In the last 12 months, insiders at X4 Pharmaceuticals, Inc ($XFOR) filed 119 transactions with the SEC: 5 open-market purchases totaling $301,686 and 46 sales totaling $1,482,414. Net insider sentiment: net selling.
X4 Pharmaceuticals, Inc operates in the Biological products, (no disgnostic substances) industry (Life sciences sector).
Most Active Insiders
- Ragan Paula (President and CEO) — 18 transactions totaling $546,151
- Mostafa Adam S. (Chief Financial Officer) — 15 transactions totaling $500,892
- Craig Adam R (Executive Chairman) — 5 transactions totaling $249,997
- DiBiase Mary (Chief Operating Officer) — 17 transactions totaling $143,944
- Stewart Murray (Interim Chief Medical Officer) — 2 transactions totaling $137,859
View all SEC Filings for X4 Pharmaceuticals, Inc (XFOR).
Set Up your own filters →Recent Insider Transactions
| Transaction Date | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 1, 2026 | Bridger Gary | Director | A | Stock Option (right to buy) | 110000 | $0.00 | 0.0000 | 43,272,773 | 0.00% | 0.25% |
| Jan. 1, 2026 | de Craecker Francoise | Director | A | Stock Option (right to buy) | 110000 | $0.00 | 0.0000 | 43,272,773 | 0.00% | 0.25% |
| Jan. 1, 2026 | WYZGA MICHAEL S | Director | A | Stock Option (right to buy) | 110000 | $0.00 | 0.0000 | 43,272,773 | 0.00% | 0.25% |
| Jan. 1, 2026 | Stewart Murray | Director | A | Stock Option (right to buy) | 110000 | $0.00 | 0.0000 | 43,272,773 | 0.00% | 0.25% |
| Oct. 29, 2025 | KIRSKE DAVID | Chief Financial Officer | A | Stock Option (right to buy) | 1552769 | $0.00 | 1,552,769.0000 | 43,272,773 | 9999.99% | 3.59% |
| Oct. 29, 2025 | Craig Adam R | Executive Chairman | A | Stock Option (right to buy) | 2329154 | $0.00 | 2,329,154.0000 | 43,272,773 | 9999.99% | 5.38% |
| Oct. 29, 2025 | Volpone John | President | A | Stock Option (right to buy) | 2329154 | $0.00 | 2,329,154.0000 | 43,272,773 | 9999.99% | 5.38% |
| Oct. 23, 2025 | Craig Adam R | Executive Chairman | P | Common Stock | 86206 | $2.90 | 376,087.0000 | 43,272,773 | 29.74% | 0.20% |
| Aug. 14, 2025 | KIRSKE DAVID | Chief Financial Officer | A | Stock Option (right to buy) | 352800 | $0.00 | 352,800.0000 | 201,062,211 | 9999.99% | 0.18% |
| Aug. 14, 2025 | Craig Adam R | Executive Chairman | A | Stock Option (right to buy) | 529201 | $0.00 | 529,201.0000 | 201,062,211 | 9999.99% | 0.26% |
| Aug. 14, 2025 | KIRSKE DAVID | Chief Financial Officer | A | Common Stock | 193254 | $0.00 | 193,254.0000 | 201,062,211 | 9999.99% | 0.10% |
| Aug. 12, 2025 | KIRSKE DAVID | Chief Financial Officer | A | Stock Option (right to buy) | 1073249 | $0.00 | 1,073,249.0000 | 201,062,211 | 9999.99% | 0.53% |
| Aug. 14, 2025 | Volpone John | President | A | Common Stock | 289881 | $0.00 | 289,881.0000 | 201,062,211 | 9999.99% | 0.14% |
| Aug. 12, 2025 | Volpone John | President | A | Stock Option (right to buy) | 1609873 | $0.00 | 1,609,873.0000 | 201,062,211 | 9999.99% | 0.80% |
