you may get a corrected 1099. i've gotten 1 in November a month after the filing deadline.
since your talking about $4 list it the way 1099 shows or file an extension and wait to see if you get a corrected 1099. we have no way of determining the correct reporting. it's the fund that sends the info to the broker to report so maybe contact the fund. but agin your taliking about just $4.