K are mature now, L mature in October, M next year, N the year after. This shouldn't affect recovery in bankruptcy court, all will be entitled to $25 plus interest as the bottom line of the claim.
Funny thing is the ones that were going cheapest were M (I picked up some at .01ish), it seems the only reason is that nobody knows the symbol which is LHHMQ, contrast to all the rest being LEH*Q. The N somehow are pinkies and are more liquid due to market makers.
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