Form4.ai tracks every SEC insider trade in real time. See every KROS insider filing with a free account — no card.
See every KROS insider filing — free account, no card.
Free accountKeros Therapeutics, Inc. (KROS) has 5 SEC Form 4 insider filings on record in the last 90 days. That includes 1 insider purchase totalling $10K, and 4 sales totalling $101K. Most recent filing: Aug. 20, 2026.
Open-market value, last 90 days
Form 4 filings by type, last 90 days
| Date | Insider | Trade | Value | Price since buy |
|---|---|---|---|---|
| Aug 20, 2026 SEC filing | Lerner Lorena Raquel Chief Scientific Officer | Sold | $36,715 | — |
| Aug 20, 2026 SEC filing | Tanini Annita Corp. Controller & VP, Finance | Sold | $12,595 | — |
| Aug 20, 2026 SEC filing | Cho Esther Chief Legal Officer | Sold | $46,151 | — |
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Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.