{"transactions":[{"id":4199159,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}}],"security":"Restricted Stock Equivalent Units","published_at":"2017-09-29T06:08:47.000Z","date":"2017-09-27","kind":"exercise","acquired":false,"shares":2907,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"For each vested Restricted Stock Equivalent Unit (\"RSEU\"), Blue Bird Corporation (the \"Issuer\") will make a cash payment to Coliseum Capital Partners, L.P. (\"CCP\") equal to the fair market value of a share of the Issuer's common stock on the Settlement Date. \"Settlement Date\" means the earlier of (i) the date Adam Gray's (\"Gray\") continuous service on the board of the Issuer terminates for any reason or (ii) the date of the consummation of a change of control. The RSEUs vest on April 2, 2018. On September 27, 2017, Mr. Gray ended his service on the board of the Issuer. Therefore, the fair market value of the shares of RSEU were\nequal to the closing price of the Issuer's Common Stock on September 27, 2017."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"For each vested Restricted Stock Equivalent Unit (\"RSEU\"), Blue Bird Corporation (the \"Issuer\") will make a cash payment to Coliseum Capital Partners, L.P. (\"CCP\") equal to the fair market value of a share of the Issuer's common stock on the Settlement Date. \"Settlement Date\" means the earlier of (i) the date Adam Gray's (\"Gray\") continuous service on the board of the Issuer terminates for any reason or (ii) the date of the consummation of a change of control. The RSEUs vest on April 2, 2018. On September 27, 2017, Mr. Gray ended his service on the board of the Issuer. Therefore, the fair market value of the shares of RSEU were\nequal to the closing price of the Issuer's Common Stock on September 27, 2017."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"For each vested Restricted Stock Equivalent Unit (\"RSEU\"), Blue Bird Corporation (the \"Issuer\") will make a cash payment to Coliseum Capital Partners, L.P. (\"CCP\") equal to the fair market value of a share of the Issuer's common stock on the Settlement Date. \"Settlement Date\" means the earlier of (i) the date Adam Gray's (\"Gray\") continuous service on the board of the Issuer terminates for any reason or (ii) the date of the consummation of a change of control. The RSEUs vest on April 2, 2018. On September 27, 2017, Mr. Gray ended his service on the board of the Issuer. Therefore, the fair market value of the shares of RSEU were\nequal to the closing price of the Issuer's Common Stock on September 27, 2017."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The RSEUs were held by CCP pursuant to an agreement under which Gray assigned to CCP the right to receive all compensation (including equity compensation) that Gray would otherwise receive as a director of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"These securities were held directly by CCP, an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser. Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\") is an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Christopher Shackelton (\"Shackelton\") and Gray are managers of CCM and CC. Coliseum School Bus Holdings, LLC (\"CSB\") is a Delaware limited liability company through which CCP, CCP2 and a separate account investment advisory client of CCM (the \"Separate Account\") invested in the Issuer's 7.625% Series A Convertible Cumulative Preferred Stock. CCM is the manager of CSB. Each of Shackelton, Gray, CCP, CCP2, the Separate Account, CC, CSB and CCM disclaim beneficial ownership of these securities except to the extent of that person's pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":2907},"source":{"system":"sec-edgar","filing":"0000899243-17-022836","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317022836/doc4.xml","form_type":"4"}},{"id":4199158,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}}],"security":"Common Stock","published_at":"2017-09-29T06:08:47.000Z","date":"2017-09-27","kind":"disposition_to_issuer","acquired":false,"shares":2907,"price":19.65,"value":57122.55,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"These securities were held directly by CCP, an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser. Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\") is an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Christopher Shackelton (\"Shackelton\") and Gray are managers of CCM and CC. Coliseum School Bus Holdings, LLC (\"CSB\") is a Delaware limited liability company through which CCP, CCP2 and a separate account investment advisory client of CCM (the \"Separate Account\") invested in the Issuer's 7.625% Series A Convertible Cumulative Preferred Stock. CCM is the manager of CSB. Each of Shackelton, Gray, CCP, CCP2, the Separate Account, CC, CSB and CCM disclaim beneficial ownership of these securities except to the extent of that person's pecuniary interest therein."