{"transactions":[{"id":2360663,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2022-03-02T16:53:45.000Z","date":"2022-03-02","kind":"exercise","acquired":false,"shares":3020,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1512,"derivative":{"exercise_price":20.26,"exercise_date":"2021-12-11","expiration_date":"2029-12-11","underlying":"Common Stock","underlying_shares":3020},"source":{"system":"sec-edgar","filing":"0001589526-22-000023","document":"wf-form4_164625798005816.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952622000023/wf-form4_164625798005816.xml","form_type":"4"}},{"id":2360662,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2022-03-02T16:53:45.000Z","date":"2022-03-02","kind":"exercise","acquired":false,"shares":756,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":20.26,"exercise_date":"2020-12-11","expiration_date":"2029-12-11","underlying":"Common Stock","underlying_shares":756},"source":{"system":"sec-edgar","filing":"0001589526-22-000023","document":"wf-form4_164625798005816.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952622000023/wf-form4_164625798005816.xml","form_type":"4"}},{"id":2360661,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2022-03-02T16:53:45.000Z","date":"2022-03-01","kind":"exercise","acquired":false,"shares":1887,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":16.2,"exercise_date":"2021-12-11","expiration_date":"2030-12-10","underlying":"Common Stock","underlying_shares":1887},"source":{"system":"sec-edgar","filing":"0001589526-22-000023","document":"wf-form4_164625798005816.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952622000023/wf-form4_164625798005816.xml","form_type":"4"}},{"id":2360660,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2022-03-02T16:53:45.000Z","date":"2022-03-02","kind":"sale","acquired":false,"shares":3720,"price":20.75,"value":77190.0,"ownership":{"direct":true},"balance_after":30420,"source":{"system":"sec-edgar","filing":"0001589526-22-000023","document":"wf-form4_164625798005816.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952622000023/wf-form4_164625798005816.xml","form_type":"4"}},{"id":2360659,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2022-03-02T16:53:45.000Z","date":"2022-03-02","kind":"exercise","acquired":true,"shares":3776,"price":20.26,"value":76501.76,"ownership":{"direct":true},"balance_after":34140,"source":{"system":"sec-edgar","filing":"0001589526-22-000023","document":"wf-form4_164625798005816.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952622000023/wf-form4_164625798005816.xml","form_type":"4"}},{"id":2360658,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2022-03-02T16:53:45.000Z","date":"2022-03-01","kind":"sale","acquired":false,"shares":1525,"price":21.25,"value":32406.25,"ownership":{"direct":true},"balance_after":30364,"source":{"system":"sec-edgar","filing":"0001589526-22-000023","document":"wf-form4_164625798005816.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952622000023/wf-form4_164625798005816.xml","form_type":"4"}},{"id":2360657,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2022-03-02T16:53:45.000Z","date":"2022-03-01","kind":"exercise","acquired":true,"shares":1887,"price":16.2,"value":30569.4,"ownership":{"direct":true},"balance_after":31889,"source":{"system":"sec-edgar","filing":"0001589526-22-000023","document":"wf-form4_164625798005816.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952622000023/wf-form4_164625798005816.xml","form_type":"4"}},{"id":2473479,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock","published_at":"2021-12-14T14:18:15.000Z","date":"2021-12-11","kind":"grant","acquired":true,"shares":5150,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Award represents one option grant which vests over a three year period in equal installments (12/11/2022, 12/11/2023, 12/11/2024)."}],"balance_after":5150,"derivative":{"exercise_price":20,"expiration_date":"2031-12-11","underlying":"Common Stock","underlying_shares":5150},"source":{"system":"sec-edgar","filing":"0001589526-21-000121","document":"wf-form4_163950948305156.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952621000121/wf-form4_163950948305156.xml","form_type":"4"}},{"id":2473478,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2021-12-14T14:18:15.000Z","date":"2021-12-11","kind":"grant","acquired":true,"shares":13390,"price":20,"value":267800.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The award represents a grant of restricted stock units (\"RSUs\"). Each RSU represents a contingent right to receive one share of the common stock of Blue Bird Corporation."},{"field":"shares","element":"transactionShares","label":"F3","text":"The RSUs vest in four equal installments (7/1/2022, 7/1/2023, 7/1/2024, 7/1/2025)."}],"balance_after":30002,"source":{"system":"sec-edgar","filing":"0001589526-21-000121","document":"wf-form4_163950948305156.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952621000121/wf-form4_163950948305156.xml","form_type":"4"}},{"id":2473477,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2021-12-14T14:18:15.000Z","date":"2021-12-11","kind":"grant","acquired":true,"shares":3348,"price":20,"value":66960.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The award represents a grant of restricted stock units (\"RSUs\"). Each RSU represents a contingent right to receive one share of the common stock of Blue Bird Corporation."},{"field":"shares","element":"transactionShares","label":"F2","text":"The RSU's vest 1/3 on each of the dates December 11, 2022, December 11, 2023 and December 11, 2024 subject to downward adjustments consistent with each respective fiscal year's actual percentage payout of the Management Performance bonus award. Any downward adjustments shall not reduce the number of RSU's that vest below 50% of the amount(s) granted."}],"balance_after":16612,"source":{"system":"sec-edgar","filing":"0001589526-21-000121","document":"wf-form4_163950948305156.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952621000121/wf-form4_163950948305156.xml","form_type":"4"}},{"id":2473476,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2021-12-14T14:18:15.000Z","date":"2021-12-11","kind":"tax_withholding","acquired":false,"shares":286,"price":16.2,"value":4633.2,"ownership":{"direct":true},"balance_after":13264,"source":{"system":"sec-edgar","filing":"0001589526-21-000121","document":"wf-form4_163950948305156.