The proposed area where Pebble mine would be built, 320 km southwest of Anchorage, within the Bristol Bay watershed. (Image courtesy of Northern Dynasty Minerals)
Northern Dynasty Minerals (TSX: NDM) (NYSE-A: NAK) saw its biggest single-day share drop since 2020 on Thursday due to insider selling activity.
The company’s Toronto-listed shares plunged as much as 55% to C$1.41 before recovering to around C$2.27 in late afternoon. Earlier in the day, trading of the stock was briefly halted as it nosedived. At press time, the company’s market capitalization stood at C$1.2 billion ($870 million).
Its New York-listed shares followed a similar pattern, falling by more than 55% before paring losses.
The company has yet to respond to MINING.com’s request for comment.
The drop comes after various insiders, including VP engineering Stephen Hodgson and chairman Robert Dickinson, sold shares during…


