However, here we have the situation, likely unique, where senior members of a private company, TPL Group/Alliacense, have knowledge of MMP license signings and the fees negotiated before anyone at PTSC

I believe that what you are describing would be applicable in any situation where lawyers are engaged in pursuing settlement of claims against private or public companies. Any lawyer in such a situation could buy or sell stock based purely on the knowledge that a settlement was due, without knowing the precise terms.

Would they want to do it is another matter all together.

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Be well