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952621000121/wf-form4_163950948305156.xml","form_type":"4"}},{"id":2473475,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2021-12-14T14:18:15.000Z","date":"2021-12-11","kind":"tax_withholding","acquired":false,"shares":214,"price":20.26,"value":4335.64,"ownership":{"direct":true},"balance_after":13550,"source":{"system":"sec-edgar","filing":"0001589526-21-000121","document":"wf-form4_163950948305156.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952621000121/wf-form4_163950948305156.xml","form_type":"4"}},{"id":2473474,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2021-12-14T14:18:15.000Z","date":"2021-12-11","kind":"disposition_to_issuer","acquired":false,"shares":1171,"price":16.99,"value":19895.29,"ownership":{"direct":true},"balance_after":13764,"source":{"system":"sec-edgar","filing":"0001589526-21-000121","document":"wf-form4_163950948305156.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952621000121/wf-form4_163950948305156.xml","form_type":"4"}},{"id":2473473,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2021-12-14T14:18:15.000Z","date":"2021-12-11","kind":"disposition_to_issuer","acquired":false,"shares":491,"price":20.26,"value":9947.66,"ownership":{"direct":true},"balance_after":14935,"source":{"system":"sec-edgar","filing":"0001589526-21-000121","document":"wf-form4_163950948305156.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952621000121/wf-form4_163950948305156.xml","form_type":"4"}},{"id":2473472,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2021-12-14T14:18:15.000Z","date":"2021-12-11","kind":"disposition_to_issuer","acquired":false,"shares":614,"price":16.2,"value":9946.8,"ownership":{"direct":true},"balance_after":15426,"source":{"system":"sec-edgar","filing":"0001589526-21-000121","document":"wf-form4_163950948305156.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952621000121/wf-form4_163950948305156.xml","form_type":"4"}},{"id":2708107,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2021-05-18T18:00:30.000Z","date":"2021-05-17","kind":"sale","acquired":false,"shares":2500,"price":27.4,"value":68500.0,"ownership":{"direct":true},"balance_after":16040,"source":{"system":"sec-edgar","filing":"0001589526-21-000044","document":"wf-form4_162137520701560.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952621000044/wf-form4_162137520701560.xml","form_type":"4"}},{"id":2799924,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2021-03-09T17:04:45.000Z","date":"2021-03-08","kind":"exercise","acquired":false,"shares":2537,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":18.1,"exercise_date":"2020-12-11","expiration_date":"2027-12-10","underlying":"Common Stock","underlying_shares":2537},"source":{"system":"sec-edgar","filing":"0001589526-21-000011","document":"wf-form4_161532744574007.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952621000011/wf-form4_161532744574007.xml","form_type":"4"}},{"id":2799923,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2021-03-09T17:04:45.000Z","date":"2021-03-08","kind":"exercise","acquired":false,"shares":2703,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":16.99,"exercise_date":"2020-12-11","expiration_date":"2028-12-10","underlying":"Common Stock","underlying_shares":2703},"source":{"system":"sec-edgar","filing":"0001589526-21-000011","document":"wf-form4_161532744574007.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952621000011/wf-form4_161532744574007.xml","form_type":"4"}},{"id":2799922,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2021-03-09T17:04:45.000Z","date":"2021-03-08","kind":"sale","acquired":false,"shares":4053,"price":27.03,"value":109552.59,"ownership":{"direct":true},"balance_after":18540,"source":{"system":"sec-edgar","filing":"0001589526-21-000011","document":"wf-form4_161532744574007.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952621000011/wf-form4_161532744574007.xml","form_type":"4"}},{"id":2799921,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2021-03-09T17:04:45.000Z","date":"2021-03-08","kind":"exercise","acquired":true,"shares":2537,"price":18.1,"value":45919.7,"ownership":{"direct":true},"balance_after":22593,"source":{"system":"sec-edgar","filing":"0001589526-21-000011","document":"wf-form4_161532744574007.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952621000011/wf-form4_161532744574007.xml","form_type":"4"}},{"id":2799920,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2021-03-09T17:04:45.000Z","date":"2021-03-08","kind":"exercise","acquired":true,"shares":2703,"price":16.99,"value":45923.97,"ownership":{"direct":true},"balance_after":20056,"source":{"system":"sec-edgar","filing":"0001589526-21-000011","document":"wf-form4_161532744574007.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952621000011/wf-form4_161532744574007.xml","form_type":"4"}},{"id":2944479,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2020-12-15T15:52:23.000Z","date":"2020-12-11","kind":"grant","acquired":true,"shares":5667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"Award represents one option grant which vests over a three year period in equal installments (12/11/2021, 12/11/2022, 12/11/2023)."}],"balance_after":5667,"derivative":{"exercise_price":16.2,"expiration_date":"2030-12-10","underlying":"Common Stock","underlying_shares":5667},"source":{"system":"sec-edgar","filing":"0001589526-20-000098","document":"wf-form4_160806552578660.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000098/wf-form4_160806552578660.xml","form_type":"4"}},{"id":2944478,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2020-12-15T15:52:23.000Z","date":"2020-12-11","kind":"grant","acquired":true,"shares":756,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F5","text":"On December 11, 2019, the reporting person was granted an option to purchase shares of common stock, which vests over a three year period in equal installments based on satisfaction of certain performance criteria for each of the applicable fiscal years. Although the performance criteria for fiscal 2020 was not met, the Compensation Committee vested the number of options reported under its discretionary authority."}],"balance_after":756,"derivative":{"exercise_price":20.26,"exercise_date":"2020-12-11","expiration_date":"2029-12-11","underlying":"Common Stock","underlying_shares":756},"source":{"system":"sec-edgar","filing":"0001589526-20-000098","document":"wf-form4_160806552578660.