| Aug. 14, 2025 | Volpone John | President | A | Stock Option (right to buy) | 529201 | $0.00 | 529,201.0000 | 201,062,211 | 9999.99% | 0.26% |
| Aug. 14, 2025 | Craig Adam R | Executive Chairman | A | Common Stock | 289881 | $0.00 | 289,881.0000 | 201,062,211 | 9999.99% | 0.14% |
| Aug. 12, 2025 | Craig Adam R | Executive Chairman | A | Stock Option (right to buy) | 1609873 | $0.00 | 1,609,873.0000 | 201,062,211 | 9999.99% | 0.80% |
| May 20, 2025 | Thoren Natasha Fay | Chief Legal Officer | A | Common Stock | 3333 | $0.00 | 9,462.0000 | 201,062,211 | 54.38% | 0.00% |
| June 9, 2025 | Bridger Gary | Director | A | Common Stock | 1500 | $0.00 | 4,722.0000 | 201,062,211 | 46.55% | 0.00% |
| June 9, 2025 | Stewart Murray | Director | A | Common Stock | 1500 | $0.00 | 7,883.0000 | 201,062,211 | 23.50% | 0.00% |
| June 9, 2025 | de Craecker Francoise | Director | A | Common Stock | 1500 | $0.00 | 4,722.0000 | 201,062,211 | 46.55% | 0.00% |
| June 9, 2025 | MCGIRR DAVID W J | Director | A | Common Stock | 1500 | $0.00 | 4,722.0000 | 201,062,211 | 46.55% | 0.00% |
| June 9, 2025 | WYZGA MICHAEL S | Director | A | Common Stock | 1500 | $0.00 | 5,555.0000 | 201,062,211 | 36.99% | 0.00% |
| June 9, 2025 | Woods Keith | Director | A | Common Stock | 1500 | $0.00 | 6,000.0000 | 201,062,211 | 33.33% | 0.00% |
| May 16, 2025 | Baldry Mark | Chief Commercial Officer | A | Common Stock | 1032 | $2.48 | 25,337.0000 | 201,062,211 | 4.25% | 0.00% |
| May 16, 2025 | Baldry Mark | Chief Commercial Officer | P | Common Stock | 1032 | $2.48 | 25,337.0000 | 201,062,211 | 4.25% | 0.00% |
| Feb. 12, 2025 | Mostafa Adam S. | Chief Financial Officer | A | Common Stock | 850000 | $0.00 | 850,000.0000 | 201,062,211 | 9999.99% | 0.42% |
| Feb. 12, 2025 | Ragan Paula | President and CEO | A | Common Stock | 2250000 | $0.00 | 3,337,386.0000 | 201,062,211 | 206.92% | 1.12% |
| May 17, 2024 | Baldry Mark | Chief Commercial Officer | P | Common Stock | 21646 | $0.68 | 115,769.0000 | 177,812,480 | 23.00% | 0.01% |
| Nov. 15, 2024 | Baldry Mark | Chief Commercial Officer | P | Common Stock | 13404 | $0.34 | 129,173.0000 | 6,695,509 | 11.58% | 0.20% |
| Feb. 12, 2025 | Baldry Mark | Chief Commercial Officer | A | Common Stock | 600000 | $0.00 | 729,173.0000 | 201,062,211 | 464.49% | 0.30% |
| Feb. 12, 2025 | DiBiase Mary | Chief Operating Officer | A | Common Stock | 650000 | $0.00 | 1,140,980.0000 | 201,062,211 | 132.39% | 0.32% |
| Feb. 12, 2025 | Arbet-Engels Christophe | Chief Medical Officer | A | Common Stock | 850000 | $0.00 | 864,207.0000 | 201,062,211 | 5982.97% | 0.42% |
| Jan. 24, 2025 | Arbet-Engels Christophe | Chief Medical Officer | S | Common Stock | 11624 | $0.45 | 14,207.0000 | 201,062,211 | 45.00% | 0.01% |
| Jan. 24, 2025 | DiBiase Mary | Chief Operating Officer | S | Common Stock | 22258 | $0.45 | 490,980.0000 | 201,062,211 | 4.34% | 0.01% |
