - | View Document |
| S-3 | April 23, 2025 | FORM S-3 | View Document |
| S-3 | April 23, 2025 | FORM S-3 | View Document |
| 8-K | April 17, 2025 | CURRENT REPORT | View Document |
| SCHEDULE 13G | April 15, 2025 | - | View Document |
| 4/A | April 14, 2025 | - | View Document |
| EFFECT | April 9, 2025 | - | View Document |
| CORRESP | April 7, 2025 | - | View Document |
| 4/A | April 7, 2025 | - | View Document |
| UPLOAD | April 4, 2025 | - | View Document |
| 4 | April 2, 2025 | - | View Document |
| 4 | April 2, 2025 | - | View Document |
| 4 | April 2, 2025 | - | View Document |
| 4 | April 2, 2025 | - | View Document |
| 4 | April 2, 2025 | - | View Document |
| 4 | April 2, 2025 | - | View Document |
| S-3 | April 1, 2025 | S-3 | View Document |
| SCHEDULE 13G/A | March 28, 2025 | - | View Document |
| 4 | March 28, 2025 | OWNERSHIP DOCUMENT | View Document |
| 424B3 | March 26, 2025 | - | View Document |
| 424B3 | March 26, 2025 | - | View Document |
| 10-K | March 25, 2025 | 10-K | View Document |
| 8-K | March 25, 2025 | CURRENT REPORT | View Document |
| 4/A | Feb. 27, 2025 | - | View Document |
| 4/A | Feb. 27, 2025 | - | View Document |
| 4 | Feb. 21, 2025 | - | View Document |
| 4 | Feb. 21, 2025 | - | View Document |
| SCHEDULE 13G | Feb. 14, 2025 | - | View Document |
| 8-K | Jan. 29, 2025 | CURRENT REPORT | View Document |
| 4 | Jan. 2, 2025 | - | View Document |
| 4 | Jan. 2, 2025 | - | View Document |
| 4 | Jan. 2, 2025 | - | View Document |
| 4 | Jan. 2, 2025 | - | View Document |
| 4 | Jan. 2, 2025 | - | View Document |
| 4 | Jan. 2, 2025 | - | View Document |
| 4 | Dec. 16, 2024 | - | View Document |
| 4 | Nov. 21, 2024 | - | View Document |
| 4 | Nov. 21, 2024 | - | View Document |
| 4 | Nov. 21, 2024 | - | View Document |
| 4 | Nov. 21, 2024 | - | View Document |
| 4 | Nov. 21, 2024 | - | View Document |
| 4 | Nov. 21, 2024 | - | View Document |
| 424B3 | Nov. 18, 2024 | - | View Document |
| 424B3 | Nov. 15, 2024 | - | View Document |
| 424B3 | Nov. 15, 2024 | - | View Document |
| 8-K | Nov. 14, 2024 | 8-K | View Document |
| SC 13G/A | Nov. 14, 2024 | - | View Document |
| 10-Q | Nov. 14, 2024 | 10-Q | View Document |
| SC 13G/A | Nov. 13, 2024 | - | View Document |
| SC 13G/A | Nov. 13, 2024 | SC 13G/A | View Document |
| SC 13G/A | Nov. 12, 2024 | SC 13G/A | View Document |
| SC 13G | Nov. 12, 2024 | COWEN AND COMPANY, LLC | View Document |
| 4 | Sept. 27, 2024 | - | View Document |
| 424B3 | Sept. 27, 2024 | - | View Document |
| 424B3 | Sept. 27, 2024 | - | View Document |
| 8-K | Sept. 26, 2024 | CURRENT REPORT | View Document |
| 424B3 | Aug. 27, 2024 | 424B3 | View Document |
| 424B3 | Aug. 27, 2024 | 424B3 | View Document |
| 8-K | Aug. 26, 2024 | FORM 8-K | View Document |
| 4 | Aug. 23, 2024 | - | View Document |
