Jean Jacques Bienaime 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 Jean reports to the SEC
and 3 more companies
Open-market buys and sales
333 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Aug 17, 2026 | KROS | ↑ Buy | 1,000 | $10.27 | $10K | Direct | Aug 19, 2026 (2d) |
| Aug 14, 2026 | ASND | ↑ Buy | 2,000 | $246.33 | $493K | Direct | Aug 18, 2026 (4d) |
| Jul 15, 2026 | KROS | ↑ Buy | 1,000 | $10.61 | $11K | Direct | Jul 17, 2026 (2d) |
| Jun 15, 2026 | KROS | ↑ Buy | 1,000 | $10.19 | $10K | Direct | Jun 17, 2026 (2d) |
| Jun 5, 2026 | IMNM | ↑ Buy | 10,500 | $19.45 | $204K | Direct | Jun 9, 2026 (4d) |
| Jun 5, 2026 | IMNM | ↓ Sell | 10,500 | $19.41 | $204K | Direct | Jun 9, 2026 (4d) |
| May 26, 2026 | ASND | ↑ Buy | 400 | $237.80 | $95K | Direct | May 27, 2026 (1d) |
| May 15, 2026 | IMNM | ↑ Buy | 5,000 | $20.70 | $104K | Direct | May 19, 2026 (4d) |
| May 15, 2026 | KROS | ↑ Buy | 1,000 | $10.58 | $11K | Direct | May 19, 2026 (4d) |
| Apr 15, 2026 | KROS | ↑ Buy | 1,000 | $11.70 | $12K | Direct | Apr 17, 2026 (2d) |
| Mar 11, 2026 | IMNM | ↑ Buy | 2,000 | $21.84 | $44K | Direct | Mar 12, 2026 (1d) |
| Jun 3, 2025 | IMNM | ↑ Buy | 5,000 | $9.38 | $47K | Direct | Jun 3, 2025 (0d) |
| Mar 25, 2025 | IMNM | ↑ Buy | 7,800 | $7.78 | $61K | Direct | Mar 26, 2025 (1d) |
| Mar 24, 2025 | IMNM | ↑ Buy | 7,000 | $8.21 | $57K | Direct | Mar 25, 2025 (1d) |
| Aug 16, 2024 | IMNM | ↑ Buy | 7,000 | $13.94 | $98K | Direct | Aug 19, 2024 (3d) |
| May 21, 2024 | IMNM | ↑ Buy | 2,000 | $13.57 | $27K | Direct | May 22, 2024 (1d) |
| May 10, 2024 | BMRN | ↓ Sell | 40,000 | $81.38 | $3.3M | Direct | May 13, 2024 (3d) |
| Apr 12, 2024 | BMRN | ↓ Sell | 40,000 | $91.13 | $3.6M | Direct | Apr 15, 2024 (3d) |
| Mar 6, 2024 | BMRN | ↓ Sell | 2,000 | $86.11 | $172K | Direct | Mar 7, 2024 (1d) |
| Feb 27, 2024 | BMRN | ↓ Sell | 1,000 | $90.35 | $90K | Direct | Feb 29, 2024 (2d) |
| Feb 9, 2024 | BMRN | ↓ Sell | 30,000 | $89.03 | $2.7M | Direct | Feb 12, 2024 (3d) |
| Jan 10, 2024 | BMRN | ↓ Sell | 20,000 | $97.28 | $1.9M | Direct | Jan 11, 2024 (1d) |
| Dec 21, 2023 | BMRN | ↓ Sell | 10,000 | $93.99 | $940K | Direct | Dec 22, 2023 (1d) |
| Aug 8, 2023 | BMRN | ↓ Sell | 10,000 | $88.21 | $882K | Direct | Aug 9, 2023 (1d) |
| May 11, 2023 | BMRN | ↓ Sell | 30,000 | $94.67 | $2.8M | Direct | May 15, 2023 (4d) |
| May 10, 2023 | BMRN | ↓ Sell | 60,000 | $94.89 | $5.7M | Direct | May 11, 2023 (1d) |
| Apr 10, 2023 | BMRN | ↓ Sell | 10,000 | $99.56 | $996K | Direct | Apr 12, 2023 (2d) |
