Syndax Pharmaceuticals Inc

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Syndax Pharmaceuticals Inc
TickerSNDX
CIK #0001395937
CUSIP87164F105
SectorLife Sciences - Pharmaceutical Preparations
Address460 Totten Pond Road Suite 650, Waltham, MA 02451
Source [EDGAR]
Reg D Offering (Form D) Filed Raised Terms
Syndax Pharmaceuticals Inc 2015-08-28 61.3 M Exemption: 506(b) · Duration: One year or less · Revenue: Decline to Disclose
CIK Filing 2011 - 2026
[0001395937] 10-K
[0001395937] 10-Q
[0001395937] 3
[0001395937] 4
[0001395937] 8-K
[0001395937] D
[0001395937] SC 13D
[0001395937] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Vanguard Capital Management LLC Syndax Pharmaceuticals Inc [2026-04-30] 0.0
State Street Corp Syndax Pharmaceuticals Inc [2026-02-09] 0.0
Point72 Asset Management LP Syndax Pharmaceuticals Inc [2025-08-18] 0.0
Goldman Sachs Group Inc Syndax Pharmaceuticals Inc [2025-02-12] 0.0
Morgan Stanley Syndax Pharmaceuticals Inc [2025-02-05] 0.0
Point72 Asset Management LP Syndax Pharmaceuticals Inc [2025-01-22] 0.0
Kynam Capital Management LP Syndax Pharmaceuticals Inc [2024-02-14] 6.67
Vanguard Group Inc Syndax Pharmaceuticals Inc [2024-02-13] 5.11
Point72 Asset Management LP Syndax Pharmaceuticals Inc [2023-10-31] 4.5
Wellington Management Group LLP Syndax Pharmaceuticals Inc [2023-01-10] 11.72
Nantahala Capital Management LLC Syndax Pharmaceuticals Inc [2022-02-14] 5.8
Frazier Life Sciences Public Fund LP Syndax Pharmaceuticals Inc [2021-12-23] 3.2
Adage Capital Partners GP LLC Syndax Pharmaceuticals Inc [2021-05-10] 5.6
Access Industries Holdings LLC Syndax Pharmaceuticals Inc [2021-05-03] 5.56
BlackRock Inc Syndax Pharmaceuticals Inc [2021-02-02] 5.0
Avidity Partners Management LP Syndax Pharmaceuticals Inc [2020-11-04] 6.7
Boxer Capital LLC Syndax Pharmaceuticals Inc [2020-05-11] 0.0
Access Industries Holdings LLC Syndax Pharmaceuticals Inc [2019-10-09] 6.1
Adage Capital Partners GP LLC Syndax Pharmaceuticals Inc [2019-04-08] 5.72
BlackRock Inc Syndax Pharmaceuticals Inc [2019-02-08] 6.3
683 Capital Management LLC Syndax Pharmaceuticals Inc [2018-11-29] 5.0
Biotechnology Value Fund L P Syndax Pharmaceuticals Inc [2017-11-14] 3.9
MPM BioVentures IV QP LP Syndax Pharmaceuticals Inc [2017-02-09] 0.9
BlackRock Inc Syndax Pharmaceuticals Inc [2017-01-30] 8.0
Domain Partners VIII LP Syndax Pharmaceuticals Inc [2017-01-09] 4.2
Wellington Management Group LLP Syndax Pharmaceuticals Inc [2016-09-12] 11.0
FMR LLC Syndax Pharmaceuticals Inc [2016-04-11] 0.0
Form 3/4/5 Filer 2011 - 2026
Syndax Pharmaceuticals Inc
Botwood Nicholas AJ
Metzger Michael A
Goldan Keith A
Podlesak Dennis
Rizo Aleksandra
Jarrett Jennifer
Huber Martin H Jr
Katkin Keith
Legault Pierre
Gallagher Neil
Meury William
Morrison Briggs
Ordentlich Peter
Nolte Alexander
Madigan Catherine
Sabus Steve M
Meyers Michael L
Egros Fabrice
Karydas Daphne
Shea Richard P
BVF Inc/IL
Biotechnology Value Trading Fund OS LP
BVF Partners L P/IL
Lampert Mark N
BVF Partners OS Ltd
Biotechnology Value Fund L P
Biotechnology Value Fund II LP
Evnin Luke
Chen Henry
Sledge George W Jr
Royston IVOR
Kamdar Kim P
MPM Asset Management Investors BV4 LLC
Kailian Vaughn M
MPM BioVentures IV LLC
