Groupon shares rose 12.89% to $21.54 Monday afternoon after active shareholder Nick Nemeth publicly urged the board to accelerate share repurchases, maintain a strict $120 million operating cash-balance target and establish an automated Rule 10b5-1 trading plan. The proposals would seek to return excess liquidity to investors, limit unproductive cash holdings and provide sustained, programmatic support for Groupon's equity while reducing its outstanding share float. The demands come as the e-commerce marketplace continues a multi-year turnaround, with buybacks at depressed valuations potentially increasing future earnings per share and signaling confidence in the company's cash-generation capacity.