According to a recent SEC filing, Alpha, the UX testing platform founded by Michael Bamberger, Nis Frome, and Thor Ernstsson in 2014, has raised $8.25M in additional funding. Investors in previous rounds include Crosslink Capital, Transmedia Capital, Spider Capital, Philippe Suchet, and Cendana Capital. This brings the total funding for Alpha to $12.825M over four funding rounds.