Yes, but you likely have to enlarge the top two holes to M7 (7mm, which is a 6 1/3 volumetric cup length in funny measurements) or so, mine where enough to maybe fit M5.
80€ for two, for me. I opted to just widen the holes that exist anyway on my VESA arms (branded Bontec on Amazon).
About time if you ask me
Update: I mounted the 4030s (8030b) to
these and so far they're working great, and I've convinced myself the low-mids are less screwed up now, but no before/after measurements to corroborate, so that's a maybe.
I did have to enlarge one hole on each mount, which took all of 3 minutes. The holes on the stands I bought were big enough for M6, but a full mm of play was not available. Turns out the Genelec spacing is 76mm and the VESA spacing is 75mm. Which feels intentional to me, like Genelec was saying "well, you can use a VESA mount... but I hope you know what you're doing. We're not going to help you make bad decisions." Moving the mounting points 1mm to be compatible with VESA out of the box would have been trivial, so I think they just didn't want people mounting them without thinking about what they were doing.
Or perhaps I'm reading way too far into this.
I also happen to have a nice laser level so I used that to set the height and angles. Very handy if you happen to have one, although using a laser to angle your speakers really puts one's audio-nerdiness into sharp relief.
Anyway, thanks for the tips.