| Jan. 23, 2025 | DiBiase Mary | Chief Operating Officer | A | Common Stock | 61178 | $0.00 | 513,238.0000 | 201,062,211 | 13.53% | 0.03% |
| Jan. 24, 2025 | Baldry Mark | Chief Commercial Officer | S | Common Stock | 29159 | $0.45 | 94,123.0000 | 201,062,211 | 23.65% | 0.01% |
| Jan. 23, 2025 | Baldry Mark | Chief Commercial Officer | A | Common Stock | 74773 | $0.00 | 123,282.0000 | 201,062,211 | 154.14% | 0.04% |
| Jan. 24, 2025 | Mostafa Adam S. | Chief Financial Officer | S | Common Stock | 74773 | $0.45 | 0.0000 | 201,062,211 | 100.00% | 0.04% |
| Jan. 23, 2025 | Mostafa Adam S. | Chief Financial Officer | A | Common Stock | 74773 | $0.00 | 74,773.0000 | 201,062,211 | 9999.99% | 0.04% |
| Jan. 24, 2025 | Ragan Paula | President and CEO | S | Common Stock | 76473 | $0.45 | 1,087,386.0000 | 201,062,211 | 6.57% | 0.04% |
| Jan. 23, 2025 | Ragan Paula | President and CEO | A | Common Stock | 169940 | $0.00 | 1,163,859.0000 | 201,062,211 | 17.10% | 0.08% |
| Jan. 23, 2025 | Arbet-Engels Christophe | Chief Medical Officer | A | Common Stock | 25831 | $0.00 | 25,831.0000 | 201,062,211 | 9999.99% | 0.01% |
| Nov. 15, 2024 | Ragan Paula | President and CEO | S | Common Stock | 31897 | $0.39 | 993,919.0000 | 6,695,509 | 3.11% | 0.48% |
| Oct. 15, 2024 | Ragan Paula | President and CEO | S | Common Stock | 31897 | $0.56 | 1,025,816.0000 | 6,695,509 | 3.02% | 0.48% |
| Oct. 7, 2024 | Taveras Arthur | Chief Scientific Officer | S | Common Stock | 76920 | $0.56 | 388,026.0000 | 6,695,509 | 16.54% | 1.15% |
| Oct. 7, 2024 | DiBiase Mary | Chief Operating Officer | S | Common Stock | 67695 | $0.57 | 452,060.0000 | 6,695,509 | 13.02% | 1.01% |
| Oct. 4, 2024 | Taveras Arthur | Chief Scientific Officer | A | Common Stock | 230645 | $0.00 | 464,946.0000 | 6,695,509 | 98.44% | 3.44% |
| Oct. 4, 2024 | Mostafa Adam S. | Chief Financial Officer | A | Common Stock | 230645 | $0.00 | 230,645.0000 | 6,695,509 | 9999.99% | 3.44% |
| Oct. 7, 2024 | Mostafa Adam S. | Chief Financial Officer | S | Common Stock | 230645 | $0.55 | 0.0000 | 6,695,509 | 100.00% | 3.44% |
| Oct. 4, 2024 | Baldry Mark | Chief Commercial Officer | A | Common Stock | 34946 | $0.00 | 59,636.0000 | 6,695,509 | 141.54% | 0.52% |
| Oct. 7, 2024 | Baldry Mark | Chief Commercial Officer | S | Common Stock | 11127 | $0.58 | 48,509.0000 | 6,695,509 | 18.66% | 0.17% |
| Oct. 4, 2024 | Ragan Paula | President and CEO | A | Common Stock | 532081 | $0.00 | 1,297,149.0000 | 6,695,509 | 69.55% | 7.95% |
| Oct. 7, 2024 | Ragan Paula | President and CEO | S | Common Stock | 239436 | $0.55 | 1,057,713.0000 | 6,695,509 | 18.46% | 3.58% |
| Oct. 4, 2024 | DiBiase Mary | Chief Operating Officer | A | Common Stock | 230645 | $0.00 | 519,755.0000 | 6,695,509 | 79.78% | 3.44% |
| Sept. 9, 2024 | DiBiase Mary | Chief Operating Officer | S | Common Stock | 2642 | $0.66 | 289,110.0000 | 177,812,480 | 0.91% | 0.00% |
