TGS Files 2025 Annual Report on Form 20-F

Rhea-AI Summary

Transportadora de Gas del Sur (NYSE: TGS) filed its 2025 Annual Report on Form 20-F with the U.S. SEC on April 22, 2026. The report covers the fiscal year ended December 31, 2025 and is available on the company website and on the SEC website.

Key facts: TGS transports approximately 60% of Argentina's natural gas, operates over 5,700 miles of pipelines, and reports a firm contracted capacity of 89.4 MMn3/d. The controlling shareholder, CIESA, holds 53.83% of total share capital. Hard copies of financial statements are available free from investor relations.

AI-generated analysis. How Rhea-AI works. Not financial advice.

News Market Reaction – TGS

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-1.00% News Effect

On the day this news was published, TGS declined 1.00%, reflecting a mild negative market reaction.

Data tracked by StockTitan Argus on the day of publication.

What This Means

This announcement centers on TGS filing its 2025 Form 20‑F, giving investors detailed insight into o...

Analysis

This announcement centers on TGS filing its 2025 Form 20‑F, giving investors detailed insight into operations and risks. The company transports about 60% of Argentina’s gas, with 48% of 2025 sales in U.S. dollars and 41% of revenues from regulated transportation. Long-term contracts cover 74.2% of deliveries and the license was extended 20 years, but investors should monitor tariffs, hyperinflation impacts, and Argentine policy changes disclosed in the filing.

Key Figures

Gas transported share: 60% Pipeline network: 5,700 miles Firm capacity: 89.4 MMm3/d +5 more

8 metrics

Gas transported share 60% Share of natural gas consumed in Argentina transported by tgs

Pipeline network 5,700 miles Length of gas pipelines operated by tgs

Firm capacity 89.4 MMm3/d Firm contracted transportation capacity

Controlling stake 53.83% Portion of total share capital owned by CIESA

Dollar-denominated sales 48% Share of 2025 consolidated sales denominated in U.S. dollars

Regulated transport revenues 41% Share of 2025 revenues from natural gas transportation

Long-term contract share 74.2% Share of 2025 average daily deliveries under long-term contracts

License extension term 20 years Extension of transportation License from December 28, 2027

Regulatory & Risk Context

Short Interest: 0.56%

Short Interest

0.56% of shares outstanding

as of 2026-05-29 Days to cover: 1

Key Terms

form 20-f, ifrs, ias 29, hyperinflationary economy, +3 more

7 terms

form 20-f regulatory

"tgs announced that today it filed its annual report on Form 20-F for the fiscal year..."

Form 20-F is the standardized annual disclosure that non-U.S. companies must file with the U.S. securities regulator when their shares are traded in the U.S.; it contains audited financial statements, a plain-language description of the business, management discussion, governance details and key risk factors. It matters to investors because it provides a consistent, comparable company “report card” and rulebook, helping buyers assess financial health, governance and risks before investing.

ifrs financial

"financial statements are prepared in Argentine pesos under IFRS and restated for..."

International Financial Reporting Standards (IFRS) are a set of common accounting rules used by many companies worldwide to prepare financial statements, so numbers like revenue, profit and assets are measured in the same way across borders. For investors, IFRS matters because it makes it easier to compare the financial health and performance of different companies—like using the same ruler to measure different objects—reducing surprises and helping informed investment decisions.

ias 29 financial

"restated for hyperinflation in accordance with IAS 29. Argentina is treated as..."

IAS 29 is an accounting rule that tells companies how to adjust their financial statements when they operate in economies with very high inflation, so numbers reflect current purchasing power rather than outdated prices. For investors, it matters because it converts historic figures into meaningful, comparable values—like updating old price tags to today’s dollars—helping assess real profits, assets and liabilities and avoid being misled by inflation-distorted results.

hyperinflationary economy financial

"Argentina is treated as a hyperinflationary economy, with three‑year cumulative..."

An economy experiencing extremely fast and accelerating increases in prices where the local currency rapidly loses purchasing power; everyday items and services become far more expensive in a short time, like water gushing through a hole in a bucket. For investors this matters because it erodes the real value of cash, savings and fixed-income returns, distorts company financial statements and pricing, and often leads to currency controls, volatile asset prices and higher risk of defaults or losses.

tariff approvals regulatory

"Natural gas transportation, a regulated business... depends on tariff approvals and a five‑year tariff review..."

