Promigas S A E S P : QUARTER​LY RESULTS PRESENTATION​ 2Q2023​​

RESULTS

Q2 2023

DISCLAIMER

Promigas S.A., E. S. P. ("Promigas") is a Colombian securities issuer listed in the National Registry of Securities and Issuers. As such, it is required to comply with applicable Colombian securities regulations. It has additionally made commitments as an issuer with IR recognition from BVC, and has adopted high standards of corporate governance, risk management and criteria to identify, manage and disclose conflicts of interest, which also apply to its related companies.

Promigas is primarily governed by Law 142/1994, which establishes the Regime for Household Utility Services; CREG Resolution 071/1999, which establishes the Unified Transmission Regulation of Natural Gas (RUT, for the Spanish original) in Colombia, including their amendments; regulations of the sector; current concession contracts; the company bylaws and other provisions contained in the Code of Commerce.

The Separate Financial Statements have been prepared in accordance with Colombia's Generally Accepted Accounting and Financial Reporting Standards (NCIF, for the Spanish original), as set out in Law 1314/2009, regulated by Single Regulatory Decree 2420/2015, and as amended by

Decrees 2496/2015, 2131/2016, 2170/2017, 2483/2018, 2270/2019,1432/2020 and 938/2021. The applicable NCIF's in 2021 are based on the International Financial Reporting Standards (IFRS), including their interpretations, issued by the International Accounting Standards Board (IASB). The underlying standards are the Spanish translations officially issued by the IASB in the second half of 2020. The Company used the option allowed by Decree 1311/October 20, 2021, of recognizing the change in deferred income tax arising from the increase in the income tax rate established in Social Investment Law 2155 in retained earnings under equity, and only for the 2021 period.

These Separate Financial Statements were prepared in compliance with the legal provisions that apply to the Company as an independent legal entity, and they do not include the adjustments and eliminations required for the presentation of the consolidated financial position and the consolidated comprehensive income of the Company and its subsidiaries. Consequently, the Separate Financial Statements must be read in combination with the Consolidated Financial Statements of Promigas S.A. E.S.P. and its subsidiaries. For legal effects in Colombia, the main financial statements are the Separate Financial Statements.

This report may include forward-looking statements. In some cases, such forward- looking statements will be indicated by using terms such as "may," "will," "should," "expect," "plan," "anticipate," "believe," "estimate," "predict," "potential," "continue," or their antonyms, and comparable terms. The results may differ materially from those included in this report due to changes in the current circumstances in general, in the economic and business conditions, in the interest and exchange rates, and other risks described from time to time in our filings with the National Registry of Securities and Issuers.

The users of this document are responsible for the assessment and use of the information provided herein. The matters described in this presentation and our

understanding thereof may change substantially and materially over time; however, we expressly declare that we will not be under any obligation to revise, update or correct the information provided in this report, including the forward-looking statements, and we do not intend to provide any updates on such material events before the next results report.

The contents and figures of this document are intended to provide a summary of the topics described, rather than a detailed description.

RESULTS OF OUR MANAGEMENT IN Q2 2023

RELEVANT FIGURES

FINANCIAL RESULTS: GUIDANCE 2023 VS. EXECUTION

OPERATING RESULTS: GUIDANCE 2023 VS. EXECUTION

PREPARING FOR EL NIÑO PHENOMENON

STRATEGY TO INCREASE COMPETITIVENESS

GROWTH FOR THE FUTURE

BUSINESS STRATEGY

ENERGY SOLUTIONS

COMPETITIVENESS DESPITE UNCERTAINTY

BUSINESS PRODUCTIVITY AND EFFICIENCY

SUSTAINABILITY AND NEW OPERATIONAL MODEL GENERATION

SOCIAL FOOTPRINT

DECARBONIZATION ROADMAP

FINANCIAL RESULTS BREAKDOWN

RELEVANT FIGURES

Consolidated 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.

CONSOLIDATED

Q2 2023

REVENUES1	GAS TRANSMISSION,	29%	Budget	Real
LNG AND SERVICES	$1.5 Bn
GAS DISTRIBUTION,	71%	$1.6 Bn
	E.P., FNB AND SSEE		Execution: 93%
EXPENSES	GAS TRANSMISSION	82%	Budget	Real
LNG AND SERVICES	Execution: 88%
AND	18%	$1.1 Bn
COSTS	GAS DISTRIBUTION,		$1.2 Bn
	E.P., FNB AND SSEE
EBITDA2	LNG AND SERVICES	55%	Budget	Real
GAS TRANSMISSION,	45%	$0.5 Bn
E.P., FNB AND SSEE	Execution: 110%
	GAS DISTRIBUTION,			$0.6 Bn
INCOME	LNG AND SERVICES	53%	Budget	Real
GAS TRANSMISSION,	47%	$0.2 Bn
E.P., FNB AND SSEE	Execution:124%
NET	GAS DISTRIBUTION,			$0.3 Bn

CONSOLIDATED

Year-to-Date June 2023

REVENUES1	E.P., FNB AND SSEE	72%
	GAS TRANSMISSION,	28%
	LNG AND SERVICES
EXPENSES	GAS DISTRIBUTION,
E.P., FNB AND SSEE	83%
AND	GAS TRANSMISSION,	17%
LNG AND SERVICES
COSTS	GAS DISTRIBUTION,
EBITDA2	GAS TRANSMISSION,	49%
E.P., FNB AND SSEE
	LNG AND SERVICES	51%
	GAS DISTRIBUTION,
INCOME	GAS TRANSMISSION,	54%
E.P., FNB AND SSEE
NET	LNG AND SERVICES	46%
GAS DISTRIBUTION,

Budget

$3.2 Bn

Budget

$2.3 Bn

Budget

$1.1 Bn

Budget

$0.4 Bn

Real

$3.1 Bn

Execution 96%

Real

$2.1 Bn

Execution: 92%

Real

$1.1 Bn

Execution: 106%

Real

$0.5 Bn

Execution113%

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.

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).

CIFRAS RELEVANTES

Single 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.

SINGLE

Q2 2023

32%

68%

COSTS AND EXPENSES REVENUES1

Budget

$0.3 Bn

Budget

$0.1 Bn

Real

$0.2 Bn

Execution: 96%

Real

$0.1 Bn

Execution: 99%

SINGLE

Year-to-Date June 2023

34% 66%

COSTS AND EXPENSES REVENUES1

Budget

$0.5 Bn

Budget

$0.2 Bn

Real

$0.5 Bn

Execution: 94%

Real

$0.2 Bn

Execution: 97%

EBITDA2	Budget
$0.3 Bn

Real

$0.4 Bn

Execution: 117%

EBITDA2

Budget

$0.6 Bn

Real

$0.7 Bn

Execution: 111%

Promigas	Participation Method	Budget
$0.2 Bn
	NET
	INCOME

Real

$0.3 Bn

Execution: 124%

Promigas	INCOME	Budget
Participation Method	$0.4 Bn
	NET

Real

$0.5 Bn

Execution: 113%

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.

1 Income from ordinary activities (COP 220,701 million) + Income from national concession construction contracts (COP 20,350 million).

2 Income 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).

1 Income 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).