X4 Pharmaceuticals, Inc. (XFOR) has 20 known insider and institutional holders on record. The largest holder is Ragan Paula with 3,337,386 shares. Other notable holders include Craig Adam R and Volpone John.
Over the last 12 months, insiders have made 27 transactions in XFOR stock — 23 buys (valued at $16.93M) and 0 sells (valued at RSU Award). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
XFOR Insider Ownership
Top Holder
Ragan Paula
3,337,386 shares
Buys (12 mo)
23
$16.93M value
Sells (12 mo)
0
$0.00 value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Ragan Paula |
President and CEO |
3,337,386 |
2025-02-14 |
|
| 2 |
Craig Adam R |
Executive Chairman |
2,329,154 |
2025-10-31 |
|
| 3 |
Volpone John |
President |
2,329,154 |
2025-10-31 |
|
| 4 |
New Enterprise Associates 16, L.p. |
10 Percent Owner |
2,000,000 |
2017-11-20 |
|
| 5 |
Florence Anthony A. Jr. |
10 Percent Owner |
2,000,000 |
2017-11-20 |
|
| 6 |
Mott David M |
10 Percent Owner |
2,000,000 |
2017-11-20 |
|
| 7 |
Sakoda Jon |
10 Percent Owner |
2,000,000 |
2017-11-20 |
|
| 8 |
Barris Peter J |
10 Percent Owner |
2,000,000 |
2017-11-20 |
|
| 9 |
Behbahani Ali |
10 Percent Owner |
2,000,000 |
2018-07-17 |
|
| 10 |
Makhzoumi Mohamad |
10 Percent Owner |
2,000,000 |
2017-11-20 |
|
| 11 |
Puttagunta Chetan |
10 Percent Owner |
2,000,000 |
2017-11-20 |
|
| 12 |
Sonsini Peter W. |
10 Percent Owner |
2,000,000 |
2017-11-20 |
|
| 13 |
Sandell Scott D |
10 Percent Owner |
2,000,000 |
2017-11-20 |
|
| 14 |
Viswanathan Ravi |
10 Percent Owner |
2,000,000 |
2017-11-20 |
|
| 15 |
Baskett Forest |
10 Percent Owner |
2,000,000 |
2017-11-20 |
|
| 16 |
Chang Carmen |
10 Percent Owner |
2,000,000 |
2018-07-17 |
|
| 17 |
Kirske David |
Chief Financial Officer |
1,552,769 |
2025-10-31 |
|
| 18 |
Dibiase Mary |
Chief Operating Officer |
1,140,980 |
2025-02-14 |
|
| 19 |
Arbet-engels Christophe |
Chief Medical Officer |
864,207 |
2025-02-14 |
|
| 20 |
Mostafa Adam S. |
Chief Financial Officer |
850,000 |
2025-02-14 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-01-01 |
Bridger Gary |
Director |
RSU Award |
110,000 |
$4.00 |
$440K |
| 2026-01-01 |
De Craecker Francoise |
Director |
RSU Award |
110,000 |
$4.00 |
$440K |
| 2026-01-01 |
Stewart Murray |
Director |
RSU Award |
110,000 |
$4.00 |
$440K |
| 2026-01-01 |
Wyzga Michael S |
Director |
RSU Award |
110,000 |
$4.00 |
$440K |
| 2025-10-29 |
Volpone John |
President |
RSU Award |
2,329,154 |
$1.42 |
$3.31M |
| 2025-10-29 |
Craig Adam R |
Executive Chairman |
RSU Award |
2,329,154 |
$1.42 |
$3.31M |
| 2025-10-29 |
Kirske David |
Chief Financial Officer |
RSU Award |
1,552,769 |
$1.42 |
$2.2M |
| 2025-10-23 |
Craig Adam R |
Executive Chairman |
Informative Buy |
86,206 |
$2.90 |
$250K |
| 2025-08-14 |
Volpone John |
President |
RSU Award |
289,881 |
- |
- |
| 2025-08-12 |
Volpone John |
President |
RSU Award |
1,609,873 |
$1.42 |
$2.29M |
| 2025-08-12 |
Volpone John |
Officer |
Unknown |
- |
- |
- |
| 2025-08-14 |
Craig Adam R |
Executive Chairman |
RSU Award |
289,881 |
- |
- |
| 2025-08-12 |
Craig Adam R |
Executive Chairman |
RSU Award |
1,609,873 |
$1.42 |
$2.29M |
| 2025-08-12 |
Craig Adam R |
Executive Chairman |
Unknown |
- |
- |
- |
| 2025-08-14 |
Kirske David |
Chief Financial Officer |
RSU Award |
193,254 |
- |
- |
| 2025-08-12 |
Kirske David |
Chief Financial Officer |
RSU Award |
1,073,249 |
$1.42 |
$1.52M |
| 2025-08-12 |
Kirske David |
Officer |
Unknown |
- |
- |
- |
| 2025-05-20 |
Thoren Natasha Fay |
Chief Legal Officer |
RSU Award |
3,333 |
- |
- |
| 2025-06-09 |
Woods Keith |
Director |
RSU Award |
1,500 |
- |
- |
| 2025-06-09 |
De Craecker Francoise |
Director |
RSU Award |
1,500 |
- |
- |
| 2025-06-09 |
Stewart Murray |
Director |
RSU Award |
1,500 |
- |
- |
| 2025-06-09 |
Bridger Gary |
Director |
RSU Award |
1,500 |
- |
- |
| 2025-06-09 |
Mcgirr David W J |
Director |
RSU Award |
1,500 |
- |
- |
| 2025-06-09 |
Wyzga Michael S |
Director |
RSU Award |
1,500 |
- |
- |
| 2025-05-20 |
Thoren Natasha Fay |
Chief Legal Officer |
Unknown |
8,166 |
$32.70 |
$267.03K |