Form4insider filings, from the source

Insider holders · CIK 0001501697

X4 Pharmaceuticals, Inc · XFOR

Every insider with a reported Table I holding at this company, ranked by their last-reported share count. A balance is only as fresh as its filing — the report date sits next to every row on purpose. ← Back to activity

InsiderDirect sharesIndirect sharesTotal reportedLast report (ET)From
Carmen Chang10% Owner—2,000,0002,000,000Jul 17, 2018 · 4:28 pm EDTForm 3
NEA 16 GP, LLC10% Owner2,000,000—2,000,000Nov 20, 2017 · 4:23 pm ESTForm 3
NEA Partners 16, L.P.10% Owner2,000,000—2,000,000Nov 20, 2017 · 4:23 pm ESTForm 3
Chetan Puttagunta10% Owner—2,000,0002,000,000Nov 20, 2017 · 4:26 pm ESTForm 3
New Enterprise Associates 16, L.P.10% Owner2,000,000—2,000,000Nov 20, 2017 · 4:23 pm ESTForm 3
Mohamad Makhzoumi10% Owner—2,000,0002,000,000Nov 20, 2017 · 4:25 pm ESTForm 3
Ali Behbahani10% Owner—2,000,0002,000,000Jul 17, 2018 · 4:26 pm EDTForm 3
Jon Sakoda10% Owner—2,000,0002,000,000Nov 20, 2017 · 4:26 pm ESTForm 3
Anthony A. Florence Jr.10% Owner—2,000,0002,000,000Nov 20, 2017 · 4:24 pm ESTForm 3
Peter W. Sonsini10% Owner—2,000,0002,000,000Nov 20, 2017 · 4:27 pm ESTForm 3
Ravi Viswanathan10% Owner—2,000,0002,000,000Nov 20, 2017 · 4:28 pm ESTForm 3
Forest Baskett10% Owner—2,000,0002,000,000Nov 20, 2017 · 4:24 pm ESTForm 3
Scott D Sandell10% Owner—2,000,0002,000,000Nov 20, 2017 · 4:27 pm ESTForm 3
David M Mott10% Owner—2,000,0002,000,000Nov 20, 2017 · 4:25 pm ESTForm 3
Peter J Barris10% Owner—2,000,0002,000,000Nov 20, 2017 · 4:23 pm ESTForm 3
OrbiMed Capital GP IV LLC10% Owner—1,868,9661,868,966Nov 20, 2017 · 5:32 pm ESTForm 4
Carl L GordonDirector—1,868,9661,868,966Nov 20, 2017 · 5:31 pm ESTForm 4
ORBIMED ADVISORS LLC10% Owner—1,868,9661,868,966Nov 20, 2017 · 5:32 pm ESTForm 4
Samuel D Isaly10% Owner—1,868,9661,868,966Nov 20, 2017 · 5:32 pm ESTForm 4
SV Life Sciences Fund VI Strategic Partners, L.P.10% Owner1,868,961—1,868,961Nov 20, 2017 · 5:37 pm ESTForm 4
SVLSF V, LLC10% Owner1,868,961—1,868,961Nov 20, 2017 · 5:37 pm ESTForm 4
SV Life Sciences Fund VI, L.P.10% Owner1,868,961—1,868,961Nov 20, 2017 · 5:37 pm ESTForm 4
SV Life Sciences Fund V Strategic Partners, L.P.10% Owner1,868,961—1,868,961Nov 20, 2017 · 5:37 pm ESTForm 4
SV LIFE SCIENCES FUND V LP10% Owner1,868,961—1,868,961Nov 20, 2017 · 5:37 pm ESTForm 4
Michael Jay RossDirector—1,868,9611,868,961Nov 20, 2017 · 5:28 pm ESTForm 4
NeoMed Innovation V Ltd10% Owner867,639—867,639Nov 20, 2017 · 6:15 pm ESTForm 4
NeoMed Management (Jersey) Ltd10% Owner867,639—867,639Nov 20, 2017 · 6:15 pm ESTForm 4
Claudio NessiDirector—867,639867,639Nov 20, 2017 · 5:43 pm ESTForm 4
