Arcellx, Inc.
ACLXCIK 0001786205 · Every Form 4 filed by insiders at this issuer. See financials →
Annual report (10-K)
Latest 10-K/A filed Apr 24, 2026. Sentiment + YoY language diff vs prior year. Read sections →
Signal:NeutralFull-doc fallback
Full filing:tone -0.0001
Sentiment via Loughran-McDonald lexicon · YoY diff via Jaccard similarity + paragraph set difference.
Recent 8-K announcements
Per-item disclosure feed. Item 2.02 is the earnings release.
Top insiders
Most active reporters at Arcellx, Inc.
| Name | Roles | Filings |
|---|---|---|
| Baskett Forest | 10% Owner | 2 |
| Florence Anthony A. Jr. | 10% Owner | 2 |
| George Simeon | 10% Owner | 2 |
| Makhzoumi Mohamad | 10% Owner | 2 |
| Nea 15 Gp, LLC | 10% Owner | 2 |
Top performers
Insiders ranked by realized 90-day signed return on their open-market trades at Arcellx, Inc.. Minimum 3 scored trades. Returns are signed - a sale followed by a rally counts against the insider.
| # | Insider | Trades | Win rate | Avg | Median | Best | Worst |
|---|---|---|---|---|---|---|---|
| 1 | Gilson Michelle | 33 | 76% | +13.6% | +24.5% | +33.8% | -57.4% |
| 2 | Elghandour Rami | 18 | 72% | +11.1% | +20.0% | +26.5% | -54.2% |
| 3 | Ware Olivia C | 5 | 60% | +6.7% | +21.0% | +21.0% | -14.7% |
| 4 | Patel Kavita | 34 | 65% | +3.1% | +6.7% | +37.1% | -56.3% |
| 5 | Heery Christopher | 73 | 51% | -7.9% | +1.7% | +26.5% | -77.1% |
| 6 | Carroll Jill | 8 | 63% | -4.2% | +19.4% | +24.2% | -52.0% |
| 7 | George Simeon | 6 | 67% | -2.4% | +22.5% | +22.5% | -52.0% |
| 8 | Sr One Capital Management, LLC | 6 | 67% | -2.4% | +22.5% | +22.5% | -52.0% |
| 9 | Sr One Capital Partners I, LP | 6 | 67% | -2.4% | +22.5% | +22.5% | -52.0% |
| 10 | Sr One Capital Fund I Aggregator LP | 6 | 67% | -2.4% | +22.5% | +22.5% | -52.0% |
All filings
157 Form 4 / 4-A filings, newest first
| Filed | Top transaction | Shares | Price | Value | ||
|---|---|---|---|---|---|---|