Jupiter Fund Management Plc disclosed an opening position in Rotork plc under Rule 8.3 of the UK Takeover Code, showing an interest of 11,102,739 ordinary shares, or 1.35% of the company’s relevant securities, as of August 17, 2026, after selling 187,299 shares at 4.849 each. A separate August 18, 2026 Rule 8.3 filing from Dimensional Fund Advisors Ltd., acting on behalf of Dimensional Fund Advisors LP and investment advisory affiliates, related to the same Rotork 0.5p ordinary shares, ISIN GB00BVFNZH21, but the published form did not show the overall share total or percentage. Neither filing reported cash-settled derivatives, stock-settled derivatives, rights to subscribe for new securities, indemnity or option arrangements, or attached supplemental open-position forms. Rule 8.3 disclosures are required for interests of 1% or more in relevant securities of a company subject to the UK takeover regime, but the filings did not identify an offeror or offeree and do not by themselves confirm that an offer exists for Rotork.