Stocks · Health care · Biological Products, (No Diagnostic Substances)

X4 Pharmaceuticals, Inc

XFOR Clue Score49
United States Fiscal year ends December CIK 0001501697
2.91
+4.30%
Close, 9 Oct 2026 · USD

Price, with every insider trade on it

Closing prices, 12 months · point at a dot for who traded, or at the line for the close
2.91 on 9 Oct 2026
5 4 3 Oct 2025 Apr 2026 Oct 2026 13 Oct 2025 $3.06 14 Oct 2025 $2.97 15 Oct 2025 $2.86 16 Oct 2025 $2.97 17 Oct 2025 $2.97 20 Oct 2025 $3.14 21 Oct 2025 $3.14 22 Oct 2025 $3.10 23 Oct 2025 $3.09 24 Oct 2025 $3.80 27 Oct 2025 $3.74 28 Oct 2025 $3.81 29 Oct 2025 $3.74 30 Oct 2025 $3.99 31 Oct 2025 $4.04 3 Nov 2025 $4.09 4 Nov 2025 $3.97 5 Nov 2025 $3.55 6 Nov 2025 $3.51 7 Nov 2025 $3.71 10 Nov 2025 $3.63 11 Nov 2025 $3.53 12 Nov 2025 $3.87 13 Nov 2025 $3.73 14 Nov 2025 $3.66 17 Nov 2025 $3.66 18 Nov 2025 $3.60 19 Nov 2025 $3.65 20 Nov 2025 $3.70 21 Nov 2025 $3.75 24 Nov 2025 $3.80 25 Nov 2025 $3.80 26 Nov 2025 $3.64 28 Nov 2025 $3.64 1 Dec 2025 $3.15 2 Dec 2025 $3.20 3 Dec 2025 $3.25 4 Dec 2025 $3.80 5 Dec 2025 $3.98 8 Dec 2025 $3.84 9 Dec 2025 $3.64 10 Dec 2025 $3.89 11 Dec 2025 $3.88 12 Dec 2025 $3.91 15 Dec 2025 $3.76 16 Dec 2025 $3.71 17 Dec 2025 $3.51 18 Dec 2025 $3.66 19 Dec 2025 $3.60 22 Dec 2025 $4.10 23 Dec 2025 $4.12 24 Dec 2025 $4.42 26 Dec 2025 $4.50 29 Dec 2025 $4.30 30 Dec 2025 $4.16 31 Dec 2025 $4.00 2 Jan 2026 $3.89 5 Jan 2026 $3.84 6 Jan 2026 $3.96 7 Jan 2026 $4.00 8 Jan 2026 $4.04 9 Jan 2026 $4.00 12 Jan 2026 $3.90 13 Jan 2026 $3.87 14 Jan 2026 $3.77 15 Jan 2026 $3.62 16 Jan 2026 $3.70 20 Jan 2026 $3.67 21 Jan 2026 $3.75 22 Jan 2026 $3.76 23 Jan 2026 $3.70 26 Jan 2026 $3.63 27 Jan 2026 $3.70 28 Jan 2026 $3.62 29 Jan 2026 $3.69 30 Jan 2026 $3.70 2 Feb 2026 $3.98 3 Feb 2026 $4.00 4 Feb 2026 $3.85 5 Feb 2026 $3.66 6 Feb 2026 $3.56 9 Feb 2026 $3.55 10 Feb 2026 $3.71 11 Feb 2026 $3.43 12 Feb 2026 $3.37 13 Feb 2026 $3.41 17 Feb 2026 $3.10 18 Feb 2026 $2.99 19 Feb 2026 $3.10 20 Feb 2026 $3.16 23 Feb 2026 $3.16 24 Feb 2026 $3.39 25 Feb 2026 $3.44 26 Feb 2026 $3.25 27 Feb 2026 $3.44 2 Mar 2026 $3.40 3 Mar 2026 $3.33 4 Mar 2026 $3.50 5 Mar 2026 $3.70 6 Mar 2026 $3.76 9 Mar 2026 $4.15 10 Mar 2026 $4.66 11 Mar 2026 $4.33 12 Mar 2026 $3.88 13 Mar 2026 $3.69 16 Mar 2026 $3.56 17 Mar 2026 $4.23 18 Mar 2026 $4.05 19 Mar 2026 $4.17 20 Mar 2026 $4.28 23 Mar 2026 $4.07 24 Mar 2026 $3.82 25 Mar 2026 $4.09 26 Mar 2026 $4.31 27 Mar 2026 $4.04 30 Mar 2026 $3.99 31 Mar 2026 $4.13 1 Apr 2026 $4.35 2 Apr 2026 $4.24 6 Apr 2026 $4.07 7 Apr 2026 $3.73 8 Apr 2026 $4.05 9 Apr 2026 $4.07 10 Apr 2026 $4.10 13 Apr 2026 $4.13 14 Apr 2026 $4.20 15 Apr 2026 $4.33 16 Apr 2026 $4.14 17 Apr 2026 $4.29 20 Apr 2026 $4.19 21 Apr 2026 $4.17 22 Apr 2026 $4.42 23 Apr 2026 $4.28 24 Apr 2026 $4.11 27 Apr 2026 $4.21 28 Apr 2026 $4.12 29 Apr 2026 $4.10 30 Apr 2026 $4.07 1 May 2026 $4.19 4 May 2026 $4.21 5 May 2026 $4.20 6 May 2026 $4.38 7 May 2026 $4.29 8 May 2026 $4.43 11 May 2026 $4.50 12 May 2026 $4.34 13 May 2026 $4.23 14 May 2026 $4.00 15 May 2026 $3.94 18 May 2026 $3.68 19 May 2026 $3.64 20 May 2026 $3.77 21 May 2026 $4.04 22 May 2026 $4.04 26 May 2026 $4.00 27 May 2026 $4.03 28 May 2026 $4.14 29 May 2026 $4.31 1 Jun 2026 $4.11 2 Jun 2026 $4.04 3 Jun 2026 $3.97 4 Jun 2026 $4.01 5 Jun 2026 $3.83 8 Jun 2026 $3.71 9 Jun 2026 $3.85 10 Jun 2026 $3.73 11 Jun 2026 $3.88 12 Jun 2026 $4.00 15 Jun 2026 $4.08 16 Jun 2026 $4.04 17 Jun 2026 $4.05 18 Jun 2026 $4.22 22 Jun 2026 $4.12 23 Jun 2026 $4.00 24 Jun 2026 $4.09 25 Jun 2026 $3.99 26 Jun 2026 $4.02 29 Jun 2026 $4.23 30 Jun 2026 $4.67 1 Jul 2026 $4.09 2 Jul 2026 $4.13 6 Jul 2026 $4.03 7 Jul 2026 $3.94 8 Jul 2026 $3.96 9 Jul 2026 $3.96 10 Jul 2026 $4.41 13 Jul 2026 $4.05 14 Jul 2026 $4.02 15 Jul 2026 $3.90 16 Jul 2026 $3.83 17 Jul 2026 $3.82 20 Jul 2026 $3.68 21 Jul 2026 $3.69 22 Jul 2026 $3.70 23 Jul 2026 $3.99 24 Jul 2026 $3.85 27 Jul 2026 $3.94 28 Jul 2026 $3.93 29 Jul 2026 $4.00 30 Jul 2026 $4.00 31 Jul 2026 $3.98 3 Aug 2026 $4.09 4 Aug 2026 $4.29 5 Aug 2026 $4.15 6 Aug 2026 $4.17 7 Aug 2026 $4.64 10 Aug 2026 $4.25 11 Aug 2026 $4.28 12 Aug 2026 $4.29 13 Aug 2026 $4.29 14 Aug 2026 $4.22 17 Aug 2026 $4.30 18 Aug 2026 $4.21 19 Aug 2026 $4.16 20 Aug 2026 $4.03 21 Aug 2026 $4.04 24 Aug 2026 $4.05 25 Aug 2026 $4.16 26 Aug 2026 $4.17 27 Aug 2026 $4.23 28 Aug 2026 $4.04 31 Aug 2026 $4.04 1 Sep 2026 $4.07 2 Sep 2026 $4.04 3 Sep 2026 $4.04 4 Sep 2026 $4.04 8 Sep 2026 $3.51 9 Sep 2026 $3.60 10 Sep 2026 $3.40 11 Sep 2026 $3.50 14 Sep 2026 $3.62 15 Sep 2026 $3.62 16 Sep 2026 $3.51 17 Sep 2026 $3.50 18 Sep 2026 $3.58 21 Sep 2026 $3.50 22 Sep 2026 $3.43 23 Sep 2026 $3.11 24 Sep 2026 $3.00 25 Sep 2026 $3.01 28 Sep 2026 $3.02 29 Sep 2026 $2.90 30 Sep 2026 $2.90 1 Oct 2026 $2.83 2 Oct 2026 $2.83 5 Oct 2026 $2.90 6 Oct 2026 $2.77 7 Oct 2026 $2.81 8 Oct 2026 $2.79 9 Oct 2026 $2.91 Craig Adam R Executive Chairman Bought $250.00K 23 Oct 2025 · at $2.90 · 29.7% of stake KIRSKE DAVID Chief Financial Officer Sold at will $72.82K 12 May 2026 · at $4.29 · 8.8% of stake KIRSKE DAVID Chief Financial Officer Sold at will $36.43K 30 Jun 2026 · at $4.26 · 4.8% of stake Volpone John President Sold at will $109.23K 12 Aug 2026 · at $4.44 · 8.5% of stake Craig Adam R Executive Chairman Sold at will $210.83K 12 Aug 2026 · at $4.44 · 12.6% of stake KIRSKE DAVID Chief Financial Officer Sold at will $33.66K 1 Oct 2026 · at $2.86 · 7.0% of stake
1 buy5 sales at will0 planned sales