| June 10, 2024 | WYZGA MICHAEL S | Director | A | Common Stock | 45000 | $0.00 | 121,667.0000 | 177,812,480 | 58.70% | 0.03% |
| June 10, 2024 | MCGIRR DAVID W J | Director | A | Common Stock | 45000 | $0.00 | 96,667.0000 | 177,812,480 | 87.10% | 0.03% |
| June 10, 2024 | Stewart Murray | Director | A | Common Stock | 45000 | $0.00 | 191,504.0000 | 177,812,480 | 30.72% | 0.03% |
| June 10, 2024 | Bridger Gary | Director | A | Common Stock | 45000 | $0.00 | 96,667.0000 | 177,812,480 | 87.10% | 0.03% |
| June 10, 2024 | Woods Keith | Director | A | Common Stock | 45000 | $0.00 | 135,000.0000 | 177,812,480 | 50.00% | 0.03% |
| June 10, 2024 | Lawton Alison Frances | Director | A | Common Stock | 45000 | $0.00 | 96,667.0000 | 177,812,480 | 87.10% | 0.03% |
| June 10, 2024 | de Craecker Francoise | Director | A | Common Stock | 45000 | $0.00 | 96,667.0000 | 177,812,480 | 87.10% | 0.03% |
| June 10, 2024 | Aliski William | Director | A | Common Stock | 45000 | $0.00 | 96,667.0000 | 177,812,480 | 87.10% | 0.03% |
| March 11, 2024 | Mostafa Adam S. | Chief Financial Officer | S | Common Stock | 52500 | $0.88 | 0.0000 | 177,812,480 | 100.00% | 0.03% |
| March 11, 2024 | DiBiase Mary | Chief Operating Officer | S | Common Stock | 15409 | $0.88 | 291,752.0000 | 177,812,480 | 5.02% | 0.01% |
| March 11, 2024 | Taveras Arthur | Chief Scientific Officer | S | Common Stock | 14235 | $0.88 | 234,301.0000 | 177,812,480 | 5.73% | 0.01% |
| March 11, 2024 | Ragan Paula | President and CEO | S | Common Stock | 49678 | $0.88 | 765,068.0000 | 177,812,480 | 6.10% | 0.03% |
| Feb. 13, 2024 | Arbet-Engels Christophe | Chief Medical Officer | A | Stock Appreciation Right | 180816 | $0.00 | 180,816.0000 | 177,812,480 | 9999.99% | 0.10% |
| Feb. 13, 2024 | Mostafa Adam S. | Chief Financial Officer | A | Stock Appreciation Right | 523414 | $0.00 | 523,414.0000 | 177,812,480 | 9999.99% | 0.29% |
| Feb. 13, 2024 | DiBiase Mary | Chief Operating Officer | A | Stock Appreciation Right | 428248 | $0.00 | 428,248.0000 | 177,812,480 | 9999.99% | 0.24% |
| Feb. 13, 2024 | Ragan Paula | President and CEO | A | Stock Appreciation Right | 1189578 | $0.00 | 1,189,578.0000 | 177,812,480 | 9999.99% | 0.67% |
| Feb. 13, 2024 | Baldry Mark | Chief Commercial Officer | A | Stock Appreciation Right | 523414 | $0.00 | 523,414.0000 | 177,812,480 | 9999.99% | 0.29% |
| Feb. 13, 2024 | Taveras Arthur | Chief Scientific Officer | A | Stock Appreciation Right | 428248 | $0.00 | 428,248.0000 | 177,812,480 | 9999.99% | 0.24% |
| Feb. 13, 2024 | Arbet-Engels Christophe | Chief Medical Officer | A | Stock Appreciation Right | 475831 | $0.00 | 475,831.0000 | 177,812,480 | 9999.99% | 0.27% |
| Feb. 12, 2024 | DiBiase Mary | Chief Operating Officer | S | Common Stock | 3683 | $1.01 | 307,161.0000 | 177,812,480 | 1.18% | 0.00% |
| Feb. 12, 2024 | Taveras Arthur | Chief Scientific Officer | S | Common Stock | 787 | $1.01 | 248,536.0000 | 177,812,480 | 0.32% | 0.00% |
