Worried about a teammate who seems to be struggling

Been doing remote work for about 6 years now. There’s this guy on my team – let’s say his name is Dave – who’s basically not contributing much of anything lately. Doesn’t ask for help when he’s stuck, barely participates, just seems completely checked out. During our team calls some people have been venting about how he’s not pulling his weight.

Here’s what’s bugging me though – I worked with Dave on a different project maybe 18 months ago and he was totally different back then. Super engaged, asking good questions, really solid work. I know he lost someone important to him recently and our company has been going through some major restructuring plus office politics that’s been wearing everyone down. Dave always struck me as more of an introvert who probably wouldn’t speak up if he was having a rough time.

I’m starting to think maybe he’s not just being lazy – could be dealing with grief or just overwhelmed by everything that’s been happening around here. We’re not really close enough that we chat outside of work stuff, but I want to find some way to reach out that shows I see him as a person, not just another name on slack.

Anyone dealt with something similar while working remote? How did you handle it and did it help at all?