GEOSTR Corporation revised earnings guidance for the first half ending September 30, 2021. For the period, the company expects net sales of JPY 12,700 million compared to previous guidance of JPY JPY 14,500 million, operating income of JPY 500 million compared to previous guidance of JPY JPY 500 million, profit attributable to owners of the company of JPY 300 million compared to previous guidance of JPY 300 million and earnings guidance for the JPY 9.59 per share compared to previous guidance of JPY 9.59 per share.