
X4 Pharmaceuticals, Inc.
XFORHealthcare|Biotechnology|US
$3.18
+0.11 (+3.58%)
DCF Value
$20.28
Tangible Book / Share
$0.86
Cash / Share
$1.48
Ownership Breakdown
59.4%
Float
99.1M
Shares Outstanding
58.9M
Float Shares
Major Holders (40)
Combined: 300.7%
Holders of 5%+ from their latest Schedule 13D/13G filing in the last two years. Percentages are as of each filing date.
| Holder | Type | % of Class | Shares | Filed | Filing |
|---|---|---|---|---|---|
| Morgan Stanley Investment Management Inc. | IA, CO | 10.20% | 8,884,304 | Mar 6, 2026 | 13D/G |
| Morgan Stanley | HC, CO | 10.20% | 8,884,338 | Mar 6, 2026 | 13D/G |
| Ryan M. Lane | HC, IN | 9.99% | 9,043,894 | Jan 15, 2026 | 13D/G |
| Empery Asset Management, LP | IA, PN | 9.99% | 9,043,894 | Jan 15, 2026 | 13D/G |
| Hoe Martin D. | HC, IN | 9.99% | 2,498,162 | Oct 21, 2025 | 13D/G |
| Lane Ryan M. | HC, IN | 9.99% | 2,498,162 | Oct 21, 2025 | 13D/G |
| Coastlands Capital Partners LP | Partnership | 9.99% | 2,491,638 | Oct 3, 2025 | 13D/G |
| Coastlands Capital LP | IA, PN | 9.99% | 2,491,638 | Oct 3, 2025 | 13D/G |
| Matthew D. Perry | HC, IN | 9.99% | 2,491,638 | Oct 3, 2025 | 13D/G |
| Coastlands Capital LLC | HC, OO | 9.99% | 2,491,638 | Oct 3, 2025 | 13D/G |
| Coastlands Capital GP LLC | Other | 9.99% | 2,491,638 | Oct 3, 2025 | 13D/G |
| David Kroin | HC, IN | 8.33% | 8,040,894 | Aug 14, 2026 | 13D/G |
| Deep Track Capital, LP | IA, OO | 8.33% | 8,040,894 | Aug 14, 2026 | 13D/G |
| Joseph Edelman | Individual | 8.10% | 8,085,006 | Aug 14, 2026 | 13D/G |
| Perceptive Life Sciences Master Fund, Ltd. | Corporation | 8.10% | 8,085,006 | Aug 14, 2026 | 13D/G |
| Perceptive Advisors LLC | Investment adviser | 8.10% | 8,085,006 | Aug 14, 2026 | 13D/G |
| BCLS II Equity Opportunities, LP | Partnership | 7.43% | 7,047,216 | Feb 17, 2026 | 13D/G |
| Xiaoying Tian | Individual | 7.36% | 6,433,481 | Feb 17, 2026 | 13D/G |
| Saturn V Capital Management LP | Investment adviser | 7.36% | 6,433,481 | Feb 17, 2026 | 13D/G |
| Deep Track Biotechnology Master Fund, Ltd. | Corporation | 7.18% | 6,923,680 | Aug 14, 2026 | 13D/G |
| Nea 18 Vge GP, LLC | Other | 6.20% | 5,057,610 | Oct 29, 2025 | 13D/G |
| Growth Equity Opportunities 18 VGE, LLC | Other | 6.20% | 5,057,610 | Oct 29, 2025 | 13D/G |
| NEA 18 Venture Growth Equity, L.P. | Partnership | 6.20% | 5,057,610 | Oct 29, 2025 | 13D/G |
| NEA Partners 18 VGE, L.P. | Partnership | 6.20% | 5,057,610 | Oct 29, 2025 | 13D/G |
| Ali Behbahani | Individual | 6.20% | 5,057,610 | Oct 29, 2025 | 13D/G |
| Carmen Chang | Individual | 6.20% | 5,057,610 | Oct 29, 2025 | 13D/G |
| Anthony A. Florence, Jr. | Individual | 6.20% | 5,057,610 | Oct 29, 2025 | 13D/G |
