Security key
98420X202
X4 Pharmaceuticals, Inc - Common Stock (XFOR)
CUSIP: 98420X202
Q4 2025 13F Holders as of 31 Dec 2025
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 85,919,846
- Total 13F value
- $343,681,474
- Share change
- +57,015,275
- SEC-reported price per share
- $4.00
- Number of holders
- 75
- Value change
- +$228,817,038
- Number of buys
- 53
- Number of sells
- 11
- Shares outstanding
- 87,101,353
Holder snapshot
6 signals
Security identity
1 source field
Report period
Q4 2025
Institutions
75
Top holders
10
XFOR full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2026
Previous quarter: Q3 2025
X4 Pharmaceuticals, Inc SEC filings
X4 Pharmaceuticals, Inc company facts
Broader feeds
Reporting periods
Holder history for CUSIP 98420X202
Recent filing periods:
Ownership snapshot
Top reported holders of XFOR - X4 Pharmaceuticals, Inc - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Empery Asset Management, LP
Disclosed value leader
Empery Asset Management, LP
Comparable rows
15/15
Latest evidence
31 Dec 2025
13D/G
13F
3/4/5
Lead comparable stake: 10%
13D/G row: Empery Asset Management, LP
Showing 1-6 of 15 holder rows.
Quick read
Empery Asset Management, LP leads the comparable SEC ownership view at 10%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Comparable ownership
Top 5
Empery Asset Management, LP
10%
Coastlands Capital LP
10%
Deep Track Capital, LP
10%
FMR LLC
9.7%
PERCEPTIVE ADVISORS LLC
7.6%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Empery Asset Management, LP |
13D/G
|
10%
|
$35,180,748
9,043,894 shares
|
+$25,462,897 | 31 Dec 2025 |
| Coastlands Capital LP |
13D/G
|
10%
|
$7,773,911
2,491,638 shares
|
+$37,418 | 03 Oct 2025 |
| Deep Track Capital, LP |
13D/G
13F
Company
|
10%
|
$4,568,300
2,366,995 shares
|
$0 | 12 Aug 2025 |
| FMR LLC |
13D/G
|
9.7%
|
$33,996,400
8,499,100 shares
|
$0 | 31 Oct 2025 |
| PERCEPTIVE ADVISORS LLC |
13D/G
|
7.6%
|
$20,980,760
6,064,680 shares
|
$0 | 27 Oct 2025 |
| Saturn V Capital Management LP |
13D/G
|
7.4%
|
$25,026,241
6,433,481 shares
|
$0 | 24 Oct 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
75
Shares
85,919,846
Rows available
75
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
40
Q4 2025 holders
75
Holder diff
35
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend