This is a routine insider sale tied to RSU vesting. The dollar amount is immaterial relative to market cap. No immediate trading signal — monitor for any cluster of insider sales or larger disposals by senior management.
Price Chart
Executive Summary
David Kirske, an officer of X4 Pharmaceuticals, filed a Form 144 notice of intent to sell 16,961 shares of common stock valued at approximately $72,820. The shares were acquired through restricted stock unit vesting on May 11, 2026. This is a routine insider sale following equity compensation vesting and represents a small fraction of the company's $424M market cap.
Key Facts
- Filer: David Kirske, an officer of X4 Pharmaceuticals
- Proposed sale: 16,961 shares of common stock
- Approximate value: $72,820.41
- Shares acquired via restricted stock unit vesting on May 11, 2026
- Sale intended to be executed through Morgan Stanley Smith Barney LLC
- Filing date: May 12, 2026
Financial Impact
Approximately $72,820 — less than 0.02% of XFOR's $424M market cap
Risk Factors
- Insider selling could increase if additional officers follow suit
- No material risk from this isolated filing
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 144 Filing (Primary) | 0001276750-26-000004 |
| Document: 0001276750-26-000004-index.html | 0001276750-26-000004 |
| Document: 0001276750-26-000004.txt | 0001276750-26-000004 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 8, 2026 18d ago | 8-K | $2.91 | awaiting T+20 | — | $3.10 (+6.53%) |
Oct 7, 2026 20d ago | SC 13G/A | $2.81 | awaiting T+20 | — | $3.10 (+10.32%) |
Oct 1, 2026 25d ago | 144 | $2.83 | awaiting T+20 | — | $3.10 (+9.54%) |
Sep 21, 2026 5w ago | SC 13G | $3.43 $3.02 | ▼ −11.95% | ▼ −11.39% | $3.10 (−9.62%) |
Sep 8, 2026 7w ago | 8-K | $3.51 $2.77 | ▼ −20.97% | ▼ −22.68% | $3.10 (−11.55%) |
Aug 13, 2026 10w ago | Insider Cluster | $4.22 $3.62 | ▼ −14.22% | ▼ −12.23% | $3.10 (−26.54%) |
Aug 13, 2026 10w ago | 144 | $4.29 $3.50 | ▼ −18.41% | ▼ −16.67% | $3.10 (−27.74%) |
Jun 11, 2026 19w ago | Institutional Cluster | $3.88 $3.96 | ▲ +2.06% | ▲ +0.17% | $3.10 (−20.10%) |
Jun 11, 2026 19w ago | Institutional Cluster | $3.88 $3.96 | ▲ +2.06% | ▲ +0.17% | $3.10 (−20.10%) |
May 18, 2026 23w ago | EFFECT | $3.68 $4.04 | ▲ +9.78% | ▲ +8.20% | $3.10 (−15.76%) |
US Market Status
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