Probably not (www.investopedia.com/terms/e/ex-dividend.asp)
RD has provided some links earlier that probably are more reliable than investopedia. Also, the rules aren't always followed, so there is some uncertainty. Further, it isn't SIAF/TRW that set the ex date, so either there will not be an ex date (huh) or it hasn't been set yet (at least I assume that an ex date would be made public once it's set).
From my understanding (I'm not familiar with ex dates on US-stocks though) it should be safe to trade stocks until the record date, but I wouldn't bet on buying shares between the record date and the payment date (and/or the ex date) if I really wanted the TRW-shares. Likewise; I wouldn't be overly comfortable selling SIAF-shares in that period if I'm not willing to let go of the TRW-shares.
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