# EDGAR Filing Document

**Accession Number:** 0001844505
**File Stem:** 9999999995-26-001008
**Filing Date:** 2026-3
**Character Count:** 1488
**Document Hash:** 27d61d0554acff67d688a669bec6fd36
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**9999999995-26-001008.hdr.sgml**: 20260401

**ACCESSION NUMBER**: 9999999995-26-001008

**CONFORMED SUBMISSION TYPE**: EFFECT

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260331

**DATE AS OF CHANGE**: 20260401

**EFFECTIVENESS DATE**: 20260331

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** QT IMAGING HOLDINGS, INC.
- **CENTRAL INDEX KEY:** 0001844505
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS [3845]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 861728920
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** EFFECT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-284317
- **FILM NUMBER:** 26824485

**BUSINESS ADDRESS:**
- **STREET 1:** 3 HAMILTON LANDING
- **STREET 2:** SUITE 160
- **CITY:** NOVATO
- **STATE:** CA
- **ZIP:** 94949
- **BUSINESS PHONE:** 415-842-7250

**MAIL ADDRESS:**
- **STREET 1:** 3 HAMILTON LANDING
- **STREET 2:** SUITE 160
- **CITY:** NOVATO
- **STATE:** CA
- **ZIP:** 94949

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** GigCapital5, Inc.
- **DATE OF NAME CHANGE:** 20210204

### UNITED STATES
### SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## Notice of Effectiveness

**Date:** March 31, 2026

**Accession Number:** 0001628280-26-020916

**Form Type:** POS AM

---

**CIK:** 0001844505

**Company Name:** QT IMAGING HOLDINGS, INC.

**File Number:** 333-284317