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000098/wf-form4_160806552578660.xml","form_type":"4"}},{"id":2944477,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2020-12-15T15:52:23.000Z","date":"2020-12-11","kind":"grant","acquired":true,"shares":2703,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"On December 11, 2018, the reporting person was granted an option to purchase shares of common stock, which vests over a three year period in equal installments based on satisfaction of certain performance criteria for each of the applicable fiscal years. Although the performance criteria for fiscal 2020 was not met, the Compensation Committee vested the number of options reported under its discretionary authority."}],"balance_after":2703,"derivative":{"exercise_price":16.99,"exercise_date":"2020-12-11","expiration_date":"2028-12-10","underlying":"Common Stock","underlying_shares":2703},"source":{"system":"sec-edgar","filing":"0001589526-20-000098","document":"wf-form4_160806552578660.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000098/wf-form4_160806552578660.xml","form_type":"4"}},{"id":2944476,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2020-12-15T15:52:23.000Z","date":"2020-12-11","kind":"grant","acquired":true,"shares":2537,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"On December 11, 2017, the reporting person was granted an option to purchase shares of common stock, which vests over a three year period in equal installments based on satisfaction of certain performance criteria for each of the applicable fiscal years. Although the performance criteria for fiscal 2020 was not met, the Compensation Committee vested the number of options reported under its discretionary authority."}],"balance_after":2537,"derivative":{"exercise_price":18.1,"exercise_date":"2020-12-11","expiration_date":"2027-12-10","underlying":"Common Stock","underlying_shares":2537},"source":{"system":"sec-edgar","filing":"0001589526-20-000098","document":"wf-form4_160806552578660.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000098/wf-form4_160806552578660.xml","form_type":"4"}},{"id":2944475,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2020-12-15T15:52:23.000Z","date":"2020-12-11","kind":"grant","acquired":true,"shares":3684,"price":16.2,"value":59680.8,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The award represents a grant of restricted stock units (\"RSUs\"). Each RSU represents a contingent right to receive one share of the common stock of Blue Bird Corporation."},{"field":"shares","element":"transactionShares","label":"F2","text":"The RSU's vest 1/3 on each of the dates December 11, 2021, December 11, 2022 and December 11, 2023 subject to downward adjustments consistent with each respective fiscal year's actual percentage payout of the Management Performance bonus award. Any downward adjustments shall not reduce the number of RSU's that vest below 50% of the amount(s) granted."}],"balance_after":17353,"source":{"system":"sec-edgar","filing":"0001589526-20-000098","document":"wf-form4_160806552578660.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000098/wf-form4_160806552578660.xml","form_type":"4"}},{"id":2944474,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2020-12-15T15:52:23.000Z","date":"2020-12-11","kind":"tax_withholding","acquired":false,"shares":1100,"price":16.2,"value":17820.0,"ownership":{"direct":true},"balance_after":13669,"source":{"system":"sec-edgar","filing":"0001589526-20-000098","document":"wf-form4_160806552578660.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000098/wf-form4_160806552578660.xml","form_type":"4"}},{"id":2944473,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2020-12-15T15:52:23.000Z","date":"2020-12-11","kind":"disposition_to_issuer","acquired":false,"shares":246,"price":20.26,"value":4983.96,"ownership":{"direct":true},"balance_after":14769,"source":{"system":"sec-edgar","filing":"0001589526-20-000098","document":"wf-form4_160806552578660.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000098/wf-form4_160806552578660.xml","form_type":"4"}},{"id":2944472,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2020-12-15T15:52:23.000Z","date":"2020-12-11","kind":"disposition_to_issuer","acquired":false,"shares":293,"price":16.99,"value":4978.07,"ownership":{"direct":true},"balance_after":15015,"source":{"system":"sec-edgar","filing":"0001589526-20-000098","document":"wf-form4_160806552578660.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000098/wf-form4_160806552578660.xml","form_type":"4"}},{"id":2944471,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2020-12-15T15:52:23.000Z","date":"2020-12-11","kind":"disposition_to_issuer","acquired":false,"shares":275,"price":18.1,"value":4977.5,"ownership":{"direct":true},"balance_after":15308,"source":{"system":"sec-edgar","filing":"0001589526-20-000098","document":"wf-form4_160806552578660.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000098/wf-form4_160806552578660.xml","form_type":"4"}},{"id":3104317,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2020-06-19T08:29:49.000Z","date":"2020-06-18","kind":"sale","acquired":false,"shares":10000,"price":14.66,"value":146600.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.65 to $14.68. The reporting person undertakes to provide Blue Bird Corporation, any security holder of Blue Bird Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (1) to this Form 4."}],"balance_after":15583,"source":{"system":"sec-edgar","filing":"0001589526-20-000083","document":"wf-form4_159256977120608.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000083/wf-form4_159256977120608.xml","form_type":"4"}},{"id":3124100,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2020-06-03T16:02:33.000Z","date":"2019-12-11","kind":"grant","acquired":true,"shares":4532,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"The reported transaction was inadvertently omitted from the original Form 4 filing."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Award represents one option grant which vests over a three year period in equal installments (12/11/2020, 12/11/2021, 12/11/2022)."}],"balance_after":4532,"derivative":{"exercise_price":20.26,"expiration_date":"2029-12-11","underlying":"Common Stock","underlying_shares":4532},"source":{"system":"sec-edgar","filing":"0001589526-20-000075","document":"wf-form4a_159121453567087.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000075/wf-form4a_159121453567087.xml","form_type":"4/A","original_submission_date":"2019-12-13"}},{"id":3315244,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2020-01-08T17:23:06.000Z","date":"2020-01-06","kind":"exercise","acquired":false,"shares":3603,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":16.99,"exercise_date":"2019-12-11","expiration_date":"2028-12-11","underlying":"Common Stock","underlying_shares":3603},"source":{"system":"sec-edgar","filing":"0001589526-20-000014","document":"wf-form4_157852216918220.