准购股份证，购股公证：指一种金融工具，授予持有人在特定时间内以特定价格购买股票的权利。
购股权利证书
... 补偿性购股权 compensatory stock option 购股权利证书 stock-purchase warrant 购股权证方案 s share option scheme ...
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Symphony investors also get a five-year warrant to purchase 4.25 million shares of Isis stock.
FORBES: Biotech's Financial Lifeline