• Theta Gold Mines' shares fall as much as 7.1% to A$0.195, lowest since May 22

• TGM raises $18.6 million through a share placement

• Issue price of A$0.18/shr represents a discount of 14.3% to stock's last close

• Proceeds will be used to complete plant construction of TGME Gold Mine Project and for first gold production in 2027

• About 732,000 shares changed hands, 2.6 times the 30-day avg - LSEG data

• TGM up ~14% YTD, including the session's moves

(Reporting by Anjali Singh in Bengaluru)