Complex sentence: Shinya Takahashi, formerly General Manager of the SPD division, serves the General Manager of the new division, as well as supervisor for both the Business Development and Development Administration & Support divisions.
Split into simpler sentences: Shinya Takahashi, formerly General Manager of the SPD division, will now act as the General Manager of the new division. He will also act as supervisor for both the Business Development and Development Administration & Support divisions.