原始股 meaning in Chinese

action primitive
initial offerings
initial share
original issue stock

When citigroup bought its original stake for about us $ 70m in 2003 , it secured a steep discount to the share price
2003年，花旗集团以约7000万美元购得其原始股时，获得了比股价低得多的折扣。
Sail share , 600482 , what i have it is primitive , want to sell , excuse me i should how buying and selling ? have what procedures , program of what
风帆股份， 600482 ，我有它的原始股，想卖掉，请问我应该怎么买卖啊？有什么手续，程序什么的么？