Can I sell my GPT?

Could you please advise me on a matter regarding GPT? I've been wondering if it's possible to sell my GPT holdings. I've seen some fluctuations in the market recently and am considering cashing out. However, I'm not entirely sure how the process works or if there are any restrictions or regulations I should be aware of. Could you guide me through the steps involved in selling GPT and provide any insights you may have on the current market conditions? I'd greatly appreciate your expertise in this matter.