** Shares of Australia's Cobalt Blue COB.AX rise as much as 11.4% to A$0.078, their biggest intraday pct gain since November 28, 2025
** Stock touches its highest level since February 26, 2026
** The cobalt explorer says it has found significant cobalt sulphate samples at its Kwinana Cobalt Refinery in Australia
** Co says its cobalt sulphate meets Pre-Cursor Cathode Active Material (pCAM) buyer specifications
** Cobalt-containing pCAM is used in battery applications, especially in electric vehicles
** Despite moves, COB down 8.4% YTD
(Reporting by Aamir Sheik Khalid in Bengaluru)
((Aamir.SheikKhalid@thomsonreuters.com))