Im wondering why im not able to find a companies 10Q or 10K on the SEC website and even on their own website?

I have come across a few companies like this. I’m obviously interested in researching more about them thru their 10Qs but it’s not helpful when I can’t find them. For example MNDY. 10k or 10q isn’t on the sec website but the 10K is on MNDYs website with no quarterly earnings. I mostly look at a companies 10Qs. Ultimately I’m wondering why they might not be on the SEC website or the companies website. If anybody cares to teach me something new about this I’d appreciate it. Thanks!