Barinthus Biotherapeutics plc. (BRNS) - Dilution Analysis

Visualizing historical and potential share dilution over time

Dilution Analysis

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

Risk Assessment Details

Potential Dilution: 63.96% of current shares
Recent Dilution: 5.08% (2 years)
Historical Dilution Factor: minimal recent dilution
Outstanding Shares
41M
Potential Supply
26M
Additional shares possible
Splits
None
Past 2 years

Summary

BRNS currently has 40.8M outstanding shares. with significant dilution risk as 26.1M authorized shares could dilute existing holders by 64.0%. The company has minimally diluted shareholders by 5.08% over the past 2 years.

Share Structure Timeline

Outstanding Shares
Total Supply

Historical Data Points

Date Event Outstanding Supply
Apr 30, 2026

10-Q filing | 40.8M shares outstanding

41M 26M
Mar 13, 2026

10-K filing | 40.5M shares outstanding

41M 26M
Nov 07, 2025

10-Q filing | 40.7M shares outstanding

41M 26M
May 07, 2025

10-Q filing | 40.3M shares outstanding

40M 26M
Mar 20, 2025

10-K filing | 39.3M shares outstanding

39M 26M
Nov 06, 2024

10-Q filing | 39.4M shares outstanding

39M 26M
Aug 08, 2024

10-Q filing | 39.0M shares outstanding

39M 26M
May 13, 2024

10-Q filing | 38.8M shares outstanding

39M 26M
Mar 20, 2024

10-K filing | 38.4M shares outstanding

38M 26M
Nov 09, 2023

10-Q filing | 38.5M shares outstanding

39M 26M
Aug 10, 2023

10-Q filing | 38.4M shares outstanding

38M 26M
May 12, 2023

10-Q filing | 38.0M shares outstanding

38M 26M
Mar 24, 2023

10-K filing | 37.2M shares outstanding

37M 26M
Nov 10, 2022

10-Q filing | 37.2M shares outstanding

37M 26M
Aug 10, 2022

S-3/A filing: The filing is for an offering of up to $200,000,000 in the aggregate of ordinary shares, debt securities, warrants, and units, and also includes an at the market offering of ADSs with an aggregate offering price of up to $75,000,000.

37M 26M
Aug 09, 2022

S-3 filing: The filing is an S-3 registration statement for a shelf offering of up to $200,000,000 in the aggregate of ordinary shares (including those represented by American Depositary Shares), debt securities, warrants, and units.

37M 26M
Aug 09, 2022

10-Q filing | 37.2M shares outstanding

37M 26M
Jun 22, 2022

S-3 filing: This prospectus relates to the proposed resale or other disposition by the selling shareholders of 2,163,694 ordinary shares, represented by American Depositary Shares (ADSs).

37M 10M
May 11, 2022

10-Q filing | 37.2M shares outstanding

37M 7.8M
Mar 25, 2022

10-K filing | 37.2M shares outstanding

37M 7.8M
Dec 14, 2021

8-K filing: Vaccitech acquired Avidea Technologies, Inc. for an upfront amount of $40.0 million, with $27.5 million payable in American Depositary Shares (ADSs) valued at $12.71 per ADS, plus potential milestone payments in cash and ADSs. ($27.5M proceeds)

35M 7.8M
Nov 12, 2021

10-Q filing | 34.8M shares outstanding

35M 7.8M
Aug 12, 2021

10-Q filing | 34.3M shares outstanding

34M 7.8M
Jun 14, 2021

10-Q filing | 34.3M shares outstanding

34M 7.8M
Apr 27, 2021

S-1/A filing: Vaccitech plc is offering 6,500,000 ADSs, each representing one ordinary share. The underwriters have an option for a period of 30 days from the date of this prospectus to purchase up to 975,000 additional ADSs. Up to 325,000 ADSs are reserved for sale at the initial public offering price through a directed share program.

34M 7.8M
Apr 26, 2021

S-1/A filing: This is an S-1/A filing for an initial public offering of American Depositary Shares representing ordinary shares of Vaccitech plc, with an option for underwriters to purchase additional ADSs and a directed share program.

34M 7.8M
Apr 09, 2021

S-1 filing: This is an S-1 filing for an initial public offering of American Depositary Shares (ADSs) by Vaccitech plc. Each ADS represents ordinary shares. The underwriters have an option to purchase additional ADSs, and a directed share program is available for certain related parties.

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