Ms Cameron - best known as the co-founder of the Kathmandu clothing and outdoor equipment chain and owner of the former Chickenfeed discount stores - spent about $630,000 acquiring about seven million shares in Launceston-headquartered TasFoods on May 6 and 7.

It took her stake from 15.07 per cent of the dairy, poultry and wasabi company to 17.64 per cent (48.2 million shares).

Ms Cameron's spend-up followed TasFoods' recent March quarter report which showed earnings before interest, tax, depreciation and amortisation improved to $383,000 for the quarter, compared to negative $187,000 in the March quarter of 2019.

Sales revenue improved by 62 per cent to $16.77 million, comparing the two quarters.

The recent figures were helped by a strong contribution from acquisition Betta Milk.

Sales revenue from TasFoods' other businesses increased by 11 per cent, compared to the corresponding quarter a year earlier.

The company described the quarterly results as very pleasing, but said the coronavirus pandemic had affected it and it was continuing to "navigate the changing business environment".

Ms Cameron's new shares were acquired by the Elsie Cameron Foundation, of which she is trustee.