UK Form 8.3 filings highlight stake changes

Multiple institutional investors filed Form 8.3 disclosures on 26 March 2026, detailing positions in UK-listed companies involved in takeover situations. The filings, dated for dealings and positions as at 25 March 2026, cover Beazley plc, Spire Healthcare Group plc, Picton Property Income Ltd and Idox plc.

Form 8.3 is used for public opening position disclosures or dealing disclosures by persons with interests in relevant securities representing 1% or more, as required under Rule 8.3 of the UK Takeover Code.

Massachusetts Financial Services Company reported its position in Beazley plc common stock (ISIN GB00BYQ0JC66). The firm owned and/or controlled 11,360,881 Beazley shares, representing 1.90% of the relevant securities.

The disclosure notes that Massachusetts Financial Services Company and/or its affiliates do not have discretion regarding voting decisions for 577,774 of those shares, although they are included in the total interest figure.

On 25 March 2026 the firm executed a sale of 11,013 Beazley common shares at a price of 12.6574 pounds per share. The company reported no cash-settled or stock-settled derivative positions and no indemnity, option or other dealing arrangements related to Beazley securities.

Dimensional Fund Advisors Ltd, whose parent is Dimensional Fund Advisors LP and acting on behalf of its investment advisory affiliates, disclosed a position in Spire Healthcare Group plc 1p ordinary shares (ISIN GB00BNLPYF73). Dimensional reported ownership and/or control of 12,171,152 shares, equal to 3.02% of Spire’s relevant securities.

The filing states that Dimensional Fund Advisors LP and/or its affiliates do not have discretion regarding voting decisions for 56,192 of these shares, though they are included in the total. Dimensional expressly disclaimed beneficial ownership of the shares described in the Form 8.3.

On 25 March 2026 Dimensional purchased 9,214 Spire Healthcare shares at 1.5013 pounds per share and recorded a transfer in of 1,880 additional 1p ordinary shares. The firm reported no derivative positions and no indemnity or option arrangements relating to Spire securities.

In a separate Form 8.3, Dimensional Fund Advisors Ltd disclosed its interest in Picton Property Income Ltd ordinary NPV shares (ISIN GB00B0LCW208). Dimensional held 3,406,331 shares, representing 0.66% of the relevant securities.

For this filing, Dimensional indicated it was also making disclosures in respect of another party to the offer, namely a consortium comprising LondonMetric Property plc and Schroder Real Estate Investment Trust Limited.

On 25 March 2026 Dimensional purchased 15,518 Picton ordinary NPV shares at 0.7824 pounds per share and recorded a transfer in of 119 shares. No cash-settled or stock-settled derivative positions and no related indemnity or option arrangements were reported.

Canaccord Genuity Wealth Limited, acting for discretionary clients, filed a public opening position disclosure regarding Idox plc, under Rule 8.3 of the Takeover Code. The firm reported interests in 29,316,754 Idox 1p ordinary shares, representing 6.35% of the relevant securities.

The filing states that Idox plc is an associate of the Canaccord Genuity Group. The disclosure relates solely to 1p ordinary shares and reports no cash-settled or stock-settled derivatives.

Canaccord noted that shares totalling 272,799 were transferred out of its discretionary management on 25 March 2026. No additional rights to subscribe for new securities were specified in the excerpt provided.