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000014/wf-form4_157852216918220.xml","form_type":"4"}},{"id":3315243,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2020-01-08T17:23:06.000Z","date":"2020-01-06","kind":"exercise","acquired":false,"shares":3382,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":18.1,"exercise_date":"2019-12-11","expiration_date":"2027-12-11","underlying":"Common Stock","underlying_shares":3382},"source":{"system":"sec-edgar","filing":"0001589526-20-000014","document":"wf-form4_157852216918220.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000014/wf-form4_157852216918220.xml","form_type":"4"}},{"id":3315242,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2020-01-08T17:23:06.000Z","date":"2020-01-06","kind":"exercise","acquired":false,"shares":2536,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":18.1,"exercise_date":"2018-12-11","expiration_date":"2027-12-11","underlying":"Common Stock","underlying_shares":2536},"source":{"system":"sec-edgar","filing":"0001589526-20-000014","document":"wf-form4_157852216918220.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000014/wf-form4_157852216918220.xml","form_type":"4"}},{"id":3315241,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2020-01-08T17:23:06.000Z","date":"2020-01-06","kind":"exercise","acquired":false,"shares":4739,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":15.5,"exercise_date":"2020-01-03","expiration_date":"2027-01-03","underlying":"Common Stock","underlying_shares":4739},"source":{"system":"sec-edgar","filing":"0001589526-20-000014","document":"wf-form4_157852216918220.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000014/wf-form4_157852216918220.xml","form_type":"4"}},{"id":3315240,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2020-01-08T17:23:06.000Z","date":"2020-01-06","kind":"exercise","acquired":false,"shares":3554,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":15.5,"exercise_date":"2019-01-03","expiration_date":"2027-01-03","underlying":"Common Stock","underlying_shares":3554},"source":{"system":"sec-edgar","filing":"0001589526-20-000014","document":"wf-form4_157852216918220.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000014/wf-form4_157852216918220.xml","form_type":"4"}},{"id":3315239,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2020-01-08T17:23:06.000Z","date":"2020-01-06","kind":"tax_withholding","acquired":false,"shares":15102,"price":23.84,"value":360031.68,"ownership":{"direct":true},"balance_after":25585,"source":{"system":"sec-edgar","filing":"0001589526-20-000014","document":"wf-form4_157852216918220.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000014/wf-form4_157852216918220.xml","form_type":"4"}},{"id":3315238,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2020-01-08T17:23:06.000Z","date":"2020-01-06","kind":"exercise","acquired":true,"shares":3603,"price":16.99,"value":61214.97,"ownership":{"direct":true},"balance_after":40687,"source":{"system":"sec-edgar","filing":"0001589526-20-000014","document":"wf-form4_157852216918220.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000014/wf-form4_157852216918220.xml","form_type":"4"}},{"id":3315237,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2020-01-08T17:23:06.000Z","date":"2020-01-06","kind":"exercise","acquired":true,"shares":5918,"price":18.1,"value":107115.8,"ownership":{"direct":true},"balance_after":37084,"source":{"system":"sec-edgar","filing":"0001589526-20-000014","document":"wf-form4_157852216918220.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000014/wf-form4_157852216918220.xml","form_type":"4"}},{"id":3315236,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2020-01-08T17:23:06.000Z","date":"2020-01-06","kind":"exercise","acquired":true,"shares":8293,"price":15.5,"value":128541.5,"ownership":{"direct":true},"balance_after":31166,"source":{"system":"sec-edgar","filing":"0001589526-20-000014","document":"wf-form4_157852216918220.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000014/wf-form4_157852216918220.xml","form_type":"4"}},{"id":3318491,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2020-01-06T15:25:50.000Z","date":"2020-01-03","kind":"grant","acquired":true,"shares":4739,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On January 3, 2017, the reporting person was granted an option to purchase 14,216 shares of common stock, which vests over a three year period in equal installments based on satisfaction of certain performance criteria for each of the applicable fiscal years. The performance criteria for fiscal 2019 was met, resulting in the vesting of the options in 5.(A)."}],"balance_after":4739,"derivative":{"exercise_price":15.5,"exercise_date":"2020-01-03","expiration_date":"2027-01-03","underlying":"Common Stock","underlying_shares":4739},"source":{"system":"sec-edgar","filing":"0001589526-20-000006","document":"wf-form4_157834233304466.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000006/wf-form4_157834233304466.xml","form_type":"4"}},{"id":3318490,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2020-01-06T15:25:50.000Z","date":"2020-01-03","kind":"tax_withholding","acquired":false,"shares":781,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":22873,"source":{"system":"sec-edgar","filing":"0001589526-20-000006","document":"wf-form4_157834233304466.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952620000006/wf-form4_157834233304466.xml","form_type":"4"}},{"id":3342289,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2019-12-13T16:43:19.000Z","date":"2019-12-11","kind":"grant","acquired":true,"shares":3382,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"On December 11, 2017, the reporting person was granted an option to purchase 10,145 shares of common stock, which vests over a three year period in equal installments based on satisfaction of certain performance criteria for each of the applicable fiscal years. This represents vesting of the second tranche at 100%."}],"balance_after":3382,"derivative":{"exercise_price":18.1,"exercise_date":"2019-12-11","expiration_date":"2027-12-11","underlying":"Common Stock","underlying_shares":3382},"source":{"system":"sec-edgar","filing":"0001589526-19-000060","document":"wf-form4_157627338216386.