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000899243-17-022836","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317022836/doc4.xml","form_type":"4"}},{"id":4199157,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}}],"security":"Common Stock","published_at":"2017-09-29T06:08:47.000Z","date":"2017-09-27","kind":"exercise","acquired":true,"shares":2907,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Equivalent Units convert into Common Stock on a one-for-one basis."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"For each vested Restricted Stock Equivalent Unit (\"RSEU\"), Blue Bird Corporation (the \"Issuer\") will make a cash payment to Coliseum Capital Partners, L.P. (\"CCP\") equal to the fair market value of a share of the Issuer's common stock on the Settlement Date. \"Settlement Date\" means the earlier of (i) the date Adam Gray's (\"Gray\") continuous service on the board of the Issuer terminates for any reason or (ii) the date of the consummation of a change of control. The RSEUs vest on April 2, 2018. On September 27, 2017, Mr. Gray ended his service on the board of the Issuer. Therefore, the fair market value of the shares of RSEU were\nequal to the closing price of the Issuer's Common Stock on September 27, 2017."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"These securities were held directly by CCP, an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser. Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\") is an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Christopher Shackelton (\"Shackelton\") and Gray are managers of CCM and CC. Coliseum School Bus Holdings, LLC (\"CSB\") is a Delaware limited liability company through which CCP, CCP2 and a separate account investment advisory client of CCM (the \"Separate Account\") invested in the Issuer's 7.625% Series A Convertible Cumulative Preferred Stock. CCM is the manager of CSB. Each of Shackelton, Gray, CCP, CCP2, the Separate Account, CC, CSB and CCM disclaim beneficial ownership of these securities except to the extent of that person's pecuniary interest therein."}],"balance_after":2907,"source":{"system":"sec-edgar","filing":"0000899243-17-022836","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317022836/doc4.xml","form_type":"4"}},{"id":4201618,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Warrants","published_at":"2017-09-26T17:10:07.000Z","date":"2017-09-23","kind":"sale","acquired":false,"shares":512000,"price":3.575,"value":1830400.0,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"These securities were held directly by (a) Coliseum Capital Partners, L.P. (\"CCP\"), an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser, (b) Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\"), an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser, (c) Coliseum School Bus Holdings, LLC (\"CSB\") and (d) a separate account investment advisory client of CCM (the \"Separate Account\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"CCP, CCP II, CSB, and the Separate Account (each a \"Seller\", and collectively, the \"Sellers\") entered into a Securities Purchase Agreement (the \"Purchase Agreement\") on September 23, 2017, pursuant to which the Sellers agreed to sell and the Issuer agreed to purchase all of (i) the shares of common stock, par value $0.0001 (the \"Common Stock\") of the Issuer, (ii) the shares of the Issuer's Series A Convertible Cumulative Preferred Stock, par value $0.0001 per share, and (iii) the warrants to acquire Common Stock, in each case, owned by the Sellers."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"Following the transactions reported herein, CCP, CCP2 and the Separate Account each directly owned zero (0) warrants, respectively."}],"balance_after":0,"derivative":{"exercise_price":5.75,"exercise_date":"2016-02-26","expiration_date":"2020-02-24","underlying":"Common Stock","underlying_shares":256000},"source":{"system":"sec-edgar","filing":"0000899243-17-022596","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317022596/doc4.xml","form_type":"4"}},{"id":4201617,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Series A Convertible Cumulative Preferred Stock","published_at":"2017-09-26T17:10:07.000Z","date":"2017-09-23","kind":"sale","acquired":false,"shares":100000,"price":164.35,"value":16435000.0,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The Series A Convertible Cumulative Preferred Stock is convertible into common stock at any time and has no expiration state."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The Series A Convertible Cumulative Preferred Stock is convertible into common stock at any time and has no expiration state."