S N T G N Transgaz S A : Fourth Annual quarterly auctions in the PI Isaccea 1, for the gas year 2021 – 2022

18.04.2022

Dear partners,

Please be informed that the auction regarding the unbundled capacity offered at the interconnection point:

• • Isaccea 1, in the UA>RO direction (EIC code: 21Z000000000304Z, GMOIS code: PM0278)

for the firm quarterly capacity for the 4th guarter capacity of the gas year 2021/2022, was registered in the Regional Booking Platform (RBP).

The auction notification regarding the offered capacity is published on theRBP Portal.

The Network Users will be entitled to participate in the auction if:

A. they completed the registration in the RBP application. Details on the RBP registration may be found at the public website of the application at:https://ipnew.rbp.eu/RBP.eu/#register.The registration of a Network User in the RBP application is conditional on the prior conclusion of aNetwork User membership agreement for the usage of the Regional Booking Platform between the Network User and the operator of the application, meaning FGSZ Ltd.

and if, till 10:00 a.m. (UTC), on Tuesday, 26 April 2022:

B. they fulfilled the conditions established inANRE Order No. 130/24.06.2020 on measures fortransmission capacity booking at the interconnection points between the Romanian GasTransmission System and the Gas Transmission Systems of EU Member States neighbouringRomania;

C.

they submitted the auction participation guarantee at Transgaz.

The firm unbundled capacity auction will start on 02.05.2022 at 07.00 a.m. (UTC), meaning 09.00 a.m. Hungarian time (CET) and 10.00 a.m. Romanian time and Bulgarian time (EET). The Network Users may submit in the auction bids for the requested capacity in subsequent rounds, applying pre-determined price steps (ascending clock auction). Additional information regarding the auction process may be found in theOperational Rules of the Regional Booking Platform (PRRC) and in theUser Manual for theBidder Role.

The winning Network Users have the obligation to pay the capacity booking fee related to the obtained capacity, any auction premium calculated following the performance of the auction, and, if applicable, the commodity fee for the transmitted gas quantity.

For further clarifications regarding the auctions, please do not hesitate to contact us [e-mail](English) or [e-mail].

Yours sincerely,

SNTGN Transgaz SA