What the filing date means
The filing date is the date EDGAR records the Schedule 13G or 13G/A submission. It is useful for understanding when the market could first see that filing.
It is not a universal purchase date. A filer can report an ownership state that existed before the filing was submitted.
What the event date means
Schedule 13 filings identify a date of the event that requires filing of the statement. That date helps explain the filing obligation or the ownership state being reported under the applicable rules.
The event date is still not necessarily a transaction date for the full position. A position can be built over time, and reporting obligations differ by filer category and circumstance.
Why the distinction matters for price analysis
If a stock moved sharply between the ownership event and the public filing, using only the filing-date price can create a misleading impression about what the institution experienced.
A useful research view can show price around the observation or event and price around public disclosure, while clearly labeling both as context rather than the filer’s actual execution price.
A simple way to read the dates
- Event or observation date: when the reported ownership state is tied to the filing.
- Filing date: when the SEC filing became public.
- Trade date: only use this label when a source actually identifies a transaction date.
- Price context: useful for comparison, but not proof of what the filer paid or received.