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"These securities were held directly by (a) Coliseum Capital Partners, L.P. (\"CCP\"), an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser, (b) Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\"), an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser, (c) Coliseum School Bus Holdings, LLC (\"CSB\") and (d) a separate account investment advisory client of CCM (the \"Separate Account\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Christopher Shackelton (\"Shackelton\") and Adam Gray (\"Gray\") are managers of CCM and CC. CSB is a company through which CCP, CCP2 and Separate Account previously invested in the Issuer's 7.625% Series A Convertible Cumulative Preferred Stock (the \"Series A Convertible Cumulative Preferred Stock\"). CCM is the manager of CSB."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The Series A Convertible Cumulative Preferred Stock is convertible into common stock at any time and has no expiration state."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"CCP, CCP II, CSB, and the Separate Account (each a \"Seller\", and collectively, the \"Sellers\") entered into a Securities Purchase Agreement (the \"Purchase Agreement\") on September 23, 2017, pursuant to which the Sellers agreed to sell and the Issuer agreed to purchase all of (i) the shares of common stock, par value $0.0001 (the \"Common Stock\") of the Issuer, (ii) the shares of the Issuer's Series A Convertible Cumulative Preferred Stock, par value $0.0001 per share, and (iii) the warrants to acquire Common Stock, in each case, owned by the Sellers."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Following the transactions reported herein, CSB directly owned zero (0) shares of the Series A Convertible Cumulative Preferred Stock."}],"balance_after":0,"derivative":{"exercise_price":11.59,"underlying":"Common Stock","underlying_shares":862811},"source":{"system":"sec-edgar","filing":"0000899243-17-022596","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317022596/doc4.xml","form_type":"4"}},{"id":4201616,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-09-26T17:10:07.000Z","date":"2017-09-23","kind":"sale","acquired":false,"shares":742566,"price":18.65,"value":13848855.9,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"These securities were held directly by (a) Coliseum Capital Partners, L.P. (\"CCP\"), an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser, (b) Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\"), an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser, (c) Coliseum School Bus Holdings, LLC (\"CSB\") and (d) a separate account investment advisory client of CCM (the \"Separate Account\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"CCP, CCP II, CSB, and the Separate Account (each a \"Seller\", and collectively, the \"Sellers\") entered into a Securities Purchase Agreement (the \"Purchase Agreement\") on September 23, 2017, pursuant to which the Sellers agreed to sell and the Issuer agreed to purchase all of (i) the shares of common stock, par value $0.0001 (the \"Common Stock\") of the Issuer, (ii) the shares of the Issuer's Series A Convertible Cumulative Preferred Stock, par value $0.0001 per share, and (iii) the warrants to acquire Common Stock, in each case, owned by the Sellers."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Following the transactions reported herein, CCP, CCP2, the Separate Account and CSB each directly owned zero (0) shares of the Common Stock, respectively."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000899243-17-022596","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317022596/doc4.xml","form_type":"4"}},{"id":4276236,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-06-20T19:10:52.000Z","date":"2017-06-16","kind":"sale","acquired":false,"shares":219680,"price":18,"value":3954240.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"These securities are held directly by (a) Coliseum Capital Partners, L.P. (\"CCP\"), an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser, (b) Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\"), an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser, (c) Coliseum School Bus Holdings, LLC (\"CSB\") and (d) a separate account investment advisory client of CCM (the \"Separate Account\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Christopher Shackelton (\"Shackelton\") and Adam Gray (\"Gray\") are managers of CCM and CC. CSB is a company through which CCP, CCP2 and Separate Account have invested in the Issuer's 7.625% Series A Convertible Cumulative Preferred Stock. CCM is the manager of CSB. Each of Shackelton, Gray, CCP, CCP2, the Separate Account, CC, CSB and CCM disclaim beneficial ownership of these securities except to the extent of that person's pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Following the transactions reported herein, CCP, CCP2, the Separate Account and CSB directly owned 625,923; 24,951; 91,692; and 0 shares of common stock, respectively."