# EDGAR Filing Document

**Accession Number:** 0001395937
**File Stem:** 0001193125-26-197892
**Filing Date:** 2026-4
**Character Count:** 1178
**Document Hash:** 9729abfcd43954c16eb2488cb5cec432
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-197892.hdr.sgml**: 20260430

**ACCESSION NUMBER**: 0001193125-26-197892

**CONFORMED SUBMISSION TYPE**: ARS

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260430

**DATE AS OF CHANGE**: 20260430

**EFFECTIVENESS DATE**: 20260430

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Syndax Pharmaceuticals Inc
- **CENTRAL INDEX KEY:** 0001395937
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 320162505
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** ARS
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-37708
- **FILM NUMBER:** 26927365

**BUSINESS ADDRESS:**
- **STREET 1:** 730 THIRD AVENUE
- **STREET 2:** 9TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017
- **BUSINESS PHONE:** 781-419-1400

**MAIL ADDRESS:**
- **STREET 1:** 730 THIRD AVENUE
- **STREET 2:** 9TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017

### Attached PDF Documents

**Attachment 1:** `sndx-2026-05-01_ars.pdf`

_No text found in this document._