Good point Mican. What constitutes legal if Sarissa decides to increase its holdings now because let's say Denner knows a good thing or two about the new molecule. Can any legal mind(lawyers) answer this? Inquiring mind wants to know.
The director is not allowed to purchase shares either himself or beneficially based on information that is not been made to then public. I'm not an attorney but I'd say it's safe to say that denners fund would only be to add shares during the same window that management is able to buy or sell shares.
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