These are routine insider sales to cover tax obligations from restricted stock vesting. No material signal for the stock. Monitor for any larger or uncharacteristic insider selling in the coming weeks, but this filing alone does not warrant action.
Price Chart
Executive Summary
Two Definium Therapeutics officers (Matthew T. Wiley and Brandi Roberts) filed Form 144 notices on June 25, 2026, indicating intent to sell shares acquired through restricted stock vesting. The combined proposed sale of 5,880 shares (~$247,724) is very small relative to the company's $4.7B market cap and appears to be routine tax-motivated selling, not a material signal of insider concern.
Key Facts
- Matthew T. Wiley (Officer) filed Form 144 to sell 2,867 shares valued at ~$120,787.
- Brandi Roberts (Officer) filed Form 144 to sell 3,013 shares valued at ~$126,938.
- Both sales are from restricted stock vesting under a registered plan for services rendered.
- Total proposed sale: 5,880 shares, ~$247,724, representing ~0.005% of market cap.
- Both filings were made on the same day (June 25, 2026), suggesting coordinated tax-related selling.
Financial Impact
Combined proposed sale of ~$247,724, immaterial relative to $4.7B market cap.
Risk Factors
- Insider sales could increase if more officers file similar notices.
- Small sales may precede larger sales if insiders establish a selling pattern.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 6 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 144 Filing (DFTX) — Batch item 1 | 0001950047-26-006492 |
| Document: 0001950047-26-006492-index.html | 0001950047-26-006491 |
| Document: 0001950047-26-006492.txt | 0001950047-26-006492 |
| 144 Filing (DFTX) — Batch item 4 | 0001950047-26-006491 |
| Document: 0001950047-26-006491-index.html | 0001950047-26-006492 |
| Document: 0001950047-26-006491.txt | 0001950047-26-006492 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 14, 2026 18d ago | 8-K | $40.25 $39.28 | ▼ −2.41% | ▼ −2.52% | $37.40 (−7.08%) |
Aug 12, 2026 7w ago | 8-K | $42.79 $45.82 | ▲ +7.08% | ▲ +7.53% | $37.40 (−12.60%) |
Aug 9, 2026 7w ago | Institutional Cluster | $45.15 $45.26 | ▲ +0.24% | ▲ +0.29% | $37.40 (−17.17%) |
Jun 25, 2026 14w ago | 144 | $44.95 $44.19 | ▼ −1.69% | ▼ −3.86% | $37.40 (−16.80%) |
Jun 25, 2026 14w ago | 144 | $44.95 $44.19 | ▼ −1.69% | ▼ −3.86% | $37.40 (−16.80%) |
Jun 24, 2026 14w ago | 8-K | $44.79 $43.40 | ▲ +3.10% | ▲ +4.66% | $37.40 (+16.50%) |
Jun 24, 2026 14w ago | 424B5 | $44.79 $43.40 | ▲ +3.10% | ▲ +4.66% | $37.40 (+16.50%) |
Jun 22, 2026 14w ago | 424B5 | $36.18 $46.55 | ▼ −28.66% | ▼ −27.65% | $37.40 (−3.37%) |
Apr 27, 2026 22w ago | DEFA14A | $21.27 $21.75 | ▲ +2.26% | ▲ +0.56% | $37.40 (+75.83%) |
US Market Status
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