A、<p><span style="font-size:14px;font-family:宋体">首次公开发行</span></p>
B、<p><span style="font-size:14px;font-family:宋体">买壳上市或借壳上市</span></p>
C、<p><span style="font-size:14px;font-family:宋体">管理层回购</span></p>
D、<p><span style="font-size:14px;font-family:宋体">二次出售，破产清算</span></p>