}],"balance_after":742566,"source":{"system":"sec-edgar","filing":"0000899243-17-016790","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317016790/doc4.xml","form_type":"4"}},{"id":4288458,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-06-08T20:06:53.000Z","date":"2017-06-07","kind":"sale","acquired":false,"shares":3000,"price":18.3,"value":54900.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"These securities are held directly by (a) Coliseum Capital Partners, L.P. (\"CCP\"), an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser, (b) Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\"), an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser, (c) Coliseum School Bus Holdings, LLC (\"CSB\") and (d) a separate account investment advisory client of CCM (the \"Separate Account\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Christopher Shackelton (\"Shackelton\") and Adam Gray (\"Gray\") are managers of CCM and CC. CSB is a company through which CCP, CCP2 and Separate Account have invested in the Issuer's 7.625% Series A Convertible Cumulative Preferred Stock. CCM is the manager of CSB. Each of Shackelton, Gray, CCP, CCP2, the Separate Account, CC, CSB and CCM disclaim beneficial ownership of these securities except to the extent of that person's pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Following the transactions reported herein, CCP, CCP2, the Separate Account and CSB directly owned 763,235; 57,428; 141,583; and 0 shares of common stock, respectively."}],"balance_after":962246,"source":{"system":"sec-edgar","filing":"0000899243-17-015834","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317015834/doc4.xml","form_type":"4"}},{"id":4288457,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-06-08T20:06:53.000Z","date":"2017-06-06","kind":"sale","acquired":false,"shares":2000,"price":18.2,"value":36400.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"These securities are held directly by (a) Coliseum Capital Partners, L.P. (\"CCP\"), an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser, (b) Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\"), an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser, (c) Coliseum School Bus Holdings, LLC (\"CSB\") and (d) a separate account investment advisory client of CCM (the \"Separate Account\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Christopher Shackelton (\"Shackelton\") and Adam Gray (\"Gray\") are managers of CCM and CC. CSB is a company through which CCP, CCP2 and Separate Account have invested in the Issuer's 7.625% Series A Convertible Cumulative Preferred Stock. CCM is the manager of CSB. Each of Shackelton, Gray, CCP, CCP2, the Separate Account, CC, CSB and CCM disclaim beneficial ownership of these securities except to the extent of that person's pecuniary interest therein."}],"balance_after":965246,"source":{"system":"sec-edgar","filing":"0000899243-17-015834","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317015834/doc4.xml","form_type":"4"}},{"id":4295841,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-06-02T19:33:37.000Z","date":"2017-06-02","kind":"sale","acquired":false,"shares":2000,"price":18.2,"value":36400.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"These securities are held directly by (a) Coliseum Capital Partners, L.P. (\"CCP\"), an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser, (b) Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\"), an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser, (c) Coliseum School Bus Holdings, LLC (\"CSB\") and (d) a separate account investment advisory client of CCM (the \"Separate Account\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Christopher Shackelton (\"Shackelton\") and Adam Gray (\"Gray\") are managers of CCM and CC. CSB is a company through which CCP, CCP2 and Separate Account have invested in the Issuer's 7.625% Series A Convertible Cumulative Preferred Stock. CCM is the manager of CSB. Each of Shackelton, Gray, CCP, CCP2, the Separate Account, CC, CSB and CCM disclaim beneficial ownership of these securities except to the extent of that person's pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Following the transactions reported herein, CCP, CCP2, the Separate Account and CSB directly owned 766,361; 58,169; 142,716; and 0 shares of common stock, respectively."}],"balance_after":967246,"source":{"system":"sec-edgar","filing":"0000899243-17-015225","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317015225/doc4.xml","form_type":"4"}},{"id":4295840,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-06-02T19:33:37.000Z","date":"2017-05-31","kind":"sale","acquired":false,"shares":25000,"price":18,"value":450000.