| Feb. 12, 2024 | Ragan Paula | President and CEO | S | Common Stock | 21695 | $1.01 | 814,746.0000 | 177,812,480 | 2.59% | 0.01% |
| Feb. 12, 2024 | Mostafa Adam S. | Chief Financial Officer | S | Common Stock | 27721 | $1.01 | 52,500.0000 | 177,812,480 | 34.56% | 0.02% |
| Nov. 1, 2023 | Ragan Paula | President and CEO | S | Common Stock | 199531 | $0.73 | 876,347.0000 | 63,525,845 | 18.55% | 0.31% |
| Nov. 1, 2023 | Mostafa Adam S. | Chief Financial Officer | S | Common Stock | 230645 | $0.73 | 80,221.0000 | 63,525,845 | 74.19% | 0.36% |
| Nov. 1, 2023 | Baldry Mark | Chief Commercial Officer | S | Common Stock | 10257 | $0.73 | 24,690.0000 | 63,525,845 | 29.35% | 0.02% |
| Nov. 1, 2023 | Taveras Arthur | Chief Scientific Officer | S | Common Stock | 67695 | $0.73 | 249,323.0000 | 63,525,845 | 21.35% | 0.11% |
| Nov. 1, 2023 | DiBiase Mary | Chief Operating Officer | S | Common Stock | 67695 | $0.73 | 310,844.0000 | 63,525,845 | 17.88% | 0.11% |
| Nov. 3, 2023 | Ragan Paula | President and CEO | S | Common Stock | 39906 | $0.90 | 836,441.0000 | 63,525,845 | 4.55% | 0.06% |
| Oct. 31, 2023 | Baldry Mark | Chief Commercial Officer | A | Common Stock | 34947 | $0.00 | 34,947.0000 | 63,525,845 | 9999.99% | 0.06% |
| Oct. 31, 2023 | Mostafa Adam S. | Chief Financial Officer | A | Common Stock | 230645 | $0.00 | 310,866.0000 | 63,525,845 | 287.51% | 0.36% |
| Oct. 31, 2023 | Taveras Arthur | Chief Scientific Officer | A | Common Stock | 230645 | $0.00 | 317,018.0000 | 63,525,845 | 267.03% | 0.36% |
| Oct. 31, 2023 | Ragan Paula | President and CEO | A | Common Stock | 532081 | $0.00 | 1,075,878.0000 | 63,525,845 | 97.85% | 0.84% |
| Oct. 31, 2023 | DiBiase Mary | Chief Operating Officer | A | Common Stock | 230645 | $0.00 | 378,539.0000 | 63,525,845 | 155.95% | 0.36% |
| Oct. 16, 2023 | Woods Keith | Director | A | Common Stock | 90000 | $0.00 | 90,000.0000 | 63,525,845 | 9999.99% | 0.14% |
| Sept. 8, 2023 | DiBiase Mary | Chief Operating Officer | S | Common Stock | 2642 | $1.25 | 147,894.0000 | 63,525,845 | 1.76% | 0.00% |
| Aug. 31, 2023 | Arbet-Engels Christophe | Chief Medical Officer | A | Stock Option (right to buy) | 1250000 | $1.28 | 1,250,000.0000 | 63,525,845 | 9999.99% | 1.97% |
| Aug. 18, 2023 | WYZGA MICHAEL S | Director | P | Common Stock | 25000 | $1.20 | 76,667.0000 | 63,525,845 | 48.39% | 0.04% |
| Aug. 9, 2023 | Stewart Murray | Interim Chief Medical Officer | A | Common Stock | 269893 | $0.00 | 276,560.0000 | 63,525,845 | 4048.19% | 0.42% |
| Aug. 10, 2023 | Stewart Murray | Interim Chief Medical Officer | S | Common Stock | 130056 | $1.06 | 146,504.0000 | 63,525,845 | 47.03% | 0.20% |
| June 30, 2023 | DiBiase Mary | Chief Operating Officer | S | Common Stock | 464 | $1.89 | 150,536.0000 | 63,525,845 | 0.31% | 0.00% |
