{"transactions":[{"id":2785443,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Stock Option (right to buy)","published_at":"2021-03-16T12:57:22.000Z","date":"2020-12-11","kind":"grant","acquired":true,"shares":5787,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","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":5787,"derivative":{"exercise_price":16.2,"expiration_date":"2030-12-10","underlying":"Common Stock","underlying_shares":5787},"source":{"system":"sec-edgar","filing":"0001589526-21-000017","document":"wf-form4a_161589942969239.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952621000017/wf-form4a_161589942969239.xml","form_type":"4/A","original_submission_date":"2020-12-15"}},{"id":2785442,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Stock Option (right to buy)","published_at":"2021-03-16T12:57:22.000Z","date":"2020-12-11","kind":"grant","acquired":true,"shares":2319,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F6","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":2319,"derivative":{"exercise_price":20.26,"exercise_date":"2020-12-11","expiration_date":"2029-12-11","underlying":"Common Stock","underlying_shares":2319},"source":{"system":"sec-edgar","filing":"0001589526-21-000017","document":"wf-form4a_161589942969239.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952621000017/wf-form4a_161589942969239.xml","form_type":"4/A","original_submission_date":"2020-12-15"}},{"id":2785441,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Stock Option (right to buy)","published_at":"2021-03-16T12:57:22.000Z","date":"2020-12-11","kind":"grant","acquired":true,"shares":2944,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F5","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":2944,"derivative":{"exercise_price":16.99,"exercise_date":"2020-12-11","expiration_date":"2028-12-10","underlying":"Common Stock","underlying_shares":2944},"source":{"system":"sec-edgar","filing":"0001589526-21-000017","document":"wf-form4a_161589942969239.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952621000017/wf-form4a_161589942969239.xml","form_type":"4/A","original_submission_date":"2020-12-15"}},{"id":2785440,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Stock Option (right to buy)","published_at":"2021-03-16T12:57:22.000Z","date":"2020-12-11","kind":"grant","acquired":true,"shares":1951,"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 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":1951,"derivative":{"exercise_price":18.1,"exercise_date":"2020-12-11","expiration_date":"2027-12-10","underlying":"Common Stock","underlying_shares":1951},"source":{"system":"sec-edgar","filing":"0001589526-21-000017","document":"wf-form4a_161589942969239.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952621000017/wf-form4a_161589942969239.xml","form_type":"4/A","original_submission_date":"2020-12-15"}},{"id":2785439,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2021-03-16T12:57:22.000Z","date":"2020-12-11","kind":"grant","acquired":true,"shares":11285,"price":16.2,"value":182817.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","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 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":30834,"source":{"system":"sec-edgar","filing":"0001589526-21-000017","document":"wf-form4a_161589942969239.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952621000017/wf-form4a_161589942969239.xml","form_type":"4/A","original_submission_date":"2020-12-15"}},{"id":2785438,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2021-03-16T12:57:22.000Z","date":"2020-12-11","kind":"tax_withholding","acquired":false,"shares":1736,"price":16.2,"value":28123.2,"ownership":{"direct":true},"balance_after":19549,"source":{"system":"sec-edgar","filing":"0001589526-21-000017","document":"wf-form4a_161589942969239.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952621000017/wf-form4a_161589942969239.xml","form_type":"4/A","original_submission_date":"2020-12-15"}},{"id":2785437,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2021-03-16T12:57:22.000Z","date":"2020-12-11","kind":"disposition_to_issuer","acquired":false,"shares":752,"price":20.26,"value":15235.52,"ownership":{"direct":true},"balance_after":21285,"source":{"system":"sec-edgar","filing":"0001589526-21-000017","document":"wf-form4a_161589942969239.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952621000017/wf-form4a_161589942969239.xml","form_type":"4/A","original_submission_date":"2020-12-15"}},{"id":2785436,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2021-03-16T12:57:22.000Z","date":"2020-12-11","kind":"disposition_to_issuer","acquired":false,"shares":319,"price":16.99,"value":5419.81,"ownership":{"direct":true},"balance_after":22037,"source":{"system":"sec-edgar","filing":"0001589526-21-000017","document":"wf-form4a_161589942969239.