SPDR explains how to calculate the gain in the following PDF (there are examples).
https://www.spdrgoldshares.com/media/GLD/file/SPDR-Gold-Trust-Tax-Information-2023.pdf
This post explains the work required:
https://www.city-data.com/forum/investing/3343489-joys-gld-income-tax-reporting-spdr.html#google_vig...
It does seem like a lot of work for someone with a tiny amount of gain, and they should have just provided a calculator for folks.
