Decided to do some digging....I went to this site:

https://pubcoceo.com/2019/01/09/58-companies-uplist-from-the-otc-to-nasdaq-nyse-in-2018/

It has the 58 companies that uplisted either to the Nasdaq or NYSE from the OTC in 2018.  58 is too many so I went with the most recent, those that uplisted in th month of December. I wanted to see if they announced their application first. Here's what I'm finding.  

-The first company Wrap Technolgies announced their application on Oct 31st 2018, interestingly it was announced it tandem with news on completion of a share offering:

https://wraptechnologies.com/wrap-technologies-completes-13-68m-financing-management-and-existing-shareholders-purchase-over-25/

-Next up is DiaMedica, they also announced their application...on November 12th 2018:  

https://www.diamedica.com/news/detail/1559/

-The case of Enochian BioSciences is interesting, they announced their application in February of 2018, and didn't start trading on the Naz until December 10th 2018.  

https://enochianbio.com/news_02232018.html

-The Alkaline Water Compay also PR'd their application to the Nasdaq, the application was announced Oct 1 2018 and the company started trading on the Naz December 10th 2018:

https://ir.thealkalinewaterco.com/press-releases/detail/205/the-alkaline-water-company-inc-announces-submission-of-its

-Lastly there's Datasea, which doesn't appear to be trading any longer.....so there's nothing to check on that one.  Wait, I found Oct 16, 2018 news of their plans to list on the Nasdaq:

https://www.nasdaq.com/article/datasea-a-chinese-it-security-and-ad-platform-sets-terms-for-5-million-us-ipo-cm1037725

So that's 5 companies that uplisted to the Nasdaq in December 2018, and all 5 announced their application/intention to list ahead of time.  For me that lends evidence to my opinion that making an application to list on the Naz....that it constitutes a material event that mandates disclosure.  

Perhaps like with Wrap we could see news this week of both the results of the share offering, and about a listing application....it would be nice.