{"ein":"770487136","name":"Leeson Foundation","city":"LOS GATOS","state":"CA","ntee_code":"T20","subsection_code":"03","form_type":"990PF","totals":{"paid_usd":9400,"paid_count":23,"recipient_count":11,"approved_future_usd":3100,"approved_future_count":6,"first_tax_year":2018,"last_tax_year":2025,"grant_rows":29},"years":[{"tax_year":2018,"amount_type":"approved_future","usd":2000,"count":4},{"tax_year":2020,"amount_type":"approved_future","usd":750,"count":1},{"tax_year":2020,"amount_type":"paid","usd":1250,"count":3},{"tax_year":2021,"amount_type":"approved_future","usd":350,"count":1},{"tax_year":2021,"amount_type":"paid","usd":1250,"count":3},{"tax_year":2022,"amount_type":"paid","usd":1850,"count":4},{"tax_year":2023,"amount_type":"paid","usd":1450,"count":5},{"tax_year":2024,"amount_type":"paid","usd":3500,"count":7},{"tax_year":2025,"amount_type":"paid","usd":100,"count":1}],"top_recipients":[{"name":"University of Michigan","ein":null,"tier":"U","confidence":null,"city":"Ann Arbor","state":"MI","paid_usd":2700,"count":5,"last_tax_year":2024},{"name":"Massachusetts Institute of Technolo","ein":"042103594","tier":"C","confidence":0.88,"city":"Cambridge","state":"MA","paid_usd":2100,"count":4,"last_tax_year":2023},{"name":"Wayne State University","ein":null,"tier":"U","confidence":null,"city":"Detroit","state":"MI","paid_usd":1050,"count":4,"last_tax_year":2023},{"name":"Symphony San Jose ArtSpark","ein":"320083030","tier":"D","confidence":0.54,"city":"San Jose","state":"CA","paid_usd":1000,"count":1,"last_tax_year":2024},{"name":"MIT","ein":null,"tier":"U","confidence":null,"city":"Cambridge","state":"MA","paid_usd":600,"count":1,"last_tax_year":2024},{"name":"Caltech","ein":"951684790","tier":"C","confidence":0.83,"city":"Pasadena","state":"CA","paid_usd":600,"count":1,"last_tax_year":2024},{"name":"Henry Ford Health","ein":null,"tier":"U","confidence":null,"city":"Detroit","state":"MI","paid_usd":500,"count":1,"last_tax_year":2024},{"name":"Radio Club of America","ein":null,"tier":"U","confidence":null,"city":"Minneapolis","state":"MN","paid_usd":350,"count":1,"last_tax_year":2022},{"name":"Stanford Historical Society","ein":null,"tier":"U","confidence":null,"city":"Stanford","state":"CA","paid_usd":200,"count":2,"last_tax_year":2024},{"name":"Stanford Cancer Discovery Fund","ein":null,"tier":"U","confidence":null,"city":"Stanford","state":"CA","paid_usd":200,"count":2,"last_tax_year":2024},{"name":"STANFORD HIST SOC","ein":"392201956","tier":"D","confidence":0.51,"city":"STANFORD","state":"CA","paid_usd":100,"count":1,"last_tax_year":2025}],"recent_grants":[{"grant_id":"dc1c26e78b6377e92b0fdec3b4e8d752","tax_year":2025,"amount_type":"paid","amount_usd":100,"noncash_amount_usd":null,"recipient_name":"STANFORD HIST SOC","recipient_ein":"392201956","match_tier":"D","match_confidence":0.51,"match_method":"name_jw_state","purpose":"EDU","city":"STANFORD","state":"CA","recipient_type":"organization","object_id":"202601349349104740"},{"grant_id":"a4b094ded7cd8b0b0f4a2ef83500821d","tax_year":2024,"amount_type":"paid","amount_usd":1000,"noncash_amount_usd":null,"recipient_name":"Symphony San Jose ArtSpark","recipient_ein":"320083030","match_tier":"D","match_confidence":0.54,"match_method":"name_jw_state","purpose":"Education","city":"San Jose","state":"CA","recipient_type":"organization","object_id":"202521289349103137"},{"grant_id":"abfccc6e68ef82dda39328b24bb524a8","tax_year":2024,"amount_type":"paid","amount_usd":600,"noncash_amount_usd":null,"recipient_name":"University of Michigan","recipient_ein":null,"match_tier":"U","match_confidence":null,"match_method":"ambiguous_8_candidates","purpose":"Education","city":"Ann