Shares of Hong Kong-listed Landing International Development Ltd. sold off Tuesday, closing 29% lower than the previous close on Friday.

In a filing, Landing Executive Director Zhou Xueyun said that apart from its August announcement of being unable to reach Chairman Yang Zhihui, “the Board is not aware of any reasons for these price and volume movements or of any information which must be announced to avoid a false market in the Company’s securities or of any inside information that needs to be disclosed.”

Zhou also noted that Yang was still “unable to be contacted or reached as at the date of this announcement.”

The price of Landing shares fell from HKD2.52 ($0.32) at the close of Friday, to HKD1.8 ($0.23) last Tuesday, trading volume increasing from 1.1 million shares to 9.9 million.