Foley Todd
MPM BioVentures IV Strategic Fund LP
MPM BioVentures IV GP LLC
Gadicke Ansbert
Scopa James Paul
MPM BioVentures IV QP LP
MPM BioVentures IV GmbH & Co Beteiligungs KG
Vitullo Nicole
Treu Jesse I
Domain Partners VIII LP
Blair James C
Dovey Brian H
Halak Brian K
DP VI Associates LP
Domain Partners VI LP
DP VIII Associates LP
Shah Nimesh
Domain Associates
Shaw Allan
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Metzger Michael A
Common Stock
2026-02-09 Sell 17,159 $21.03 360,854
Goldan Keith A
Common Stock
2026-02-09 Sell 3,410 $21.03 71,712
Metzger Michael A
Common Stock
2026-02-06 Sell 7,412 $20.62 152,835
Goldan Keith A
Common Stock
2026-02-06 Sell 2,082 $20.62 42,931
Botwood Nicholas AJ
Common Stock
2026-02-04 Grant 24,000 $0.00
Legault Pierre
Common Stock
2026-02-04 Grant 24,000 $0.00
Goldan Keith A
Stock Options (Right to buy) · derivative
2026-02-04 Grant 118,000 $20.43 2,410,740
Metzger Michael A
Common Stock
2026-02-04 Grant 73,000 $0.00
Rizo Aleksandra
Common Stock
2026-02-04 Grant 24,000 $0.00
Botwood Nicholas AJ
Stock Options (Right to buy) · derivative
2026-02-04 Grant 144,700 $20.43 2,956,221
Huber Martin H Jr
Common Stock
2026-02-04 Grant 24,000 $0.00
Metzger Michael A
Stock Options (Right to buy) · derivative
2026-02-04 Grant 440,000 $20.43 8,989,200
Podlesak Dennis
Common Stock
2026-02-04 Grant 48,000 $0.00
Metzger Michael A
Common Stock
2026-02-04 Grant 144,600 $0.00
Katkin Keith
Common Stock
2026-02-04 Grant 24,000 $0.00
Goldan Keith A
Common Stock
2026-02-04 Grant 21,500 $0.00
Jarrett Jennifer
Common Stock
2026-02-04 Grant 24,000 $0.00
Goldan Keith A
Common Stock
2026-02-04 Grant 30,750 $0.00
Botwood Nicholas AJ
Common Stock
2026-02-04 Grant 36,000 $0.00
Goldan Keith A
Common Stock
2026-01-30 Other 1,219 $8.48 10,337
showing 20 of 200 most recent transactions
13F Ownership Over TimeHoldersShares Held
2026-03-31 247 100,453,074
2025-12-31 232 99,528,747
2025-09-30 233 101,227,798
2025-06-30 220 102,018,467
2025-03-31 224 100,445,552
2024-12-31 220 98,052,172
2024-09-30 213 89,500,434
2024-06-30 197 87,347,274
2024-03-31 192 91,919,585
2023-12-31 180 89,742,417
2023-09-30 178 78,142,156
2023-06-30 167 69,806,514
Form 13F Holdings
Firm Period DFND Voting Shares
Hennion & Walsh Asset Management Inc [2026-06-30] SOLE 342,883 342,883
Y-Intercept Hong Kong Ltd [2026-06-30] SOLE 212,713 212,713
TEMA ETFS LLC [2026-06-30] SOLE 72,212 72,212
Assenagon Asset Management SA [2026-06-30] SOLE 41,737 41,737
Diversified Trust Co [2026-06-30] SOLE 0 32,420
Harbour Capital Advisors LLC [2026-06-30] SOLE 20,650 20,650
PSP Research LLC [2026-06-30] SOLE 0 20,000
Wealth Enhancement Advisory Services LLC [2026-06-30] SOLE 1,002 19,950
Post Resch Tallon Group Inc [2026-06-30] SOLE 0 12,500
Versant Capital Management Inc [2026-06-30] SOLE 844 844
Hickory Point Bank & Trust [2026-06-30] DFND 0 750
IFP Advisors LLC [2026-06-30] SOLE 669 669
Farther Finance Advisors LLC [2026-06-30] SOLE 0 426
Gamma Investing LLC [2026-06-30] DFND 417 417
True Wealth Design LLC [2026-06-30] SOLE 0 228
MassMutual Private Wealth & Trust FSB [2026-06-30] SOLE 71 71
Hughes Financial Services LLC [2026-06-30] SOLE 3 3
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