As far as I am aware no hard and fast 'rules' - each company usually sets its own 'policy' with regard to buying and selling of securities....
ACW This biotech stock raised $11M in a risk-off environment. Its Alzheimer's drug could change the game
OAR Chris Judd's Talk Ya Book: Orthocell building on 'enormous potential' with steady growth - and US push to come
History-making uranium sample grades and an imminent drill run. Infini Resources is poised to transform in 2025