| Mohamad H. Makhzoumi | Individual | 6.20% | 5,057,610 | Oct 29, 2025 | 13D/G |
| Edward T. Mathers | Individual | 6.20% | 5,057,610 | Oct 29, 2025 | 13D/G |
| Scott D. Sandell | Individual | 6.20% | 5,057,610 | Oct 29, 2025 | 13D/G |
| Paul Walker | Individual | 6.20% | 5,057,610 | Oct 29, 2025 | 13D/G |
| Rick Yang | Individual | 6.20% | 5,057,610 | Oct 29, 2025 | 13D/G |
| BlackRock, Inc. | Holding company | 5.90% | 5,529,573 | Jul 30, 2026 | 13D/G |
| Ortav Yehudai | Individual | 5.80% | 5,227,222 | Feb 17, 2026 | 13D/G |
| Trails Edge Biotechnology Master Fund, LP | Partnership | 5.80% | 5,227,222 | Feb 17, 2026 | 13D/G |
| Trails Edge Capital Partners, LP | IA, PN | 5.80% | 5,227,222 | Feb 17, 2026 | 13D/G |
| VHCP Management EG, LLC | Other | 5.60% | 5,555,047 | Sep 21, 2026 | 13D/G |
| Bong Y. Koh | Individual | 5.60% | 5,555,047 | Sep 21, 2026 | 13D/G |
| Nimish Shah | Individual | 5.60% | 5,555,047 | Sep 21, 2026 | 13D/G |
| VHCP Management III, LLC | Other | 5.60% | 5,555,047 | Sep 21, 2026 | 13D/G |
Insider Trades (100)
Last 4 quarters: 550,000 acquired · 109,283 disposed
| Insider | Position | Date | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Craig Adam R | director, officer: Executive Chairman | Oct 16, 2026 | BUY | 4,600 | $2.58 | $11.9K | Form 4 |
| KIRSKE DAVID | Chief Financial Officer | Oct 1, 2026 | SELL | 11,767 | $2.86 | $33.7K | Form 4 |
| Volpone John | President | Aug 12, 2026 | SELL | 24,576 | $4.44 | $109.2K | Form 4 |
| Craig Adam R | director, officer: Executive Chairman | Aug 12, 2026 | SELL | 47,436 | $4.44 | $210.8K | Form 4 |
| KIRSKE DAVID | Chief Financial Officer | Jun 30, 2026 | SELL | 8,543 | $4.26 | $36.4K | Form 4 |
| Gold Kelly | director | Jul 1, 2026 | AWARD | 110,000 | $4.08 | $449.4K | Form 4 |
| Gold Kelly | director: | Jul 1, 2026 | OTHER | 0 | — | — | Form 4 |
| KIRSKE DAVID | Chief Financial Officer | May 12, 2026 | SELL | 16,961 | $4.29 | $72.8K | Form 4 |
| Bridger Gary | director | Jan 1, 2026 | AWARD | 110,000 | $4.00 | $440.0K | Form 4 |
| de Craecker Francoise | director | Jan 1, 2026 | AWARD | 110,000 | $4.00 | $440.0K | Form 4 |
| WYZGA MICHAEL S | director | Jan 1, 2026 | AWARD | 110,000 | $4.00 | $440.0K | Form 4 |
| Stewart Murray | director | Jan 1, 2026 | AWARD | 110,000 | $4.00 | $440.0K | Form 4 |
| Craig Adam R | director, officer: Executive Chairman | Oct 29, 2025 | AWARD | 2,329,154 | $1.42 | $3.3M | Form 4 |
| Volpone John | President | Oct 29, 2025 | AWARD | 2,329,154 | $1.42 | $3.3M | Form 4 |
| KIRSKE DAVID | Chief Financial Officer | Oct 29, 2025 | AWARD | 1,552,769 | $1.42 | $2.2M | Form 4 |
| Craig Adam R | director, officer: Executive Chairman | Oct 23, 2025 | BUY | 86,206 | $2.90 | $250.0K | Form 4 |
