# EDGAR Filing Document

**Accession Number:** 0002098712
**File Stem:** 9999999995-26-000276
**Filing Date:** 2026-1
**Character Count:** 1282
**Document Hash:** 21065eefc5731b42685f9f1f7447bb46
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**9999999995-26-000276.hdr.sgml**: 20260126

**ACCESSION NUMBER**: 9999999995-26-000276

**CONFORMED SUBMISSION TYPE**: EFFECT

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260123

**DATE AS OF CHANGE**: 20260126

**EFFECTIVENESS DATE**: 20260123

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** GigCapital9 Corp.
- **CENTRAL INDEX KEY:** 0002098712
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 981894186
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** EFFECT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-291869
- **FILM NUMBER:** 26558307

**BUSINESS ADDRESS:**
- **STREET 1:** 1731 EMBARCADERO RD., SUITE 200
- **CITY:** PALO ALTO
- **STATE:** CA
- **ZIP:** 94303
- **BUSINESS PHONE:** (650) 276-7040

**MAIL ADDRESS:**
- **STREET 1:** 1731 EMBARCADERO RD., SUITE 200
- **CITY:** PALO ALTO
- **STATE:** CA
- **ZIP:** 94303

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

## Notice of Effectiveness

**Date:** January 23, 2026

**Time:** 16:00:00

**Form Type:** S-1

---

**CIK:** 0002098712

**Company Name:** GigCapital9 Corp.

**File Number:** 333-291869