REG - Seraphim Space I.T. - Admission to the FTSE 250 Index

Seraphim Space Investment TrustAnnouncement

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RNS Number : 2886H  Seraphim Space Investment Trust PLC  08 June 2026

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

 Seraphim Space Manager LLP (via SEC Newgate)
 Mark Boggett, CEO / James Bruegger, CIO / Rob Desborough
 SEC Newgate (Communications advisers)                     seraphim@secnewgate.co.uk (mailto:seraphim@secnewgate.co.uk)
 Clotilde Gros / George Esmond / Harry Handyside           +44 (0) 20 3757 6767
 Deutsche Numis
 Nathan Brown / Vicki Paine                                +44 (0) 20 7545 8000
 J.P. Morgan Cazenove
 William Simmonds / Rupert Budge                           +44 (0) 20 3493 8000
 Ocorian Administration (UK) Limited                       seraphimteam@ocorian.com (mailto:seraphimteam@ocorian.com)
 Lorna Zimny / Birgitte Horn                               +44 (0) 28 9078 5880

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
(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 (http://www.seraphim.vc) .

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