* Shares fall more than 4 percent (Adds details on CEO tenure, DOJ timing)
LONDON, Feb 23 (IFR) - NatWest Markets made a £159m operating loss in its core business in the fourth quarter after a 10% fall in income from a year earlier as it suffered from the same "challenging market conditions" that hurt trading at bigger rivals.
* Reviewing Australia business; exit under consideration - CEO
ZURICH, Feb 23 Sika's high share price provides scope for the Swiss construction chemicals group to offer its controlling family shareholders a better buyout offer than one the clan has agreed with France's Saint-Gobain , Sika's CEO said.
LONDON, Feb 23 Educational publisher Pearson expects its underlying profit to increase for the first time in six years in 2018 after rebuilding its business for students of the "Spotify generation" who want to rent rather than buy books.
* SLA Chairman Grimstone to stand down next year (Adds detail from statements, Phoenix CEO comment, analyst quotes, background)
LONDON, Feb 23 British Airways owner IAG expressed confidence about 2018 on Friday and pledged more cash for shareholders but a fall in fourth-quarter profit sent its shares lower.
Feb 23 Luxembourg-based SES said on Friday it was cutting its dividend by 40 percent, in a bid to strengthen its balance sheet after a year marked by the loss of one of its satellites and intense competition for its video business.
LONDON, Feb 23 Educational publisher Pearson said on Friday it was in talks with potential buyers to sell its K12 school business in the United States, as it reported 2017 adjusted operating profit at the top end of its guidance.
LONDON, Feb 23 British Airways owner-IAG posted a 19 percent rise in annual profit on Friday, broadly in line with expectations, and said it expected a further improvement in profit this year, as it announced a 500 million euro share buyback.