Syndax Pharmaceuticals Inc
SNDX- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001395937
In the last 90 days, Syndax Pharmaceuticals Inc insiders filed 0 open-market purchases and 1 sale; 242 institutions reported holding it in 13F filings for Q2 2026, worth $2.36B in total; no superinvestor holds it.
Holders of 5% or more of SNDX
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Syndax Pharmaceuticals Inc, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Kynam Capital Management, LP | 13G/A | 9.98%8.52M shares | – | Feb 14, 20251 filing | Feb 14, 2025 | SEC |
| BlackRock, Inc. | 13G/A | 7.80%6.74M shares | – | Apr 17, 20251 filing | Apr 17, 2025 | SEC |
| Goldman Sachs Group Inc | 13G/A | 6.50%5.58M shares | +1.30 ppfrom 5.20% | Feb 12, 20253 filings | Aug 13, 2025 | SEC |
| State Street Corp | 13G | 5.30%4.60M shares | New | Feb 9, 20261 filing | Feb 9, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
15 Schedule 13D and 13G filings on Syndax Pharmaceuticals Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| May 15, 20264:18 PM ET | Point72 Asset Management, L.P.and 2 others | 13G/A | 2.30%1.99M shares | −2.70 ppfrom 5.00%Below 5% | Mar 31, 2026 | SEC |
| Mar 27, 20261:15 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −7.16 ppfrom 7.16%Below 5% | Mar 13, 2026 | SEC |
| Feb 9, 20268:08 AM ET | State Street Corp | 13G | 5.30%4.60M shares | New | Dec 31, 2025 | SEC |
| Jan 30, 20262:43 PM ET | Vanguard Group Inc | 13G/A | 7.16%6.23M shares | – | Dec 31, 2025 | SEC |
| Aug 18, 20254:53 PM ET | Point72 Asset Management, L.P.and 2 others | 13G | 5.00%4.33M shares | +2.30 ppfrom 2.70% | Aug 15, 2025 | SEC |
| Aug 14, 20255:39 PM ET | Point72 Asset Management, L.P.and 2 others | 13G/A | 2.70%2.31M shares | −2.30 ppfrom 5.00%Below 5% | Jun 30, 2025 | SEC |
| Aug 13, 20255:52 PM ET | Goldman Sachs Group Incand 1 other | 13G/A | 6.50%5.58M shares | +1.30 ppfrom 5.20% | Jun 30, 2025 | SEC |
| May 9, 202512:34 PM ET | Goldman Sachs Group Incand 1 other | 13G/A | 5.20%4.51M shares | −1.80 ppfrom 7.00% | Mar 31, 2025 | SEC |
| May 7, 202511:25 AM ET | Morgan Stanleyand 1 other | 13G/A | 2.40%2.04M shares | −3.90 ppfrom 6.30%Below 5% | Mar 31, 2025 | SEC |
| Apr 17, 20259:35 AM ET | BlackRock, Inc. | 13G/A | 7.80%6.74M shares | – | Mar 31, 2025 | SEC |
| Mar 7, 202511:13 AM ET | Wellington Management Group LLPand 2 others | 13G/A | 0.00%35.7K shares | –Below 5% | Feb 28, 2025 | SEC |
| Feb 14, 20255:18 PM ET | Kynam Capital Management, LPand 2 others | 13G/A | 9.98%8.52M shares | – | Dec 31, 2024 | SEC |
| Feb 12, 202511:39 AM ET | Goldman Sachs Group Incand 1 other | 13G | 7.00%5.95M shares | New | Dec 31, 2024 | SEC |
| Feb 5, 202510:03 AM ET | Morgan Stanleyand 1 other | 13G | 6.30%5.36M shares | New | Dec 31, 2024 | SEC |
| Jan 22, 20255:50 PM ET | Point72 Asset Management, L.P.and 2 others | 13G | 5.00%4.28M shares | New | Jan 21, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Syndax Pharmaceuticals Inc shares.
No Form 144 notices for Syndax Pharmaceuticals Inc are on file.