July 30 (Reuters) - The following are the top stories in the Wall Street Journal. Reuters has not verified these stories and does not vouch for their accuracy.
- California-based Palo Alto Networks PANW.O is in talks to acquire Israeli company CyberArk Software CYBG.F in a deal that could value the Israeli cybersecurity firm at more than $20 billion.
- Union Pacific UNP.N said it would buy smaller rival Norfolk Southern NSC.N in an $85 billion deal to create the first U.S. coast-to-coast freight rail operator and reshape the movement of goods from grains to autos across the country.
- Tennessee based CBL Properties CBL.N has purchased four middle-market malls from Washington Prime Group for $178.9 million suggesting mall recovery is extending beyond luxury and high-end properties.
- Candy and snacks giant Mars announced plans to invest $2 billion more in its U.S. operations through next year to bolster the company's ongoing efforts to expand manufacturing in the country.
- U.S. largest bank JPMorgan Chase JPM.N is in advanced talks to take over Apple's AAPL.O credit card program from Goldman Sachs GS.N.
- A Trump administration effort to block all funding that flows to outside health researchers was scrapped Tuesday evening after senior White House officials intervened.