Arbor","state":"MI","recipient_type":"organization","object_id":"202521289349103137"},{"grant_id":"ce5dc621fc20e2714d11981752d80bfc","tax_year":2024,"amount_type":"paid","amount_usd":600,"noncash_amount_usd":null,"recipient_name":"MIT","recipient_ein":null,"match_tier":"U","match_confidence":null,"match_method":"no_candidate_above_threshold","purpose":"Education","city":"Cambridge","state":"MA","recipient_type":"organization","object_id":"202521289349103137"},{"grant_id":"d0f20091cfa1e7f660baa388bb52e0b8","tax_year":2024,"amount_type":"paid","amount_usd":600,"noncash_amount_usd":null,"recipient_name":"Caltech","recipient_ein":"951684790","match_tier":"C","match_confidence":0.83,"match_method":"name_jw_zip5","purpose":"Education","city":"Pasadena","state":"CA","recipient_type":"organization","object_id":"202521289349103137"},{"grant_id":"7091284dc80fa407f1e6d9f9f851b4d3","tax_year":2024,"amount_type":"paid","amount_usd":500,"noncash_amount_usd":null,"recipient_name":"Henry Ford Health","recipient_ein":null,"match_tier":"U","match_confidence":null,"match_method":"ambiguous_10_candidates","purpose":"Education","city":"Detroit","state":"MI","recipient_type":"organization","object_id":"202521289349103137"},{"grant_id":"b57f54c93a4c8fb80c56c4ce56780cfc","tax_year":2024,"amount_type":"paid","amount_usd":100,"noncash_amount_usd":null,"recipient_name":"Stanford Historical Society","recipient_ein":null,"match_tier":"U","match_confidence":null,"match_method":"no_candidate_above_threshold","purpose":"Education","city":"Stanford","state":"CA","recipient_type":"organization","object_id":"202521289349103137"},{"grant_id":"c0b0791db3a0e7f176f430fc03a87e45","tax_year":2024,"amount_type":"paid","amount_usd":100,"noncash_amount_usd":null,"recipient_name":"Stanford Cancer Discovery Fund","recipient_ein":null,"match_tier":"U","match_confidence":null,"match_method":"no_candidates","purpose":"Education","city":"Stanford","state":"CA","recipient_type":"organization","object_id":"202521289349103137"},{"grant_id":"1337046c0878302c95faebf761de287b","tax_year":2023,"amount_type":"paid","amount_usd":500,"noncash_amount_usd":null,"recipient_name":"University of Michigan","recipient_ein":null,"match_tier":"U","match_confidence":null,"match_method":"ambiguous_8_candidates","purpose":"Education","city":"Ann Arbor","state":"MI","recipient_type":"organization","object_id":"202431309349103708"},{"grant_id":"1cc70be26a74b28da6c81686a635b6d6","tax_year":2023,"amount_type":"paid","amount_usd":500,"noncash_amount_usd":null,"recipient_name":"Massachusetts Institute of Technolo","recipient_ein":"042103594","match_tier":"C","match_confidence":0.88,"match_method":"name_jw_zip5","purpose":"Education","city":"Cambridge","state":"MA","recipient_type":"organization","object_id":"202431309349103708"},{"grant_id":"dec689939089df956605cfb1d7d38687","tax_year":2023,"amount_type":"paid","amount_usd":250,"noncash_amount_usd":null,"recipient_name":"Wayne State University","recipient_ein":null,"match_tier":"U","match_confidence":null,"match_method":"ambiguous_6_candidates","purpose":"Education","city":"Detroit","state":"MI","recipient_type":"organization","object_id":"202431309349103708"},{"grant_id":"ac32aa64485ae433f4701b3365eae502","tax_year":2023,"amount_type":"paid","amount_usd":100,"noncash_amount_usd":null,"recipient_name":"Stanford Historical Society","recipient_ein":null,"match_tier":"U","match_confidence":null,"match_method":"no_candidate_above_threshold","purpose":"Education","city":"Stanford","state":"CA","recipient_type":"organization","object_id":"202431309349103708"},{"grant_id":"c5e670d36e12fbdc1d81fd6eb2b6ccce","tax_year":2023,"amount_type":"paid","amount_usd":100,"noncash_amount_usd":null,"recipient_name":"Stanford Cancer Discovery Fund","recipient_ein":null,"match_tier":"U","match_confidence":null,"match_method":"no_candidates","purpose":"Educational","city":"Stanford","state":"CA","recipient_type":"organization","object_id":"202431309349103708"},{"grant_id":"325a06a185e0002a88122fc18ce2d5c2","tax_year":2022,"amount_type":"paid","amount_usd":600,"noncash_amount_usd":null,"recipient_name":"University