After expiration of a time period, usually called the "lock-out period," insiders in the company are then able to sell their own shares. For media-promoted companies like [[Facebook]], insiders usually reap an enormous profit for themselves months or years after the IPO. | After expiration of a time period, usually called the "lock-out period," insiders in the company are then able to sell their own shares. For media-promoted companies like [[Facebook]], insiders usually reap an enormous profit for themselves months or years after the IPO. |