KROS · Insider trading · 13F holders · Congress trades
Keros Therapeutics, Inc. (KROS)
Who is buying and selling KROS: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 2
- Insider buys, 90 days
- $10K
- Insider sales, 90 days
- $101K
- Congress trades, 12 months
- 0
KROS at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 5 KROS insiders filed 1 open-market purchase worth $10K and 4 sales worth $101K on SEC Form 4; 1 of the sales were pre-planned under Rule 10b5-1.
- 2 13F filers hold KROS among their 50 largest positions, worth $21.8M combined. The biggest bets by portfolio weight are Nantahala Capital Management, LLC (0.9%) and Madison Avenue Partners, LP (0.3%).
- No member of Congress has disclosed a trade in KROS.
- KROS last closed at $11.36 on Oct 29, 2026.
KROS insider trading
Between Aug 1, 2026 and Oct 29, 2026, 5 KROS insiders filed 1 open-market purchase worth $10K and 4 sales worth $101K on SEC Form 4; 1 of the sales were pre-planned under Rule 10b5-1.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Aug 20, 2026 | Cho Esther | Chief Legal Officer | Sale | 4,485 | $10.29 | $46K | SEC |
| Aug 20, 2026 | Lerner Lorena Raquel | Chief Scientific Officer | Sale | 3,568 | $10.29 | $37K | SEC |
| Aug 20, 2026 | Tanini Annita | Corp. Controller & VP, Finance | Sale | 1,224 | $10.29 | $13K | SEC |
| Aug 20, 2026 | Newton Charles W. | Director | Sale10b5-1 | 551 | $10.30 | $6K | SEC |
| Aug 19, 2026 | Bienaime Jean Jacques | Director | Buy10b5-1 | 1,000 | $10.27 | $10K | SEC |
Who owns KROS? Hedge funds and superinvestors
2 13F filers hold KROS among their 50 largest positions, worth $21.8M combined. The biggest bets by portfolio weight are Nantahala Capital Management, LLC (0.9%) and Madison Avenue Partners, LP (0.3%).
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Nantahala Capital Management, LLCHedge fund | 0.9% | $15.1M | 1,410,419 | +3.7% shares | Q2 2026 |
| Madison Avenue Partners, LPHedge fund | 0.3% | $6.7M | 626,583 | +0.0% shares | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 2). Screen KROS in the grand portfolio →
KROS stock trades by members of Congress
No member of Congress has disclosed a trade in KROS.
KROS questions and answers
Are insiders buying KROS stock?
Between Aug 1, 2026 and Oct 29, 2026, 5 KROS insiders filed 1 open-market purchase worth $10K and 4 sales worth $101K on SEC Form 4; 1 of the sales were pre-planned under Rule 10b5-1.
Which hedge funds own KROS?
2 13F filers hold KROS among their 50 largest positions, worth $21.8M combined. The biggest bets by portfolio weight are Nantahala Capital Management, LLC (0.9%) and Madison Avenue Partners, LP (0.3%).
Has Congress traded KROS?
No member of Congress has disclosed a trade in KROS.
Who is the largest holder of KROS?
Among 13F filers, Nantahala Capital Management, LLC reports the largest KROS position, $15.1M (1,410,419 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Nantahala Capital Management, LLC's: 0.9% of its portfolio.
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