Jan Bertsch, EVP, CFO & TREASURER at SIGMA ALDRICH CORP (SIAL), bought 1,500 shares at $70.60 ($106K) on 2012-11-01, disclosed to the SEC on 2013-02-20.
High-signal trade — passes our conviction filters but the AI narrative is still being generated. Check back shortly.
Something here stands out, but not much.
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