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The shares vest on the earlier of the one year anniversary of the date of grant and immediately prior to the 2018 annual meeting of stockholders."}],"balance_after":22419,"source":{"system":"sec-edgar","filing":"0001123292-17-000961","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1417687/000112329217000961/edgar.xml","form_type":"4"}},{"id":4322533,"issuer":{"id":5082,"kind":"organization","name":"AMERICAN PUBLIC EDUCATION INC"},"owners":[{"id":93042,"kind":"person","name":"Halle Jean C.","position":1,"cik":"0001417687","reported_name":"Halle Jean C.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $.01","published_at":"2017-05-12T16:58:07.000Z","date":"2017-05-10","kind":"sale","acquired":false,"shares":500,"price":25,"value":12500.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to Rule 10b5-1 trading plans adopted by the reporting person."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"The amount of securities beneficially owned following the reported transaction has been adjusted to correct for a previous clerical error."}],"balance_after":19314,"source":{"system":"sec-edgar","filing":"0001123292-17-000917","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1417687/000112329217000917/edgar.xml","form_type":"4"}},{"id":4322532,"issuer":{"id":5082,"kind":"organization","name":"AMERICAN PUBLIC EDUCATION INC"},"owners":[{"id":93042,"kind":"person","name":"Halle Jean C.","position":1,"cik":"0001417687","reported_name":"Halle Jean C.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $.01","published_at":"2017-05-12T16:58:07.000Z","date":"2016-03-07","kind":"sale","acquired":false,"shares":950,"price":21.56,"value":20482.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to Rule 10b5-1 trading plans adopted by the reporting person."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Amount reflects the beneficial ownership of the reporting person following the reported transaction as of March 7, 2016."}],"balance_after":20968,"source":{"system":"sec-edgar","filing":"0001123292-17-000917","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1417687/000112329217000917/edgar.xml","form_type":"4"}}]}