Fieldstone Bio, Inc. announced that it expects to receive funding from Rio Tinto Group, Founders Factory Limited. Published on 10/08/2026 at 12:26 pm EDT S&P Capital IQ Fieldstone Bio, Inc. announced that it will raise an incubation round of funding on October 8, 2026. The program will run for a period of 4 months. The transaction will include participation from new investors Rio Tinto Group and Founders Factory Limited. The company will receive funding as part of Mining Tech Accelerator program. The company will issue convertible preferred shares in the transaction. (C) S&P Capital IQ - 2026

Fieldstone Bio, a synthetic biology company based in Woburn, Massachusetts, has been selected for the Mining Tech Accelerator run by Founders Factory with Rio Tinto. It is one of five companies in the four-month program and receives its first backing from the mining industry. Participants receive investment and operational support. They work with Rio Tinto's technical experts and use its facilities in Western Australia to adapt their technology for mines. Fieldstone's platform combines synthetic biology, hyperspectral imaging, and data analysis to measure elements in geological samples. It aims to give drill teams results in days rather than the one to two months labs can take. In June, the US Department of Energy awarded $2 million to Fieldstone, TerraCore, and MIT to develop rapid characterisation of critical minerals on drill cores.