Touchstone Exploration Inc (LON:TXP, TSE:TXP) said gas flow rates from its latest Trinidad onshore well “greatly exceeded” expectations.

Mineral and Financial Investments Limited (LON:MAFL) saw a sharp uplift in its net asset value (NAV) in the year to 30 September, 2019.

Metal Tiger PLC (LON:MTR), the investor in strategic natural resource opportunities, has announced plans to buy back up to 10% of its shares in issue.

Echo Energy PLC (LON:ECHO) has switched its drill rig in Argentina from its Tapi Aike licence to its new prospect at Santa Cruz Sur where drilling of the first well at Camp Limite is scheduled to start next week.

US Oil & Gas PLC (LON:USOP) said it expects to drill East Play in the fourth quarter this year or first quarter next year if drill costings remain as currently indicated.

Regency Mines PLC (LON:RGM) has bought out minority shareholders in its UK energy storage business, Allied Energy Services, to bring the company fully under its ownership.

NQ Minerals PLC (LON:NQMI) has raised £300,000 from a UK institutional investor, which the miner said will allow it to launch an exploration programme to add higher grade resources to its Hellyer mine in Tasmania.

Eden Research plc (LON:EDEN) has received full authorisation for its nematicide formulation Cedroz in Mexico, potentially opening up the US market to the natural pesticide.

Sativa Group PLC (LON:SATI) has raised £1.38mln to fund the next stage of its development as it aims to ramp up sales in 2020.

MaxCyte Inc (LON:MXCT) has appointed a new executive vice president as it continued with a Phase I trial of its MCY-M11 cancer drug.

OptiBiotix Health PLC (LON:OPTI) shares were higher on Thursday as it inked a distribution deal for its SlimBiome weight management product in the German market.

Amryt Pharma PLC (LON:AMYT) said the integration of Aegerion Pharmaceuticals is progressing “well” and “ahead of expectations” after its acquisition in September.

OptiBiotix Health PLC (LON:OPTI) has inked a distribution deal for its SlimBiome weight management product in the German market.

Corero Network Security PLC (LON:CNS) has secured US$1.8mln in contracts with new and existing customers to supply its Smartwall software.

ImmuPharma PLC (LON:IMM) this morning began trading on Euronext Growth Brussels under the ticker ‘ALIMM’, a new listing that does not affect the trading of the shares on AIM nor, said the company, is there any intention to raise additional funds.

Circassia Pharmaceuticals PLC (LON:CIR) has rejected claims by a licensing partner that it materially breached terms of their agreement over a product for babies with breathing difficulties.

Summit Therapeutics PLC (LON:SUMM) has brought forward the date of a meeting for shareholders to approve a US$50mln fundraising to 24 December from 30 December.

Diversified Gas & Oil PLC (LON:DGOC) has appointed Melanie Little as an independent non-executive director, effective immediately, taking the size of the board to eight. Little, who is currently in charge of operations and environmental health, safety & security at NYSE-listed Magellan Midstream Partners, “brings significant experience in compliance, operations and sustainability which will continue to be a key focus as we further grow the business and service our existing assets”, said chairman David Johnson.

Nektan PLC (LON:NKTN) has appointed Paul Hughes as a non-executive director with immediate effect, citing his “extensive corporate banking and commercial experience, with a focus on fundraising, the turnaround of loss-making businesses, risk management and fast-growing private and public companies” as key attributes.