OSLO, Norway (30 August 2021) – In February 2019, TGS implemented an Employee Share Purchase Plan (ESPP) pursuant to which eligible employees can purchase TGS
common shares at a discount through payroll deductions. The ESPP operates in six-month periods, and at the end of each period, employees have the option to purchase stock at a 15% discount to the market price at the time of purchase. The plan sets a maximum purchase of 100 shares per employee per six-month period. ESPP dividends are reinvested in shares.