The PR didn't say world renowed -- implying that it is known all over the world. It said internationally renowed -- implying that it is known internationally. Perhaps that means in the Middle East and Europe (in the fields they specialize in of course).
I never claimed it was easy to find the CEO and/or CFO of private companies in the UAE or Saudi Arabia. And I certainly wouldn't claim it's easy to pick out which companies do hundreds of millions of dollars in business. That's the whole point -- You can't show that all UAE and Saudi private companies doing similar size deals as Wessal have easily-obtainable CEO/CFO information. There's no point being concerned about not finding an English web site link to the President of Wessal if you can't show that all other Saudi or UAE private companies of similar size have links to their CEO's (or at least the overwhelming majority).
Here's a link to a "Vista"-named company in the Middle East: