ADAR1 Partners, LP insider trades: Keros Therapeutics (KROS) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where ADAR1 Partners, LP reports to the SEC
Open-market buys and sales
7 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Oct 15, 2025 | KROS | ↓ Sell | 4,391,237 | $17.75 | $77.9M | By ADAR1 Partners, LP | Oct 15, 2025 (0d) |
| Oct 15, 2025 | KROS | ↓ Sell | 743,358 | $17.75 | $13.2M | By Spearhead Insurance Solutions IDF, LL | Oct 15, 2025 (0d) |
| Oct 15, 2025 | KROS | ↓ Sell | 254,669 | $17.75 | $4.5M | By ADAR1 SPVI, LP | Oct 15, 2025 (0d) |
| Apr 9, 2025 | KROS | ↑ Buy | 917,893 | $10.14 | $9.3M | By ADAR1 Partners, LP | Apr 11, 2025 (2d) |
| Apr 9, 2025 | KROS | ↑ Buy | 16,365 | $9.40 | $154K | By Spearhead Insurance Solutions IDF, LL | Apr 11, 2025 (2d) |
| Aug 12, 2024 | PIRS | ↑ Buy | 5,243 | $15.32 | $80K | By: ADAR1 Partners | Aug 12, 2024 (0d) |
| Aug 12, 2024 | PIRS | ↑ Buy | 757 | $15.88 | $12K | By: Spearhead Insurance Solutions IDF, L | Aug 12, 2024 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other KROS insiders
Open-market trades in the last 12 months
About ADAR1 Partners, LP's insider trades
ADAR1 Partners, LP is a 10% owner of Keros Therapeutics (KROS). Since Aug 12, 2024, it has reported 4 open-market purchases worth $9.6M and 3 sales worth $95.7M on SEC Form 4. There have been no open-market trades in the last 12 months.
Its filings also include other transactions (2 filings), option exercises (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every KROS insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.