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