UK's Keller Group rises on strong FY results, buyback plan
** Shares of engineering contractor Keller Group KLR.L rise 3.5% to 2070 pence; among top gainers on FTSE midcap .FTMC index ** Co reports FY underlying operating profit of 218.2 mln pounds ($290.8 million) vs 212.6 mln pounds a year earlier ** Also reports FY rev of 3.09 bln pounds vs 2.99 bln pounds a year earlier ** Plans to launch 100 mln pounds of share buybacks in 2026 ** KLR up ~24.14 YTD ($1 = 0.7503 pounds) (Reporting by Megha Kumari) ((Megha.Kumari@thomsonreuters.com;))