NOS, SGPS, S.A.

(Public Company)

Registered Offices: Rua Actor António Silva 9 Campo Grande,

parish of Lumiar, 1600-404 Lisbon

Registration number before the Companies Registrar of Lisbon

Manager Transactions (Amendment to the Announcement published on 9 April 2021)

Translation of the Portuguese Original

(In the event of any discrepancy, Portuguese Original shall prevail)

Lisbon, 23 April 2021 Pursuant to the terms of article 248-B of the Portuguese Securities Code (Código dos Valores Mobiliários) and article 14 of CMVM Regulation no. 5/2008, NOS, SGPS, SA Luís Moutinho do

Nascimento, Manager.

Initial Disclosure /

Amendment

Amendment

Nature of the

Acquisition of shares under the Short and Medium Term Variable Remuneration

Transaction

Regulation, approved by the General Shareholders Meeting of NOS on 23 April 2014

Location

OTC

Date

31-03-2021, 08h00

Issuer Company

NOS, SGPS, S.A.

LEI

5493004DM8FGIY6QKF37

Financial Instrument

Shares

Reason for the

Obligation to report to the Portuguese Securities Commission a transaction which

disclosure

Price and Volume

3.144 (per share) / 20,906 shares

Aggregate

information:

Not Applicable

aggregate volume and

price

Shares Held After

Transaction / ISIN

20,986 shares / PTZON0AM0006

Code

Note: Vesting of shares with a 90% discount under the Short and Medium Term Variable Remuneration Regulation of NOS, SGPS, S.A..

www.nos.pt/ir.

Lisbon, 23 April 2021

Contacts

Maria João Carrapato

Head of Investor Relations

Email:ir@nos.pt

Tel.: +351 21 782 4725

Fax: +351 21 782 4735

Attachments

Disclaimer

Nos SGPS SA published this content on 23 April 2021 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 23 April 2021 21:23:09 UTC.