TC(SH:603421) Zhong Zheng Wang·2026-01-16 13:55Group 1 - The core point of the article is that Dingxin Communications (603421) is under investigation by the China Securities Regulatory Commission (CSRC) for suspected short-term trading of its stock by its vice president, Yuan Zhishuang [1] - The investigation is focused solely on Yuan Zhishuang and is not expected to have a significant impact on the company's daily operations [1] - The company will actively cooperate with the CSRC during the investigation process [1] Group 2 - Dingxin Communications announced that a major shareholder, Wang Tianyu, has reduced his stake in the company by selling 1.3228 million shares from January 14 to January 16, 2026 [1] - Following this transaction, Wang Tianyu's shareholding percentage decreased from 6.14% to 5.94%, which is a change that touches the 1% threshold [1]