2026Q1
| Insider | Role (last 12 mo) | Shares held | Filed at |
|---|---|---|---|
| Leonard Braden Michael | 10% Owner | 14,250,000 | Aug 5, 2024 |
| Tananbaum James B. | — | 4,657,277 | Nov 3, 2021 |
| Foresite Capital Management V, LLC | — | 4,657,277 | Nov 3, 2021 |
| Foresite Capital Fund V, L.P. | — | 4,657,277 | Nov 3, 2021 |
| Foresite Capital Management III, LLC | — | 4,657,277 | Nov 3, 2021 |
| Exec date | Filing date | Insider | Role | Signal | Confidence | Shares | % of shares | Under plan? | Amount (USD) |
|---|---|---|---|---|---|---|---|---|---|
| Mar 1, 2026 | Mar 3, 2026 | Balthaser Kevin | CFO | Sell | 52.5 | -677 | -0.36% | ✗ | $1.9K |
| Feb 2, 2026 | Feb 6, 2026 | Walker Neal | CEO | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Feb 2, 2026 | Feb 6, 2026 | Davis Hugh M. | COO | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Feb 2, 2026 | Feb 6, 2026 | Kolbeck Roland Wilhelm | Chief Scientific Officer | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Feb 2, 2026 | Feb 6, 2026 | Hall Jesse Wayne | Chief Medical Officer | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Feb 2, 2026 | Feb 6, 2026 | Loerop James | Chief Business Officer | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Feb 2, 2026 | Feb 6, 2026 | Balthaser Kevin | CFO | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Feb 3, 2026 | Feb 5, 2026 | Loerop James | Chief Business Officer | Sell | 46.3 | -5,937 | -3.00% | ✗ | $20.6K |
| Feb 3, 2026 | Feb 5, 2026 | Walker Neal | CEO | Sell | 42.5 | -18,611 | -1.19% | ✗ | $64.6K |
| Feb 3, 2026 | Feb 5, 2026 | Davis Hugh M. | COO | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Feb 3, 2026 | Feb 5, 2026 | Balthaser Kevin | CFO | Sell | 46.3 | -6,449 | -3.36% | ✗ | $22.4K |
| Feb 1, 2026 | Feb 5, 2026 | Loerop James | Chief Business Officer | Sell | 46.3 | -10,686 | -5.68% | ✗ | $37.5K |
| Feb 1, 2026 | Feb 3, 2026 | Balthaser Kevin | CFO | Sell | 46.3 | -4,984 | -2.85% | ✗ | $17.5K |
| Feb 1, 2025 | Feb 3, 2026 | Loerop James | Chief Business Officer | Sell | 46.3 | -15,980 | -13.46% | ✗ | $39.6K |
| Feb 1, 2025 | Feb 3, 2026 | Loerop James | Chief Business Officer | Sell | 46.3 | -15,980 | -13.46% | ✗ | $39.6K |
| Jan 2, 2026 | Jan 5, 2026 | Walker Neal | CEO | Sell | 48.8 | -9,952 | -0.66% | ✗ | $28.7K |
| Dec 31, 2025 | Jan 5, 2026 | Loerop James | Chief Business Officer | Sell | 42.5 | -40,165 | -11.87% | ✗ | $120.1K |
| Dec 31, 2025 | Jan 5, 2026 | Balthaser Kevin | CFO | Sell | 42.5 | -26,645 | -5.49% | ✗ | $79.6K |
| Dec 2, 2025 | Dec 4, 2025 | Davis Hugh M. | COO | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Aug 1, 2025 | Aug 5, 2025 | Kolbeck Roland Wilhelm | Chief Scientific Officer | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Aug 5, 2025 | Kolbeck Roland Wilhelm | Chief Scientific Officer | Neutral | 52.5 | - | 0.00% | ✗ | - | |
| Jun 6, 2025 | Jun 9, 2025 | SCHIFF ANDREW N | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jun 6, 2025 | Jun 9, 2025 | MILANO VINCENT | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jun 6, 2025 | Jun 9, 2025 | Mehra Anand | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jun 6, 2025 | Jun 9, 2025 | Humphries William D. | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jun 6, 2025 | Jun 9, 2025 | GOWEN MAXINE | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jun 6, 2025 | Jun 9, 2025 | Molineaux Christopher P. | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| May 1, 2025 | May 5, 2025 | Hall Jesse Wayne | Chief Medical Officer | Neutral | 52.5 | - | 0.00% | ✗ | - |
| May 5, 2025 | Hall Jesse Wayne | Chief Medical Officer | Neutral | 52.5 | - | 0.00% | ✗ | - | |