| 424B3 | Aug. 16, 2024 | 424B3 | View Document |
| 424B3 | Aug. 16, 2024 | 424B3 | View Document |
| 8-K | Aug. 14, 2024 | FORM 8-K | View Document |
| 10-Q | Aug. 14, 2024 | 10-Q | View Document |
| 424B3 | July 10, 2024 | 424B3 | View Document |
| 8-K | July 10, 2024 | FORM 8-K | View Document |
| 4 | July 5, 2024 | - | View Document |
| 4 | July 3, 2024 | - | View Document |
| 4 | July 3, 2024 | - | View Document |
| 4 | July 3, 2024 | - | View Document |
| 4 | July 3, 2024 | - | View Document |
| 4 | July 3, 2024 | - | View Document |
| SC 13G/A | June 28, 2024 | SC 13G/A | View Document |
| S-8 | June 7, 2024 | S-8 | View Document |
| EFFECT | June 6, 2024 | - | View Document |
| CORRESP | June 4, 2024 | - | View Document |
| 424B3 | June 4, 2024 | 424B3 | View Document |
| EFFECT | June 3, 2024 | - | View Document |
| CORRESP | May 31, 2024 | - | View Document |
| UPLOAD | May 28, 2024 | - | View Document |
| S-1/A | May 23, 2024 | S-1/A | View Document |
| CORRESP | May 23, 2024 | - | View Document |
| S-1 | May 22, 2024 | S-1 | View Document |
| UPLOAD | May 22, 2024 | - | View Document |
| CORRESP | May 17, 2024 | - | View Document |
| S-1/A | May 17, 2024 | S-1/A | View Document |
| 10-Q | May 14, 2024 | 10-Q | View Document |
| 8-K | May 14, 2024 | FORM 8-K | View Document |
| UPLOAD | May 6, 2024 | - | View Document |
| 4/A | May 3, 2024 | - | View Document |
| 4/A | May 3, 2024 | - | View Document |
| SC 13G/A | May 3, 2024 | - | View Document |
| SC 13G/A | April 29, 2024 | - | View Document |
| 8-K | April 24, 2024 | FORM 8-K | View Document |
| S-1 | April 19, 2024 | S-1 | View Document |
| 8-K | April 8, 2024 | FORM 8-K | View Document |
| 8-A12B/A | April 5, 2024 | 8-A12B/A | View Document |
| SC 13G | April 5, 2024 | - | View Document |
| SC 13G | April 3, 2024 | - | View Document |
| 8-K | April 1, 2024 | FORM 8-K | View Document |
| 3 | March 28, 2024 | - | View Document |
| 4 | March 28, 2024 | OWNERSHIP DOCUMENT | View Document |
| 3 | March 27, 2024 | - | View Document |
| 4 | March 27, 2024 | - | View Document |
| 4 | March 27, 2024 | - | View Document |
| 4 | March 27, 2024 | - | View Document |
| 4 | March 27, 2024 | - | View Document |
| 4 | March 27, 2024 | - | View Document |
| 4 | March 27, 2024 | - | View Document |
| 4 | March 27, 2024 | - | View Document |
| 4 | March 27, 2024 | - | View Document |
| 4 | March 27, 2024 | - | View Document |
| 3 | March 27, 2024 | - | View Document |
| 3 | March 27, 2024 | - | View Document |
| 3 | March 27, 2024 | - | View Document |
| 3 | March 27, 2024 | - | View Document |
| 3 | March 27, 2024 | - | View Document |
| 3 | March 27, 2024 | - | View Document |
| 3 | March 27, 2024 | - | View Document |
| 3 | March 27, 2024 | - | View Document |
