Answer:
A lock-up agreement
Step-by-step explanation:
A lock-up agreement -
In common terms, it is also known as initial public offering (IPO) process.
It refers to a type of agreement, which disable the insiders of the company by selling their shares for some specific time period, is referred to as a lock- up agreement.
The agreement is made in order to avoid the situation of excessive selling pressure for the first few months of trading.
From, the given scenario of the question,
GS Investment Bank adapted this method, to limit the officers from selling the shares into the market for some specific period of time.