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952621000017/wf-form4a_161589942969239.xml","form_type":"4/A","original_submission_date":"2020-12-15"}},{"id":2785435,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2021-03-16T12:57:22.000Z","date":"2020-12-11","kind":"disposition_to_issuer","acquired":false,"shares":212,"price":18.1,"value":3837.2,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"This amended Form 4 corrects the amount of securities beneficially owned by the reporting person as identified in column 5 of Table I"}],"balance_after":22356,"source":{"system":"sec-edgar","filing":"0001589526-21-000017","document":"wf-form4a_161589942969239.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952621000017/wf-form4a_161589942969239.xml","form_type":"4/A","original_submission_date":"2020-12-15"}},{"id":2944014,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Stock Option (right to buy)","published_at":"2020-12-15T20:56:24.000Z","date":"2020-12-11","kind":"grant","acquired":true,"shares":5787,"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":5787,"derivative":{"exercise_price":16.2,"expiration_date":"2030-12-10","underlying":"Common Stock","underlying_shares":5787},"source":{"system":"sec-edgar","filing":"0001589526-20-000102","document":"wf-form4_160806577182104.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952620000102/wf-form4_160806577182104.xml","form_type":"4"}},{"id":2944013,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Stock Option (right to buy)","published_at":"2020-12-15T20:56:24.000Z","date":"2020-12-11","kind":"grant","acquired":true,"shares":2319,"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":2319,"derivative":{"exercise_price":20.26,"exercise_date":"2020-12-11","expiration_date":"2029-12-11","underlying":"Common Stock","underlying_shares":2319},"source":{"system":"sec-edgar","filing":"0001589526-20-000102","document":"wf-form4_160806577182104.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952620000102/wf-form4_160806577182104.xml","form_type":"4"}},{"id":2944012,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Stock Option (right to buy)","published_at":"2020-12-15T20:56:24.000Z","date":"2020-12-11","kind":"grant","acquired":true,"shares":2944,"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":2944,"derivative":{"exercise_price":16.99,"exercise_date":"2020-12-11","expiration_date":"2028-12-10","underlying":"Common Stock","underlying_shares":2944},"source":{"system":"sec-edgar","filing":"0001589526-20-000102","document":"wf-form4_160806577182104.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952620000102/wf-form4_160806577182104.xml","form_type":"4"}},{"id":2944011,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Stock Option (right to buy)","published_at":"2020-12-15T20:56:24.000Z","date":"2020-12-11","kind":"grant","acquired":true,"shares":1951,"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":1951,"derivative":{"exercise_price":18.1,"exercise_date":"2020-12-11","expiration_date":"2027-12-10","underlying":"Common Stock","underlying_shares":1951},"source":{"system":"sec-edgar","filing":"0001589526-20-000102","document":"wf-form4_160806577182104.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952620000102/wf-form4_160806577182104.xml","form_type":"4"}},{"id":2944010,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2020-12-15T20:56:24.000Z","date":"2020-12-11","kind":"grant","acquired":true,"shares":11285,"price":16.2,"value":182817.0,"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, 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":14398,"source":{"system":"sec-edgar","filing":"0001589526-20-000102","document":"wf-form4_160806577182104.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952620000102/wf-form4_160806577182104.xml","form_type":"4"}},{"id":2944009,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2020-12-15T20:56:24.000Z","date":"2020-12-11","kind":"tax_withholding","acquired":false,"shares":1736,"price":16.2,"value":28123.2,"ownership":{"direct":true},"balance_after":3113,"source":{"system":"sec-edgar","filing":"0001589526-20-000102","document":"wf-form4_160806577182104.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952620000102/wf-form4_160806577182104.xml","form_type":"4"}},{"id":2944008,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2020-12-15T20:56:24.000Z","date":"2020-12-11","kind":"disposition_to_issuer","acquired":false,"shares":752,"price":20.26,"value":15235.52,"ownership":{"direct":true},"balance_after":4849,"source":{"system":"sec-edgar","filing":"0001589526-20-000102","document":"wf-form4_160806577182104.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952620000102/wf-form4_160806577182104.xml","form_type":"4"}},{"id":2944007,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2020-12-15T20:56:24.000Z","date":"2020-12-11","kind":"disposition_to_issuer","acquired":false,"shares":319,"price":16.99,"value":5419.81,"ownership":{"direct":true},"balance_after":5601,"source":{"system":"sec-edgar","filing":"0001589526-20-000102","document":"wf-form4_160806577182104.