🕵️ Nautilus Biotechnology, Inc. ($NAUT)
SEC insider & ownership activity, last 12 months · CIK 1808805 · every row links its SEC filing
Over the last 12 months insiders sold $11.8M against $71K of open-market buying. AH Equity Partners BIO II, L.L.C. sold $11.8M in discretionary trades (Jun). Parag Mallick added 17.4% → 17.6%; Sujal Patel added 15.7% → 16.3%. No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
2 buyers, $71K (2 lots) · 1 seller, $11.8M (2 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| AH Equity Partners BIO II, L.L.C. | 0 | – | 2 | $11.8M | Jun 2, 2026 |
| Sujal Patel | 1 | $65K | 0 | – | Mar 4, 2026 |
| Suzuki Kentaro | 1 | $6K | 0 | – | Nov 6, 2025 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Parag Mallick | 17.6% | 13D | Mar 2, 2026 | filing ↗ | |
| Sujal Patel | 16.3% | 13D | Mar 2, 2026 | filing ↗ | |
| Joseph Edelman | 9.1% | 13D | Jun 30, 2026 | filing ↗ | |
| Perceptive Advisors LLC | 9.1% | 13D | Jun 30, 2026 | filing ↗ | |
| Perceptive Life Sciences Master Fund, Ltd. | 9.1% | 13D | Jun 30, 2026 | filing ↗ | |
| Benjamin A. Horowitz | exited | 13D | Sep 9, 2026 | filing ↗ | |
| Marc L. Andreessen | exited | 13D | Sep 9, 2026 | filing ↗ | |
| AH Equity Partners BIO II, L.L.C. | exited | 13D | Sep 9, 2026 | filing ↗ | |
| AH BIO Fund II, L.P. | exited | 13D | Sep 9, 2026 | filing ↗ | |
| Andreessen Horowitz LSV Fund II, L.P. | exited | 13D | Sep 9, 2026 | filing ↗ | |
| AH Equity Partners LSV II, L.L.C. | exited | 13D | Sep 9, 2026 | filing ↗ |
Planned insider sales (Form 144)
No sale notices filed in the last 12 months.
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Material agreement (1.01) | Sep 11, 2026 | filing ↗ |
| Agreement terminated (1.02) | Sep 11, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Sep 11, 2026 | filing ↗ |
| Earnings (2.02) | Jul 28, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 28, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 17, 2026 | filing ↗ |
| Earnings (2.02) | Apr 28, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 28, 2026 | filing ↗ |
| Earnings (2.02) | Feb 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 26, 2026 | filing ↗ |
| Other events (8.01) | Nov 3, 2025 | filing ↗ |
| Earnings (2.02) | Oct 28, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 28, 2025 | filing ↗ |