| Volpone John | President | Aug 12, 2025 | AWARD | 1,609,873 | $1.42 | $2.3M | Form 4 |
| Volpone John | President | Aug 14, 2025 | AWARD | 529,201 | $3.14 | $1.7M | Form 4 |
| Volpone John | President | Aug 14, 2025 | AWARD | 289,881 | — | — | Form 4 |
| Craig Adam R | director, officer: Executive Chairman | Aug 12, 2025 | OTHER | 0 | — | — | Form 4 |
| KIRSKE DAVID | officer | Aug 12, 2025 | OTHER | 0 | — | — | Form 4 |
| Craig Adam R | director, officer: Executive Chairman | Aug 12, 2025 | AWARD | 1,609,873 | $1.42 | $2.3M | Form 4 |
| Craig Adam R | director, officer: Executive Chairman | Aug 14, 2025 | AWARD | 529,201 | $3.14 | $1.7M | Form 4 |
| Craig Adam R | director, officer: Executive Chairman | Aug 14, 2025 | AWARD | 289,881 | — | — | Form 4 |
| KIRSKE DAVID | Chief Financial Officer | Aug 12, 2025 | AWARD | 1,073,249 | $1.42 | $1.5M | Form 4 |
| KIRSKE DAVID | Chief Financial Officer | Aug 14, 2025 | AWARD | 352,800 | $3.14 | $1.1M | Form 4 |
| KIRSKE DAVID | Chief Financial Officer | Aug 14, 2025 | AWARD | 193,254 | — | — | Form 4 |
| Volpone John | officer | Aug 12, 2025 | OTHER | 0 | — | — | Form 4 |
| Thoren Natasha Fay | Chief Legal Officer | May 20, 2025 | AWARD | 3,333 | — | — | Form 4 |
| Stewart Murray | director | Jun 9, 2025 | AWARD | 1,500 | — | — | Form 4 |
| de Craecker Francoise | director | Jun 9, 2025 | AWARD | 1,500 | — | — | Form 4 |
| Bridger Gary | director | Jun 9, 2025 | AWARD | 1,500 | — | — | Form 4 |
| Woods Keith | director | Jun 9, 2025 | AWARD | 1,500 | — | — | Form 4 |
| MCGIRR DAVID W J | director | Jun 9, 2025 | AWARD | 1,500 | — | — | Form 4 |
| WYZGA MICHAEL S | director | Jun 9, 2025 | AWARD | 1,500 | — | — | Form 4 |
| Thoren Natasha Fay | Chief Legal Officer | May 20, 2025 | OTHER | 0 | — | — | Form 4 |
| Thoren Natasha Fay | Chief Legal Officer | May 20, 2025 | OTHER | 8,166 | $32.70 | $267.0K | Form 4 |
| Baldry Mark | Chief Commercial Officer | May 16, 2025 | AWARD | 1,032 | $2.48 | $2.6K | Form 4 |
| Baldry Mark | Chief Commercial Officer | May 16, 2025 | BUY | 1,032 | $2.48 | $2.6K | Form 4 |
| Arbet-Engels Christophe | Chief Medical Officer | Feb 12, 2025 | AWARD | 850,000 | — | — | Form 4 |
| Mostafa Adam S. | Chief Financial Officer | Feb 12, 2025 | AWARD | 850,000 | — | — | Form 4 |
| Ragan Paula | director, officer: President and CEO | Feb 12, 2025 | AWARD | 2,250,000 | — | — | Form 4 |
| Baldry Mark | Chief Commercial Officer | Feb 12, 2025 | AWARD | 600,000 | — | — | Form 4 |
| Baldry Mark | Chief Commercial Officer | Nov 15, 2024 | BUY | 13,404 | $0.34 | $4.6K | Form 4 |
| Baldry Mark | Chief Commercial Officer | May 17, 2024 | BUY | 21,646 | $0.68 | $14.7K | Form 4 |
