San Francisco head coach Kyle Shanahan said Monday that Stout is day-to-day with an AC joint sprain in his shoulder, David Lombardi of SFStandard.com reports.
Stout missed time during the fourth quarter of Sunday's 24-14 win over the Broncos due to the shoulder issue, but he was able to check back into the game after receiving treatment. Though his practice participation could be affected by the injury in Week 5, the expectation is that he'll be ready to play this coming Sunday in Seattle.