UPDATE 1-Drillisch shares slump as earnings guidance trimmed, 5G costs loom <!-- no image --> <div>* Parent company United Internet announces share buyback (Updates with 5G spectrum payments schedule, shares)<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=05_0BJiGAss:69dJZ-CpyLQ:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?d=yIl2AUoC8zA" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=05_0BJiGAss:69dJZ-CpyLQ:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=05_0BJiGAss:69dJZ-CpyLQ:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=05_0BJiGAss:69dJZ-CpyLQ:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=05_0BJiGAss:69dJZ-CpyLQ:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/05_0BJiGAss" height="1" width="1" alt=""></div> Posted by Reuters