By Charlie Conchie Consumer goods giant Unilever has kicked off a €1.5bn (£1.29bn) share buyback today as bosses look to boost its share price after a slide over the past year. The Dove-to-Marmite maker said the first tranche of a buyback programme announced in February will be worth up to €850m and will run from today until the end of August. Goldman Sachs is handling the purchase of the shares from shareholders. The consumer goods group launched a €1.5bn buyback in February after volumes increased for the first time in 10 quarters, although the consumer goods giant’s CEO said its performance…