Quantum-Si Inc
QSINasdaqCIK 1816431TechnologyFiscal year ends Dec 31
Reports and events: 144 filings
Newest first, by EDGAR acceptance time (Eastern). Each filing’s page lists its documents on sec.gov and, for 10-K and 10-Q reports, the extracted sections.
What the forms are: 10-K, 10-Q, 8-K, Form 4, DEF 14A, Schedule 13D, Schedule 13G, amendments, accession numbers.
| Filed | Form | What it is | Accession number |
|---|---|---|---|
| 2026-10-1513:15 ET | 8-K | 8.01 Other events; 9.01 Financial statements and exhibits | 0001816431-26-000068 |
| 2026-10-0820:12 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001816431-26-000064 |
| 2026-09-2900:29 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001816431-26-000061 |
| 2026-08-2821:35 ET | SCHEDULE 13D/A | Ownership report, active investor, amended | 0001140361-26-034869 |
| 2026-08-1320:55 ET | 10-Q | Quarterly reportPeriod 2026-06-30 | 0001816431-26-000056 |
| 2026-08-1320:11 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001816431-26-000053 |
| 2026-07-2421:21 ET | 8-K | 3.01 Delisting notice | 0001816431-26-000049 |
| 2026-06-2420:06 ET | 8-K | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0001816431-26-000046 |
| 2026-05-1520:14 ET | 8-K | 5.07 Shareholder vote results | 0001816431-26-000037 |
| 2026-05-0720:47 ET | 10-Q | Quarterly reportPeriod 2026-03-31 | 0001816431-26-000034 |
| 2026-05-0720:13 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001816431-26-000032 |
| 2026-04-0120:06 ET | DEF 14A | Proxy statementPeriod 2026-04-01 | 0001816431-26-000021 |
| 2026-03-0321:34 ET | 10-K | Annual reportPeriod 2025-12-31 | 0001816431-26-000011 |
| 2026-03-0321:08 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001816431-26-000009 |
| 2025-12-2921:16 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001816431-25-000074 |
| 2025-11-2013:06 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001816431-25-000071 |
| 2025-11-0522:07 ET | 10-Q | Quarterly reportPeriod 2025-09-30 | 0001816431-25-000066 |
| 2025-11-0521:09 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001816431-25-000065 |
| 2025-09-2920:07 ET | 8-K | 1.01 Entry into a material agreement; 9.01 Financial statements and exhibits | 0001140361-25-036498 |
| 2025-09-2620:01 ET | 8-K | 1.01 Entry into a material agreement; 1.02 Termination of a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0001816431-25-000060 |
| 2025-09-1121:04 ET | SCHEDULE 13D/A | Ownership report, active investor, amended | 0001140361-25-034713 |
| 2025-08-0820:57 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001816431-25-000056 |
| 2025-08-0520:36 ET | 10-Q | Quarterly reportPeriod 2025-06-30 | 0001816431-25-000050 |
| 2025-08-0520:09 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001816431-25-000048 |
| 2025-07-0721:13 ET | 8-K | 1.01 Entry into a material agreement; 1.02 Termination of a material agreement; 8.01 Other events; 9.01 Financial statements and exhibits | 0001140361-25-025059 |
| 2025-05-1920:05 ET | 8-K | 5.07 Shareholder vote results | 0001140361-25-019766 |
| 2025-05-1520:36 ET | 10-Q | Quarterly reportPeriod 2025-03-31 | 0001816431-25-000040 |
| 2025-05-1520:11 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001816431-25-000038 |
| 2025-04-1020:49 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001816431-25-000032 |
| 2025-03-2020:07 ET | DEF 14A | Proxy statementPeriod 2025-05-16 | 0001816431-25-000024 |
| 2025-03-0321:19 ET | 10-K | Annual reportPeriod 2024-12-31 | 0001816431-25-000014 |
| 2025-03-0321:08 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001816431-25-000011 |
| 2025-01-0612:08 ET | 8-K | 1.01 Entry into a material agreement; 9.01 Financial statements and exhibits | 0001140361-25-000295 |
| 2024-12-3101:30 ET | SCHEDULE 13D/A | Ownership report, active investor, amended | 0001140361-24-050720 |
| 2024-12-1113:58 ET | 8-K | 1.01 Entry into a material agreement; 1.02 Termination of a material agreement; 9.01 Financial statements and exhibits | 0001140361-24-048977 |
| 2024-12-0911:05 ET | 8-K | 8.01 Other events; 9.01 Financial statements and exhibits | 0001140361-24-048732 |
| 2024-11-2221:06 ET | 8-K | 2.05 Exit or disposal costs | 0001140361-24-047639 |
| 2024-11-2100:30 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001140361-24-047429 |
| 2024-11-1221:57 ET | 10-Q | Quarterly reportPeriod 2024-09-30 | 0001816431-24-000020 |
| 2024-11-1221:48 ET | 8-K/A | 3.01 Delisting notice | 0001816431-24-000018 |
| 2024-11-1212:38 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001816431-24-000013 |
| 2024-11-0822:03 ET | 8-K | 3.01 Delisting notice | 0001816431-24-000009 |
| 2024-09-1720:24 ET | SC 13D/A | Ownership report, active investor, amended | 0001140361-24-041311 |
| 2024-08-2720:38 ET | 8-K | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001140361-24-038744 |
| 2024-08-1301:44 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001140361-24-036909 |
| 2024-08-0720:12 ET | 10-Q | Quarterly reportPeriod 2024-06-30 | 0001628280-24-035626 |
| 2024-08-0720:07 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-24-035608 |
| 2024-06-2520:05 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001140361-24-031295 |
| 2024-06-0720:06 ET | 8-K | 4.01 Change of auditor; 9.01 Financial statements and exhibits | 0001140361-24-029281 |
| 2024-05-3020:27 ET | 8-K | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001140361-24-028135 |
Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 24, 2026, 15:06 ET. Listed shows no prices and gives no investment advice.