From Sue's response to a similar question in 2009 I found the following

Upon reviewing this 990 form: It says May 9th 2016 on the bottom which I assume is the date of filing. https://upload.wikimedia.org/wikipedia/foundation/2/27/Form_990_FY_2014-201… Publication was the 18th of May https://wikimediafoundation.org/w/index.php?title=Financial_reports&typ… This form was for the period ending June 30, 2015. Now the IRS states on page 5 of this document that these forms are to be filled by the 15th day of the 5th months after that date which would be Nov 15th, 2015. https://www.irs.gov/pub/irs-pdf/i990.pdf Why was this form published 6 months late? Did we pay the $18,000 late fee or were multiple 3 month extensions applied for? Do we expect next year's 990 to be published by the deadline? Best -- James Heilman MD, CCFP-EM, Wikipedian The Wikipedia Open Textbook of Medicine www.opentextbookofmedicine.com _______________________________________________ Wikimedia-l mailing list, guidelines at: https://meta.wikimedia.org/wiki/Mailing_lists/Guidelines New messages to: Wikimedia-l(a)lists.wikimedia.org Unsubscribe: https://lists.wikimedia.org/mailman/listinfo/wikimedia-l, <mailto:wikimedia-l-request@lists.wikimedia.org?subject=unsubscribe>