Admission to the FTSE 250 Index

SERAPHIM SPACE INVESTMENT TRUST PLC(the "Company" or "SSIT")

Admission to the FTSE 250 Index

Seraphim Space Investment Trust plc (LSE: SSIT), the world's first listed SpaceTech investment company, announces that, following the FTSE UK Indices Annual Review, it will be included in the FTSE 250 Index with effect from the start of trading on 19 June 2026.

Elevation to the FTSE 250 represents an important milestone in the Company's development since its 2021 IPO and reflects the continued growth in portfolio value, growing investor interest in the SpaceTech market, and the recent £137m C share fund raise, reinforcing the Company's long-term growth potential. SSIT's entry into the index is expected to increase visibility amongst institutional investors, supported by index-related demand and improved liquidity.

Will Whitehorn OBE, Chair of Seraphim Space Investment Trust plc, commented:

"Our inclusion in the FTSE 250 marks a significant milestone for Seraphim Space Investment Trust and is a clear reflection of the progress we have made in scaling the Company over the last five years and demonstrating the attractiveness of SpaceTech as an institutional asset class. We believe this inclusion will further enhance the Company's visibility, improve liquidity and support continued growth in our shareholder base.

Mark Boggett, Chief Executive Officer, Seraphim Space Manager LLP, said: 

"SSIT joining the FTSE 250 reflects not only the Company's progress, but the transition of space from a specialist technology theme into a core pillar of global infrastructure. Space has become foundational to how nations operate, compete and secure their future.

The convergence of defence, sovereign capability and data infrastructure is redefining the market, with governments globally investing in resilient space architectures for security, communications and intelligence. This is driving a structural shift where demand is long-term, procurement is strategically funded and commercial innovators are now embedded at the heart of national security systems. As the only listed investment company offering diversified access to this largely privately backed ecosystem, SSIT is uniquely positioned to participate in, and help shape, this next phase of growth."

- Ends -

Media Enquiries

Notes to Editors

About Seraphim Space Investment Trust plc

Seraphim Space Investment Trust plc (the "Company") is the world's first listed investment company focused on SpaceTech. The Company seeks exposure predominantly to growth stage private financed SpaceTech businesses that have the potential to dominate globally and that are sector leaders with first mover advantages in areas such as climate, communications, mobility and cyber security.

The Company is listed on the Main Market of the London Stock Exchange.

Further information is available at: https://investors.seraphim.vc.

About Seraphim Space Manager LLP

Seraphim Space Manager LLP ("Seraphim Space" or the "Manager") is based in the UK and manages Seraphim Space Investment Trust plc.

Further information is available at www.seraphim.vc.