Cameron McLatchie, chairman of British Polythene Industries (BPI), has upped his stake in the plastics company with the purchase of more than £200,000 worth of shares.
He bought 150,000 shares at 115p and his wife Leslie paid the same amount for 50,000.
Following the purchases, McLatchie has just over 462,000 shares, or about 1.75% of the Greenock-based firm, while Leslie McClatchie has 219,000.
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BPI makes plastics for bakery product packaging, refuse sacks and other applications.
The company saw profits fall last year after feeling the impact of higher input costs.
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