US shale pioneer Harold Hamm is reportedly seeking to expand his footprint in Argentina’s Vaca Muerta oil basin, according to people familiar with the matter cited by Bloomberg and the Financial Post. Both outlets describe Vaca Muerta as a rapidly growing shale play and note that Hamm’s move would represent a further push into the basin’s upstream opportunities. The reports do not specify the size of the planned expansion, the timing, or whether it involves new acreage, additional development projects, or changes to existing operations. They also do not identify the companies or partners that would be involved. The information is presented as preliminary and based on sources familiar with the situation. Overall, the coverage aligns on the central point that Hamm, known for his role in developing US shale, is considering broader involvement in Argentina’s shale patch, with Vaca Muerta highlighted as one of the fastest-growing areas for shale production globally.