1. 视频介绍的很详细，同时提到硅谷其他公司的作法：
2. Business Insider的文章中
“Snap Inc. has three classes of common stock, Class A, Class B, and Class C, but the public shares it's offering will be Class A — the only class without voting rights.
Spiegel and Murphy own all three types of stock, and if either Spiegel or Murphy die, nine months later, the remaining cofounder would be able to "exercise voting control over our outstanding capital stock, " i.e. their control is going to last for a very long time.”
3. 华尔街日报：美国科技行业IPO怪现象：只要钱不给权
下图可以看到3家公司创始人对公司的话语权：
“谷歌现在发售一类无投票权的股票，Facebook也计划发行无投票权的股票。这些公司称，不同类型的股票有助于管理人士进行长期管理，而不是担心如何安抚那些只关注短期利得的投资者。“
4. 存一下ipo的文档， 有不同日期的2个版本，这里是较晚的一个：
https://www.sec.gov/Archives/edgar/data/1564408/000119312517045870/d270216ds1a.htm
5. Snapchat 更名为Snap，为产品的多样化埋下了伏笔。更名时机，把握恰当。
