SES: NOTIFICATION OF MAJOR HOLDINGS

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September 1, 2026 10:51 AM EDT

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LUXEMBOURG--(BUSINESS WIRE)-- Regulatory News:

Filing reference	15278
Submitted at (Luxembourg time)	2026-08-17 18:38

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

SES S.A.

2. Reason for the notification:

An acquisition or disposal of voting rights

3. Details of person subject to the notification obligation:

Name: Davide Leone and Partners Investment Company Limited

City and country of registered office (if applicable): London, UK

4. Full name of shareholder(s):

The person is the same as the person subject to the notification (section 3)

5. Date on which the threshold was crossed or reached:

2026-08-13

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

% of voting rights
attached to shares
(total of 7.A)

% of voting rights through
financial instruments (total
of 7.B.1 + 7.B.2)

Total of both in % (7.A + 7.B)

Total number of
voting rights of
issuer

Resulting situation on the date on which threshold was crossed or reached

5.01

0.00

5.01

521,257,776

Position of previous notification (if applicable)

N/A

7. Notified details of the resulting situation on the date on which the threshold was crossed or reached:

A: Voting rights attached to shares

Class/type of shares (ISIN code if possible)	Number of voting rights direct	Number of voting rights indirect	% of voting rights direct	% of voting rights indirect
LU0088087324	0	26,115,926	0.00	5.01
SUBTOTAL A (Direct & Indirect)	26,115,926		5.01

B.1: Financial Instruments according to Art. 12(1)(a) of the Transparency Law

Type of financial instrument	Expiration date	Exercise/ Conversion Period	Number of voting rights that may be acquired if the instrument is exercised/ converted	% of voting rights
N/A

B.2: Financial Instruments with similar economic effect according to Art. 12(1)(b) of the Transparency Law

Type of financial instrument	Expiration date	Exercise/Conversion Period	Physical or cash settlement	Number of voting rights	% of voting rights
N/A

8. Information in relation to the person subject to the notification obligation:

Full chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held starting with the ultimate controlling natural person or legal entity:

Name

% of voting rights held by
ultimate controlling person or entity or
held directly by any
subsidiary if it equals or is higher
than the notifiable threshold

% of voting rights through financial
instruments held by ultimate
controlling person or entity or held
directly by any subsidiary if it equals
or is higher than the notifiable threshold

Total
of
both

Directly controlled
by (use number(s)
from 1st column)

N/A

0.00

9. In case of proxy voting:

N/A

10. Additional information:

N/A