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Caledonia Mining Corporation Plc (LON:CMCL) has announced it is increasing its dividend thanks to an improved financial performance, driven by higher production and better gold prices. The quarterly dividend increases by 9.1% to 6.875 cents per share. At the same time, the AIM-quoted miner noted that it expects to commission the development of a Central Shaft at the underground Blanket mine in Zimbabwe and that it will work towards a production target of 80,000 ounces of gold per year by 2022.

Eco Atlantic Oil & Gas PLC (LON:ECO, CVE:EOG) has described Tullow Oil’s Carapa discovery, offshore Guyana, as “very important” and said that it is expecting 2020 to be a significant year. Success in Tullow’s non-operated exploration well – which confirmed high quality, light sweet crude albeit in a smaller than expected section of net pay – comes after a disappointing outcome in the lab for 2019’s Joe and Jethro discoveries (which were found to be lower grade heavy and sulphurous crude).

Anglo African Oil & Gas PLC (LON:AAOG) has given a sceptical response to a revised proposal from Jub Capital, the investment manager focused on smaller companies. Jub made its initial proposal to acquire newly issued Anglo African (AAOG) shares plus the shares currently held by corporate-financier RiverFort and its associates on the last day of 2019, sending Anglo African’s shares soaring. Jub Capital has now tweaked its proposal, offering to pump £100,000 into Anglo African by subscribing for 10mln new shares at a penny a share; previously, the company had previously offered to subscribe for 30mln shares.

Polarean Imaging PLC (LON:POLX), the medical imaging technology company, with a proprietary drug-device combination product, announced late on Thursday that it was notified on 31 December 2019 that the company’s CEO, Richard Hullihen, has purchased a total of 347,100 ordinary shares in three transactions: 100,000 at 20.22p each; 100,000 at 20.02p each; and 147,100 at 23.87p each. Following the transactions, the group added, Hullihen holds a beneficial interest in 2,928,899 ordinary shares, representing 2.56% of the company’s issued share capital with voting rights.

Regency Mines PLC (LON:RGM), the battery metals and energy storage company, has announced the completion of the buy-out of the 20% minority shareholders in its UK energy storage business, Allied Energy Services Ltd. As previously announced on 19 December 2019, Regency has issued 2,461,538 new ordinary shares to complete the buyout of the minority AES shareholders stake, with the stock locked in for six months. Regency is strategically focused around battery metals, including its flagship Mambare nickel-cobalt project and its existing UK energy storage business.

Primary Health Properties PLC (LON:PHP) said late on Thursday that it intends to pay four interim dividends in equal instalments in 2020, with the first quarterly interim dividend of 1.475 pence per ordinary share to be paid on 21 February 2020 to shareholders on the register on 10 January 2020.  The group said the dividend will comprise a Property Income Distribution (PID) of 1.275p per share and an ordinary dividend of 0.2p per share, and the company will be offering a scrip alternative with this dividend.

Impax Environmental Markets PLC (LON:IEM) said late on Thursday that it had sold a further 600,000 ordinary shares at a price of 330.0p per share from Treasury. It added that, together with the share disposal announced earlier on Thursday, it sold a total of 850,000 ordinary shares from treasury, both at a premium to the group’s prevailing net asset value.

Diversified Gas & Oil PLC (LON:DGO), the US-based owner and operator of natural gas, natural gas liquids, oil wells and midstream assets, announced late on Thursday that, in accordance with the terms of its share buyback programme, it has purchased 123,638 ordinary shares in the company at a volume-weighted average price of 106.771p per share through broker Stifel Nicolaus Europe, with the shares acquired, in due course, to be cancelled.

Metal Tiger PLC (LON:MTR), the AIM-listed investor in strategic natural resource opportunities, announced on Friday that, under its share buyback programme, its broker Arden Partners has purchased 3,600,000 shares in the company at a volume-weighted average price per share of 1.385p.

Bezant Resources PLC (LON:BZT) told investors it has been given an extension to an option deal for the  Buffalo copper-gold project, in Zambia, giving it until the end of April to complete an initial assessment of the project.