(Highspot Photo / David Kennedy) Seattle-based company Highspot plans to merge with Seismic in a deal that will combine two of the biggest players in sales and revenue enablement software. The companies announced Thursday that they’ve signed a definitive agreement to merge. Once the transaction closes, the combined company will operate under the Seismic name and be led by Seismic CEO Rob Tarkoff, who was hired in October. Highspot founder and CEO Robert Wahbe will join the board of directors of ...