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952620000102/wf-form4_160806577182104.xml","form_type":"4"}},{"id":2944006,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2020-12-15T20:56:24.000Z","date":"2020-12-11","kind":"disposition_to_issuer","acquired":false,"shares":212,"price":18.1,"value":3837.2,"ownership":{"direct":true},"balance_after":5920,"source":{"system":"sec-edgar","filing":"0001589526-20-000102","document":"wf-form4_160806577182104.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952620000102/wf-form4_160806577182104.xml","form_type":"4"}},{"id":3123197,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Stock Option (right to buy)","published_at":"2020-06-03T20:04:03.000Z","date":"2019-12-11","kind":"grant","acquired":true,"shares":4627,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"The reported transaction was 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":4627,"derivative":{"exercise_price":20.26,"expiration_date":"2029-12-11","underlying":"Common Stock","underlying_shares":4627},"source":{"system":"sec-edgar","filing":"0001589526-20-000078","document":"wf-form4a_159121460999238.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952620000078/wf-form4a_159121460999238.xml","form_type":"4/A","original_submission_date":"2019-12-13"}},{"id":3317473,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Stock Option (right to buy)","published_at":"2020-01-06T20:24:09.000Z","date":"2020-01-03","kind":"grant","acquired":true,"shares":4357,"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 13,071 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":4357,"derivative":{"exercise_price":15.5,"exercise_date":"2020-01-03","expiration_date":"2027-01-03","underlying":"Common Stock","underlying_shares":4357},"source":{"system":"sec-edgar","filing":"0001589526-20-000004","document":"wf-form4_157834223177330.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952620000004/wf-form4_157834223177330.xml","form_type":"4"}},{"id":3317472,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2020-01-06T20:24:09.000Z","date":"2020-01-03","kind":"tax_withholding","acquired":false,"shares":580,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":22568,"source":{"system":"sec-edgar","filing":"0001589526-20-000004","document":"wf-form4_157834223177330.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952620000004/wf-form4_157834223177330.xml","form_type":"4"}},{"id":3342041,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Stock Option (right to buy)","published_at":"2019-12-13T21:39:14.000Z","date":"2019-12-11","kind":"grant","acquired":true,"shares":3924,"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 11,772 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":3924,"derivative":{"exercise_price":16.99,"exercise_date":"2019-12-11","expiration_date":"2028-12-11","underlying":"Common Stock","underlying_shares":3924},"source":{"system":"sec-edgar","filing":"0001589526-19-000057","document":"wf-form4_157627313658387.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952619000057/wf-form4_157627313658387.xml","form_type":"4"}},{"id":3342040,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Stock Option (right to buy)","published_at":"2019-12-13T21:39:14.000Z","date":"2019-12-11","kind":"grant","acquired":true,"shares":2601,"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 7,803 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":2601,"derivative":{"exercise_price":18.1,"exercise_date":"2019-12-11","expiration_date":"2027-12-11","underlying":"Common Stock","underlying_shares":2601},"source":{"system":"sec-edgar","filing":"0001589526-19-000057","document":"wf-form4_157627313658387.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952619000057/wf-form4_157627313658387.xml","form_type":"4"}},{"id":3342039,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2019-12-13T21:39:14.000Z","date":"2019-12-11","kind":"tax_withholding","acquired":false,"shares":805,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":23148,"source":{"system":"sec-edgar","filing":"0001589526-19-000057","document":"wf-form4_157627313658387.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952619000057/wf-form4_157627313658387.xml","form_type":"4"}},{"id":3342038,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":141257,"kind":"person","name":"Jenkins Charles R III","position":1,"cik":"0001794848","reported_name":"Jenkins Charles R III","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2019-12-13T21:39:14.000Z","date":"2019-12-11","kind":"grant","acquired":true,"shares":9023,"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":23953,"source":{"system":"sec-edgar","filing":"0001589526-19-000057","document":"wf-form4_157627313658387.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1589526/000158952619000057/wf-form4_157627313658387.xml","form_type":"4"}}]}