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952619000060/wf-form4_157627338216386.xml","form_type":"4"}},{"id":3342288,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2019-12-13T16:43:19.000Z","date":"2019-12-11","kind":"grant","acquired":true,"shares":3603,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"On December 11, 2018, the reporting person was granted an option to purchase 10,808 shares of common stock, which vests over a three year period in equal installments based on satisfaction of certain performance criteria for each of the applicable fiscal years. This represents vesting of the first tranche at 100%."}],"balance_after":3603,"derivative":{"exercise_price":16.99,"exercise_date":"2019-12-11","expiration_date":"2028-12-11","underlying":"Common Stock","underlying_shares":3603},"source":{"system":"sec-edgar","filing":"0001589526-19-000060","document":"wf-form4_157627338216386.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952619000060/wf-form4_157627338216386.xml","form_type":"4"}},{"id":3342287,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2019-12-13T16:43:19.000Z","date":"2019-12-11","kind":"grant","acquired":true,"shares":2945,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The award represents a grant of restricted stock units (\"RSUs\"). Each RSU represents a contingent right to receive one share of the common stock of Blue Bird Corporation."},{"field":"shares","element":"transactionShares","label":"F2","text":"The RSU's vest 1/3 on each of the dates December 11, 2020, December 11, 2021 and December 11, 2022 subject to downward adjustments consistent with each respective fiscal year's actual percentage payout of the Management Performance bonus award. Any downward adjustments shall not reduce the number of RSU's that vest below 50% of the amount(s) granted."}],"balance_after":23654,"source":{"system":"sec-edgar","filing":"0001589526-19-000060","document":"wf-form4_157627338216386.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952619000060/wf-form4_157627338216386.xml","form_type":"4"}},{"id":3342286,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2019-12-13T16:43:19.000Z","date":"2019-12-11","kind":"tax_withholding","acquired":false,"shares":866,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":20709,"source":{"system":"sec-edgar","filing":"0001589526-19-000060","document":"wf-form4_157627338216386.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952619000060/wf-form4_157627338216386.xml","form_type":"4"}},{"id":3704096,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2019-01-04T13:21:56.000Z","date":"2019-01-03","kind":"grant","acquired":true,"shares":3554,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On January 3, 2017, the reporting person was granted an option to purchase 14,216 shares of common stock, which vests over a three year period in equal installments based on satisfaction of certain performance criteria for each of the applicable fiscal years. The performance criteria for fiscal 2018 was partially met, resulting in the vesting of the options in 5. (A)."}],"balance_after":3554,"derivative":{"exercise_price":15.5,"exercise_date":"2019-01-03","expiration_date":"2027-01-03","underlying":"Common Stock","underlying_shares":3554},"source":{"system":"sec-edgar","filing":"0001589526-19-000006","document":"wf-form4_154662609424226.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952619000006/wf-form4_154662609424226.xml","form_type":"4"}},{"id":3704095,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2019-01-04T13:21:56.000Z","date":"2019-01-03","kind":"tax_withholding","acquired":false,"shares":413,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":21575,"source":{"system":"sec-edgar","filing":"0001589526-19-000006","document":"wf-form4_154662609424226.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952619000006/wf-form4_154662609424226.xml","form_type":"4"}},{"id":3704094,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2019-01-04T13:21:56.000Z","date":"2019-01-03","kind":"disposition_to_issuer","acquired":false,"shares":385,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":21988,"source":{"system":"sec-edgar","filing":"0001589526-19-000006","document":"wf-form4_154662609424226.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952619000006/wf-form4_154662609424226.xml","form_type":"4"}},{"id":3732181,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2018-12-13T09:26:48.000Z","date":"2018-12-11","kind":"grant","acquired":true,"shares":2536,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"On December 11, 2017, the reporting person was granted an option to purchase 10,145 shares of common stock, which vests over a three year period in equal installments based on satisfaction of certain performance criteria for each of the applicable fiscal years. The performance criteria for fiscal 2018 was partially met, resulting in the vesting of the options in 5. (A)."}],"balance_after":2536,"derivative":{"exercise_price":18.1,"exercise_date":"2018-12-11","expiration_date":"2027-12-11","underlying":"Common Stock","underlying_shares":2536},"source":{"system":"sec-edgar","filing":"0001589526-18-000104","document":"wf-form4_154471119089513.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952618000104/wf-form4_154471119089513.xml","form_type":"4"}},{"id":3732180,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2018-12-13T09:26:48.000Z","date":"2018-12-11","kind":"grant","acquired":true,"shares":3512,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The award represents a grant of restricted stock units (\"RSUs\"). Each RSU represents a contingent right to receive one share of the common stock, par value $0.0001 (the \"Common Stock\"), of Blue Bird Corporation (the \"Company\")."},{"field":"shares","element":"transactionShares","label":"F2","text":"The RSU's vest 1/3 on December 11, 2019, 1/3 on December 11, 2020 and 1/3 on December 11, 2021 subject to downward adjustments consistent with each respective fiscal year's actual percentage payout of the Management Performance bonus award."}],"balance_after":22373,"source":{"system":"sec-edgar","filing":"0001589526-18-000104","document":"wf-form4_154471119089513.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952618000104/wf-form4_154471119089513.xml","form_type":"4"}},{"id":3732179,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2018-12-13T09:26:48.000Z","date":"2018-12-11","kind":"tax_withholding","acquired":false,"shares":248,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":18861,"source":{"system":"sec-edgar","filing":"0001589526-18-000104","document":"wf-form4_154471119089513.