SNDX · NASDAQ · Biotechnology

Syndax Pharmaceuticals

Markets targeted therapies for acute leukemias and chronic graft-versus-host disease.

$19.39
After-hours close−0.15 (−0.77%)
At close$19.54(−3.08%)

Breakdown13F · Form 4

Institutions 125.11%Insiders 1.61%

A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.

Shares outstanding 88.61M · Float 80.23M · 90.5% free float

Top shareholders13F · 13D/G · Form 4

HolderShares% outstandingFormFiled
BlackRock, Inc.9.02M10.18%13FAug 7, 2026
Kynam Capital Management, LP8.05M9.09%13FAug 14, 2026
Goldman Sachs Group Inc5.86M6.61%13FAug 14, 2026
State Street Corporation5.66M6.40%13GAug 7, 2026
Bank of America Corp /DE/4.05M4.57%13FAug 14, 2026

Institutions13F, as of Jun 30, 2026

253 holders · 110.86M shares · 39 new positions · 134 increased · 77 reduced · 42 closed

HolderShares% outstandingChg q/qFiled
BlackRock, Inc.9.02M10.18%+765.6KAug 7, 2026
Kynam Capital Management, LP8.05M9.09%0Aug 14, 2026
Goldman Sachs Group Inc5.86M6.61%+864.5KAug 14, 2026
State Street Corp5.66M6.39%+1.23MAug 7, 2026
Bank of America Corp /DE/4.05M4.57%−204.7KAug 14, 2026
Vanguard Capital Management LLC3.93M4.43%+105.3KAug 13, 2026
Deerfield Management Company, L.P. (Series C)3.78M4.27%0Aug 14, 2026
Eversept Partners, LP2.80M3.16%−87.4KAug 14, 2026

Beneficial owners13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Kynam Capital Management, LP9.98%8.52M13GFeb 14, 2025
BlackRock, Inc.7.80%6.74M13GApr 17, 2025
The Goldman Sachs Group, Inc.6.50%5.58M13GAug 13, 2025
State Street Corporation6.40%5.66M13GAug 7, 2026
Vanguard Capital Management5.05%4.46M13GApr 30, 2026

InsidersForm 4

InsiderRoleShares% outstandingFiled
Michael A. Metzgerdirector, officer: Chief Executive Officer484.8K0.55%Jul 9, 2026
Dennis Podlesakdirector239.8K0.27%Feb 6, 2026
Keith A. Goldanofficer: Chief Financial Officer139.3K0.16%Jun 2, 2026
Keith Katkindirector124.0K0.14%Feb 6, 2026
Jennifer Jarrettdirector114.0K0.13%Feb 6, 2026
Pierre Legaultdirector114.0K0.13%Feb 6, 2026
Martin H. Jr. Huberdirector103.0K0.12%Feb 6, 2026
Nicholas A.J. Botwoodofficer: Head of R&D, CMO60.9K0.07%Jun 12, 2026
Aleksandra Rizodirector49.0K0.06%Feb 6, 2026

10 ten-percent owners hold 4.44M shares by Form 4, outside the officers-and-directors figure above · 5 people have not refiled in the last 18 months (1.36M shares), so they are not in the figure above

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Jul 8, 2026
Michael A. Metzgerdirector, officer: Chief Executive Officer
Sale32,375$24.24484,843
Jun 12, 2026
Nicholas A.J. Botwoodofficer: Head of R&D, CMO
Sale31,235$18.1460,885
Jun 11, 2026
Nicholas A.J. Botwoodofficer: Head of R&D, CMO
Sale34,280$18.0060,885
Jun 1, 2026
Michael A. Metzgerdirector, officer: Chief Executive Officer
Sale6,847$18.99484,843
Jun 1, 2026
Keith A. Goldanofficer: Chief Financial Officer
Sale1,177$18.99139,252
Feb 9, 2026
Keith A. Goldanofficer: Chief Financial Officer
Sale3,410$21.03140,429
Feb 9, 2026
Michael A. Metzgerdirector, officer: Chief Executive Officer
Sale17,159$21.03491,690
Feb 6, 2026
Keith A. Goldanofficer: Chief Financial Officer
Sale2,082$20.62143,839
Feb 6, 2026
Michael A. Metzgerdirector, officer: Chief Executive Officer
Sale7,412$20.62508,849
Sep 8, 2025
Michael A. Metzgerdirector, officer: Chief Executive Officer
Sale157,307$16.41298,661

CongressHouse and Senate disclosures

Not reported.