of Michigan","recipient_ein":null,"match_tier":"U","match_confidence":null,"match_method":"ambiguous_8_candidates","purpose":"Education","city":"Ann Arbor","state":"MI","recipient_type":"organization","object_id":"202341329349103549"},{"grant_id":"f45f2d575a0eaf33a3453bea5100d930","tax_year":2022,"amount_type":"paid","amount_usd":600,"noncash_amount_usd":null,"recipient_name":"Massachusetts Institute of Technolo","recipient_ein":"042103594","match_tier":"C","match_confidence":0.88,"match_method":"name_jw_zip5","purpose":"Education","city":"Cambridge","state":"MA","recipient_type":"organization","object_id":"202341329349103549"},{"grant_id":"df5f08d1d262a342795ab3b98ed2faa1","tax_year":2022,"amount_type":"paid","amount_usd":350,"noncash_amount_usd":null,"recipient_name":"Radio Club of America","recipient_ein":null,"match_tier":"U","match_confidence":null,"match_method":"no_candidate_above_threshold","purpose":"K-12 Education","city":"Minneapolis","state":"MN","recipient_type":"organization","object_id":"202341329349103549"},{"grant_id":"79a3d6ae3a894a7dda1a371d91ffff04","tax_year":2022,"amount_type":"paid","amount_usd":300,"noncash_amount_usd":null,"recipient_name":"Wayne State University","recipient_ein":null,"match_tier":"U","match_confidence":null,"match_method":"ambiguous_6_candidates","purpose":"Education","city":"Detroit","state":"MI","recipient_type":"organization","object_id":"202341329349103549"},{"grant_id":"1de49c31ff8dd569ec45171d81239fa5","tax_year":2021,"amount_type":"paid","amount_usd":500,"noncash_amount_usd":null,"recipient_name":"University of Michigan","recipient_ein":null,"match_tier":"U","match_confidence":null,"match_method":"ambiguous_8_candidates","purpose":"Education","city":"Ann Arbor","state":"MI","recipient_type":"organization","object_id":"202231309349103548"},{"grant_id":"aacfe23ae0cee0d728bdc7acb8b79141","tax_year":2021,"amount_type":"paid","amount_usd":500,"noncash_amount_usd":null,"recipient_name":"Massachusetts Institute of Technolo","recipient_ein":"042103594","match_tier":"C","match_confidence":0.88,"match_method":"name_jw_zip5","purpose":"Education","city":"Cambridge","state":"MA","recipient_type":"organization","object_id":"202231309349103548"},{"grant_id":"633eee3b36c4177eb1c7a981e2718372","tax_year":2021,"amount_type":"approved_future","amount_usd":350,"noncash_amount_usd":null,"recipient_name":"Radio Club of America","recipient_ein":null,"match_tier":"U","match_confidence":null,"match_method":"no_candidate_above_threshold","purpose":"K-12 Education","city":"Minneapolis","state":"MN","recipient_type":"organization","object_id":"202231309349103548"},{"grant_id":"901dd9e772c47e156de58bb9eb1412da","tax_year":2021,"amount_type":"paid","amount_usd":250,"noncash_amount_usd":null,"recipient_name":"Wayne State University","recipient_ein":null,"match_tier":"U","match_confidence":null,"match_method":"ambiguous_6_candidates","purpose":"Education","city":"Detroit","state":"MI","recipient_type":"organization","object_id":"202231309349103548"},{"grant_id":"67c267732f10bd239b93c8ee627d6304","tax_year":2020,"amount_type":"approved_future","amount_usd":750,"noncash_amount_usd":null,"recipient_name":"Radio Club of America","recipient_ein":null,"match_tier":"U","match_confidence":null,"match_method":"no_candidate_above_threshold","purpose":"K-12 Education","city":"Minneapolis","state":"MN","recipient_type":"organization","object_id":"202121309349101317"},{"grant_id":"82c15e13f05568cfed869b4676d8f920","tax_year":2020,"amount_type":"paid","amount_usd":500,"noncash_amount_usd":null,"recipient_name":"Massachusetts Institute of