Pilkington stock was hit a couple of months ago when the company announced that Stuart Chambers, an executive director of the company, would replace Paolo Scaroni as chief executive officer.
See FT Investor story: Pilkington shares drop on reshuffle
Subsequently, Paolo Scaroni, the departing Pilkington chief executive officer, sold £825,000 of shares, and the new chief executive Stuart Chambers and executive director Andrew Robb made a £130,000 profit between on the sale of options. Also executive director Warren Knowlton raised almost £260,000 by selling the bulk of his holding in the glass maker ahead of his planned departure in July.