Grey (or Expert) to Pink

[daman45]

Can you explain the "piggyback exception" and 18 month period that a shell company can complete a reverse merger? http://securities-law-blog.com/2020/09/22/the-sec-has-adopted-final-amendments-to-rule-15c2-11-major-change-for-otc-markets-companies/ from this article. If a shell custodian filed info about the preceeding company and the stock has shell status....does this mean that the stock/shell could still trade as pink current for 18 months until an executed merger? Or did that change since this article?