NeoMed Innovation V L.P.10% Owner867,639—867,639Nov 20, 2017 · 6:15 pm ESTForm 4
Bill & Melinda Gates Foundation10% Owner722,179—722,179Nov 20, 2017 · 7:09 pm ESTForm 4
William J Maris10% Owner451,362—451,362Nov 20, 2017 · 5:38 pm ESTForm 4
GV 2016 GP, L.P.10% Owner—451,362451,362Nov 20, 2017 · 5:43 pm ESTForm 4
GV 2016 GP, L.L.C.10% Owner—451,362451,362Nov 20, 2017 · 5:43 pm ESTForm 4
GV 2016, L.P.10% Owner—451,362451,362Nov 20, 2017 · 5:43 pm ESTForm 4
Section 32 GP 1, LLC10% Owner451,362—451,362Nov 20, 2017 · 5:38 pm ESTForm 4
Section 32 Fund 1, LP10% Owner451,362—451,362Nov 20, 2017 · 5:38 pm ESTForm 4
Alphabet Inc.10% Owner—451,362451,362Nov 20, 2017 · 5:43 pm ESTForm 4
Tillman U. GerngrossDirector392,821—392,821Nov 20, 2017 · 5:32 pm ESTForm 4
EMBL Technology Fund II GmbH & Co. KG10% Owner370,454—370,454Nov 20, 2017 · 9:56 pm ESTForm 4
EMBL Ventures Verwaltungs GmbH10% Owner370,454—370,454Nov 20, 2017 · 9:56 pm ESTForm 4
Jan Adams10% Owner370,454—370,454Nov 20, 2017 · 9:56 pm ESTForm 4
Stefan Herr10% Owner370,454—370,454Nov 20, 2017 · 9:56 pm ESTForm 4
Frank Muhlenbeck10% Owner370,454—370,454Nov 20, 2017 · 9:56 pm ESTForm 4
Adam R CraigExecutive Chairman328,651—328,651Aug 13, 2026 · 4:10 pm EDTForm 4
Eszter NagyChief Scientific Officer273,464—273,464Nov 15, 2017 · 5:04 pm ESTForm 3
John VolponePresident265,305—265,305Aug 13, 2026 · 4:13 pm EDTForm 4
Michael GrayPresident, CEO and CFO250,000—250,000Nov 28, 2018 · 9:50 pm ESTForm 4
Alexandria Venture Investments, LLC10% Owner225,680—225,680Nov 20, 2017 · 10:01 am ESTForm 4
David KirskeChief Financial Officer167,750—167,750Jul 1, 2026 · 4:23 pm EDTForm 4
Anna-Maria & Stephen Kellen Foundation, Inc.10% Owner124,381—124,381Nov 20, 2017 · 5:42 pm ESTForm 4
Polaris Venture Partners V, L.P.10% Owner—18,03118,031Nov 20, 2017 · 5:28 pm ESTForm 4
Polaris Venture Management Co. V, L.L.C.10% Owner—18,03118,031Nov 20, 2017 · 5:28 pm ESTForm 4
Polaris Venture Partners Founders' Fund V, L.P.10% Owner—18,03118,031Nov 20, 2017 · 5:28 pm ESTForm 4
Polaris Venture Partners Entrepreneurs' Fund V, L.P.10% Owner—18,03118,031Nov 20, 2017 · 5:28 pm ESTForm 4
Polaris Venture Partners Special Founders' Fund V, L.P.10% Owner—18,03118,031Nov 20, 2017 · 5:28 pm ESTForm 4
Jonathan A Flint10% Owner—18,03118,031Nov 20, 2017 · 5:28 pm ESTForm 4
Terrance McGuireDirector—18,03118,031Nov 20, 2017 · 5:36 pm ESTForm 4

Balances come from each insider’s most recent filing that reports a Table I holding; an insider who left the company years ago still appears with their last-known figure and its date. Indirect totals collapse multiple vehicles (trusts, LLCs) into one number — open the filing for the breakdown. Shares as filed, not split-adjusted.