REG - American Century Inv Vesuvius plc - Form 8.3 - Vesuvius PLC

What happened

American Century Investment Management filed a public opening position disclosure on 26 October 2026 under Rule 8.3 of the Takeover Code, relating to Vesuvius PLC, with the position held or dealing undertaken on 23/10/2026. The filing also states the discloser is making disclosures in respect of RHI Magnesita N.V.

Confirmed

Global impact / market context

Rule 8.3 disclosures are required when a person holds interests in relevant securities representing 1% or more during a takeover situation, which means the filing signals a large investor position in Vesuvius PLC and a possible offer involving both Vesuvius and RHI Magnesita N.V.

Analyst inference

The disclosure links a major asset manager to two companies named in the same possible offer, Vesuvius PLC and RHI Magnesita N.V. Because the form covers both parties, investors may focus on how ownership stakes and voting interests could shape the outcome of any offer.

Analyst inference

What to watch

1. The disclosed position date is 23/10/2026, while the filing itself is dated 26 October 2026, so any later change in the holding would require a separate disclosure. Confirmed
2. Watch whether American Century provides further disclosures under the Takeover Code, which would show whether its interest in Vesuvius PLC or RHI Magnesita N.V. changes. Proposed
3. Watch whether a formal offer for Vesuvius PLC emerges, because an actual offer could affect the company's share price and the value of American Century's disclosed interest. Analyst inference

Evidence

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