One Health Group PLC (OHGR), the Sheffield-based private healthcare provider, has disclosed a change in a major shareholder's voting rights following the issue of new shares. A TR-1 regulatory notification filed on 6 November 2026 confirms that Derek Bickerstaff's percentage holding in the company fell from 40.12% to 39.84% after new shares were issued on 29 October 2026 as a result of share option exercises. The dilution was not driven by any disposal of shares by Bickerstaff himself, but entirely by the expansion of One Health Group's total share count.

Key Points

  • One Health Group PLC (OHGR) — Sheffield-based private healthcare provider listed on a UK market
  • Derek Bickerstaff's voting rights percentage fell from 40.12% to 39.84% following new share issuance on 29 October 2026
  • Bickerstaff retains 5,550,000 voting rights; threshold crossing date was 30 October 2026
  • Investors may watch whether further option exercises dilute major shareholder positions or alter the company's ownership structure

Derek Bickerstaff's 39.84% Stake in One Health Group After October 2026 Share Issuance

The TR-1 notification confirms that Derek Bickerstaff, based in Sheffield, UK, holds 5,550,000 voting rights directly in One Health Group PLC, representing 39.84% of the company's total voting rights as of 30 October 2026. His absolute number of shares remained unchanged from the previous notification at 5,550,000, meaning the reduction in percentage terms resulted solely from the issuance of new shares to other parties following share option exercises on 29 October 2026. The notification states the issuer was informed on 6 November 2026, with a threshold-crossing date of 30 October 2026.

Share Option Exercise on 29 October 2026 Triggers Dilution of Major Holder's Percentage

The additional information section of the TR-1 form states explicitly that "the change in the percentage of shares held is due entirely to the issue of new shares following the exercise of share options on 29 October 2026." This confirms no market transaction or block sale took place. The ISIN for the relevant shares is GB00BNNT0595. For investors monitoring shareholder concentration at One Health Group, this filing signals that option exercises within the company have begun to modestly reduce the proportional influence of its largest individual shareholder.

Bickerstaff Family Combined Holding Disclosed Across Two Registered Holders

The notification also breaks down the 5,550,000 shares between two individuals. Derek Bickerstaff holds 4,450,000 shares directly, equating to 31.94% of voting rights, while Michelle Bickerstaff holds 1,100,000 shares, representing 7.90%. The combined total of 5,550,000 shares accounts for the full 39.84% reported at the aggregate level. The form confirms Derek Bickerstaff is not controlled by any natural person or legal entity and does not control any other undertaking that holds an interest in One Health Group, as indicated by the relevant box marked in section 9 of the notification.

One Health Group's Shareholder Structure Remains Heavily Concentrated After Disclosure

Even following the dilutive effect of the October 2026 option exercise, One Health Group's shareholder structure remains highly concentrated, with a single combined family holding accounting for approximately 39.84% of total voting rights. Investors may be watching whether further share option exercises — which the company has not quantified in this announcement — could continue to gradually reduce this percentage over time. The company did not disclose the total number of shares currently in issue, the identities of those who exercised options, or any broader guidance on the scale of its outstanding option programmes.