| 3 | March 27, 2024 | - | View Document |
| 25-NSE | March 27, 2024 | - | View Document |
| 425 | March 22, 2024 | FORM 425 | View Document |
| SC 13G/A | March 11, 2024 | - | View Document |
| 10-K | March 8, 2024 | 10-K | View Document |
| 8-K | Feb. 29, 2024 | FORM 8-K | View Document |
| 425 | Feb. 15, 2024 | 425 | View Document |
| SC 13G | Feb. 14, 2024 | - | View Document |
| SC 13G | Feb. 14, 2024 | - | View Document |
| SC 13G/A | Feb. 14, 2024 | 683 CAPITAL MANAGEMENT, LLC | View Document |
| 424B3 | Feb. 14, 2024 | 424B3 | View Document |
| SC 13G | Feb. 14, 2024 | SC 13G | View Document |
| SC 13G | Feb. 14, 2024 | - | View Document |
| EFFECT | Feb. 14, 2024 | - | View Document |
| SC 13G | Feb. 13, 2024 | SC 13G | View Document |
| CORRESP | Feb. 12, 2024 | - | View Document |
| SC 13G/A | Feb. 9, 2024 | FORM SC 13G/A | View Document |
| S-4/A | Feb. 9, 2024 | FORM S-4/A | View Document |
| CORRESP | Feb. 9, 2024 | - | View Document |
| SC 13G | Feb. 9, 2024 | SC 13G | View Document |
| SC 13G/A | Feb. 7, 2024 | FORM SC 13G/A | View Document |
| CORRESP | Jan. 31, 2024 | - | View Document |
| S-4/A | Jan. 31, 2024 | S-4/A | View Document |
| SC 13G | Jan. 31, 2024 | SC 13G | View Document |
| UPLOAD | Jan. 25, 2024 | - | View Document |
| 8-K | Jan. 25, 2024 | FORM 8-K | View Document |
| SC 13G/A | Jan. 19, 2024 | CONCORD ACQUISITION CORP III | View Document |
| S-4/A | Jan. 11, 2024 | S-4/A | View Document |
| CORRESP | Jan. 10, 2024 | - | View Document |
| SC 13G/A | Jan. 9, 2024 | AMENDMENT NO. 1 | View Document |
| UPLOAD | Jan. 5, 2024 | - | View Document |
| SC 13G | Dec. 28, 2023 | - | View Document |
| S-4/A | Dec. 21, 2023 | FORM S-4/A | View Document |
| CORRESP | Dec. 21, 2023 | - | View Document |
| UPLOAD | Dec. 8, 2023 | - | View Document |
| 4 | Nov. 17, 2023 | OWNERSHIP DOCUMENT | View Document |
| 4 | Nov. 17, 2023 | OWNERSHIP DOCUMENT | View Document |
| 4 | Nov. 17, 2023 | OWNERSHIP DOCUMENT | View Document |
| 4 | Nov. 17, 2023 | OWNERSHIP DOCUMENT | View Document |
| 10-Q | Nov. 14, 2023 | 10-Q | View Document |
| S-4 | Nov. 13, 2023 | FORM S-4 | View Document |
| 8-K | Nov. 13, 2023 | FORM 8-K | View Document |
| SC 13G | Nov. 9, 2023 | SC 13G | View Document |
| 8-K | Nov. 8, 2023 | FORM 8-K | View Document |
| 425 | Nov. 8, 2023 | 425 | View Document |
| 8-K | Nov. 3, 2023 | FORM 8-K | View Document |
| 425 | Nov. 3, 2023 | 425 | View Document |
| DEFA14A | Nov. 2, 2023 | DEFA14A | View Document |
| 8-K | Nov. 2, 2023 | FORM 8-K | View Document |
| DEFA14A | Oct. 31, 2023 | DEFA14A | View Document |
| 8-K | Oct. 31, 2023 | 8-K | View Document |
| 8-K | Oct. 30, 2023 | FORM 8-K | View Document |
| DEFA14A | Oct. 25, 2023 | DEFA14A | View Document |
| 8-K | Oct. 25, 2023 | FORM 8-K | View Document |
