I want to find the most important sec filings in history, when I searched the edgar database, I find several confusions. When I search apple's filings, 10-Q report usually comes one day after the 8-k. But the company sometimes report 8-k separately, I find that items 2.02 is very important and often comes with 9.01 which is financial exhibits. Does that mean that 8-k is the most important and earliest filing? I remember Netflix shares soared after reports of 8-k. And 10-q comes several days after 8-k, maybe 3 or 5 but not fixed. So, if I want to know how this stock reacted to the financials historically, and I need to know the dates the company filed these reports, does that mean the dates a particular company file its item 2.02 in 8-k are what I am looking for.
So, I want to know which filing is more important and earlier so that I can find the dates the company filed these filings and I can search for the stock market reaction on those days.
PS: I am only important in release or amends of earnings or other important figures in financial statements. Not things like the CEO resigns or merger.