XFOR insider buying and SEC filings, explained

X4 Pharmaceuticals, Inc · CIK 1501697

Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov

Insider activity in the last 12 months

Bought

$12K

Insiders who bought

Sold (not marked 10b5-1)

$463K

Planned sales (10b5-1)

Traded	Type	What was filed	Source
Oct 16, 2026	Purchase (code P)	Adam R Craig (Chair and Director) bought 4,600 shares at $2.58 ($12K), reported as a purchase (code P). Holdings up 1% to 333,251 shares. Not marked as a 10b5-1 plan trade.	SEC filing Filed Oct 19, 2026, 4:06 PM ET
Oct 1, 2026	Sale	David Kirske (CFO) sold 11,767 shares at about $2.86 ($34K). Holdings down 7% to 155,983 shares. Not marked as a 10b5-1 plan trade.	SEC filing Filed Oct 5, 2026, 4:03 PM ET
Aug 12, 2026	Sale	John Volpone (President / COO) sold 24,576 shares at about $4.44 ($109K). Holdings down 8% to 265,305 shares. Not marked as a 10b5-1 plan trade.	SEC filing Filed Aug 13, 2026
Aug 12, 2026	Sale	Adam R Craig (Chair and Director) sold 47,436 shares at about $4.44 ($211K). Holdings down 13% to 328,651 shares. Not marked as a 10b5-1 plan trade.	SEC filing Filed Aug 13, 2026
Jun 30, 2026	Sale	David Kirske (CFO) sold 8,543 shares at about $4.26 ($36K). Holdings down 5% to 167,750 shares. Not marked as a 10b5-1 plan trade.	SEC filing Filed Jul 1, 2026
May 12, 2026	Sale	David Kirske (CFO) sold 16,961 shares at about $4.29 ($73K). Holdings down 9% to 176,293 shares. Not marked as a 10b5-1 plan trade.	SEC filing Filed May 13, 2026

5 routine transactions (such as grants, option exercises or tax withholding) are not listed.

No cluster buys in the last 12 months.

No red flags in the last 12 months.

No key events in the last 12 months.

No 8-K filings in the last 12 months.

Red flags are objective triggers only: the item or form filed, never an opinion.

Follow XFOR in the Insider Ledger app

A plain-English brief of insider purchases, 8-Ks and red flags at the companies you pick. No account needed.