<12,500 shares.
If the SP stays perfectly flat as of today's close (2.62) they are worth $32,301.98 on May 31st. Not really a big signing bonus for a board appointment.
That shrinks to <$30k if the price falls to execution value (2.25).
If however, he drives the company forward positively and the SP achieves the values this board speaks about ($10, $20 or $50 SP) then he is starting to earn a good signing bonus and we all benefit.
I think its a good incentive - nice "retainer" - with a good backend kicker potential!