• Shares of Australia's Tesoro Gold decline as much as 9.2% to A$0.735, hitting their lowest level since mid-September 2025

• Shares mark their biggest intraday pct drop since June 11

• The gold explorer discloses A$40 million ($28.24 million) placement at A$0.73 per share, a 9.9% discount to company's last close on October 27

• Says proceeds will be used to advance resource growth and development activities at its El Zorro gold project in Chile

• Adds unit to acquire Inversiones Marlin Limitada's 5% stake in Tesoro Mining Chile SpA, via which company holds interest in El Zorro, thus increasing ownership of the project to 95.4%

• More than 255,000 shares change hands, about 1.5x the 30-day average

• YTD, stock down 39.3%, including session's moves

($1 = 1.4162 Australian dollars)

(Reporting by Subhalakshmi Dey in Bengaluru)