ENGLEWOOD, Colo. —Outside linebacker DeMarcus Ware was among a handful of Broncos players to miss Wednesday's practice.

"His back's bothering him," Head Coach Gary Kubiak said. "Getting him looked at right here and we'll have to make a decision here at some point. Something he's been playing through and it's just bothering him a little more than normal right now."

Cornerback Kayvon Webster (concussion), tight end A.J. Derby (concussion), safety T.J. Ward (concussion), defensive end Derek Wolfe (neck) and outside linebacker Shaquil Barrett also missed practice.

Linebacker Brandon Marshall (hamstring), nose tackle Sylvester Williams, tight end Virgil Green (concussion) and center Matt Paradis (hips) were limited for the Broncos' walkthrough. Trevor Siemian and Bennie Fowler were both listed as full participants.

Webster suffered his concussion against Kansas City on Sunday. Webster was down on the field for several minutes after a Chiefs player contacted Webster's head with his helmet on a block.

He was eventually able to stand and was helped to the front seat of a cart. Webster was then diagnosed with a concussion and declared out.

Kubiak said he expected to make a few roster moves to help with depth, but he did not go into detail during his Wednesday media availability. The Broncos signed three practice squad players on Wednesday.

"You'll probably see a couple other transactions this afternoon, but I'm not going through them because I don't know exactly what they are yet," Kubiak said. "I haven't been in to talk to [Executive Vice President of Football Operations/General Manager] John [Elway] yet. You'll probably see them come across the wire here this afternoon."