| May 1, 2025 | May 5, 2025 | Walker Neal | CEO | Sell | 52.5 | -2,975 | -0.20% | ✗ | $4.1K |
| Apr 1, 2025 | Apr 3, 2025 | Walker Neal | CEO | Sell | 52.5 | -3,042 | -0.21% | ✗ | $4.5K |
| Mar 1, 2025 | Mar 4, 2025 | Balthaser Kevin | CFO | Sell | 50.0 | -727 | -0.78% | ✗ | $1.4K |
| Mar 1, 2025 | Mar 4, 2025 | Walker Neal | CEO | Sell | 52.5 | -3,277 | -0.22% | ✗ | $6.5K |
| Mar 1, 2025 | Mar 4, 2025 | Monahan Joseph | Chief Scientific Officer | Sell | 42.5 | -27,258 | -9.30% | ✗ | $54.2K |
| Feb 3, 2025 | Feb 4, 2025 | Davis Hugh M. | COO | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Feb 1, 2025 | Feb 4, 2025 | Walker Neal | CEO | Sell | 52.5 | -3,559 | -0.24% | ✗ | $8.8K |
| Feb 1, 2025 | Feb 4, 2025 | Monahan Joseph | Chief Scientific Officer | Sell | 46.3 | -11,317 | -4.65% | ✗ | $28.1K |
| Feb 1, 2025 | Feb 4, 2025 | Balthaser Kevin | CFO | Sell | 46.3 | -5,816 | -6.08% | ✗ | $14.4K |
| Feb 1, 2025 | Feb 4, 2025 | Loerop James | Chief Business Officer | Sell | 46.3 | -15,447 | -13.01% | ✗ | $38.3K |
| Dec 31, 2024 | Jan 3, 2025 | Monahan Joseph | Chief Scientific Officer | Neutral | 47.5 | -41,851 | -8.80% | ✗ | - |
| Dec 31, 2024 | Jan 3, 2025 | Balthaser Kevin | CFO | Sell | 42.5 | -38,221 | -14.72% | ✗ | $94.8K |
| Dec 31, 2024 | Jan 3, 2025 | Loerop James | Chief Business Officer | Sell | 42.5 | -40,664 | -20.17% | ✗ | $100.8K |
| Jan 1, 2025 | Jan 3, 2025 | Walker Neal | CEO | Sell | 48.8 | -17,436 | -0.60% | ✗ | $43.2K |
| Dec 10, 2024 | Dec 12, 2024 | Monahan Joseph | Chief Scientific Officer | Neutral | 27.5 | -15,000 | -8.02% | ✗ | - |
| Dec 4, 2024 | Dec 6, 2024 | Walker Neal | CEO | Sell | 40.0 | -68,343 | -4.55% | ✗ | $257K |
| Dec 2, 2024 | Dec 3, 2024 | Davis Hugh M. | COO | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Dec 1, 2024 | Dec 3, 2024 | Walker Neal | CEO | Sell | 51.3 | -2,721 | -0.20% | ✗ | $11.1K |
| Nov 25, 2024 | Biosion, Inc. | 10% Owner | Neutral | 52.5 | - | 0.00% | ✗ | - | |
| Nov 19, 2024 | Nov 20, 2024 | Mehra Anand | Director | Buy | 100.0 | +666,666 | 1537.37% | ✗ | $1.5M |
| Nov 18, 2024 | Davis Hugh M. | COO | Neutral | 52.5 | - | 0.00% | ✗ | - | |
| Nov 1, 2024 | Nov 5, 2024 | Walker Neal | CEO | Sell | 52.5 | -2,721 | -0.20% | ✗ | $5.7K |
| Oct 1, 2024 | Oct 3, 2024 | Walker Neal | CEO | Sell | 52.5 | -2,722 | -0.20% | ✗ | $3.2K |
| Sep 1, 2024 | Sep 4, 2024 | Balthaser Kevin | CFO | Sell | 47.5 | -286 | -1.14% | ✗ | $337.5 |
| Sep 1, 2024 | Sep 4, 2024 | Walker Neal | CEO | Sell | 52.5 | -2,722 | -0.20% | ✗ | $3.2K |
| Aug 9, 2024 | Aug 13, 2024 | Walker Neal | CEO | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Aug 1, 2024 | Aug 5, 2024 | Walker Neal | CEO | Sell | 52.5 | -2,722 | -0.21% | ✗ | $3.6K |
| Aug 2, 2024 | Aug 5, 2024 | Leonard Braden Michael | 10% Owner | Buy | 85.0 | +373,569 | 1.34% | ✗ | $472.8K |
| Jul 30, 2024 | Jul 31, 2024 | Leonard Braden Michael | 10% Owner | Buy | 75.0 | +273,730 | 1.00% | ✗ | $359K |
| Jul 18, 2024 | Jul 22, 2024 | Leonard Braden Michael | 10% Owner | Buy | 72.5 | +154,722 | 0.57% | ✗ | $201.8K |
| Jul 2, 2024 | Jul 5, 2024 | Leonard Braden Michael | 10% Owner | Buy | 85.0 | +352,397 | 1.34% | ✗ | $405.9K |
| Jul 1, 2024 | Jul 3, 2024 | Walker Neal | CEO | Sell | 52.5 | -2,722 | -0.21% | ✗ | $3.1K |
| Jun 27, 2024 | Jul 1, 2024 | Leonard Braden Michael | 10% Owner | Buy | 92.5 | +1,543,434 | 3.16% | ✗ | $1.7M |
| Jun 14, 2024 | Jun 18, 2024 | Leonard Braden Michael | 10% Owner | Buy | 85.0 | +545,000 | 2.44% | ✗ | $628.2K |
| Jun 11, 2024 | Jun 13, 2024 | Leonard Braden Michael | 10% Owner | Buy | 100.0 | +1,611,200 | 17.15% | ✗ | $1.8M |