Technolo","recipient_ein":"042103594","match_tier":"C","match_confidence":0.88,"match_method":"name_jw_zip5","purpose":"Education","city":"Cambridge","state":"MA","recipient_type":"organization","object_id":"202121309349101317"},{"grant_id":"f810cefbc5e8cca7d64f5698059c5409","tax_year":2020,"amount_type":"paid","amount_usd":500,"noncash_amount_usd":null,"recipient_name":"University of Michigan","recipient_ein":null,"match_tier":"U","match_confidence":null,"match_method":"ambiguous_8_candidates","purpose":"Education","city":"Ann Arbor","state":"MI","recipient_type":"organization","object_id":"202121309349101317"},{"grant_id":"1ef4781633a68c172b3e7e8e8bec382d","tax_year":2020,"amount_type":"paid","amount_usd":250,"noncash_amount_usd":null,"recipient_name":"Wayne State University","recipient_ein":null,"match_tier":"U","match_confidence":null,"match_method":"ambiguous_6_candidates","purpose":"Education","city":"Detroit","state":"MI","recipient_type":"organization","object_id":"202121309349101317"},{"grant_id":"df0f31513ce7ffaca923212f83129f2b","tax_year":2018,"amount_type":"approved_future","amount_usd":750,"noncash_amount_usd":null,"recipient_name":"Radio Club of America","recipient_ein":null,"match_tier":"U","match_confidence":null,"match_method":"no_candidate_above_threshold","purpose":"K-12 educ","city":"Minneapolis","state":"MN","recipient_type":"organization","object_id":"201931309349102683"},{"grant_id":"3496a43749fac5b8bc86851798aa4a94","tax_year":2018,"amount_type":"approved_future","amount_usd":500,"noncash_amount_usd":null,"recipient_name":"University of Michigan","recipient_ein":null,"match_tier":"U","match_confidence":null,"match_method":"ambiguous_8_candidates","purpose":"Educ","city":"Ann Arbor","state":"MI","recipient_type":"organization","object_id":"201931309349102683"},{"grant_id":"cb10414387ec97a9e03b8d9775ef798f","tax_year":2018,"amount_type":"approved_future","amount_usd":500,"noncash_amount_usd":null,"recipient_name":"Massachusetts Institute of Technolo","recipient_ein":"042103594","match_tier":"C","match_confidence":0.88,"match_method":"name_jw_zip5","purpose":"Educ","city":"Cambridge","state":"MA","recipient_type":"organization","object_id":"201931309349102683"},{"grant_id":"b49b0505f984b4b061ce98b940f5dae0","tax_year":2018,"amount_type":"approved_future","amount_usd":250,"noncash_amount_usd":null,"recipient_name":"Wayne State University","recipient_ein":null,"match_tier":"U","match_confidence":null,"match_method":"ambiguous_6_candidates","purpose":"Education","city":"Detroit","state":"MI","recipient_type":"organization","object_id":"201931309349102683"}],"filings":[{"object_id":"202601349349104740","tax_period_end":"2025-12-31","filing_submission_date":null,"return_version":"2025v4.1","filing_year":2026,"tax_year":2025,"form_type":"990PF"},{"object_id":"202521289349103137","tax_period_end":"2024-12-31","filing_submission_date":null,"return_version":"2024v5.1","filing_year":2025,"tax_year":2024,"form_type":"990PF"},{"object_id":"202431309349103708","tax_period_end":"2023-12-31","filing_submission_date":null,"return_version":"2023v5.0","filing_year":2024,"tax_year":2023,"form_type":"990PF"},{"object_id":"202341329349103549","tax_period_end":"2022-12-31","filing_submission_date":null,"return_version":"2022v5.0","filing_year":2023,"tax_year":2022,"form_type":"990PF"},{"object_id":"202231309349103548","tax_period_end":"2021-12-31","filing_submission_date":null,"return_version":"2021v4.0","filing_year":2022,"tax_year":2021,"form_type":"990PF"},{"object_id":"202121309349101317","tax_period_end":"2020-12-31","filing_submission_date":null,"return_version":"2020v4.0","filing_year":2021,"tax_year":2020,"form_type":"990PF"},{"object_id":"201931309349102683","tax_period_end":"2018-12-31","filing_submission_date":null,"return_version":"2018v3.1","filing_year":2019,"tax_year":2018,"form_type":"990PF"}],"chunked":false,"dataset_version":"2026.09.0","built_at":"2026-09-03T21:13:09+00:00"}