Sheryl Sandberg, the director and ex-COO of Meta Platforms Inc. (NASDAQ:META), has announced her exit from the company’s board, thus concluding her final official position at the tech giant. What Happened: Sandberg will not run for re-election to the board in May. On Wednesday, she wrote a parting note on Facebook, revealing her future advisory role at the company. “With a heart filled with gratitude and a mind filled with memories, I let the Meta board know that I will not stand for reelection this May,” she stated, adding, “Going forward, I will serve as an adviser to the company, and I will…