This is a routine tax-withholding sale with no discretionary signal. Monitor for any subsequent discretionary Form 4 filings by officers, which would carry more weight.
Price Chart
Executive Summary
David Kirske, an officer of X4 Pharmaceuticals, filed a Form 144 notice of intent to sell 11,767 common shares (approx. $33,658) to cover tax withholding obligations from vesting restricted stock units. The sale is mandatory under the company's equity incentive plans and is not a discretionary trade by the insider.
Key Facts
- Insider David Kirske (Officer) filed Form 144 to sell 11,767 shares of X4 Pharmaceuticals common stock.
- Estimated aggregate sale value is approximately $33,658.47 based on filing date price.
- Sale is mandated by the issuer's equity incentive plan to cover tax withholding on vested restricted stock units.
- Transaction is a 'sell to cover' — not a discretionary trade by the insider.
- Filing date: October 1, 2026.
Financial Impact
Approximately $33,658 in planned sale, representing a small fraction of the company's market cap.
Risk Factors
- No material risk identified from this filing alone.
Investment Themes
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 144 Filing (Primary) | 0001276750-26-000008 |
| Document: 0001276750-26-000008-index.html | 0001276750-26-000008 |
| Document: 0001276750-26-000008.txt | 0001276750-26-000008 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 8, 2026 18d ago | 8-K | $2.91 | awaiting T+20 | — | $3.25 (+11.68%) |
Oct 7, 2026 19d ago | SC 13G/A | $2.81 | awaiting T+20 | — | $3.25 (+15.66%) |
Oct 1, 2026 25d ago | 144 | $2.83 | awaiting T+20 | — | $3.25 (+14.84%) |
Sep 21, 2026 5w ago | SC 13G | $3.43 $3.02 | ▼ −11.95% | ▼ −11.39% | $3.25 (−5.25%) |
Sep 8, 2026 6w ago | 8-K | $3.51 $2.77 | ▼ −20.97% | ▼ −22.68% | $3.25 (−7.28%) |
Aug 13, 2026 10w ago | Insider Cluster | $4.22 $3.62 | ▼ −14.22% | ▼ −12.23% | $3.25 (−22.99%) |
Aug 13, 2026 10w ago | 144 | $4.29 $3.50 | ▼ −18.41% | ▼ −16.67% | $3.25 (−24.24%) |
Jun 11, 2026 19w ago | Institutional Cluster | $3.88 $3.96 | ▲ +2.06% | ▲ +0.17% | $3.25 (−16.24%) |
Jun 11, 2026 19w ago | Institutional Cluster | $3.88 $3.96 | ▲ +2.06% | ▲ +0.17% | $3.25 (−16.24%) |
May 18, 2026 23w ago | EFFECT | $3.68 $4.04 | ▲ +9.78% | ▲ +8.20% | $3.25 (−11.68%) |
US Market Status
Subscribe to SecBot
Get Real-Time SEC Filing Intelligence
Comprehensive SEC filing analysis delivered the moment filings hit EDGAR. Sentiment scoring, impact analysis, and actionable insights for every material event.
Create a free account Live analysis, Telegram alerts, watchlists and the MCP server for subscribers