Actually, you'll be able to purchase shares of Geron just about any time you'd like....and, since the USA is a free country, there is no need to "forever hold your peace"....or 'piece', either, for that matter.
I am sorry if you do not understand my message. I will make it as straight forward as possible so that you do not get confused.
Of course you will be able to buy shares at anytime as long as it is a publicly traded company. You are correct this is the USA. Genius you are mr Maine! You just will have to pay 10x, 20x or more in the near future. (The near future by my explaination is 36 months or less). am not certain why I am wasting my time writing this for you maine. It seems that if you do not understand how to read the headlines so silly me for expecting you to understand my post.