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952618000104/wf-form4_154471119089513.xml","form_type":"4"}},{"id":3732178,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2018-12-13T09:26:48.000Z","date":"2018-12-11","kind":"disposition_to_issuer","acquired":false,"shares":275,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":19109,"source":{"system":"sec-edgar","filing":"0001589526-18-000104","document":"wf-form4_154471119089513.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952618000104/wf-form4_154471119089513.xml","form_type":"4"}},{"id":3785872,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2018-10-22T17:42:21.000Z","date":"2018-10-19","kind":"disposition_to_issuer","acquired":false,"shares":1143,"price":28,"value":32004.0,"ownership":{"direct":true},"balance_after":19384,"source":{"system":"sec-edgar","filing":"0001589526-18-000084","document":"wf-form4_154024452486619.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952618000084/wf-form4_154024452486619.xml","form_type":"4"}},{"id":3812818,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2018-09-18T17:42:13.000Z","date":"2018-09-14","kind":"exercise","acquired":false,"shares":4137,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":15.5,"exercise_date":"2018-01-03","expiration_date":"2027-01-03","underlying":"Common Stock","underlying_shares":4137},"source":{"system":"sec-edgar","filing":"0001589526-18-000077","document":"wf-form4_153730691741160.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952618000077/wf-form4_153730691741160.xml","form_type":"4"}},{"id":3812817,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2018-09-18T17:42:13.000Z","date":"2018-09-14","kind":"tax_withholding","acquired":false,"shares":3252,"price":25.4,"value":82600.8,"ownership":{"direct":true},"balance_after":20527,"source":{"system":"sec-edgar","filing":"0001589526-18-000077","document":"wf-form4_153730691741160.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952618000077/wf-form4_153730691741160.xml","form_type":"4"}},{"id":3812816,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2018-09-18T17:42:13.000Z","date":"2018-09-14","kind":"exercise","acquired":true,"shares":4137,"price":15.5,"value":64123.5,"ownership":{"direct":true},"balance_after":23779,"source":{"system":"sec-edgar","filing":"0001589526-18-000077","document":"wf-form4_153730691741160.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952618000077/wf-form4_153730691741160.xml","form_type":"4"}},{"id":4105592,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2018-01-05T11:33:10.000Z","date":"2018-01-03","kind":"grant","acquired":true,"shares":4137,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On January 3, 2017, the reporting person was granted an option to purchase 14,216 shares of common stock, which vests over a three year period in equal installments based on satisfaction of certain performance criteria for each of the applicable fiscal years.  The performance criteria for fiscal 2017 was partially met, resulting in the vesting of the option for 4,137 shares."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Reflects an adjustment for previously reported options which had not yet vested or met performance criteria."}],"balance_after":4137,"derivative":{"exercise_price":15.5,"exercise_date":"2018-01-03","expiration_date":"2027-01-03","underlying":"Common Stock","underlying_shares":4137},"source":{"system":"sec-edgar","filing":"0001589526-18-000002","document":"wf-form4_151516997608851.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952618000002/wf-form4_151516997608851.xml","form_type":"4"}},{"id":4105591,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2018-01-05T11:33:10.000Z","date":"2018-01-03","kind":"tax_withholding","acquired":false,"shares":519,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":19642,"source":{"system":"sec-edgar","filing":"0001589526-18-000002","document":"wf-form4_151516997608851.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952618000002/wf-form4_151516997608851.xml","form_type":"4"}},{"id":4105590,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2018-01-05T11:33:10.000Z","date":"2018-01-03","kind":"disposition_to_issuer","acquired":false,"shares":194,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":20161,"source":{"system":"sec-edgar","filing":"0001589526-18-000002","document":"wf-form4_151516997608851.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952618000002/wf-form4_151516997608851.xml","form_type":"4"}},{"id":4134795,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2017-12-12T17:38:26.000Z","date":"2017-12-11","kind":"grant","acquired":true,"shares":3297,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The award represents a grant of restricted stock units (\"RSUs\"). Each RSU represents a contingent right to receive one share of the common stock, par value $0.0001 (the \"Common Stock\"), of Blue Bird Corporation (the \"Company\")."},{"field":"shares","element":"transactionShares","label":"F2","text":"The RSU's vest 33.3% on December 11, 2019, 33.3% on December 11, 2020 and 33.4% on December 11, 2021 subject to downward adjustments consistent with each respective fiscal year's actual percentage payout of the Management Performance bonus award."}],"balance_after":20355,"source":{"system":"sec-edgar","filing":"0001589526-17-000061","document":"wf-form4_151311829213467.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000158952617000061/wf-form4_151311829213467.xml","form_type":"4"}},{"id":4498683,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Legal Affairs, Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2017-01-05T17:04:20.000Z","date":"2017-01-03","kind":"grant","acquired":true,"shares":14216,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The Stock Options vest 33.3% on January 3, 2018, 33.3% on January 3, 2019 and 33.4% on January 3, 2020 subject to downward adjustments consistent with each respective fiscal year's actual percentage payout of the Management Performance bonus award."}],"balance_after":14216,"derivative":{"exercise_price":15.5,"expiration_date":"2027-01-03","underlying":"Common Stock","underlying_shares":14216},"source":{"system":"sec-edgar","filing":"0001632594-17-000002","document":"wf-form4_148365384769594.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000163259417000002/wf-form4_148365384769594.xml","form_type":"4"}},{"id":4498682,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Legal Affairs, Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2017-01-05T17:04:20.000Z","date":"2017-01-03","kind":"grant","acquired":true,"shares":4620,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The award represents a grant of restricted stock units (\"RSUs\"). Each RSU represents a contingent right to receive one share of the common stock, par value $0.0001 (the \"Common Stock\"), of Blue Bird Corporation (the \"Company\")."