| Jun 6, 2024 | Jun 10, 2024 | Humphries William D. | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jun 6, 2024 | Jun 10, 2024 | MILANO VINCENT | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jun 6, 2024 | Jun 10, 2024 | Molineaux Christopher P. | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jun 6, 2024 | Jun 10, 2024 | GOWEN MAXINE | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jun 6, 2024 | Jun 10, 2024 | SCHIFF ANDREW N | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jun 6, 2024 | Jun 10, 2024 | Mehra Anand | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jun 1, 2024 | Jun 4, 2024 | Walker Neal | CEO | Sell | 52.5 | -2,722 | -0.21% | ✗ | $2.8K |
| Jun 1, 2024 | Jun 4, 2024 | Reasons Bryan M. | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jun 1, 2024 | Jun 4, 2024 | Powell Andrew Kenneth William | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jun 1, 2024 | Jun 4, 2024 | MILANO VINCENT | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jun 1, 2024 | Jun 4, 2024 | Molineaux Christopher P. | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jun 1, 2024 | Jun 4, 2024 | Humphries William D. | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jun 1, 2024 | Jun 4, 2024 | GOWEN MAXINE | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jun 1, 2024 | Jun 4, 2024 | Mehra Anand | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jun 1, 2024 | Jun 4, 2024 | SCHIFF ANDREW N | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| May 1, 2024 | May 3, 2024 | Walker Neal | CEO | Sell | 52.5 | -2,784 | -0.21% | ✗ | $3.5K |
| Apr 1, 2024 | Apr 3, 2024 | Walker Neal | CEO | Sell | 52.5 | -3,224 | -0.25% | ✗ | $4.1K |
| Mar 1, 2024 | Mar 5, 2024 | Walker Neal | CEO | Sell | 52.5 | -3,223 | -0.25% | ✗ | $4K |
| Mar 1, 2024 | Mar 5, 2024 | Monahan Joseph | Chief Scientific Officer | Sell | 46.3 | -21,283 | -3.83% | ✗ | $26.4K |
| Mar 1, 2024 | Mar 5, 2024 | Balthaser Kevin | CFO | Sell | 47.5 | -1,417 | -2.04% | ✗ | $1.8K |
| Mar 1, 2024 | Mar 5, 2024 | Powell Andrew Kenneth William | Director | Buy | 91.3 | +14,500 | 100.95% | ✗ | $18K |
| Feb 8, 2024 | Leonard Braden Michael | 10% Owner | Neutral | 52.5 | - | 0.00% | ✗ | - | |
| Feb 1, 2024 | Feb 5, 2024 | Walker Neal | CEO | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Feb 1, 2024 | Feb 5, 2024 | Monahan Joseph | Chief Scientific Officer | Sell | 47.5 | -2,583 | -1.88% | ✗ | $3.1K |
| Feb 1, 2024 | Feb 5, 2024 | Loerop James | Chief Business Officer | Sell | 47.5 | -6,421 | -9.24% | ✗ | $7.7K |
| Feb 1, 2024 | Feb 5, 2024 | Balthaser Kevin | CFO | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jan 1, 2024 | Jan 3, 2024 | Balthaser Kevin | CFO | Sell | 47.5 | -2,536 | -11.04% | ✗ | $2.7K |
| Jan 1, 2024 | Jan 3, 2024 | Manion Douglas J. | CEO | Sell | 47.5 | -9,125 | -17.91% | ✗ | $9.6K |
| Oct 23, 2023 | Oct 25, 2023 | Monahan Joseph | Chief Scientific Officer | Sell | 41.3 | -6,000 | -4.41% | ✓ | $30.5K |
| Sep 6, 2023 | Sep 7, 2023 | Balthaser Kevin | CFO | Buy | 95.0 | +9,490 | 158.93% | ✗ | $75K |
| Sep 1, 2023 | Sep 5, 2023 | Balthaser Kevin | CFO | Sell | 47.5 | -285 | -4.56% | ✗ | $2.3K |
| Aug 28, 2023 | Aug 28, 2023 | Loerop James | Chief Business Officer | Buy | 95.0 | +14,705 | 210.58% | ✗ | $100K |
| Aug 21, 2023 | Aug 22, 2023 | Monahan Joseph | Chief Scientific Officer | Sell | 41.3 | -6,000 | -4.23% | ✓ | $43.9K |
| Aug 1, 2023 | Aug 3, 2023 | Manion Douglas J. | CEO | Sell | 46.3 | -4,437 | -15.64% | ✗ | $43.5K |
| Jul 1, 2023 | Jul 5, 2023 | Cawkwell Gail | Chief Medical Officer | Sell | 42.5 | -5,407 | -36.05% | ✗ | $56.1K |
| Jun 20, 2023 | Jun 22, 2023 | Molineaux Christopher P. | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |