15 December 2022 :
Konstantin Chaykin website confirms two of their chronographs were worn during ISS spacewalks.
https://chaykin.ru/en/news/Chaykin_space_watch/ 
Article in incomplete, as at
MoonwatchUniverse I established these chronographs were worn during all these events:
2021, April 9
Taken to the ISS onboard Soyuz MS-18 by cosmonaut Oleg Novitsky
2021, September 3
Worn over red-striped Orlan MKS n° 5 space suit during spacewalk : 7 hours 54 minutes
2022, April 18
Worn over Blue-striped Orlan MKS n° 4 space suit by Denis Matveyev : 6 hours 37 minutes
Worn over Red-striped Orlan MKS n° 5 space suit by Olega Artemyev : 6 hours 37 minutes
2022, April 28
Worn over Red-striped Orlan MKS n° 5 space suit by Olega Artemyev : 7 hours 42 minutes
2022, August 17
Worn over Red-striped Orlan MKS n° 5 space suit by Olega Artemyev : 4 hours 1 minute
.
Moreover, Konstantin Chaykin chronograph spotted onboard the ISS strapped over the left forearm of Blue-striped Orlan MKS n° 4 space suit, worn by female astronaut Samantha Cristoforetti, although she wore an Omega Speedmaster and Orient chronograph during the July 21, 2022 spacewalk.