Whatever you think of Audio Pixels (ASX:AKP) you cannot deny it’s been a spectacular investment for those who got in early. From 15c 10 years ago to $18.45 on Friday, it has gained over 12,000 per cent.

It is the second greatest 10-year gainer behind Northern Star Resources (ASX:NST), which has advanced nearly three times that in percentage terms.

Despite the rise Audio Pixels still has not commercialised its semiconductor-based audio speakers and there’s no clear idea when that will happen.

But this didn’t stop chairman Frederick Bart investing another $493,382 into the company.

The largest trade this week was from Alliance Resources’ (ASX:AGS) Ian Gande who bought $1.3m on market as a takeover bid continues. The board has recommended shareholders take up the offer.

Another resources director who was buying was Titan Minerals’ (ASX:TTM) Matthew Carr. He dropped $108,027 to pick up more shares just a few hours after the company announced an offer for a Canada-listed gold explorer with a project in Ecuador.

A fortnight after Catalyst Metals (ASX:CYL) intersected high grade gold, non-executive director Bruce Kay bought $105,131.

Devex Resources (ASX:DEV) director Tim Goyder also bought in soon after a discovery – to the tune of $145,826.

The company’s NSW copper-gold project lies near deposits owned by St Barbara (ASX:SBM) and Sandfire Resources (ASX:SFR) and assays have shown the project has veins and alteration suggesting similar mineralisation.

Among non-resources directors, Robert Peach bought $100,000 in Amplia Therapeutics (ASX:ATX) shares.

The company, which is developing an anti-cancer drug, recently declared its manufacturing process was safe. The drug is only at the preclinical phase and a phase 1 trial is expected to begin in Q2 2020.

Andy Fung and David Stewart bought $500,000 each of MNF Group (ASX:MNF) shares.

Code Company Director Change Date Volume $ What
DEV Devex Resources Tim Goyder Buy 13 September 2,000,000 $145,826 On market
IDX Integral Diagnostics Chien Ho Sell 12 September 50,000 $160,000 On market
CYL Catalyst Metals Bruce Kay Buy 13 September 45,825 $105,131 On market
MNF MNF Group David Stewart Buy 12 September 100,000 $500,000 Off market
MNF MNF Group Andy Fung Buy 12 September 100,000 $500,000 Off market
ATX Amplia Therapeutics Robert Peach Buy 17 September 1,000,000 $100,000 Placement
IFM Infomedia Bart Vogel Buy 16 September 50,000 $101,500 On market
LYL Lycopodium Peter De Leo Sell 13 September 200,000 $1,064,115 Off mmarket
AKP Audio Pixels Frederick Bart Buy 17 September 38,482 $493,382 On market
AGS Alliance Resources Ian Gandel Buy 17 September 9,550,527 $1,337,074 On market
TTM Titan Minerals Matthew Carr Buy 16 September 576,000 $108,027 On market
WAF West African Resources Simon Storm Sell 12 September 500,000 $250,471 On market
SRG SRG Global Enzo Gulloyyi Sell 18 September 250,000 $104,282 On market
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The sellers were led by Lycopodium’s (ASX:LYL) Peter De Leo, who sold just over $1m of his shares off market.

Also, SRG Global’s (ASX:SRG) Enzo Gulloyyi sold $104,282, West African Resources’ (ASX:WAF) Simon Storm sold $250,471 and Integral Diagnostics (ASX:IDX) Chien Ho sold $160,000 worth of shares.

Gulloyyi said he was selling his shares to pay a tax bill.