| DiBiase Mary | Chief Operating Officer | Feb 12, 2025 | AWARD | 650,000 | — | — | Form 4 |
| Ragan Paula | director, officer: President and CEO | Jan 23, 2025 | AWARD | 169,940 | — | — | Form 4 |
| Ragan Paula | director, officer: President and CEO | Jan 24, 2025 | SELL | 76,473 | $0.45 | $34.7K | Form 4 |
| Mostafa Adam S. | Chief Financial Officer | Jan 23, 2025 | AWARD | 74,773 | — | — | Form 4 |
| Mostafa Adam S. | Chief Financial Officer | Jan 24, 2025 | SELL | 74,773 | $0.45 | $33.9K | Form 4 |
| Baldry Mark | Chief Commercial Officer | Jan 23, 2025 | AWARD | 74,773 | — | — | Form 4 |
| Baldry Mark | Chief Commercial Officer | Jan 24, 2025 | SELL | 29,159 | $0.45 | $13.2K | Form 4 |
| DiBiase Mary | Chief Operating Officer | Jan 23, 2025 | AWARD | 61,178 | — | — | Form 4 |
| DiBiase Mary | Chief Operating Officer | Jan 24, 2025 | SELL | 22,258 | $0.45 | $10.1K | Form 4 |
| Arbet-Engels Christophe | Chief Medical Officer | Jan 23, 2025 | AWARD | 25,831 | — | — | Form 4 |
| Arbet-Engels Christophe | Chief Medical Officer | Jan 24, 2025 | SELL | 11,624 | $0.45 | $5.3K | Form 4 |
| Ragan Paula | director, officer: President and CEO | Nov 15, 2024 | SELL | 31,897 | $0.39 | $12.6K | Form 4 |
| Ragan Paula | director, officer: President and CEO | Oct 15, 2024 | SELL | 31,897 | $0.56 | $17.9K | Form 4 |
| Mostafa Adam S. | Chief Financial Officer | Oct 4, 2024 | AWARD | 230,645 | — | — | Form 4 |
| Mostafa Adam S. | Chief Financial Officer | Oct 7, 2024 | SELL | 230,645 | $0.55 | $126.9K | Form 4 |
| Baldry Mark | Chief Commercial Officer | Oct 4, 2024 | AWARD | 34,946 | — | — | Form 4 |
| Baldry Mark | Chief Commercial Officer | Oct 7, 2024 | SELL | 11,127 | $0.58 | $6.5K | Form 4 |
| Ragan Paula | director, officer: President and CEO | Oct 4, 2024 | AWARD | 532,081 | — | — | Form 4 |
| Ragan Paula | director, officer: President and CEO | Oct 7, 2024 | SELL | 239,436 | $0.55 | $131.5K | Form 4 |
| DiBiase Mary | Chief Operating Officer | Oct 4, 2024 | AWARD | 230,645 | — | — | Form 4 |
| DiBiase Mary | Chief Operating Officer | Oct 7, 2024 | SELL | 67,695 | $0.57 | $38.3K | Form 4 |
| Taveras Arthur | Chief Scientific Officer | Oct 4, 2024 | AWARD | 230,645 | — | — | Form 4 |
| Taveras Arthur | Chief Scientific Officer | Oct 7, 2024 | SELL | 76,920 | $0.56 | $43.3K | Form 4 |
| DiBiase Mary | Chief Operating Officer | Sep 9, 2024 | SELL | 2,642 | $0.66 | $1.7K | Form 4 |
| de Craecker Francoise | director | Jun 10, 2024 | AWARD | 45,000 | — | — | Form 4 |
| Aliski William | director | Jun 10, 2024 | AWARD | 45,000 | — | — | Form 4 |
| MCGIRR DAVID W J | director | Jun 10, 2024 | AWARD | 45,000 | — | — | Form 4 |
| Stewart Murray | director | Jun 10, 2024 | AWARD | 45,000 | — | — | Form 4 |
