Can I use "share similar concerns to sb's"

They are somewhat different in meaning: 'similar' is not 'the same'.

Sorry, I think I did not get my point straight. I was trying to ask if it is correct to say " I share similar concerns to sb's (or should I say "I share similar concerns to sb")"?

I share my concerns with Joe. (You tell Joe what is bothering you.)
I share the same concerns as Joe. (The same things that bother you bother Joe. Both of you are concerned about the same issues or problems.)
I share similar concerns to Joe. (Joe and you are bothered by similar problems or issues.)

dirac198269 Dear all,I wonder if I can say: "I share similar concerns to sb's" or can I say "I share the same concerns as sb (or as sb's)"Thank you!

You can say those and be understood, but try this:

My concerns are [similar to / the same as] [his / hers / yours / Jack's / Mr. Blake's].

Otherwise, with 'share', it's usually said withou

Thank you! The explanation is very clear.

I see. Thank you!

Thanks for this question.

Thanks to all. I came across this helpful site.

You are welcome, Mr. Perfect Stranger.