Korro Bio, Inc.
KRROCIK 0001703647 · Every Form 4 filed by insiders at this issuer. See financials →
Annual report (10-K)
Latest 10-K filed Mar 12, 2026. Sentiment + YoY language diff vs prior year. Read sections →
Signal:NeutralFull-doc fallback
Full filing:tone -0.0132Δ-0.000587% similar+756/-695 ¶
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 Korro Bio, Inc.
| Name | Roles | Filings |
|---|---|---|
| Formela Jean Francois | Director | 5 |
| Agarwal Vineet | Officer | 4 |
| Arnold Wendy S | Officer | 4 |
| Cerio Jeffrey | Officer | 4 |
| Chappell Todd | Officer | 4 |
Top performers
Insiders ranked by realized 90-day signed return on their open-market trades at Korro Bio, 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 | Arnold Wendy S | 5 | 100% | +68.1% | +70.0% | +70.6% | +62.9% |
| 2 | Lebel Carl | 5 | 100% | +68.1% | +70.0% | +70.6% | +62.9% |
| 3 | McCubbin Quentin | 5 | 100% | +68.1% | +70.0% | +70.6% | +62.9% |
| 4 | Pfreundschuh Peter P. | 5 | 100% | +68.1% | +70.0% | +70.6% | +62.9% |
| 5 | Agarwal Vineet | 12 | 100% | +53.6% | +53.3% | +56.1% | +53.3% |
| 6 | Loose Christopher R. | 25 | 100% | +44.8% | +51.6% | +70.6% | +12.6% |
| 7 | Mitrano Richard J. | 36 | 78% | +25.6% | +39.4% | +62.3% | -53.2% |
| 8 | Lucchino David L. | 47 | 60% | +9.9% | +22.5% | +62.3% | -53.2% |
All filings
149 Form 4 / 4-A filings, newest first
| Filed | Top transaction | Shares | Price | Value | ||
|---|---|---|---|---|---|---|