Aura Biosciences, Inc.
AURA · Biological Products, (No Diagnostic Substances) · 103.4M shares · +113%/yr ↑ dilution · EDGAR filings ↗
Reference price $6.42 · est. market cap ~$664M — last insider sale, 2026-06-16 (estimated from the dated SEC Form 4 price × shares outstanding — not a live quote)
Grade
D46Clinical/early-stage biotech — ocular-oncology clinical, heavy burn, well-funded.
Strengths
- Liquidity — current ratio 8.1 (73rd)
Risks
- Pre-revenue, deep losses — per metrics
- Pre-revenue/clinical-stage — history of losses & need for capital per risk factors
- Binary clinical & funding risk — per 10-K
Notable findings
- Exec changeRecent 8-K item 5.02 8-K ↗
- Cash burnNegative free cash flow (-85.2M)
- Fund exitedNotable fund(s) exited this quarter: VANGUARD GROUP INC
- Chronic dilutionShare count +113%/yr over 3y (dilution, book value/share -93%)
- Notable holderHeld by 5 notable fund(s): STATE STREET CORP, GOLDMAN SACHS GROUP INC, RENAISSANCE TECHNOLOGIES LLC +2 more (as of 2026-03-31)
- Insider sellingInsider selling — 10 open-market sale(s) by 7 insider(s) (cluster of 7 insiders, ~$40M, last 6mo) Form 4 ↗
Key metrics
Return on equity
-77.6%
Return on assets
-62.7%
Current ratio
8.1×
Free cash flow
-$85M
Tangible book value
$137M
Cash & investments
$144M
Cash runway
7q
Insider transactions · last 18 months
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| 2026-06-16 | Gibney Anthony S | Sell | 13K | $6.42 |
| 2026-06-11 | Bitetti Teresa Marie | Grant | 15K | — |
| 2026-06-11 | Srivastava Sapna | Grant | 15K | — |
| 2026-06-11 | Johnson David Michael | Grant | 15K | — |
| 2026-06-11 | Mattessich Antony C. | Grant | 15K | — |
| 2026-05-19 | Holles Natalie C. | Grant | 600K | — |
| 2026-05-19 | Holles Natalie C. | Grant | 554K | — |
| 2026-05-07 | Matrix Capital Management Company, LP | Sell | 6.9M | $5.64 |
| 2026-04-16 | Kilroy Conor | Sell | 12K | $7.02 |
| 2026-03-02 | Kilroy Conor | Grant | 62K | — |
| 2026-03-02 | Gibney Anthony S | Grant | 71K | — |
| 2026-03-02 | de los Pinos Elisabet | Grant | 166K | — |
| 2026-03-02 | Plavsic Mark | Grant | 62K | — |
| 2026-03-02 | Hopkins Janet Jill | Grant | 89K | — |
| 2026-03-02 | Elazzouzi Amy | Grant | 45K | — |
| 2026-02-17 | Kilroy Conor | Sell | 12K | $5.05 |
| 2026-02-17 | Plavsic Mark | Sell | 16K | $5.05 |
| 2026-02-17 | Hopkins Janet Jill | Sell | 20K | $5.06 |
| 2026-02-17 | Elazzouzi Amy | Sell | 8.5K | $5.06 |
| 2026-02-17 | de los Pinos Elisabet | Sell | 48K | $5.06 |
| 2026-01-20 | Elazzouzi Amy | Sell | 1.6K | $4.86 |
| 2026-01-20 | de los Pinos Elisabet | Sell | 17K | $4.86 |
| 2025-11-17 | Hopkins Janet Jill | Sell | 17K | $5.42 |
| 2025-10-29 | Elazzouzi Amy | Sell | 896 | $6.35 |
| 2025-10-29 | de los Pinos Elisabet | Sell | 9.0K | $6.35 |
| 2025-10-16 | Plavsic Mark | Sell | 12K | $6.35 |
| 2025-08-18 | Elazzouzi Amy | Option exercise | 2.6K | $5.07 |
| 2025-08-18 | Elazzouzi Amy | Option exercise | 1.1K | $5.48 |
