上港集团：公司于2021年实施了A股限制性股票激励计划，目前仍在有效期内

Group 1 - The core viewpoint of the article is that the company, Shanghai Port Group, is actively engaging in an incentive plan to enhance the motivation and responsibility of its core technical and management personnel [2] - The company implemented a restricted stock incentive plan for A-shares in 2021, which is still in effect [2] - The company aims to continuously improve its incentive and constraint mechanisms to promote value growth [2]