X4 Pharmaceuticals, Inc

XFORNASDAQ

$2.77-0.13 (-4.48% today)

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

X4 Pharmaceuticals, Inc price and activity chart data

Showing the 1Y range: Oct 6, 2025 to Oct 6, 2026. Price (-17.8%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
Morgan Stanley	9.84%	$44.2M	0.00%	Not reported
FMR LLC	8.66%	$38.9M	0.00%	Not reported
Bain Capital Life Sciences Investors, LLC	8.29%	$37.2M	2.21%	Not reported
Perceptive Advisors LLC	8.25%	$37M	0.56%	Add 17.75%
Kalehua Capital Management LLC	7.75%	$34.8M	11.09%	Not reported
Saturn V Capital Management LP	7.26%	$32.6M	4.67%	Add 8.00%
Empery Asset Management, LP	7.21%	$32.4M	37.43%	Reduce 22.51%
Deep Track Capital, LP	6.12%	$27.5M	0.40%	Reduce 7.27%
BlackRock, Inc.	5.78%	$25.9M	0.00%	Not reported
Nantahala Capital Management, LLC	5.10%	$22.9M	0.38%	Add 100.00%
Vanguard Capital Management LLC	3.87%	$17.4M	0.00%	Not reported
NEA Management Company, LLC	3.36%	$15.1M	0.95%	Not reported
Rosalind Advisors, Inc.	3.34%	$15M	5.58%	Not reported
Braidwell LP	3.04%	$13.6M	0.50%	Reduce 10.70%
Blackstone Inc.	2.79%	$12.5M	0.04%	Not reported
Trails Edge Capital Partners, LP	2.68%	$12M	1.91%	Not reported
BVF Inc	2.32%	$10.4M	0.27%	Not reported
Geode Capital Management, LLC	2.18%	$9.8M	0.00%	Not reported
Venrock Adviser, LLC	2.01%	$9.03M	0.27%	Add 485.21%
Samsara Biocapital, LLC	1.45%	$6.52M	0.54%	Reduce 23.85%
State Street Corp	1.35%	$6.05M	0.00%	Not reported
Woodline Partners LP	1.04%	$4.68M	0.01%	Not reported
Goldman Sachs Group Inc	0.95%	$4.28M	0.00%	Not reported
Northern Trust Corp	0.68%	$3.05M	0.00%	Not reported
Vanguard Fiduciary Trust Co	0.60%	$2.67M	0.00%	Not reported
Vanguard Portfolio Management LLC	0.56%	$2.53M	0.00%	Not reported
Verdad Advisers, LP	0.37%	$1.64M	1.57%	Not reported
Charles Schwab Investment Management Inc	0.27%	$1.23M	0.00%	Not reported
Stonepine Capital Management, LLC	0.23%	$1.05M	0.59%	Reduce 32.90%
Bank of New York Mellon Corp	0.20%	$917K	0.00%	Not reported
Affinity Asset Advisors, LLC	0.15%	$677K	0.03%	Not reported
Nuveen, LLC	0.11%	$502K	0.00%	Not reported
Invesco Ltd.	0.10%	$452K	0.00%	Not reported
Alps Advisors Inc	0.10%	$447K	0.00%	Not reported
Rhumbline Advisers	0.10%	$444K	0.00%	Not reported
Susquehanna Portfolio Strategies, LLC	0.09%	$408K	0.01%	Reduce 14.93%
Deutsche Bank Ag\	0.08%	$368K	0.00%	Not reported
Gsa Capital Partners LLP	0.08%	$356K	0.02%	Not reported
American Century Companies Inc	0.08%	$349K	0.00%	Not reported
Citigroup Inc	0.07%	$327K	0.00%	Not reported
Wells Fargo & Company	0.07%	$316K	0.00%	Not reported
Palumbo Wealth Management LLC	0.07%	$313K	0.07%	Reduce 48.77%
Squarepoint Ops LLC	0.07%	$313K	0.00%	Not reported
UBS Group AG	0.06%	$271K	0.00%	Not reported
Wellington Management Group LLP	0.05%	$242K	0.00%	New Not reported
MetLife Investment Management, LLC	0.05%	$224K	0.00%	Not reported
Bank of America Corp	0.05%	$219K	0.00%	Not reported
Point72 Asset Management, L.P.	0.04%	$192K	0.00%	Not reported
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	0.04%	$173K	0.00%	Not reported
Jump Financial, LLC	0.04%	$160K	0.00%	Not reported

50 of 85 holders

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