To: BUCHAREST STOCK EXCHANGE

       FINANCIAL SUPERVISORY AUTHORITY

Current report according to ASF Regulation no. 5/2018

Report date: 06.11.2026

ROMPETROL WELL SERVICES S.A. PLOIESTI

Registered headquarters: Ploiesti, 2bis Clopotei Street,

Prahova County

Phone/fax no.: 0244.544.101/ 0244.522.913

Sole Registration Code: RO 1346607

Registration number with the Trade Registry: J1991000110297

Subscribed and paid up share capital:  27,819,090 lei

Regulated market on which the securities issued by the company are traded:  Bucharest Stock Exchange (symbol PTR)                                

Significant event to report:  Notification of holdings below 5% of the voting rights of Rompetrol Well Services

The subscribed, Rompetrol Well Services S.A. (hereinafter referred to as “Company”), informs its investors and shareholders that, on 05 November 2026, the Company received the Notification of

major holdings from KJK BALKAN HOLDING Sarl , attached to the present report..

According to the notification, on 04 November 2026, KJK BALKAN HOLDING Sarl sold a number of PTR shares, dropping below the 5% threshold provided by article 71 of Law 24/2017 on issuers of financial instruments and market operations, thus reaching a holding of 4.9483 % of the total voting rights of PTR.

The present current report is issued in accordance with the provisions of art. 74 para (6) of Law 24/2017 on issuers of financial instruments and market operations.

General Manager

Mr. Georgian Stefan Florea