Why to repeat keywords? there is no problem but you can use other keyword that is also important. what ever you want to say in this "about-Kw1-Kw2-Kw3-Kw4 . html" its obvious from url "www . Kw1Kw2Other . com / "
but if you want to target that page then its a good url.

Don't make the URLs too long. Shorter URLs works best if you're targeting for keywords to rank on SERPs, since having too long URLs will not really be seen through result pages (will just display "http://domain.com/your-longtail-key....")

I would recommend only include 1 set of keyword per url. If you need to talk about all 4 keywords, why not write create a post about each keyword, then you get 4 keyword urls and can optimize them better.

You can use your main targeted keyword in Url.

I think there is no point of doing that.. just double the amount of backlinks and you will rank a lot better then playing with url

Don't spam url and make this easy to remember so you can get direct traffic.

Thanks guys.

Sinking in Ok after a solid round of good advice from you all. Solution for this page to keep it as short as possible, no duplications, and focussed on those four keywords (which is the company brand name) can simply be:

www . Kw1Kw2Other . com / about-our-Kw3-Kw4 . html

Should have realized this earlier, but a Warrior Forum query has done the trick. 'our' is a little superfluous but better than 'the' or nothing. Although a user-focussed 'your' would fit too. Now that's a different query altogether!

Warrior Forum is the best! Much appreciated. Seasons greetings all.