NOS, SGPS, S.A. informs on: Qualifying holding - Mubadala Investment Company PJSC Qualifying Holdings and Shareholders' Agreements

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are at-tached':

NOS SGPS S.A.

Registered Office: Rua Actor Antonio Silvc, no. 9, Cann Gmnde, Lisbon, Portugal

Corporate Number: 5D4 453 513

2. Reason for the notification {please sick the appropnate box or barest:

D] An acquisition or disposal of voting rights

] An acquisition or disposal of financial instruments [ ] An event ch anging the breakdown of voting righls [ ] Other {please specify)•:

3. Details of person subject to the notification obligatiorr:

ALA IW'ESTMENT COM- D dU%ED E {if apgIica!›Ie): A6U NANY MJU ‹a›gitMI

A Full name of shareholder(s) (if different from ñ.l•:

ATIC SECOND INTERNATIONAL IW'ESTMENT COMPANY LLC fdirect sh3reholder1

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

23 APRIL 2025

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

% or stng rights attached to shwes (total d 7.A"i

% or votng nqhts

throuq h fin anciai insLru-menls

ftotai or 7.s.1 + 7.B.2}

Toji or ah in %

{T.A + 7.B"i

Total number or vofng riqhts of is-sMer^

Resulting situation en the date on which threshold cas crossed or reached

32A

0

3"B

1b, 4u3, JD8

sh wes, corre-siding to 3.2% vofng rights, alt of a total number or 515,161,380 voting

rights

Position of previous notification (if cppli-cable)

5%

0

5%

25.75d,*6u

shi3 f9S, COITO-

spondino ro 5%

7. Nonfied details of the resulting situation on the date on which the threshold was crossed or

recched•:

A: Voting riphts attached to shares

shares

ISIN code (if pa

bIe"i

N ber of voting rights

°.â of voting rights

Direct

2 H'1&aEC1

Indirect

i"Art ID of D be 2OIt'1&'E<1

Dire-ct

Indirect

PTZON0AM0006

SUBTOTAL A

B 1: Financial Instruments according to ArL 13(1)(c) of Directive 200é'109.•'EC

Type of finwcial in-

strument

Expiration

dat

Exercisa*

Conversion Peri od '

Number of voting rights

that may be acquired if

the instmrnent is exer-

cised* converted.

°.I of voting rights

N/A

SUBTUTAL B.1

B 2: Financial Instruments with similar economic effect according to Art. 13t1)(D) of Directive

2004'109.•'EC

Type of fin wcial

instmment

Expiration

date'

Exercise*

Conversion Period

Physical or cash

sertlemenr'

Number of

voting rights

'-4 OF VOtII3@ FTghEB

N/A

SUBTOTAL B.2

8. Infom ation in relation to the person subject to the notification obligation pIease uck the applica-

ble !›ox):

[ ] Person subject to the notification obligation is not controlled by any natural person or legal en-tiry and does not control any other undertaking(s) holding directly or indirectly an interest in the (underlying) issuer.'•

[@ ] Full chain of controlled undertakings through which the voting rights cnd•'or the

financial instruments are effectively held starting with the ultimate controlling natural person or le-

gal enti :

% of voting rights if it P‹ of voting rights Total of both if it equals or is higher through financial in- equals or is higher than the notificble struments if it equcls than the notifiable

threshold or is higher than the threshold

notifiable thrwnold

Mubadal2 Investment

Company PJSC

Manoura Diversified

Global Holding PJSC

0

Mubadala Techndogy

Investnents (Mu!›adaJa TechnoloovJ LLC

I'

Atm second Intema-

tional InvesLmem Company LLC

S.2°o

3.2%