No actionable trading signal. The filing confirms a mechanical tax-withholding-sale, a routine post-vesting event. The insider continues to hold a significant number of restricted shares. Monitor for any future open-market filings (e.g., Rule 10b5-1 plan amendments) that might signal a change in insider sentiment.
Price Chart
Executive Summary
Artiva Biotherapeutics (ARTV) director Christopher Horan filed a Form 144 to sell 7,500 shares (~$69K estimated value) as a sell-to-cover transaction for tax withholding on RSU vesting. This is a routine, non-discretionary sale tied to equity compensation—not a signal of insider bearishness.
Key Facts
- Form 144 filed by director Christopher Horan for 7,500 common shares.
- Sale is explicitly described as 'sell-to-cover' for taxes on RSU vesting.
- Shares were acquired on 5/15/2026 via RSU vesting under issuer's registered plan.
- Estimated aggregate market value: ~$69,150 (based on recent market price).
- Proposed sale date: 5/18/2026 — same day as filing.
- Selling broker: Morgan Stanley Smith Barney LLC.
Financial Impact
Proceeds ~$69K — trivial relative to company's $242M market cap and insider's likely holdings.
Risk Factors
- None from this filing itself — the sale is mandated by tax withholding, not discretion.
- High insider ownership concentration remains a positive governance factor.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 144 Filing (Primary) | 0001736819-26-000003 |
| Document: 0001736819-26-000003-index.html | 0001736819-26-000003 |
| Document: 0001736819-26-000003.txt | 0001736819-26-000003 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 11, 2026 20d ago | 8-K | $10.14 $8.91 | ▼ −12.13% | ▼ −11.67% | $6.86 (−32.35%) |
Sep 9, 2026 23d ago | Insider Cluster | $10.79 $10.42 | ▼ −3.43% | ▼ −2.83% | $6.86 (−36.42%) |
Sep 9, 2026 23d ago | Insider Cluster | $10.79 $10.42 | ▼ −3.43% | ▼ −2.83% | $6.86 (−36.42%) |
Sep 9, 2026 23d ago | Insider Cluster | $10.79 $10.42 | ▼ −3.43% | ▼ −2.83% | $6.86 (−36.42%) |
Sep 9, 2026 23d ago | Insider Cluster | $10.79 $10.42 | ▼ −3.43% | ▼ −2.83% | $6.86 (−36.42%) |
Sep 9, 2026 23d ago | Insider Cluster | $10.79 $10.42 | ▲ +3.43% | ▲ +2.83% | $6.86 (+36.42%) |
Sep 4, 2026 28d ago | Insider Cluster | $11.19 $10.88 | ▼ −2.77% | ▼ −2.22% | $6.86 (−38.70%) |
Aug 15, 2026 6w ago | Institutional Cluster | $11.74 $11.68 | ▼ −0.51% | ▲ +0.16% | $6.86 (−41.57%) |
Jul 31, 2026 8w ago | Insider Buy | $10.76 $11.07 | ▲ +2.88% | ▲ +1.08% | $6.86 (−36.25%) |
Jul 28, 2026 9w ago | Insider Buy | $10.53 $10.02 | ▼ −4.84% | ▼ −3.30% | $6.86 (−34.85%) |
US Market Status
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