Okyo Pharma (OKYO) chairman Gabriele Cerrone has increased his stake in the clinical-stage company to 10.9 million shares, or 20.5% of the company's issued shares, with the purchase of 25,000 ordinary shares at $1.40 per share, the company said Tuesday.

The purchase was made through Panetta Partners, an entity in which Cerrone has a beneficial interest, the company said.