| 2025-08-18 | Elazzouzi Amy | Option exercise | 547 | $5.48 |
| 2025-08-18 | Elazzouzi Amy | Option exercise | 547 | $5.21 |
| 2025-08-18 | Elazzouzi Amy | Option exercise | 4.7K | $2.74 |
| 2025-08-18 | Elazzouzi Amy | Option exercise | 1.1K | $3.16 |
| 2025-08-18 | Elazzouzi Amy | Option exercise | 2.3K | $4.25 |
| 2025-08-18 | Elazzouzi Amy | Sell | 7.7K | $6.70 |
| 2025-06-17 | Srivastava Sapna | Grant | 13K | — |
| 2025-06-17 | Johnson David Michael | Grant | 13K | — |
| 2025-06-17 | Mattessich Antony C. | Grant | 13K | — |
| 2025-06-02 | Gibney Anthony S | Grant | 150K | — |
| 2025-06-02 | de los Pinos Elisabet | Option exercise | 11K | $5.07 |
| 2025-06-02 | de los Pinos Elisabet | Tax withheld | 9.9K | $6.16 |
| 2025-05-16 | Johnson David Michael | Buy | 20K | $4.90 |
| 2025-05-16 | Gibney Anthony S | Buy | 50K | $4.90 |
| 2025-05-16 | Gibney Anthony S | Sell | 1.5K | $5.15 |
| 2025-04-16 | Elazzouzi Amy | Sell | 897 | $5.49 |
| 2025-04-16 | Kilroy Conor | Sell | 7.2K | $5.49 |
| 2025-03-31 | Bitetti Teresa Marie | Grant | 21K | — |
| 2025-02-18 | Plavsic Mark | Sell | 2.2K | $7.75 |
| 2025-02-18 | Elazzouzi Amy | Sell | 1.4K | $7.75 |
| 2025-02-18 | Hopkins Janet Jill | Sell | 2.5K | $7.75 |
| 2025-02-18 | de los Pinos Elisabet | Sell | 20K | $7.75 |
| 2025-02-03 | de los Pinos Elisabet | Grant | 194K | — |
| 2025-02-03 | Plavsic Mark | Grant | 90K | — |
| 2025-02-03 | Hopkins Janet Jill | Grant | 121K | — |
| 2025-02-03 | Kilroy Conor | Grant | 90K | — |
| 2025-02-03 | Elazzouzi Amy | Grant | 45K | — |
| 2025-01-21 | de los Pinos Elisabet | Sell | 16K | $7.67 |
| 2025-01-21 | Elazzouzi Amy | Sell | 1.0K | $7.67 |
All non-derivative Form 4 activity (SEC), newest first.
Notable events (8-K)
| Date | Items | |
|---|---|---|
| 2026-06-11 | Shareholder vote | filing ↗ |
| 2026-05-11 | ResultsOtherExhibits | filing ↗ |
| 2026-05-05 | Material agreementExhibits | filing ↗ |
| 2026-05-04 | Material agreementResultsOther | filing ↗ |
| 2026-05-04 | Exec/director changeReg FDOtherExhibits | filing ↗ |
| 2026-03-30 | ResultsOtherExhibits | filing ↗ |
| 2025-11-13 | ResultsOtherExhibits | filing ↗ |
| 2025-08-13 | ResultsOtherExhibits | filing ↗ |
Recent filings
| Form | Filed | Period | Accession |
|---|---|---|---|
| 8-K | 2026-06-11 | 2026-06-11 | 0001193125-26-267676 ↗ |
| 10-Q | 2026-05-11 | 2026-03-31 | 0001193125-26-216808 ↗ |
| 8-K | 2026-05-11 | 2026-05-11 | 0001193125-26-216743 ↗ |
| 8-K | 2026-05-05 | 2026-05-04 | 0001193125-26-206804 ↗ |
| 8-K | 2026-05-04 | 2026-04-29 | 0001193125-26-202414 ↗ |
| 8-K | 2026-05-04 | 2026-04-30 | 0001193125-26-204049 ↗ |
| 10-K | 2026-03-30 | 2025-12-31 | 0001193125-26-130401 ↗ |
| 8-K | 2026-03-30 | 2026-03-30 | 0001193125-26-130383 ↗ |
| 10-Q | 2025-11-13 | 2025-09-30 | 0001193125-25-278817 ↗ |
| 8-K | 2025-11-13 | 2025-11-13 | 0001193125-25-278810 ↗ |
| 10-Q | 2025-08-13 | 2025-06-30 | 0001193125-25-179426 ↗ |
| 8-K | 2025-08-13 | 2025-08-13 | 0001193125-25-179418 ↗ |