Tianshan Aluminum's (SHE:002532) controlling shareholder, Shihezi Jinlong Energy Industry Chain, pledged 2.4% of the company's total capital for debt investment, according to a Shenzhen bourse filing on Wednesday.

The stake, which accounts for 111 million shares, was pledged to Huatai Securities (SHA:601688, HKG:6886) until Nov. 2, 2027.