There are no such thing as free shares. You buy stock and lose or make money. Getting up on stock price was not, or was it ever, free. You took risks to get it.
It's 100% your money. Those 13k shares you have is YOUR money. If the stock drops from here you lose that portion of money. You can cash out and the money is yours. So if it drops yes, you are actually losing money.
I don't know that stock so not giving any buy/sell advice. Just my thoughts on "free shares"