Ex: https://www.bloomberg.com/opinion/articles/2018-10-15/inside...
See, e.g., https://corpgov.law.harvard.edu/2017/01/18/insider-trading-l...
If you e.g. count trucks leaving a company factory and feel you know nonpublic information about the company's finances as a result, feel free to trade based upon this info.
Often non-public information can be inferred through careful observation, aggregation, and analysis of public information or information that can be seen from a public location.
Or you can just see nonpublic information in public.
If you're at a restaurant and you see the CEO fighting with the board and then exclaim "I quit!!" --- knowledge that the CEO quit is material nonpublic information to the board. It must be disclosed in a specific way with securities filings. They cannot trade based upon it until there is public disclosure.
You, however, can do what you want.
Then we have to ask ourselves, what made the information transition from nonpublic to public? Was it the publication by the newspaper? If so, what makes it different (other than the number of outsiders who know about it) than the information that was once held by a smaller group of outsiders, namely, the other people who were at the restaurant at the time?
This is explicitly considered by the SEC. Indeed, from their guidance on the matter-- read the last clause ;)
Of course, note this states "include" for recognized channels of distribution; there are other means by which information can become public. But "can be found out by the public" and "are broadly disseminated to the securities marketplace" are different standards.
> All information about the Company is considered nonpublic information until it is disseminated in a manner calculated to reach the securities marketplace through recognized channels of distribution and public investors have had a reasonable period of time to react to the information. Generally, information which has not been available to the investing public for at least two (2) full business days is considered to be nonpublic. Recognized channels of distribution include annual reports, prospectuses, press releases, marketing materials, and publication of information in prominent financial publications, such as The Wall Street Journal.
Also note-- e.g. your buddy Tom who has signed a nondisclosure agreement tells you that they loaded 50 trucks full of product today-- if you trade upon this you are probably committing insider trading because the information was misappropriated.
But your friend Bill who was sitting outside the factory on public land watching the loading can trade upon it freely.
You can't trade upon it until Bill's news story has been out for 2 full business days, because you already know the material nonpublic information by virtue of it having been misappropriated.
You're right in that 'nonpublic' information isn't really defined and there isn't real SEC regulation or even a whole lot of case law about it.
I think we can probably agree that
A) there are things that someone outside the company without unlawful assistance or misappropriation could figure out and use in trading
B) while someone within the company and knowing the same things based on their privileged role could not yet lawfully using in trading, because they have not been widely disseminated and are considered nonpublic information.
?
Sometimes the defendant isn't even the person who traded - it's been the person who tipped off the trader, and who gained some benefit from that trade. Where the trader is family or another close relationship, such benefit is often presumed in the law.
(Disclaimer: I am an attorney but this is not legal advice. Consult a licensed attorney in your jurisdiction.)
I would strongly caution anyone in possession of material non-public information to consult a congressman to conduct the trade on their behalf.
https://theintercept.com/2015/05/07/congress-argues-cant-inv...
(And yes, there have been reforms, but those reforms were later neutered).
I suggest you consult a securities lawyer before giving advice to others to consult security lawyers.