Company · CIK 1844505 # QT IMAGING HOLDINGS, INC. | CIK | [1844505](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001844505) (SEC EDGAR) | | --- | --- | | Industry (SIC) | 3845 — Electromedical & Electrotherapeutic Apparatus | | Incorporated in | DE | | Business address | CA | | Listed | QTI (Nasdaq), QTIWW (OTC) | | First annual or quarterly report | 2021-11-15 | ## Offerings 5 registrations | Registration | Label and status | First filed | Last event | Filings | | --- | --- | --- | --- | --- | | 333-294705 | Shelf Effective | 2026-03-27 | 2026-05-15 | 3 | | 333-278460 | Registered company Effective | 2024-04-02 | 2026-03-31 | 6 | | 333-284317 | Registered company Effective | 2025-01-16 | 2026-03-31 | 4 | | 333-291237 | Registered company Effective | 2025-11-03 | 2026-03-31 | 4 | | 333-254038 | IPO Final prospectus | 2021-03-09 | 2021-09-27 | 8 | ## Filings 27 | Filed | Filing | Registration | Accession | | --- | --- | --- | --- | | 2026-05-15 | [424B5](https://www.sec.gov/Archives/edgar/data/1844505/000162828026035715/0001628280-26-035715-index.htm) Shelf takedown | 333-294705 | 0001628280-26-035715 | | 2026-04-03 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1844505/999999999526001087/9999999995-26-001087-index.htm) Declared effective | 333-294705 | 9999999995-26-001087 | | 2026-03-31 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1844505/999999999526001015/9999999995-26-001015-index.htm) Declared effective | 333-291237 | 9999999995-26-001015 | | 2026-03-31 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1844505/999999999526001008/9999999995-26-001008-index.htm) Declared effective | 333-284317 | 9999999995-26-001008 | | 2026-03-31 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1844505/999999999526001006/9999999995-26-001006-index.htm) Declared effective | 333-278460 | 9999999995-26-001006 | | 2026-03-27 | [S-3](https://www.sec.gov/Archives/edgar/data/1844505/000162828026021753/0001628280-26-021753-index.htm) Shelf registered | 333-294705 | 0001628280-26-021753 | | 2025-12-31 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1844505/999999999526000013/9999999995-26-000013-index.htm) Declared effective | 333-291237 | 9999999995-26-000013 | | 2025-12-29 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1844505/000162828025058960/0001628280-25-058960-index.htm) Amendment | 333-291237 | 0001628280-25-058960 | | 2025-11-03 | [S-1](https://www.sec.gov/Archives/edgar/data/1844505/000162828025048373/0001628280-25-048373-index.htm) Registration filed | 333-291237 | 0001628280-25-048373 | | 2025-02-05 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1844505/999999999525000323/9999999995-25-000323-index.htm) Declared effective | 333-284317 | 9999999995-25-000323 | | 2025-01-31 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1844505/000162828025003316/0001628280-25-003316-index.htm) Amendment | 333-284317 | 0001628280-25-003316 | | 2025-01-16 | [S-1](https://www.sec.gov/Archives/edgar/data/1844505/000162828025001723/0001628280-25-001723-index.htm) Registration filed | 333-284317 | 0001628280-25-001723 | | 2024-05-22 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1844505/999999999524001618/9999999995-24-001618-index.htm) Declared effective | 333-278460 | 9999999995-24-001618 | | 2024-05-20 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1844505/000119312524141936/0001193125-24-141936-index.htm) Amendment | 333-278460 | 0001193125-24-141936 | | 2024-05-16 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1844505/000119312524140730/0001193125-24-140730-index.htm) Amendment | 333-278460 | 0001193125-24-140730 | | 2024-04-24 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1844505/000119312524110124/0001193125-24-110124-index.htm) Amendment | 333-278460 | 0001193125-24-110124 | | 2024-04-02 | [S-1](https://www.sec.gov/Archives/edgar/data/1844505/000119312524084445/0001193125-24-084445-index.htm) Registration filed | 333-278460 | 0001193125-24-084445 | | 2024-02-06 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1844505/999999999524000322/9999999995-24-000322-index.htm) Declared effective | 333-269760 | 9999999995-24-000322 | | 2021-09-27 | [424B4](https://www.sec.gov/Archives/edgar/data/1844505/000119312521284317/0001193125-21-284317-index.htm) Final prospectus | 333-254038 | 0001193125-21-284317 | | 2021-09-23 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1844505/999999999521003635/9999999995-21-003635-index.htm) Declared effective | 333-254038 | 9999999995-21-003635 | | 2021-09-21 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1844505/000119312521278451/0001193125-21-278451-index.htm) Amendment | 333-254038 | 0001193125-21-278451 | | 2021-09-20 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1844505/000119312521276654/0001193125-21-276654-index.htm) Amendment | 333-254038 | 0001193125-21-276654 | | 2021-08-23 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1844505/000119312521254025/0001193125-21-254025-index.htm) Amendment | 333-254038 | 0001193125-21-254025 | | 2021-04-26 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1844505/000119312521131640/0001193125-21-131640-index.htm) Amendment | 333-254038 | 0001193125-21-131640 | | 2021-03-22 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1844505/000119312521087879/0001193125-21-087879-index.htm) Amendment | 333-254038 | 0001193125-21-087879 | | 2021-03-09 | [S-1](https://www.sec.gov/Archives/edgar/data/1844505/000119312521074922/0001193125-21-074922-index.htm) Registration filed | 333-254038 | 0001193125-21-074922 | | 2021-02-23 | [DRS](https://www.sec.gov/Archives/edgar/data/1844505/000095012321003079/0000950123-21-003079-index.htm) Draft made public | 377-04289 | 0000950123-21-003079 | [All filings of this company](https://equitycapital.markets/filings?cik=1844505) · [CSV](https://equitycapital.markets/filings.csv?cik=1844505) --- Source page: https://equitycapital.markets/company/1844505 · Data: U.S. SEC EDGAR · CC BY 4.0