# EDGAR Filing Document

**Accession Number:** 0001746466
**File Stem:** 0000000000-25-010000
**Filing Date:** 2025-9
**Character Count:** 1917
**Document Hash:** 49dab9657f90baa7a24266fbabf57d79
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000000000-25-010000.hdr.sgml**: 20260122

**ACCESSION NUMBER**: 0000000000-25-010000

**CONFORMED SUBMISSION TYPE**: UPLOAD

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20250916

**FILED FOR**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Equillium, Inc.
- **CENTRAL INDEX KEY:** 0001746466
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 821554746
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** UPLOAD
- **SEC FILE NUMBER:** 001-38692

**BUSINESS ADDRESS:**
- **STREET 1:** 2223 AVENIDA DE LA PLAYA
- **STREET 2:** SUITE 105
- **CITY:** LA JOLLA
- **STATE:** CA
- **ZIP:** 92037
- **BUSINESS PHONE:** (858) 412-5302

**MAIL ADDRESS:**
- **STREET 1:** 2223 AVENIDA DE LA PLAYA
- **STREET 2:** SUITE 105
- **CITY:** LA JOLLA
- **STATE:** CA
- **ZIP:** 92037
**PUBLIC REFERENCE ACCESSION NUMBER**: 0000950170-25-045726

## Text-Extract

```

                                                        September 16, 2025

Bruce Steel
Chief Executive Officer
Equillium, Inc.
2223 Avenida de la Playa
Suite 105
La Jolla, CA 92037

       Re: Equillium, Inc.
           Form 10-K for the Year Ended December 31, 2024
           File No. 001-38692
Dear Bruce Steel:

       We have completed our review of your filing. We remind you that the
company and
its management are responsible for the accuracy and adequacy of their
disclosures,
notwithstanding any review, comments, action or absence of action by the staff.

                                                        Sincerely,

                                                        Division of Corporation
Finance
                                                        Office of Life Sciences

```

### Attached PDF Documents

**Attachment 1:** `filename1`

_No text found in this document._