Nautilus Biotechnology, Inc.
NAUT · Laboratory Analytical Instruments · 127.1M shares · +44%/yr ↑ dilution · EDGAR filings ↗
Reference price $2.35 · est. market cap ~$299M — last insider sale, 2026-06-02 (estimated from the dated SEC Form 4 price × shares outstanding — not a live quote)
Grade
D44Proteomics-tools company (pre-commercial) with deep losses and cash burn, very cash-rich.
Strengths
- Very cash-rich — current ratio 13.3 (100th)
Risks
- Deep losses — ROE -38%, ROA -31%
- Cash burn — FCF -$52M
- Platform-commercialization risk — per 10-K
Notable findings
- Cash burnNegative free cash flow (-52.0M)
- Fund exitedNotable fund(s) exited this quarter: VANGUARD GROUP INC
- Chronic dilutionShare count +44%/yr over 4y (dilution, book value/share -90%)
- Strong balance sheetStrong balance sheet — $156M cash & investments, ~12 quarters of runway
- Notable holderHeld by 4 notable fund(s): GOLDMAN SACHS GROUP INC, RENAISSANCE TECHNOLOGIES LLC, STATE STREET CORP +1 more (as of 2026-03-31)
- Insider sellingInsider selling — 2 open-market sale(s) by 1 insider(s) (~$12M, last 6mo) Form 4 ↗
Key metrics
Return on equity
-37.6%
Return on assets
-30.9%
Current ratio
13.3×
Free cash flow
-$52M
Tangible book value
$157M
Cash & investments
$156M
Cash runway
12q
Insider transactions · last 18 months
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| 2026-06-02 | AH Equity Partners Bio II, L.L.C. | Sell | 4.6M | $2.35 |
| 2026-06-02 | AH Equity Partners Bio II, L.L.C. | Sell | 384K | $2.35 |
| 2026-03-04 | Patel Sujal M | Buy | 25K | $2.61 |
| 2025-11-06 | Suzuki Kentaro | Buy | 4.0K | $1.49 |
| 2025-09-08 | Patel Sujal M | Buy | 84K | $0.68 |
| 2025-09-05 | Patel Sujal M | Buy | 116K | $0.67 |
| 2025-09-04 | Murphy Matthew B. | Buy | 20K | $0.64 |
| 2025-05-29 | Mowry Anna | Buy | 15K | $0.77 |
| 2025-05-12 | Mallick Parag | Buy | 1.5K | $0.73 |
| 2025-05-08 | Mallick Parag | Buy | 12K | $0.73 |
| 2025-03-20 | Patel Sujal M | Buy | 24K | $1.00 |
| 2025-03-19 | Patel Sujal M | Buy | 53K | $0.99 |
All non-derivative Form 4 activity (SEC), newest first.
Notable events (8-K)
Recent filings
| Form | Filed | Period | Accession |
|---|---|---|---|
| 8-K | 2026-06-18 | 2026-06-17 | 0001808805-26-000027 ↗ |
| 10-Q | 2026-04-28 | 2026-03-31 | 0001808805-26-000022 ↗ |
| 8-K | 2026-04-28 | 2026-04-28 | 0001808805-26-000015 ↗ |
| 10-K | 2026-02-26 | 2025-12-31 | 0001808805-26-000011 ↗ |
| 8-K | 2026-02-26 | 2026-02-26 | 0001808805-26-000004 ↗ |
| 8-K | 2025-11-04 | 2025-11-03 | 0001808805-25-000082 ↗ |
| 10-Q | 2025-10-28 | 2025-09-30 | 0001808805-25-000080 ↗ |
| 8-K | 2025-10-28 | 2025-10-28 | 0001808805-25-000077 ↗ |
| 8-K | 2025-07-31 | 2025-07-31 | 0001808805-25-000069 ↗ |
| 10-Q | 2025-07-31 | 2025-06-30 | 0001808805-25-000072 ↗ |
| 8-K | 2025-06-23 | 2025-06-20 | 0001808805-25-000054 ↗ |
| 8-K | 2025-05-02 | 2025-05-01 | 0001808805-25-000047 ↗ |