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"These securities are held directly by (a) Coliseum Capital Partners, L.P. (\"CCP\"), an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser, (b) Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\"), an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser, (c) Coliseum School Bus Holdings, LLC (\"CSB\") and (d) a separate account investment advisory client of CCM (the \"Separate Account\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Christopher Shackelton (\"Shackelton\") and Adam Gray (\"Gray\") are managers of CCM and CC. CSB is a company through which CCP, CCP2 and Separate Account have invested in the Issuer's 7.625% Series A Convertible Cumulative Preferred Stock. CCM is the manager of CSB. Each of Shackelton, Gray, CCP, CCP2, the Separate Account, CC, CSB and CCM disclaim beneficial ownership of these securities except to the extent of that person's pecuniary interest therein."}],"balance_after":969246,"source":{"system":"sec-edgar","filing":"0000899243-17-015225","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317015225/doc4.xml","form_type":"4"}},{"id":4313640,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-05-18T19:52:17.000Z","date":"2017-05-16","kind":"sale","acquired":false,"shares":128369,"price":18.8,"value":2413337.2,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"These securities are held directly by (a) Coliseum Capital Partners, L.P. (\"CCP\"), an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser, (b) Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\"), an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser, (c) Coliseum School Bus Holdings, LLC (\"CSB\") and (d) a separate account investment advisory client of CCM (the \"Separate Account\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Christopher Shackelton (\"Shackelton\") and Adam Gray (\"Gray\") are managers of CCM and CC. CSB is a company through which CCP, CCP2 and Separate Account have invested in the Issuer's 7.625% Series A Convertible Cumulative Preferred Stock. CCM is the manager of CSB. Each of Shackelton, Gray, CCP, CCP2, the Separate Account, CC, CSB and CCM disclaim beneficial ownership of these securities except to the extent of that person's pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Following the transactions reported herein, CCP, CCP2, the Separate Account and CSB directly owned 783,243; 62,166; 148,837; and 0 shares of common stock, respectively."}],"balance_after":994246,"source":{"system":"sec-edgar","filing":"0000899243-17-013811","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317013811/doc4.xml","form_type":"4"}},{"id":4358325,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Restricted Stock Equivalent Units","published_at":"2017-04-05T17:29:45.000Z","date":"2017-04-03","kind":"grant","acquired":true,"shares":2907,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"For each vested Restricted Stock Equivalent Unit (\"RSEU\"), Blue Bird Corporation (the \"Issuer\") will make a cash payment to Coliseum Capital Partners, L.P. (\"CCP\") equal to the fair market value of a share of the Issuer's common stock on the Settlement Date. \"Settlement Date\" means the earlier of (i) the date Adam Gray's (\"Gray\") continuous service on the board of the Issuer terminates for any reason or (ii) the date of the consummation of a change of control. The RSEUs vest on April 2, 2018."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"For each vested Restricted Stock Equivalent Unit (\"RSEU\"), Blue Bird Corporation (the \"Issuer\") will make a cash payment to Coliseum Capital Partners, L.P. (\"CCP\") equal to the fair market value of a share of the Issuer's common stock on the Settlement Date. \"Settlement Date\" means the earlier of (i) the date Adam Gray's (\"Gray\") continuous service on the board of the Issuer terminates for any reason or (ii) the date of the consummation of a change of control. The RSEUs vest on April 2, 2018."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"For each vested Restricted Stock Equivalent Unit (\"RSEU\"), Blue Bird Corporation (the \"Issuer\") will make a cash payment to Coliseum Capital Partners, L.P. (\"CCP\") equal to the fair market value of a share of the Issuer's common stock on the Settlement Date. \"Settlement Date\" means the earlier of (i) the date Adam Gray's (\"Gray\") continuous service on the board of the Issuer terminates for any reason or (ii) the date of the consummation of a change of control. The RSEUs vest on April 2, 2018."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The RSEUs were received by CCP pursuant to an agreement under which Gray assigned to CCP the right to receive all compensation (including equity compensation) that Gray would otherwise receive as a director of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"These securities are held directly by CCP, an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser. Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\") is an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Christopher Shackelton (\"Shackelton\") and Gray are managers of CCM and CC. Coliseum School Bus Holdings, LLC (\"CSB\") is a Delaware limited liability company through which CCP, CCP2 and a separate account investment advisory client of CCM (the \"Separate Account\") have invested in the Issuer's 7.625% Series A Convertible Cumulative Preferred Stock. CCM is the manager of CSB. Each of Shackelton, Gray, CCP, CCP2, the Separate Account, CC, CSB and CCM disclaim beneficial ownership of these securities except to the extent of that person's pecuniary interest therein."}],"balance_after":2907,"derivative":{"underlying":"Common Stock","underlying_shares":2907},"source":{"system":"sec-edgar","filing":"0000899243-17-009506","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317009506/doc4.xml","form_type":"4"}},{"id":4375128,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-03-22T16:48:08.000Z","date":"2017-03-21","kind":"sale","acquired":false,"shares":50000,"price":17,"value":850000.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"These securities are held directly by (a) Coliseum Capital Partners, L.P. (\"CCP\"), an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser, (b) Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\"), an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser, (c) Coliseum School Bus Holdings, LLC (\"CSB\") and (d) a separate account investment advisory client of CCM (the \"Separate Account\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Christopher Shackelton (\"Shackelton\") and Adam Gray (\"Gray\") are managers of CCM and CC. CSB is a company through which CCP, CCP2 and Separate Account have invested in the Issuer's 7.625% Series A Convertible Cumulative Preferred Stock. CCM is the manager of CSB. Each of Shackelton, Gray, CCP, CCP2, the Separate Account, CC, CSB and CCM disclaim beneficial ownership of these securities except to the extent of that person's pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Following the transactions reported herein, CCP, CCP2, the Separate Account and CSB directly owned 862,754; 82,435; 177,426; and 0 shares of common stock, respectively."}],"balance_after":1122615,"source":{"system":"sec-edgar","filing":"0000899243-17-008393","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317008393/doc4.xml","form_type":"4"}},{"id":4375127,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-03-22T16:48:08.000Z","date":"2017-03-20","kind":"sale","acquired":false,"shares":464570,"price":17,"value":7897690.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"These securities are held directly by (a) Coliseum Capital Partners, L.P. (\"CCP\"), an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser, (b) Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\"), an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser, (c) Coliseum School Bus Holdings, LLC (\"CSB\") and (d) a separate account investment advisory client of CCM (the \"Separate Account\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Christopher Shackelton (\"Shackelton\") and Adam Gray (\"Gray\") are managers of CCM and CC. CSB is a company through which CCP, CCP2 and Separate Account have invested in the Issuer's 7.625% Series A Convertible Cumulative Preferred Stock. CCM is the manager of CSB. Each of Shackelton, Gray, CCP, CCP2, the Separate Account, CC, CSB and CCM disclaim beneficial ownership of these securities except to the extent of that person's pecuniary interest therein."}],"balance_after":1172615,"source":{"system":"sec-edgar","filing":"0000899243-17-008393","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317008393/doc4.xml","form_type":"4"}},{"id":4390841,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-03-10T17:59:34.000Z","date":"2017-03-09","kind":"sale","acquired":false,"shares":194234,"price":17,"value":3301978.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"These securities are held directly by (a) Coliseum Capital Partners, L.P. (\"CCP\"), an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser, (b) Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\"), an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser, (c) Coliseum School Bus Holdings, LLC (\"CSB\") and (d) a separate account investment advisory client of CCM (the \"Separate Account\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Christopher Shackelton (\"Shackelton\") and Adam Gray (\"Gray\") are managers of CCM and CC. CSB is a company through which CCP, CCP2 and Separate Account have invested in the Issuer's 7.625% Series A Convertible Cumulative Preferred Stock. CCM is the manager of CSB. Each of Shackelton, Gray, CCP, CCP2, the Separate Account, CC, CSB and CCM disclaim beneficial ownership of these securities except to the extent of that person's pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Following the transactions reported herein, CCP, CCP2, the Separate Account and CSB directly owned 1,181,068; 163,120; 292,997; and 0 shares of common stock, respectively."