Holding(s) in Company

In brief · summary, not quotable

Christian Leone, through Thebes Offshore Master Fund, LP and Spearhead Insurance Solutions IDF, LLC – Series Thebes, has acquired a 5.10852% stake in Ceres Power Holdings plc, representing 10,923,679 voting rights. This acquisition, which occurred on October 9, 2026, comprises 58,043 direct voting rights and 10,865,636 voting rights through financial instruments, specifically cash equity swaps with various expiration dates in 2031 and 2036. The notification was made on October 14, 2026.

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1a. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached ii :

Ceres Power Holdings plc

Please indicate if the issuer is a non-UK issuer (please mark with an “X” if appropriate)

Non-UK issuer

Reason for the notification (please mark the appropriate box or boxes with an “X”)

An acquisition or disposal of voting rights

An acquisition or disposal of financial instruments

An event changing the breakdown of voting rights

Other (please specify) iii :

Details of person subject to the notification obligation iv

Name	Christian Leone
City and country of registered office (if applicable)	New York, USA

Full name of shareholder(s) (if different from 3.) v

Name	Thebes Offshore Master Fund, LP; Spearhead Insurance Solutions IDF, LLC – Series Thebes
City and country of registered office (if applicable)	George Town, Grand Cayman; Greenville, USA
5. Date on which the threshold was crossed or reached vi :	09/10/26
6. Date on which issuer notified (DD/MM/YYYY):	14/10/26

Total positions of person(s) subject to the notification obligation

	% of voting rights attached to shares (total of 8. A)	% of voting rights through financial instruments (total of 8.B 1 + 8.B 2)	Total of both in % (8.A + 8.B)	Total number of voting rights held in issuer (8.A + 8.B) vii
Resulting situation on the date on which threshold was crossed or reached	0.02714%	5.08138%	5.10852%	10,923,679
Position of previous notification (if applicable)
A: Voting rights attached to shares
Class/type of shares ISIN code (if possible)			Number of voting rights ix	% of voting rights
Direct (DTR5.1)		Indirect (DTR5.2.1)	Direct (DTR5.1)	Indirect (DTR5.2.1)
			58,043	0.02714%
SUBTOTAL 8. A				58,043
B 1: Financial Instruments according to DTR5.3.1R (1) (a)
Type of financial instrument	Expiration date x	Exercise/ Conversion Period xi	Number of voting rights that may be acquired if the instrument is exercised/converted.	% of voting rights

SUBTOTAL 8. B 1

B 2: Financial Instruments with similar economic effect according to DTR5.3.1R (1) (b)

Type of financial instrument	Expiration date x	Exercise/ Conversion Period xi	Physical or cash Settlement xii	Number of voting rights	% of voting rights
Cash equity swap	Various dates in 2031 and 2036	N/A	Cash	10,865,636	5.08138%
SUBTOTAL 8.B.2				10,865,636	5.08138%
Name xv			% of voting rights if it equals or is higher than the notifiable threshold	% of voting rights through financial instruments if it equals or is higher than the notifiable threshold	Total of both if it equals or is higher than the notifiable threshold
Christian Leone
Luxor Capital Group LP
Thebes GP LLC
Thebes Offshore Master Fund LP				5.04356%	5.04356%