From a photo and comment on instagram, filming appears to have occurred during the day today. At this point, it is not clear who was involved in the scenes.
Many thanks to ellenewlands_actor for sharing a photo on instagram. She posted the following with the photo:
I spent the day on the #johnwick3 set today courtesy of my husband, who is the VFX Supervisor. Obviously I can’t post any movie images or share any specifics but I was blown away at how incredible the sets look and how beautiful the footage is. The whole team is pulling together to create a seriously good movie. Being a lover of martial arts films, I’m a fan of this franchise and the incredible artistry in their stunt work. I’ve only ever done stunt work for motioncapture/video games and I had to train for gun play and proper etiquette in using firearms for a week and I kept having to be reminded not to point my line of sight at other people, lol. So I am in awe of huge stunt productions like this and I really look forward to the finished movie. It’s such a great acting lesson to be an observer on set, watching other actors and it always increases my appreciation for the entire village of people it takes to create a production.