| Bridger Gary | director | Jun 10, 2024 | AWARD | 45,000 | — | — | Form 4 |
| Woods Keith | director | Jun 10, 2024 | AWARD | 45,000 | — | — | Form 4 |
| Lawton Alison Frances | director | Jun 10, 2024 | AWARD | 45,000 | — | — | Form 4 |
| WYZGA MICHAEL S | director | Jun 10, 2024 | AWARD | 45,000 | — | — | Form 4 |
| Taveras Arthur | Chief Scientific Officer | Mar 11, 2024 | SELL | 14,235 | $0.88 | $12.6K | Form 4 |
| Ragan Paula | director, officer: President and CEO | Mar 11, 2024 | SELL | 49,678 | $0.88 | $43.9K | Form 4 |
| Mostafa Adam S. | Chief Financial Officer | Mar 11, 2024 | SELL | 52,500 | $0.88 | $46.3K | Form 4 |
| DiBiase Mary | Chief Operating Officer | Mar 11, 2024 | SELL | 15,409 | $0.88 | $13.6K | Form 4 |
| Arbet-Engels Christophe | Chief Medical Officer | Feb 13, 2024 | AWARD | 180,816 | $0.92 | $166.5K | Form 4 |
| Arbet-Engels Christophe | Chief Medical Officer | Feb 13, 2024 | AWARD | 475,831 | $0.92 | $438.2K | Form 4 |
| Mostafa Adam S. | Chief Financial Officer | Feb 13, 2024 | AWARD | 523,414 | $0.92 | $482.1K | Form 4 |
| DiBiase Mary | Chief Operating Officer | Feb 13, 2024 | AWARD | 428,248 | $0.92 | $394.4K | Form 4 |
| Ragan Paula | director, officer: President and CEO | Feb 13, 2024 | AWARD | 1,189,578 | $0.92 | $1.1M | Form 4 |
| Baldry Mark | Chief Commercial Officer | Feb 13, 2024 | AWARD | 523,414 | $0.92 | $482.1K | Form 4 |
| Taveras Arthur | Chief Scientific Officer | Feb 13, 2024 | AWARD | 428,248 | $0.92 | $394.4K | Form 4 |
| DiBiase Mary | Chief Operating Officer | Feb 12, 2024 | SELL | 3,683 | $1.01 | $3.7K | Form 4 |
| Taveras Arthur | Chief Scientific Officer | Feb 12, 2024 | SELL | 787 | $1.01 | $792.67 | Form 4 |
| Ragan Paula | director, officer: President and CEO | Feb 12, 2024 | SELL | 21,695 | $1.01 | $21.9K | Form 4 |
| Mostafa Adam S. | Chief Financial Officer | Feb 12, 2024 | SELL | 27,721 | $1.01 | $28.0K | Form 4 |
| Ragan Paula | director, officer: President and CEO | Nov 1, 2023 | SELL | 199,531 | $0.73 | $145.7K | Form 4 |
| Ragan Paula | director, officer: President and CEO | Nov 3, 2023 | SELL | 39,906 | $0.90 | $35.9K | Form 4 |
| Mostafa Adam S. | Chief Financial Officer | Nov 1, 2023 | SELL | 230,645 | $0.73 | $168.4K | Form 4 |
| DiBiase Mary | Chief Operating Officer | Nov 1, 2023 | SELL | 67,695 | $0.73 | $49.4K | Form 4 |
| Baldry Mark | Chief Commercial Officer | Nov 1, 2023 | SELL | 10,257 | $0.73 | $7.5K | Form 4 |
| Taveras Arthur | Chief Scientific Officer | Nov 1, 2023 | SELL | 67,695 | $0.73 | $49.4K | Form 4 |
| Mostafa Adam S. | Chief Financial Officer | Oct 31, 2023 | AWARD | 230,645 | — | — | Form 4 |
| Baldry Mark | Chief Commercial Officer | Oct 31, 2023 | AWARD | 34,947 | — | — | Form 4 |