XFOR
X4 Pharmaceuticals, Inc
NASDAQ · Healthcare · Biotechnology · US
$3.58
+2.29%0
Insider buys (3m)
3
Insider sells (3m)
-$356.5K
Net value (3m)
-12.9%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Aug 13, 2026 | Craig Adam R · director, officer: Executive Chairman | Sale | 47,436 | $4.44 |
| Aug 13, 2026 | Volpone John · officer: President | Sale | 24,576 | $4.44 |
| Jul 1, 2026 | Gold Kelly · director | A-Award | 110,000 | $4.08 |
| Jul 1, 2026 | KIRSKE DAVID · officer: Chief Financial Officer | Sale | 8,543 | $4.26 |
| May 13, 2026 | KIRSKE DAVID · officer: Chief Financial Officer | Sale | 16,961 | $4.29 |
| Jan 7, 2026 | Bridger Gary · director | A-Award | 110,000 | $4.00 |
| Jan 5, 2026 | WYZGA MICHAEL S · director | A-Award | 110,000 | $4.00 |
| Jan 5, 2026 | Stewart Murray · director | A-Award | 110,000 | $4.00 |
| Jan 5, 2026 | de Craecker Francoise · director | A-Award | 110,000 | $4.00 |
| Oct 31, 2025 | KIRSKE DAVID · officer: Chief Financial Officer | A-Award | 1,552,769 | $1.42 |
| Oct 31, 2025 | Craig Adam R · director, officer: Executive Chairman | A-Award | 2,329,154 | $1.42 |
| Oct 31, 2025 | Volpone John · officer: President | A-Award | 2,329,154 | $1.42 |
| Oct 27, 2025 | Craig Adam R · director, officer: Executive Chairman | Purchase | 86,206 | $2.90 |
| Aug 14, 2025 | Craig Adam R · director, officer: Executive Chairman | A-Award | 289,881 | $0.00 |
| Aug 14, 2025 | KIRSKE DAVID · officer: Chief Financial Officer | A-Award | 1,073,249 | $1.42 |
| Aug 14, 2025 | KIRSKE DAVID · officer: Chief Financial Officer | A-Award | 352,800 | $3.14 |
| Aug 14, 2025 | KIRSKE DAVID · officer: Chief Financial Officer | A-Award | 193,254 | $0.00 |
| Aug 14, 2025 | Craig Adam R · director, officer: Executive Chairman | A-Award | 529,201 | $3.14 |
| Aug 14, 2025 | Craig Adam R · director, officer: Executive Chairman | A-Award | 1,609,873 | $1.42 |
| Aug 14, 2025 | Volpone John · officer: President | A-Award | 289,881 | $0.00 |
| Aug 14, 2025 | Volpone John · officer: President | A-Award | 529,201 | $3.14 |
| Aug 14, 2025 | Volpone John · officer: President | A-Award | 1,609,873 | $1.42 |
| Jul 3, 2025 | Thoren Natasha Fay · officer: Chief Legal Officer | A-Award | 3,333 | $0.00 |
| Jun 10, 2025 | WYZGA MICHAEL S · director | A-Award | 1,500 | $0.00 |
| Jun 10, 2025 | MCGIRR DAVID W J · director | A-Award | 1,500 | $0.00 |
| Jun 10, 2025 | Stewart Murray · director | A-Award | 1,500 | $0.00 |
| Jun 10, 2025 | de Craecker Francoise · director | A-Award | 1,500 | $0.00 |
| Jun 10, 2025 | Bridger Gary · director | A-Award | 1,500 | $0.00 |
| Jun 10, 2025 | Woods Keith · director | A-Award | 1,500 | $0.00 |
| Jun 3, 2025 | Baldry Mark · officer: Chief Commercial Officer | A-Award | 1,032 | $2.48 |
Institutional positioning
13F filings over the trailing two quarters
New 51Increased 45Reduced 38Sold out 26
| Filer | Action | Shares | Filed |
|---|---|---|---|
| MORGAN STANLEY | Reduced | 9,466,992 | May 15, 2026 |
| MORGAN STANLEY | Reduced | 9,461,279 | Aug 13, 2026 |
| EMPERY ASSET MANAGEMENT, LP | Reduced | 8,944,118 | May 8, 2026 |
| FMR LLC | Increased | 8,321,657 | Aug 13, 2026 |
| FMR LLC | Reduced | 8,103,400 | May 15, 2026 |
| Bain Capital Life Sciences Investors, LLC | Unchanged | 7,967,454 | Aug 14, 2026 |
| BAIN CAPITAL LIFE SCIENCES INVESTORS, LLC | Unchanged | 7,967,454 | May 15, 2026 |
| PERCEPTIVE ADVISORS LLC | Increased | 7,933,491 | Aug 14, 2026 |
| Saturn V Capital Management LP | Increased | 6,973,343 | Aug 14, 2026 |
| Empery Asset Management, LP | Reduced | 6,930,591 | Aug 11, 2026 |
| PERCEPTIVE ADVISORS LLC | Increased | 6,737,648 | May 29, 2026 |
| SATURN V CAPITAL MANAGEMENT LLC | Increased | 6,456,646 | May 15, 2026 |
| DEEP TRACK CAPITAL, LP | Increased | 6,339,535 | May 15, 2026 |
| Deep Track Capital, LP | Reduced | 5,878,757 | Aug 14, 2026 |
| BlackRock, Inc. | Increased | 5,554,906 | Aug 7, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Aug 13, 2026