| June 30, 2023 | Mostafa Adam S. | Chief Financial Officer | S | Common Stock | 2641 | $1.89 | 80,221.0000 | 63,525,845 | 3.19% | 0.00% |
| June 23, 2023 | DiBiase Mary | Chief Operating Officer | S | Common Stock | 857 | $1.93 | 151,000.0000 | 63,525,845 | 0.56% | 0.00% |
| June 23, 2023 | Mostafa Adam S. | Chief Financial Officer | S | Common Stock | 5417 | $1.93 | 82,862.0000 | 63,525,845 | 6.14% | 0.01% |
| June 23, 2023 | Ragan Paula | President and CEO | S | Common Stock | 6724 | $1.92 | 543,797.0000 | 63,525,845 | 1.22% | 0.01% |
| June 15, 2023 | DiBiase Mary | Chief Operating Officer | S | Common Stock | 857 | $2.23 | 151,857.0000 | 63,525,845 | 0.56% | 0.00% |
| June 15, 2023 | Mostafa Adam S. | Chief Financial Officer | S | Common Stock | 5417 | $2.22 | 88,279.0000 | 63,525,845 | 5.78% | 0.01% |
| June 15, 2023 | Ragan Paula | President and CEO | S | Common Stock | 6724 | $2.23 | 550,521.0000 | 63,525,845 | 1.21% | 0.01% |
| June 13, 2023 | Aliski William | Director | A | Common Stock | 45000 | $0.00 | 51,667.0000 | 63,525,845 | 674.97% | 0.07% |
| June 13, 2023 | Bridger Gary | Director | A | Common Stock | 45000 | $0.00 | 51,667.0000 | 63,525,845 | 674.97% | 0.07% |
| June 13, 2023 | MCGIRR DAVID W J | Director | A | Common Stock | 45000 | $0.00 | 51,667.0000 | 63,525,845 | 674.97% | 0.07% |
| June 13, 2023 | WYZGA MICHAEL S | Director | A | Common Stock | 45000 | $0.00 | 51,667.0000 | 63,525,845 | 674.97% | 0.07% |
| June 13, 2023 | de Craecker Francoise | Director | A | Common Stock | 45000 | $0.00 | 51,667.0000 | 63,525,845 | 674.97% | 0.07% |
| June 13, 2023 | Lawton Alison Frances | Director | A | Common Stock | 45000 | $0.00 | 51,667.0000 | 63,525,845 | 674.97% | 0.07% |
| May 31, 2023 | Ragan Paula | President and CEO | S | Common Stock | 6292 | $1.95 | 557,245.0000 | 63,525,845 | 1.12% | 0.01% |
| March 10, 2023 | Ragan Paula | President and CEO | S | Common Stock | 49678 | $0.84 | 563,537.0000 | 63,525,845 | 8.10% | 0.08% |
| March 10, 2023 | Taveras Arthur | Chief Scientific Officer | S | Common Stock | 16806 | $0.84 | 86,373.0000 | 63,525,845 | 16.29% | 0.03% |
| March 10, 2023 | Mostafa Adam S. | Chief Financial Officer | S | Common Stock | 52500 | $0.84 | 93,696.0000 | 63,525,845 | 35.91% | 0.08% |
| March 10, 2023 | DiBiase Mary | Chief Operating Officer | S | Common Stock | 18192 | $0.84 | 152,714.0000 | 63,525,845 | 10.64% | 0.03% |
| Feb. 13, 2023 | Mostafa Adam S. | Chief Financial Officer | S | Common Stock | 27721 | $0.93 | 146,196.0000 | 63,525,845 | 15.94% | 0.04% |
| Feb. 13, 2023 | Ragan Paula | President and CEO | S | Common Stock | 21695 | $0.93 | 613,215.0000 | 63,525,845 | 3.42% | 0.03% |
| Feb. 13, 2023 | Taveras Arthur | Chief Scientific Officer | S | Common Stock | 928 | $0.93 | 103,179.0000 | 63,525,845 | 0.89% | 0.00% |
| Feb. 13, 2023 | DiBiase Mary | Chief Operating Officer | S | Common Stock | 4348 | $0.93 | 170,906.0000 | 63,525,845 | 2.48% | 0.01% |