StockCIK 1501697

X4 Pharmaceuticals, Inc (XFOR): Insider Trades and Fund Holdings

In the past 12 months, X4 Pharmaceuticals, Inc insiders reported 1 open-market purchase worth $12K and 3 sales worth $354K; 0 of the sales were reported as made under a 10b5-1 trading plan.

1Insider buys, 12 months

$12KBought by insiders, 12 months

$354KSold by insiders, 12 months

1Tracked funds holding

Recent insider trades

Open-market purchases (code P) and sales (code S) from Form 4. Grants, option exercises and gifts are not shown. Latest filing: Oct 19, 2026.

Recent XFOR insider trades
Filed	Traded	Insider	Role	Type	Shares	Price ($)	Value	Holding	Filing
Oct 19	Oct 16	Adam R. CraigExecutive Chair	Executive Chair	▲ BUY	4,600	2.58	$12K	+1.4%	Form 4 ↗
Oct 5	Oct 1	David KirskeCFO	CFO	▼ SELL	11,767	2.86	$34K	−7.0%	Form 4 ↗
Aug 13	Aug 12	Adam R. CraigExecutive Chair	Executive Chair	▼ SELL	47,436	4.44	$211K	−13%	Form 4 ↗
Aug 13	Aug 12	John VolponePresident	President	▼ SELL	24,576	4.44	$109K	−8.5%	Form 4 ↗

Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings

Insiders who traded in the past year

Insider	Role	Buys	Bought	Sells	Sold	Latest
Adam R. Craig	Executive Chair	1	$12K	1	$211K	Oct 19, 2026
David Kirske	CFO	0	$0	1	$34K	Oct 5, 2026
John Volpone	President	0	$0	1	$109K	Aug 13, 2026

Tracked funds that report XFOR

From each fund's latest 13F. Holdings are as of quarter end and are filed up to 45 days later.

Fund	Quarter	Shares	Value	% of portfolio	Change
Renaissance Technologies	Q2 2026	18,100	$85K	0.00%	▲ New

Source: SEC Form 13F-HR filings, retrieved Oct 28, 2026. How we read filings

Reading these numbers

Insiders sell for many reasons: taxes, diversification, a house. Purchases with their own money are rarer and are usually read as more informative. A Form 4 is due within two business days of the trade. How to read a Form 4 →