Aura Biosciences, Inc. (AURA) - Dilution Analysis

Visualizing historical and potential share dilution over time

Dilution Analysis

Medium Risk
Moderate dilution risk
Last updated: March 30, 2026

Risk Assessment Details

Potential Dilution: 8.54% of current shares
Recent Dilution: 20.93% (2 years)
Historical Dilution Factor: moderate recent dilution
Outstanding Shares
60M
Potential Supply
5.2M
Additional shares possible
Splits
None
Past 2 years

Summary

AURA currently has 60.3M outstanding shares. with limited dilution risk as only 5.15M additional shares (8.5%) are authorized for issuance. The company has diluted shareholders by 20.93% over the past 2 years through share issuances.

Share Structure Timeline

Outstanding Shares
Total Supply

Historical Data Points

Date Event Outstanding Supply
Mar 30, 2026

10-K filing | 60.3M shares outstanding

60M 5.2M
Aug 13, 2025

10-Q filing | 58.0M shares outstanding

58M 5.2M
May 15, 2025

10-Q filing | 50.1M shares outstanding

50M 5.2M
Mar 24, 2025

10-K filing | 49.7M shares outstanding

50M 5.2M
Nov 12, 2024

10-Q filing | 49.7M shares outstanding

50M 5.2M
Aug 08, 2024

10-Q filing | 49.5M shares outstanding

50M 5.2M
May 09, 2024

10-Q filing | 49.5M shares outstanding

49M 5.2M
Mar 27, 2024

S-3 filing: Aura Biosciences files an S-3 form to register the offering of common stock, preferred stock, and debt securities, with a total proposed amount of $350,000,000. They also filed a prospectus supplement, dated March 27, 2024, for offering of common stock up to $75,000,000 through Jefferies LLC as a sales agent.

38M 5.2M
Mar 27, 2024

10-K filing | 49.5M shares outstanding

50M 5.2M
Nov 09, 2023

8-K filing: Aura Biosciences, Inc. completed an offering of 11,000,000 shares of common stock at a price of $9.00 per share, resulting in net proceeds of approximately $92.6 million for the company. ($99.0M proceeds)

38M 5.2M
Nov 09, 2023

10-Q filing | 38.2M shares outstanding

38M 5.2M
Aug 09, 2023

10-Q filing | 37.9M shares outstanding

38M 5.2M
May 11, 2023

10-Q filing | 37.8M shares outstanding

38M 5.2M
Mar 15, 2023

10-K filing | 37.8M shares outstanding

38M 5.2M
Nov 10, 2022

10-Q filing | 29.3M shares outstanding

29M 5.2M
Nov 01, 2022

S-3 filing: Aura Biosciences files an S-3 form to register a shelf offering of up to $250,000,000 in common stock, preferred stock, debt securities, warrants, and/or units and an additional offering for common stock up to $75,000,000 through Jefferies LLC as sales agent.

29M 5.2M
Aug 11, 2022

10-Q filing | 29.3M shares outstanding

29M 5.2M
May 12, 2022

10-Q filing | 29.3M shares outstanding

29M 5.2M
Mar 23, 2022

10-K filing | 29.2M shares outstanding

29M 5.2M
Nov 24, 2021

10-Q filing | 29.2M shares outstanding

29M 5.2M
Oct 25, 2021

S-1/A filing: This S-1/A filing relates to an offering of common stock with an over-allotment option. The company intends to use the net proceeds from this offering to advance the clinical development of AU-011 for the treatment of choroidal melanoma and NMIBC, to develop our platform and for general corporate purposes.

23M 5.2M
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