Page 1

GEK TERNA GROUP OF COMPANIES Press Release Athens , September 15th , 2026 GEK TERNA Group : 1H 2026 Financial Results • Adjusted Net Profit Attributable to Shareholders¹ € 83.4m , increased by 22.1 % - EPS € 0.83 . • Increase in operating profitability ( adj . EBITDA ) ² of the Group by 12.2 % - Increase in adj . EBITDA of Concessions segment by 35.2 % that now contributes 63 % of the Group total following the start of the concession period of Egnatia Odos . • Sustainable and healthy margins in construction with backlog at € 8.9bn . • • Strong financial position and enhanced investment capacity following the attainment of Investment Grade status from S & P and Moody's and the raising of € 659m in new capital . Adjusted Net Debt at Parent level is effectively zero - Net cash position ( excl project finance facilities ) ³of € 280m ( pro - forma for the placement of shares ) 4 . • Group's total available cash and cash equivalents at € 2.2bn ( pro - forma for the placement of shares ) ª . GEK TERNA Group ( Bloomberg : GEKTERNA GA / RIC : HRMr.AT ) announces its financial results for 1H 2026 . During the first half of 2026 , the GEK TERNA Group recorded a further strengthening of its financial metrics and operating profitability , driven primarily by the Concessions segment , while the Construction segment posted another strong half - year , maintaining high activity levels and making a significant contribution to the Group's results . At the same time , the Group undertook significant strategic and financial initiatives that further bolster its growth prospects . At corporate level , achieving an investment - grade credit rating from S & P and Moody's ( " BBB - " / " Baa3 " ) marked a significant milestone for the Group , confirming its strong financial position and broadening its access to funding sources . In their assessments , both agencies highlight , among other factors , the Group's strong position in long - term motorway concessions , their governing contractual and regulatory framework , and the predictability of operational performance and cash flows resulting from the long duration of the Group's concession portfolio . 1 Net profit to shareholders excluding non - operating items . In more detail : a ) loss of € 3.9m from interest rate derivatives , vs a loss of € 1.4m the respective last year period , b ) profit of € 4.2m from the valuation of derivatives contracts for electricity and natural gas transactions vs a profit of € 0.7m in 1H 2025 , in the Electricity segment c ) profit of € 5.7m from valuation of various participations vs a profit of € 7,8m in 1H 2025 , d ) loss of € 4.4m from the provisions for the cost of the Employees Share Bonus Scheme for 2024-27 vs a loss of € 7.4m in 1H 2025 , and e ) loss of € 1.1m from impairment of fixed assets . 2 The definition of the alternative performance measurement indicators APMI is available in section F of the Management Report of the Board of Directors , of the Financial Statements for 1H 2026 . 3 Details and terms for the specific items in the IR Report for 1H 2026 * Including the € 659m from the successful placement of 15.5m shares completed on 3 July 2026 , which will be recognized in the third quarter of the year .