Approval of tariffs means a government or regulator has authorized new or changed taxes or fees on imported or exported goods. Investors care because these approvals act like a sudden change in a product’s shipping cost or a new toll on sales, which can raise costs, squeeze profits, disrupt supply chains, or shift consumer prices — all of which can alter a company’s earnings and the value of its stock.

form 3 regulatory

"filed an initial Form 3 as an Independent Alternate Director. The filing lists..."

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

american depositary shares financial

"The filing shows direct holdings of 6,000 American Depositary Shares and 58,755 shares..."

American depositary shares (ADSs) are a way for investors in the United States to buy shares of foreign companies without dealing with international markets directly. They represent ownership in a foreign company's stock and are traded on U.S. stock exchanges, making it easier for American investors to buy, sell, and own parts of companies from around the world.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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BUENOS AIRES, Argentina, April 22, 2026 /PRNewswire/ -- Transportadora de Gas del Sur S.A. ("tgs" or "the Company") (NYSE: TGS, MERVAL: TGSU2) announced that today it filed its annual report on Form 20-F for the fiscal year ended December 31, 2025 (the "2025 Annual Report") with the U.S. Securities and Exchange Commission (the "SEC"). The 2025 Annual Report can be accessed by visiting the Company's website at www.tgs.com.ar as well as on the SEC's website at www.sec.gov. In addition, shareholders may receive a hard copy of the Company's complete financial statements free of charge by requesting a copy from Carlos Almagro (calmagro@tgs.com.ar) or Leandro Perez Castaño (leandro_perez@tgs.com.ar) in TGS's Investor Relations Office at +(54-11) 3751-5100.

tgs is the leader in Argentina in the transportation of natural gas, transporting approximately 60% of the gas consumed in the country, through more than 5,700 miles of gas pipelines, with a firm contracted capacity of 89.4 MMn3/d. It is one of the main natural gas processors. In addition, tgs´ infrastructure investments in Vaca Muerta basin will allow to grow significantly in the provision of services to natural gas producers, positioning tgs as one of the main Midstreamers in Argentina. tgs shares are traded on NYSE (New York Stock Exchange) and BYMA (Bolsas y Mercados Argentinos S.A.). The controlling company of tgs is Compañía de Inversiones de Energía S.A. ("CIESA"), which owns 53.83% of the total share capital. CIESA's shareholders are: (i) Pampa Energía S.A. with 50%, (ii) Grupo Investor Petroquímica S.L. (member of the GIP group, led by the Sielecki family) and PCT L.L.C. with the remaining 50%.

/s/ Alejandro M. Basso
Alejandro M. Basso
Chief Financial Officer and
Services Vice President

View original content:https://www.prnewswire.com/news-releases/tgs-files-2025-annual-report-on-form-20-f-302750899.html

SOURCE TGS

FAQ

Where can I access TGS's 2025 Annual Report on Form 20-F (NYSE: TGS)?

The report is available on the company's website and on the U.S. SEC website. According to the company, investors can also request a free hard copy from its Investor Relations office by email or phone.

What operational scale does TGS report in its 2025 Form 20-F filing?

TGS reports transporting about 60% of Argentina's natural gas and operating more than 5,700 miles of pipelines. According to the company, its firm contracted capacity is 89.4 MMn3/d and it is a major natural gas processor.

How is TGS ownership structured after the 2025 annual filing (NYSE: TGS)?

The company states that controlling shareholder CIESA owns 53.83% of total share capital. According to the company, CIESA is in turn owned 50% by Pampa Energía and 50% by other investors associated with GIP and PCT.

Can shareholders obtain printed financial statements for TGS's 2025 Form 20-F?

Yes. Shareholders may request a free hard copy of the complete financial statements from Investor Relations. According to the company, requests can be sent to the listed contacts by email or by calling the provided phone number.

Does the 2025 Form 20-F mention TGS's growth plans in Vaca Muerta (NYSE: TGS)?

The filing highlights infrastructure investments in the Vaca Muerta basin aimed at expanding services to natural gas producers. According to the company, these investments are expected to position TGS as a leading midstream provider in Argentina.