SNDX · Nasdaq · CIK 0001395937

Syndax Pharmaceuticals Inc

Syndax Pharmaceuticals Inc’s most recent SEC filing in our snapshot is a Form SCHEDULE 13G filed on Aug 7, 2026. In fiscal 2025 (year ended Dec 31, 2025) it reported revenue of $172.4M and net income of -$285.4M, according to its XBRL data on EDGAR. Its EDGAR record lists 16 Form 4 insider filings from the 12 months before our last refresh.

SEC EDGAR snapshot updated Oct 27, 2026, 11:27 PM EDT. See all filings on sec.gov.

Revenue, FY2025
$172.4M
Net income, FY2025
-$285.4M
Form 4 filings on record, past 12 months
16

Company overview

Legal name (as filed)
Syndax Pharmaceuticals Inc
Ticker
SNDX
SEC Central Index Key (CIK)
0001395937
Industry (SIC)
Pharmaceutical Preparations (code 2834)
Business address
NEW YORK, NY
State or country of incorporation
DE
Fiscal year ends
December 31
SEC filer category
Large accelerated filer
Position in SEC ticker list
#2317 of the 3,000 companies we track

Five-year financial highlights

Full-year figures from Syndax Pharmaceuticals Inc’s annual reports, as tagged in XBRL and published by the SEC. Amounts are in U.S. dollars; the fiscal year is named for the calendar year in which it ends.

Revenue
$139.7MFY2021$0FY2022$0FY2023$23.7MFY2024$172.4MFY2025
Net income
$24.9MFY2021-$149.3MFY2022-$209.4MFY2023-$318.8MFY2024-$285.4MFY2025
SNDX annual results
ItemFY2021
ended Dec 31, 2021		FY2022
ended Dec 31, 2022		FY2023
ended Dec 31, 2023		FY2024
ended Dec 31, 2024		FY2025
ended Dec 31, 2025
Revenue$139.7M$0$0$23.7M$172.4M
Net income$24.9M-$149.3M-$209.4M-$318.8M-$285.4M
Diluted EPS$0.46-$2.46-$2.98-$3.72-$3.29
Total assets$449.7M$497.2M$612.9M$724.8M$529.7M
Cash and equivalents$222.0M$74.4M$295.4M$154.1M$134.9M

XBRL tags used: revenue = RevenueFromContractWithCustomerExcludingAssessedTax; netIncome = NetIncomeLoss; assets = Assets; eps = EarningsPerShareDiluted; cash = CashAndCashEquivalentsAtCarryingValue. EPS is shown as originally reported for each year and may not be adjusted for later stock splits. A dash means the company did not report that item in a form we could match.

How to read these numbers

Revenue is the money a company brings in from selling its products and services; net income is what is left after all expenses, interest and taxes. Diluted EPS spreads net income across every share that could exist if options and convertible securities were exercised. Total assets and cash are balance-sheet figures measured on the last day of the fiscal year. For the full story — segment results, one-time charges, guidance — read Management’s Discussion and Analysis in the Form 10-K.

Latest key reports

The most recent filing of each major report type, even if it falls outside the 40 newest filings below.

SNDX latest annual, quarterly, current and proxy reports
FiledFormWhat it isOriginal
Feb 26, 202610-KAnnual report· period Dec 31, 2025Document · Index
Aug 4, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Aug 4, 20268-KResults of operations· period Aug 4, 2026Document · Index
Apr 30, 2026DEF 14ADefinitive proxy statement· period Apr 30, 2026Document · Index

Recent SEC filings

The 40 newest documents filed by or about Syndax Pharmaceuticals Inc, by form type:

