BRIEF-Ultra Electronics confirms discussions to buy Sparton Corp
* Confirm in advanced discussions to buy whole of issued share capital of New York Stock Exchange listed Sparton Corporation
March 2 Pnm Resources Inc
* Pnm resources inc - 2017 ongoing earnings guidance to be affirmed Source text for Eikon: Further company coverage:
LONDON, June 26 L1 Retail has agreed to buy Holland & Barrett from The Nature's Bounty Co. and The Carlyle Group for 1.77 billion pounds ($2.26 billion), the companies said in a statement.