** Shares of mineral exploration co Osisko Mining Inc
OSK.TO fall 7.4% to C$2.64
** Co says it filed an early warning report in respect of
its holdings in O3 Mining OIII.V
** OSK acquired ~2.4 mln O3 Mining common shares on Dec. 13
for C$3.5 million, or C$1.44 per O3 share
** Co now holds a 21.3% stake in O3 Mining
** Osisko Gold Royalties OR.TO on Wednesday said it sold
OSK shares to National Bank Financial and BMO Capital Markets
for a total consideration of C$132 mln
** Including session's loss, OSK down ~24.7% YTD
(Reporting by Vallari Srivastava)
((Srivastava.Vallari@thomsonreuters.com;))