4 ×11144 ×98-K ×7SCHEDULE 13G ×310-Q ×2DEFA14A ×2SCHEDULE 13G/A ×2ARS ×1DEF 14A ×1S-8 ×110-K ×1
SNDX recent filings
FiledFormWhat it isOriginal
Aug 7, 2026SCHEDULE 13GPassive beneficial ownership report (over 5%)Document · Index
Aug 4, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Aug 4, 20268-KResults of operations· period Aug 4, 2026Document · Index
Jul 14, 20268-KOther events· period Jul 14, 2026Document · Index
Jul 9, 20264Statement of changes in beneficial ownership (insider trade)· period Jul 8, 2026Document · Index
Jul 8, 2026144Notice of proposed sale of securitiesDocument · Index
Jun 12, 2026144Notice of proposed sale of securitiesDocument · Index
Jun 12, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 11, 2026Document · Index
Jun 11, 2026144Notice of proposed sale of securitiesDocument · Index
Jun 10, 20268-KMaterial agreement; New financial obligation; Unregistered equity sale· period Jun 10, 2026Document · Index
Jun 10, 20268-KDirector or officer change; Shareholder vote results· period Jun 10, 2026Document · Index
Jun 4, 2026DEFA14AAdditional proxy soliciting materialsDocument · Index
Jun 4, 20268-KMaterial agreement; New financial obligation; Unregistered equity sale; Other events· period Jun 3, 2026Document · Index
Jun 2, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 1, 2026Document · Index
Jun 2, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 1, 2026Document · Index
Jun 1, 2026144Notice of proposed sale of securitiesDocument · Index
Jun 1, 2026144Notice of proposed sale of securitiesDocument · Index
May 15, 2026SCHEDULE 13G/APassive beneficial ownership report (over 5%)Document · Index
Apr 30, 2026SCHEDULE 13GPassive beneficial ownership report (over 5%)Document · Index
Apr 30, 2026ARSARS· period Dec 31, 2025Document · Index
Apr 30, 2026DEFA14AAdditional proxy soliciting materialsDocument · Index
Apr 30, 2026DEF 14ADefinitive proxy statement· period Apr 30, 2026Document · Index
Apr 30, 202610-QQuarterly report· period Mar 31, 2026Document · Index
Apr 30, 20268-KResults of operations· period Apr 30, 2026Document · Index
Mar 27, 2026SCHEDULE 13G/APassive beneficial ownership report (over 5%)Document · Index
Feb 26, 2026S-8Registration of employee benefit plan securitiesDocument · Index
Feb 26, 202610-KAnnual report· period Dec 31, 2025Document · Index
Feb 26, 20268-KResults of operations· period Feb 26, 2026Document · Index
Feb 10, 20264Statement of changes in beneficial ownership (insider trade)· period Feb 9, 2026Document · Index
Feb 10, 20264Statement of changes in beneficial ownership (insider trade)· period Feb 9, 2026Document · Index
Feb 9, 2026144Notice of proposed sale of securitiesDocument · Index
Feb 9, 2026144Notice of proposed sale of securitiesDocument · Index
Feb 9, 2026SCHEDULE 13GPassive beneficial ownership report (over 5%)Document · Index
Feb 6, 2026144Notice of proposed sale of securitiesDocument · Index
Feb 6, 2026144Notice of proposed sale of securitiesDocument · Index
Feb 6, 20264Statement of changes in beneficial ownership (insider trade)· period Feb 4, 2026Document · Index
Feb 6, 20264Statement of changes in beneficial ownership (insider trade)· period Feb 4, 2026Document · Index
Feb 6, 20264Statement of changes in beneficial ownership (insider trade)· period Feb 4, 2026Document · Index
Feb 6, 20264Statement of changes in beneficial ownership (insider trade)· period Feb 4, 2026Document · Index
Feb 6, 20264Statement of changes in beneficial ownership (insider trade)· period Feb 4, 2026Document · Index

Insider filing activity

16 Form 4 filings appear in Syndax Pharmaceuticals Inc’s EDGAR record between Oct 28, 2025 and our last refresh. Most are reports by the company’s own directors, officers and 10% owners, but EDGAR also lists a Form 4 under a company when the company itself is the insider — for example, when it owns more than 10% of another public company. Foreign private issuers’ own insiders generally do not file Form 4. A high count is not by itself a signal: many Form 4s report routine stock awards, tax withholding or sales under pre-arranged Rule 10b5-1 plans. Open each filing to see the transaction code, share count and price. What a Form 4 shows.

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Source

  • U.S. Securities and Exchange Commission, EDGAR submissions for CIK 0001395937 and XBRL company facts. Syndax Pharmaceuticals Inc on EDGAR.
  • Snapshot updated Oct 27, 2026, 11:27 PM EDT. The SEC does not endorse OpenFilings. Company names and tickers are used only to identify the filer; no logos are shown.

Not investment advice. This page summarizes public SEC filings for information only. Figures may contain errors or omissions; confirm everything in the original filing before relying on it.