You seem to have discovered that you have a specific license to do this, so all is well. Most authors will get such a license whin they give up copyright. In the absence of that it isn't permitted.
There was a time when an author got a quite large number of "offprints" of their article specifically intended for limited sharing. I vaguely remember about 100 printed copies from an article in an ACM journal.
However: Such "very small scale sharing" is widely done, and unlikely to be objected to if you do it in a very limited way. In particular, sharing within a working group is "considered" fine.
While it might be, for some, a technical violation you can lessen the likelihood of any complaint by sharing a physical copy only, not a pdf or other electronic version, with instructions to not pass it on,
sharing an older version rather than the one formatted for publication. The version you originally submitted would likely be "ok". Caveat: User Greg Martin points out, correctly, in a comment that sharing older versions need to contain correct results and will, in any case, complicate citations. But note that some publishers are sensitive about final, formatted, versions.
Note that, while it is, in some cases, a violation, it will likely be ignored. It might not be ignored if done by someone else, but author relations are considered.
Don't consider the above to be legal advice, but just a description of how the world works in practice. One of the main reasons for copyright is to protect financial interests. But they are so small here that "the law does not concern itself with trifles" is likely to apply.