Stock Markets June 23, 2026 10:59 AM

IP Group Rejects Railpen’s £613.1 Million Bid, Board Says Offer Falls Short

Railpen’s proposal of cash, an Oxford Nanopore distribution and a contingent payment fails to win unanimous board approval

By Avery Klein
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IP Group on Tuesday turned down a £613.1 million takeover proposal from Railpen, its largest shareholder, saying the bid materially undervalued the company. The offer combined 59 pence per share in cash, a distribution of IP Group’s Oxford Nanopore stake and a contingent value right of up to 5 pence tied to a potential Istesso sale. The board unanimously rejected the approach after three prior approaches from Railpen; without the contingent element the proposal equates to roughly 69.4 pence per share, a modest premium to the last close but markedly below IP Group’s net asset value of 110.4 pence per share as of December 31, 2025.

IP Group Rejects Railpen’s £613.1 Million Bid, Board Says Offer Falls Short
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Key Points

  • IP Group rejected Railpen's takeover proposal valued at approximately
  • The offer combined cash, a stake distribution in Oxford Nanopore and a contingent value right linked to Istesso; without the contingent element the proposal equated to about 69.4 pence per share.
  • Sectors potentially affected include venture-backed technology and biotech investments, and institutional asset management given Railpens role as a large pension investor.

IP Group has formally declined a takeover proposal from Railpen valued at about

IP Group said the latest approach from Railpen - which holds an 18.38% stake and is based in London - valued the company at approximately

Railpen, which manages more than


What Railpen offered

  • 59 pence per share in cash.
  • A distribution of IP Groups stake in Oxford Nanopore.
  • A contingent value right of up to 5 pence per share tied to a possible sale of IP Groups Istesso holding.

IP Groups board said it unanimously rejected the proposal. The company noted the approach followed three prior approaches from Railpen.

When excluding the contingent value right, the structure equates to roughly 69.4 pence per share, which is about a 6.7% premium to IP Groups last closing price. That arithmetic, however, stands well below the companys stated net asset value of 110.4 pence per share as of December 31, 2025 - a difference amounting to a 37.2% discount to NAV under the terms proposed.

The parties involved have not disclosed further details beyond the offer components and the boards decision. The information available indicates that Railpen, which holds an 18.38% stake, presented multiple approaches before the latest formal proposal and that IP Groups directors judged the bid to fall short of reflecting the company's stated net asset value.

Market participants and stakeholders will be watching to see whether further engagement follows, but as of the boards announcement the proposal has been declined.

Risks

  • The proposed price represents a substantial discount - 37.2% - to IP Groups reported net asset value, indicating potential shareholder resistance to the terms.
  • The contingent value right of up to 5 pence per share depends on a possible sale of Istesso, creating uncertainty about the ultimate consideration payable.
  • Railpen has made multiple approaches (three prior to the latest), suggesting ongoing negotiation risk for corporate governance and investor relations.

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