| Apr 6, 2023 | BMRN | ↓ Sell | 10,000 | $96.13 | $961K | Direct | Apr 10, 2023 (4d) |
| Mar 13, 2023 | BMRN | ↓ Sell | 23,000 | $91.64 | $2.1M | Direct | Mar 14, 2023 (1d) |
| Feb 13, 2023 | BMRN | ↓ Sell | 21,000 | $109.84 | $2.3M | Direct | Feb 14, 2023 (1d) |
| Jan 17, 2023 | BMRN | ↓ Sell | 20,000 | $111.90 | $2.2M | Direct | Jan 18, 2023 (1d) |
| Dec 13, 2022 | BMRN | ↓ Sell | 1,000 | $106.89 | $107K | Direct | Dec 15, 2022 (2d) |
| Dec 2, 2022 | BMRN | ↓ Sell | 1,500 | $103.98 | $156K | Direct | Dec 6, 2022 (4d) |
| Oct 31, 2022 | BMRN | ↓ Sell | 1,500 | $86.55 | $130K | Direct | Nov 1, 2022 (1d) |
| Oct 14, 2022 | BMRN | ↓ Sell | 4,000 | $89.89 | $360K | Direct | Oct 18, 2022 (4d) |
| Aug 15, 2022 | BMRN | ↓ Sell | 7,000 | $94.95 | $665K | Direct | Aug 16, 2022 (1d) |
| May 6, 2022 | BMRN | ↓ Sell | 30,000 | $82.05 | $2.5M | Direct | May 9, 2022 (3d) |
| Apr 29, 2022 | BMRN | ↓ Sell | 25,000 | $83.42 | $2.1M | Direct | May 2, 2022 (3d) |
| Apr 18, 2022 | BMRN | ↓ Sell | 20,000 | $81.91 | $1.6M | Direct | Apr 20, 2022 (2d) |
| Apr 14, 2022 | BMRN | ↓ Sell | 10,000 | $83.66 | $837K | Direct | Apr 18, 2022 (4d) |
| Mar 11, 2022 | BMRN | ↓ Sell | 30,000 | $77.69 | $2.3M | Direct | Mar 14, 2022 (3d) |
| Jan 13, 2022 | BMRN | ↓ Sell | 10,000 | $88.43 | $884K | Direct | Jan 14, 2022 (1d) |
| Dec 16, 2021 | BMRN | ↓ Sell | 12,000 | $83.69 | $1.0M | Direct | Dec 17, 2021 (1d) |
| Dec 1, 2021 | BMRN | ↓ Sell | 1,500 | $87.22 | $131K | Direct | Dec 2, 2021 (1d) |
| May 10, 2021 | BMRN | ↓ Sell | 8,513 | $77.29 | $658K | Direct | May 12, 2021 (2d) |
| May 7, 2021 | BMRN | ↓ Sell | 50,000 | $78.21 | $3.9M | Direct | May 10, 2021 (3d) |
| Apr 23, 2021 | BMRN | ↓ Sell | 20,000 | $79.13 | $1.6M | Direct | Apr 26, 2021 (3d) |
| Mar 12, 2021 | BMRN | ↓ Sell | 14,000 | $77.39 | $1.1M | Direct | Mar 15, 2021 (3d) |
| Feb 19, 2021 | BMRN | ↓ Sell | 7,000 | $83.58 | $585K | Direct | Feb 22, 2021 (3d) |
| Feb 18, 2021 | BMRN | ↓ Sell | 7,000 | $85.08 | $596K | Direct | Feb 19, 2021 (1d) |
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 Jean Jacques Bienaime's insider trades
Jean Jacques Bienaime is an insider at Keros Therapeutics (KROS). Since Apr 23, 2001, Jean has reported 57 open-market purchases worth $2.7M and 276 sales worth $242.2M on SEC Form 4. In the last 12 months: 10 buys ($993K) and 1 sale ($204K).
Their filings also include option exercises (235 filings), grants and awards (112 filings), shares withheld for taxes (35 filings), gifts (13 filings). 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.