Promigas S A E S P : QUARTERLY ​RESULTS REPORT Q2-2023​

1. RELEVANT FIGURES

FINANCIAL RESULTS - SUMMARY

Loyal to our budget discipline, we use Zero Base methodology for the preparation of the annual budget -which eliminates aspects inherent to previous periods and obligates us to justify expenses based on the added value- so that the estimates reflect the result of our activities, which as of June 2023 were higher than budgeted, demonstrating that we always tend towards responsible and sustainable growth.

1Income from ordinary activities (COP 1.4 billion) + Income from national concession construction contracts (COP 24,810 million) + Income from foreign concession construction contracts (COP 64,444 million)

2Income from ordinary activities (COP 1.5 billion) - cost of sales (COP 1,016,921 million) - selling and administrative expenses (COP 140,841 million) + depreciation, amortization, provisions and impairment (COP 91,158 million) + share in income of

associates (COP 79,906 million) + other, net (COP 76,812 million) + dividends received (-COP 0.6 million) impairment on losses from credit activities (COP 21,011 million).

1Income from ordinary activities (COP 2.9 billion) + Income from national concession construction contracts (COP 50,155 million) + Income from foreign concession construction contracts (COP 152,174 million).

2Income from ordinary activities (COP 3.1 billion) - cost of sales (COP 2.05 billion) - selling and administrative expenses (COP 261,244 million) + depreciation, amortization, provisions and impairment (COP 183,599 million) + share in income of

associates (COP 155,054 million) + other, net (COP 77,476 million) + dividends received (COP 1,198 million) +

share in	income of	associates (COP 155,054 million) -
impairment	on	losses	from	credit	activities
(COP 42,357 million).

1Income from ordinary activities (COP 220,701 million) + Income

from national concession construction contracts (COP 20,350 million).

2Income from ordinary activities (COP 241,052 million) - cost of sales (COP 115,388 million) - sales and administrative expenses (COP 59,574 million) + depreciation, amortization, provisions and impairment (COP 47,805 million) + equity in income of controlled companies (COP 160,059 million) + equity in income of associated companies (COP 79,759 million) + other, net (- COP 193 million) - impairment in loss from credit activities (COP 193 million).

1Income from ordinary activities (COP 430,973 million) + Income from domestic concession construction contracts (COP 42,539 million).

2 Income from ordinary activities (COP 473,512 million) - cost of sales (COP 223,632 million) - sales and administrative expenses (COP 106,920 million) + depreciation, amortization, provisions and impairment (COP 95,466 million) + equity in earnings of controlled companies (COP 306,615 million) + equity in income of associated companies (COP 154,854 million) + other, net (- COP 1,200 million) - impairment in losses from credit activities (COP 981 million).

• The under-execution of income is mainly due to the fact that the budget expected El Niño phenomenon to start earlier and at a higher intensity, generating income from the dispatch of the thermal plants on the Atlantic Coast and the WACC.
• Strict control of our AOM costs and expenses has allowed us to achieve a higher EBITDA despite lower income.
• As a consequence of the above, our net income significantly exceeds what was expected for the analyzed periods.

OPERATIONAL RESULTS - SUMMARY

NATURAL GAS TRANSMISSION

As of the second quarter of 2023, Promigas and its portfolio of transportation companies in Colombia achieved a volume of natural gas transported of 466 MMCFD through a pipeline network of 3,290 km with a total capacity of 1,156 MMCFD.

TRANSMISSION REVENUES

Figures of 100% controlled companies, before eliminations. Does not include concession construction revenues.

PROMIGAS - ATLANTIC COAST

At the end of the second quarter of the year, Promigas' gas pipelines reached a length of 2,753 km and 955 MMCFD of transportation capacity.

Industrial and Domestic Sector

There was an increase in industrial consumption in the 2Q of 2023, motivated by greater demand for natural gas from the Cartagena Refinery, and in the accumulated year, due to maintenance in a hydrogen unit of the Refinery. On the other hand, domestic demand increased in the departments of Atlántico and Bolivar.

Thermoelectric Sector

During June 2023, the thermal volume reached 168.7 MMCFD (42% above the budget). In this month the highest volumes were registered, reaching 235 MMCFD on June 24, being the highest peak of the year.

Likewise, in the second quarter of 2023, consumption increased due to expectations of a high probability of El Niño Phenomenon, for which reason hydroelectric plants have increased their water reserves, restricting its use and thus giving greater participation to thermal generation.

SUBSIDIARIES

Transported Volume (MMCFD) - Promioriente

At the end of the second quarter of the year, Promioriente' s gas pipelines reached a length of 335 KM and 49.9 MMCFD of transportation capacity.

2023 volumes affected by low production levels of the Gibraltar well due to continuous problems presented in the Caño Limón-Coveñas pipeline.

Transported Volume (MMCFD) - Transmetano

At the end of the second quarter of the year, Transmetano' s gas pipelines reached a length of 190 KM and 77.6 MMCFD of transportation capacity.

Decrease in consumption in the industrial sector due to lower demand for its products.