The CEO sale is small and likely routine post-earnings diversification, not a signal. The 10% owner buy is modest but directionally positive. Monitor for any Form 4 filings from the CEO in the next 30 days — a second sale would shift the signal. KRRO-121 regulatory filing in H2 2026 is the next major catalyst.
Price Chart
Executive Summary
Korro Bio's CEO sold $63K worth of shares while a 10% owner bought $60K, creating a mixed insider cluster. The CEO sale occurred just days after Q2 earnings (net loss $18.9M, cash runway into H2 2028) and a warrant exchange that reduced share count. The buy side is small relative to the $197M market cap (0.03%), and the CEO sale is likely liquidity-driven post-earnings, not a bearish signal given the company's advancing pipeline (KRRO-121 EMA Orphan Drug designation, KRRO-111 AATD candidate nomination).
Key Financial Metrics
Key Facts
- CEO Ram Aiyar sold 5.8K shares for $63K on 2026-08-04
- 10% owner Lynx1 Capital bought 5.2K shares for $60K on 2026-08-06
- Total cluster value $122K is 0.06% of $197M market cap — trivial
- Q2 2026 net loss improved to $18.9M ($1.07/share) from $25.8M ($2.74/share) YoY
- Cash $137.9M provides runway into H2 2028
- Warrant exchange with Venrock reduced share count to 13.7M
- KRRO-121 on track for regulatory filing H2 2026; KRRO-111 nominated as AATD candidate
Financial Impact
Cluster value of $122K is 0.06% of market cap — immaterial
Risk Factors
- Pre-revenue biotech with no approved products
- Cash runway only into H2 2028 — future dilution likely
- CEO sale, while small, could indicate personal liquidity needs unrelated to company outlook
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-KRRO-1786629684343 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 27, 2026 today | SC 13G/A | — | awaiting T+1 | — | — |
Oct 26, 2026 today | Insider Buy | $12.46 | awaiting T+1 | — | $13.30 (+6.74%) |
Oct 22, 2026 5d ago | 8-K | $12.05 $11.98 | ▼ −0.58% | ▼ −0.06% | $13.30 (+10.37%) |
Oct 16, 2026 11d ago | Press Release | $8.91 $9.44 | ▲ +5.95% | ▲ +5.61% | $13.30 (+49.27%) |
Oct 5, 2026 22d ago | 8-K | $9.76 $10.49 | ▲ +7.48% | ▲ +7.72% | $13.30 (+36.27%) |
Oct 5, 2026 22d ago | Press Release | $9.76 $10.49 | ▲ +7.48% | ▲ +7.72% | $13.30 (+36.27%) |
Sep 15, 2026 6w ago | Insider Cluster | $13.83 $11.80 | ▼ −14.68% | ▼ −15.81% | $13.30 (−3.83%) |
Aug 13, 2026 10w ago | Insider Cluster | $13.29 $13.28 | ▼ −0.08% | ▲ +0.12% | $13.30 (+0.08%) |
Aug 6, 2026 11w ago | 8-K | $12.12 $13.25 | ▲ +9.32% | ▲ +8.71% | $13.30 (+9.74%) |
Jul 9, 2026 15w ago | Institutional Cluster | $14.30 $14.56 | ▲ +1.82% | ▲ +1.39% | $13.30 (−6.99%) |
US Market Status
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