Joyce, I don't see the connection between a bankruptcy disclosure action 2019 rule, and the SEC's requirement to disclose holdings. There are some exceptions with the 13F filing but only for as long as you are accumulating shares, and then it is only very temporary.
Perhaps others have not mentioned because it is a poor attempt to to show one has something to do with the other. Rule 2019 has more to do with a group of creditors binding together to affect the outcome a bankruptcy action.