How do you get the data? I wasn't able to find the forms for 2018 for some chari...

schwanksta · on June 9, 2019

The IRS puts them on an s3 bucket: https://docs.opendata.aws/irs-990/readme.html

There are 2018 filings in there, but many charities have fiscal years that end in Dec. IIRC, they generally file within 6 months. Given things like human error, bureaucracy and filing extensions... more should start rolling in over time.