Tan Chwee Choon, an executive director of Hyphens Pharma International, has been steadily selling shares on the open market. The most recent sale was made on July 22 when he sold 500,000 shares for $300,000, or an average price of 60 cents each. With this sale, he is now left with around 38.45 million shares, or 12.8%, down from 12.96% previously.

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