},{"field":"shares","element":"transactionShares","label":"F2","text":"The RSU's vest 33.3% on January 3, 2018, 33.3% on January 3, 2019 and 33.4% on January 3, 2020 subject to downward adjustments consistent with each respective fiscal year's actual percentage payout of the Management Performance bonus award."}],"balance_after":17058,"source":{"system":"sec-edgar","filing":"0001632594-17-000002","document":"wf-form4_148365384769594.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000163259417000002/wf-form4_148365384769594.xml","form_type":"4"}},{"id":4580178,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Legal Affairs, Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2016-10-13T12:02:16.000Z","date":"2016-09-20","kind":"exercise","acquired":false,"shares":3940,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"This amendment corrects Table II #5 to report the stock options as disposed. The ending amount of derivative securities beneficially owned following the transaction remains the same from the initial filing on 9/23/16."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F2","text":"This amendment corrects Table II #5 to report the stock options as disposed. The ending amount of derivative securities beneficially owned following the transaction remains the same from the initial filing on 9/23/16."}],"balance_after":0,"derivative":{"exercise_price":10.27,"exercise_date":"2016-06-08","expiration_date":"2025-12-19","underlying":"Common Stock","underlying_shares":3940},"source":{"system":"sec-edgar","filing":"0001632594-16-000016","document":"wf-form4a_147637452344416.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000163259416000016/wf-form4a_147637452344416.xml","form_type":"4/A","original_submission_date":"2016-09-23"}},{"id":4580177,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Legal Affairs, Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2016-10-13T12:02:16.000Z","date":"2016-09-20","kind":"exercise","acquired":false,"shares":20000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"This amendment corrects Table II #5 to report the stock options as disposed. The ending amount of derivative securities beneficially owned following the transaction remains the same from the initial filing on 9/23/16."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amendment corrects Table II #5 to report the stock options as disposed. The ending amount of derivative securities beneficially owned following the transaction remains the same from the initial filing on 9/23/16."}],"balance_after":0,"derivative":{"exercise_price":10.05,"exercise_date":"2016-06-08","expiration_date":"2025-03-23","underlying":"Common Stock","underlying_shares":20000},"source":{"system":"sec-edgar","filing":"0001632594-16-000016","document":"wf-form4a_147637452344416.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000163259416000016/wf-form4a_147637452344416.xml","form_type":"4/A","original_submission_date":"2016-09-23"}},{"id":4580176,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Legal Affairs, Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2016-10-13T12:02:16.000Z","date":"2016-09-20","kind":"tax_withholding","acquired":false,"shares":20415,"price":13.53,"value":276214.95,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The ending amount of securities beneficially owned remains the same from the initial filing on 9/23/16."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"The ending amount of securities beneficially owned remains the same from the initial filing on 9/23/16."}],"balance_after":12438,"source":{"system":"sec-edgar","filing":"0001632594-16-000016","document":"wf-form4a_147637452344416.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000163259416000016/wf-form4a_147637452344416.xml","form_type":"4/A","original_submission_date":"2016-09-23"}},{"id":4580175,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Legal Affairs, Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2016-10-13T12:02:16.000Z","date":"2016-09-20","kind":"exercise","acquired":true,"shares":3940,"price":10.27,"value":40463.8,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The ending amount of securities beneficially owned remains the same from the initial filing on 9/23/16."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"The ending amount of securities beneficially owned remains the same from the initial filing on 9/23/16."}],"balance_after":32853,"source":{"system":"sec-edgar","filing":"0001632594-16-000016","document":"wf-form4a_147637452344416.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000163259416000016/wf-form4a_147637452344416.xml","form_type":"4/A","original_submission_date":"2016-09-23"}},{"id":4580174,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Legal Affairs, Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2016-10-13T12:02:16.000Z","date":"2016-09-20","kind":"exercise","acquired":true,"shares":20000,"price":10.05,"value":201000.0,"ownership":{"direct":true},"balance_after":28913,"source":{"system":"sec-edgar","filing":"0001632594-16-000016","document":"wf-form4a_147637452344416.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000163259416000016/wf-form4a_147637452344416.xml","form_type":"4/A","original_submission_date":"2016-09-23"}},{"id":4582684,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Legal Affairs, Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2016-10-07T11:56:06.000Z","date":"2016-09-20","kind":"exercise","acquired":true,"shares":3940,"price":13.53,"value":53308.2,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"This amendment corrects the number of derivative securities beneficially owned following the reported transaction. The ending amount of derivative securities beneficially owned remains the same from the initial filing."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F2","text":"This amendment corrects the number of derivative securities beneficially owned following the reported transaction. The ending amount of derivative securities beneficially owned remains the same from the initial filing."}],"balance_after":0,"derivative":{"exercise_price":10.27,"exercise_date":"2016-06-08","expiration_date":"2025-12-19","underlying":"Common Stock","underlying_shares":3940},"source":{"system":"sec-edgar","filing":"0001632594-16-000014","document":"wf-form4a_147585575424973.