I checked on the dividen today and here's the response I got from Ameritrade.
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Dear Alan R. Mercurio:
Thank you for contacting us today regarding your account.
You received Pan American restricted shares as a stock dividend from ISME.
The shares in your account that are designated as "Restricted" are shares that you received as a spin-off or distribution from one of the companies you were holding in your account on the designated distribution date. The shares may have value once the restriction has expired or can be lifted, but are not negotiable at this time according to the company. Typically, some type of SEC restriction, such as Rule 144, restricts these shares. At this time, Ameritrade has not received official information indicating the nature of the restriction, or it's expiration date. Please inquire with the issuer as to the nature of the restriction and/or it's expiration date.
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I have sent the company an e-mail and I'll let you know what the response is as soon as I hear anything.
Alan