Key numbers

Fiscal year 2025, ended 31 Dec 2025, as filed
Revenue
$35.11M
Net income
$79.20M
Free cash flow
$85.62M
Operating margin
-247.4%
Net margin
-225.6%
Return on equity
-42.5%
Return on capital
-26.3%
Debt to equity
0.40
Revenue growth, 1 yr
1,273.2%
Revenue growth, 5 yr
63.6% a year

Revenue and net income

Fiscal years, as filed with the SEC · point at a year for the detail
3M -62M FY20 Fiscal year 2020 Revenue $3.00M Net income $62.13M Margin -2,071.0% 0K -89M FY21 Fiscal year 2021 Revenue $0.00 Net income $88.70M Margin n/a · growth -100.0% 0K -94M FY22 Fiscal year 2022 Revenue $0.00 Net income $93.87M Margin n/a 0K -101M FY23 Fiscal year 2023 Revenue $0.00 Net income $101.17M Margin n/a 3M -37M FY24 Fiscal year 2024 Revenue $2.56M Net income $37.45M Margin -1,464.6% 35M -79M FY25 Fiscal year 2025 Revenue $35.11M Net income $79.20M Margin -225.6% · growth +1,273.2%
RevenueNet incomeLoss

Latest insider transactions

From Form 4, most recent first
All of them →
DateInsiderTypeValueOf own stake
1 Oct 2026 KIRSKE DAVID
Chief Financial Officer
Sold at will $33.66K 7.0%
12 Aug 2026 Craig Adam R
Executive Chairman
Sold at will $210.83K 12.6%
12 Aug 2026 Volpone John
President
Sold at will $109.23K 8.5%
30 Jun 2026 KIRSKE DAVID
Chief Financial Officer
Sold at will $36.43K 4.8%
12 May 2026 KIRSKE DAVID
Chief Financial Officer
Sold at will $72.82K 8.8%
23 Oct 2025 Craig Adam R
Executive Chairman
Bought $250.00K 29.7%