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000163259416000014/wf-form4a_147585575424973.xml","form_type":"4/A","original_submission_date":"2016-09-20"}},{"id":4582683,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Legal Affairs, Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2016-10-07T11:56:06.000Z","date":"2016-09-20","kind":"exercise","acquired":true,"shares":20000,"price":13.53,"value":270600.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amendment corrects the number of derivative securities beneficially owned following the reported transaction. The ending amount of derivative securities beneficially owned remains the same from the initial filing."}],"balance_after":3940,"derivative":{"exercise_price":10.05,"exercise_date":"2016-06-08","expiration_date":"2025-03-23","underlying":"Common Stock","underlying_shares":20000},"source":{"system":"sec-edgar","filing":"0001632594-16-000014","document":"wf-form4a_147585575424973.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000163259416000014/wf-form4a_147585575424973.xml","form_type":"4/A","original_submission_date":"2016-09-20"}},{"id":4582682,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Legal Affairs, Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2016-10-07T11:56:06.000Z","date":"2016-09-20","kind":"tax_withholding","acquired":false,"shares":20415,"price":13.53,"value":276214.95,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This amendment corrects the number of shares acquired and disposed of. The ending amount of securities beneficially owned remains the same from the initial filing."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"This amendment corrects the number of shares acquired and disposed of. The ending amount of securities beneficially owned remains the same from the initial filing."}],"balance_after":12438,"source":{"system":"sec-edgar","filing":"0001632594-16-000014","document":"wf-form4a_147585575424973.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000163259416000014/wf-form4a_147585575424973.xml","form_type":"4/A","original_submission_date":"2016-09-20"}},{"id":4582681,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Legal Affairs, Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2016-10-07T11:56:06.000Z","date":"2016-09-20","kind":"exercise","acquired":true,"shares":3940,"price":10.27,"value":40463.8,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This amendment corrects the number of shares acquired and disposed of. The ending amount of securities beneficially owned remains the same from the initial filing."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"This amendment corrects the number of shares acquired and disposed of. The ending amount of securities beneficially owned remains the same from the initial filing."}],"balance_after":32853,"source":{"system":"sec-edgar","filing":"0001632594-16-000014","document":"wf-form4a_147585575424973.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000163259416000014/wf-form4a_147585575424973.xml","form_type":"4/A","original_submission_date":"2016-09-20"}},{"id":4582680,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Legal Affairs, Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2016-10-07T11:56:06.000Z","date":"2016-09-20","kind":"exercise","acquired":true,"shares":20000,"price":10.05,"value":201000.0,"ownership":{"direct":true},"balance_after":28913,"source":{"system":"sec-edgar","filing":"0001632594-16-000014","document":"wf-form4a_147585575424973.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000163259416000014/wf-form4a_147585575424973.xml","form_type":"4/A","original_submission_date":"2016-09-20"}},{"id":4596270,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Legal Affairs, Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2016-09-23T13:35:31.000Z","date":"2016-09-20","kind":"exercise","acquired":true,"shares":2394,"price":13.53,"value":32390.82,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":10.27,"exercise_date":"2016-06-08","expiration_date":"2025-12-19","underlying":"Common Stock","underlying_shares":2394},"source":{"system":"sec-edgar","filing":"0001632594-16-000010","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000163259416000010/primary_doc.xml","form_type":"4"}},{"id":4596269,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Legal Affairs, Treasurer"}}],"security":"Stock Option (right to buy)","published_at":"2016-09-23T13:35:31.000Z","date":"2016-09-20","kind":"exercise","acquired":true,"shares":20000,"price":13.53,"value":270600.0,"ownership":{"direct":true},"balance_after":2394,"derivative":{"exercise_price":10.05,"exercise_date":"2016-06-08","expiration_date":"2025-03-23","underlying":"Common Stock","underlying_shares":20000},"source":{"system":"sec-edgar","filing":"0001632594-16-000010","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000163259416000010/primary_doc.xml","form_type":"4"}},{"id":4596268,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Legal Affairs, Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2016-09-23T13:35:31.000Z","date":"2016-09-20","kind":"tax_withholding","acquired":false,"shares":18869,"price":13.53,"value":255297.57,"ownership":{"direct":true},"balance_after":12438,"source":{"system":"sec-edgar","filing":"0001632594-16-000010","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000163259416000010/primary_doc.xml","form_type":"4"}},{"id":4596267,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Legal Affairs, Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2016-09-23T13:35:31.000Z","date":"2016-09-20","kind":"exercise","acquired":true,"shares":2394,"price":10.27,"value":24586.38,"ownership":{"direct":true},"balance_after":31307,"source":{"system":"sec-edgar","filing":"0001632594-16-000010","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000163259416000010/primary_doc.xml","form_type":"4"}},{"id":4596266,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":129734,"kind":"person","name":"Yousif Paul","position":1,"cik":"0001632594","reported_name":"Yousif Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Legal Affairs, Treasurer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2016-09-23T13:35:31.000Z","date":"2016-09-20","kind":"exercise","acquired":true,"shares":20000,"price":10.05,"value":201000.0,"ownership":{"direct":true},"balance_after":28913,"source":{"system":"sec-edgar","filing":"0001632594-16-000010","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1632594/000163259416000010/primary_doc.xml","form_type":"4"}}]}