Ann: PXS Announces Encouraging Results from Phase 1c Scar Study, page-14

https://thesentiment.com.au/investment-basics-june-tax-loss-selling/

What is tax loss selling?Tax loss selling is the practice of investors selling off investments or assets near the end of the financial year to create capital losses that can be used to offset capital gains and lower their tax burden.An ASX share sale could result in a gain or a loss. By selling investments at a loss, investors can generate capital losses that can be deducted from their capital gains, reducing the amount of tax they owe on their investment profits
According to brokers, tax-loss selling tends to reach its peak in the first two weeks of June. This strategy is often advised by accountants and stockbrokers to help clients manage their tax liabilities. However, market observers have noticed that tax-loss selling has been starting earlier each year and has been influencing market activity since April.

Some of that I think has affected the PXS share price ..