| DEF 14A | Oct. 13, 2023 | DEF 14A | View Document |
| PRE 14A | Sept. 29, 2023 | PRE 14A | View Document |
| 10-Q | Aug. 10, 2023 | 10-Q | View Document |
| SC 13G | May 16, 2023 | - | View Document |
| 10-Q | May 11, 2023 | 10-Q | View Document |
| SC 13G | May 9, 2023 | SC 13G | View Document |
| 8-K | May 8, 2023 | FORM 8-K | View Document |
| 8-K | April 7, 2023 | FORM 8-K | View Document |
| DEFA14A | April 7, 2023 | DEFA14A | View Document |
| DEF 14A | April 6, 2023 | DEF 14A | View Document |
| UPLOAD | April 4, 2023 | - | View Document |
| CORRESP | April 4, 2023 | - | View Document |
| PRER14A | April 4, 2023 | PRER14A | View Document |
| UPLOAD | April 3, 2023 | - | View Document |
| PRE 14A | March 27, 2023 | PRE 14A | View Document |
| 10-K | Feb. 27, 2023 | 10-K | View Document |
| SC 13G/A | Feb. 14, 2023 | FORM SC 13G/A | View Document |
| SC 13G/A | Feb. 10, 2023 | - | View Document |
| SC 13G/A | Jan. 31, 2023 | CONCORD ACQUISITION CORP III | View Document |
| 10-Q | Nov. 4, 2022 | 10-Q | View Document |
| 10-Q | Aug. 12, 2022 | 10-Q | View Document |
| SC 13G | May 27, 2022 | FORM SC 13G | View Document |
| 10-Q | May 9, 2022 | 10-Q | View Document |
| 10-K | March 18, 2022 | 10-K | View Document |
| SC 13G | Feb. 14, 2022 | SC 13G | View Document |
| SC 13G/A | Feb. 11, 2022 | - | View Document |
| SC 13G/A | Feb. 3, 2022 | CONCORD ACQUISITION CORP III | View Document |
| 10-Q | Dec. 16, 2021 | 10-Q | View Document |
| SC 13G | Nov. 18, 2021 | CONCORD ACQUISITION CORP III | View Document |
| SC 13G | Nov. 17, 2021 | - | View Document |
| SC 13G | Nov. 16, 2021 | - | View Document |
| 8-K | Nov. 15, 2021 | FORM 8-K | View Document |
| 8-K | Nov. 9, 2021 | FORM 8-K | View Document |
| 424B4 | Nov. 5, 2021 | 424B4 | View Document |
| 3 | Nov. 3, 2021 | OWNERSHIP DOCUMENT | View Document |
| 3 | Nov. 3, 2021 | OWNERSHIP DOCUMENT | View Document |
| 3 | Nov. 3, 2021 | OWNERSHIP DOCUMENT | View Document |
| CERT | Nov. 3, 2021 | NYSE CERTIFICATION | View Document |
| 8-A12B | Nov. 3, 2021 | 8-A12B | View Document |
| 3 | Nov. 3, 2021 | OWNERSHIP DOCUMENT | View Document |
| 3 | Nov. 3, 2021 | OWNERSHIP DOCUMENT | View Document |
| 3 | Nov. 3, 2021 | OWNERSHIP DOCUMENT | View Document |
| 3 | Nov. 3, 2021 | OWNERSHIP DOCUMENT | View Document |
| S-1MEF | Nov. 3, 2021 | FORM S-1MEF | View Document |
| EFFECT | Nov. 3, 2021 | - | View Document |
| CORRESP | Nov. 1, 2021 | - | View Document |
| CORRESP | Nov. 1, 2021 | - | View Document |
| S-1/A | Oct. 15, 2021 | S-1/A | View Document |
| S-1/A | July 1, 2021 | S-1/A | View Document |
| S-1/A | May 7, 2021 | FORM S-1/A | View Document |
| CORRESP | May 7, 2021 | - | View Document |
| UPLOAD | April 22, 2021 | - | View Document |
| S-1 | March 26, 2021 | S-1 | View Document |