Welcome to our dedicated page for Transportadora de Gas del Sur SA SEC filings (Ticker: TGS), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Transportadora de Gas del Sur S.A. filings document the formal reporting of an Argentine foreign private issuer whose ADSs trade on the NYSE and whose shares trade on BYMA. Form 20-F materials and furnished Form 6-K reports cover annual and interim consolidated financial statements prepared under IFRS, operating results, financial condition, share capital, ADS mechanics, and the company’s natural gas transportation, processing, and midstream activities.
The filing record also includes material facts submitted to Argentine market authorities, including related-party gas reference prices, LPG and natural gasoline sale and resale policies, Audit Committee reviews, board approvals, and disclosures involving CIESA as controlling company. These documents frame TGS’s governance, ownership structure, Argentine energy regulatory context, and recurring capital-market reporting obligations.
GAS TRANSPORTER OF THE SOUTH INC filed an initial ownership report for operations director Claudia Beatriz Trichilo. The Form 3 shows she holds 31,563 shares of common stock directly and 18 shares indirectly through her son. This filing simply discloses existing holdings and does not report any new buy or sell transactions.
Gas Transporter of the South Inc. director files initial ownership report. Carolina Sigwald, a director of the company, submitted a Form 3 as an initial statement of beneficial ownership. The filing does not report any purchases, sales, option exercises, gifts, or other transactions in the company’s securities.
Gas Transporter of the South Inc submitted a Form 3 identifying Ruben Oscar De Muria as an officer with the title "Institutional and Regulatory." The filing shows no reportable transactions, share holdings, or derivative positions for this officer, focusing solely on his insider status.
GAS TRANSPORTER OF THE SOUTH INC filed an initial insider ownership report for Flores Gomez Hernan Diego, who serves as Legal Affairs Director. The Form 3 does not report any insider stock transactions and functions as a baseline disclosure of his status as an officer.
Transportadora de Gas del Sur S.A. (tgs) reported weaker results for 4Q2025, with comprehensive income of Ps. 123,982 million versus Ps. 170,513 million a year earlier, as operating profit fell despite higher revenues.
Revenue rose to Ps. 473,480 million, helped by tariff adjustments and growth in natural gas transportation and midstream services, but was pressured by inflation accounting effects and lower liquids export prices. Financial results swung to a loss of Ps. 10,084 million due to higher interest expense and lower returns on financial assets.
By segment, natural gas transportation and liquids both saw lower operating profit, while midstream and telecommunications improved. tgs also issued a US$500 million 10-year bond at a 7.75% coupon, its longest-dated debt, contributing to higher total financial debt of Ps. 1,705,606 million and a reduced net cash position.
Transportadora de Gas del Sur S.A. (tgs) reported that its Board of Directors approved new reference prices for SPOT gas purchases for its Plant Thermal Reduction with related parties for the 2026 summer and winter periods, and extended its policy governing LPG and natural gasoline/raw gasoline sale and resale operations from January 1, 2026 through December 31, 2026. Before approving these matters, the company’s Audit Committee issued reports under Argentine Capital Markets Act No. 26,831. On December 11, 2025, the Audit Committee informed the Board that transactions with related parties made under these reference prices and this policy can be considered reasonably conducted on an arm’s length basis, and these reports are available for review by accredited shareholders upon email request.
Transportadora de Gas del Sur (tgs) filed a 6‑K detailing 9M2025 performance, regulatory updates, and growth projects. Total revenues rose by Ps. 93,597 million year over year, led by Natural Gas Transportation, while Liquids declined.
Natural Gas Transportation revenues reached Ps. 488,348 million (vs. Ps. 374,642 million), supported by transitional tariff adjustments and the Five‑Year Tariff Review (initial 3.67% increase in 31 installments) plus monthly updates of 2.81%, 0.62%, 1.63% and 2.38% through September. Liquids revenue was Ps. 429,204 million, down Ps. 55,932 million on weaker export prices, FX effects and lower volumes after a March flood at the Cerri Complex. The event drove Ps. 45,741 million in losses and provisions, partly offset by Ps. 1,326 million in insurance advances.
Cash from operations was Ps. 411,003 million; investing used Ps. 210,496 million; financing used Ps. 186,812 million, including a Ps. 214,295 million dividend. Net cash increased by Ps. 13,695 million. In 3Q2025, comprehensive income was Ps. 112,059 million (vs. Ps. 68,802 million). The company won the GPM expansion (14 MMm³/d; works start November 1, 2025; 18‑month schedule) and received a 20‑year license extension from December 28, 2027. Subsequent event: a US$ 32,000,000 loan to support GPM capex.
Transportadora de Gas del Sur (TGS) reported stronger results for 3Q2025. Comprehensive income reached Ps. 112,059 million (Ps. 148.86 per share; Ps. 744.32 per ADS), up from Ps. 68,802 million a year ago. Operating profit was Ps. 172,026 million, rising by Ps. 33,567 million as total revenues increased to Ps. 426,518 million (up Ps. 88,591 million).
Growth was led by Liquids Production and Commercialization, where revenues rose by Ps. 70,423 million and operating profit reached Ps. 48,708 million amid higher volumes and better domestic prices. Midstream revenues increased by Ps. 24,851 million. Natural Gas Transportation revenues declined by Ps. 6,682 million, mainly due to inflation adjustments under IAS 29, partly offset by tariff increases. Financial results improved by Ps. 31,087 million. The company reported a negative net financial debt position of Ps. 89,469 million as of September 30, 2025.
TGS was awarded execution of the Perito Moreno Pipeline expansion, an estimated US$ 560 million project declared of public interest, and plans about US$ 220 million to expand capacity in final pipeline sections. Shares outstanding were 752,761,058 as of September 30, 2025.
Transportadora de Gas del Sur S.A. (tgs) reported it was awarded the National and International Public Call for Tender GPM no. 1/2025 to expand the transportation capacity of Section I of the Perito Francisco Pascasio Moreno Gas Pipeline.
The award was approved by the Argentine Energy Bureau under the Ministry of Economy via Resolution RESOL-2025-397-APN-SE#MEC dated October 17, 2025, which became effective upon publication in the Argentine Official Gazette. The tender procedure was carried out by Energía Argentina S.A. (EA), and the award to tgs was set by EA’s Board through Resolution no. 004 dated September 25, 2025.