I think you get confused about blackout period requirements. They could have purchased for most of the the last year and didn’t as the stock tanked. This is a good sign positive news soon.
Looks like she was "placing a bet" on positive results, yet to be known. https://www.sec.gov/Archives/edgar/data/ Note that a purchaser or seller who is aware of material nonpublic information cannot buy or sell even during an “open” window. In such a case, the Insider with knowledge must not trade until the second trading day after the information of which he or she is aware becomes public.
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