25 May 2021 Through the Iridium satellite network, DDK Positioning delivers high precision GPS accuracy of within 5 centimeters, while standard GPS accuracy is within 10 meters. DDK Positioning Solutions Utilize the Iridium® Satellite Constellation to Deliver Five Centimeter GNSS Accuracy to Industrial IoT Users MCLEAN, Va., May, 2021 Iridium Communications Inc. (NASDAQ: IRDM) today announced that it has made a strategic investment in DDK Positioning (DDK), an Aberdeen, Scotland based provider of enhanced Global Navigation Satellite System (GNSS) accuracy solutions. DDK uses the Iridium ® network to provide global precision positioning services that can augment GNSS constellations, including GPS and Galileo, to significantly enhance their accuracy for critical industrial applications. DDK is also developing similar services for other GNSS constellations, such as GLONASS and Beidou. Terms of the investment are not being disclosed.