}],"balance_after":1637185,"source":{"system":"sec-edgar","filing":"0000899243-17-007189","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317007189/doc4.xml","form_type":"4"}},{"id":4390840,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-03-10T17:59:34.000Z","date":"2017-03-08","kind":"sale","acquired":false,"shares":400187,"price":17,"value":6803179.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"These securities are held directly by (a) Coliseum Capital Partners, L.P. (\"CCP\"), an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser, (b) Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\"), an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser, (c) Coliseum School Bus Holdings, LLC (\"CSB\") and (d) a separate account investment advisory client of CCM (the \"Separate Account\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Christopher Shackelton (\"Shackelton\") and Adam Gray (\"Gray\") are managers of CCM and CC. CSB is a company through which CCP, CCP2 and Separate Account have invested in the Issuer's 7.625% Series A Convertible Cumulative Preferred Stock. CCM is the manager of CSB. Each of Shackelton, Gray, CCP, CCP2, the Separate Account, CC, CSB and CCM disclaim beneficial ownership of these securities except to the extent of that person's pecuniary interest therein."}],"balance_after":1831419,"source":{"system":"sec-edgar","filing":"0000899243-17-007189","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317007189/doc4.xml","form_type":"4"}},{"id":4404361,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-03-03T18:48:49.000Z","date":"2017-03-02","kind":"sale","acquired":false,"shares":15699,"price":17.03,"value":267353.97,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.00 to $17.10 per share, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the SEC, upon request, full information regarding the number of shares sold at such price set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These securities are held directly by (a) Coliseum Capital Partners, L.P. (\"CCP\"), an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser, (b) Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\"), an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser, (c) Coliseum School Bus Holdings, LLC (\"CSB\") and (d) a separate account investment advisory client of CCM (the \"Separate Account\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Christopher Shackelton (\"Shackelton\") and Adam Gray (\"Gray\") are managers of CCM and CC. CSB is a company through which CCP, CCP2 and Separate Account have invested in the Issuer's 7.625% Series A Convertible Cumulative Preferred Stock. CCM is the manager of CSB. Each of Shackelton, Gray, CCP, CCP2, the Separate Account, CC, CSB and CCM disclaim beneficial ownership of these securities except to the extent of that person's pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Following the transactions reported herein, CCP, CCP2, the Separate Account and CSB directly owned 1,548,992; 256,470; 426,144; and 0 shares of common stock, respectively."}],"balance_after":2231606,"source":{"system":"sec-edgar","filing":"0000899243-17-006481","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317006481/doc4.xml","form_type":"4"}},{"id":4404360,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-03-03T18:48:49.000Z","date":"2017-03-01","kind":"sale","acquired":false,"shares":9790,"price":17.05,"value":166919.5,"ownership":{"direct":false,"nature":"See Footnotes"},"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 $17.05 to $17.08 per share, inclusive. The reporting person undertakes to provide to the Blue Bird Corporation (the \"Issuer\"), any security holder of the Issuer or the staff of the Securities and Exchange Commission (the \"SEC\"), upon request, full information regarding the number of shares sold at such price set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These securities are held directly by (a) Coliseum Capital Partners, L.P. (\"CCP\"), an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser, (b) Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\"), an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser, (c) Coliseum School Bus Holdings, LLC (\"CSB\") and (d) a separate account investment advisory client of CCM (the \"Separate Account\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Christopher Shackelton (\"Shackelton\") and Adam Gray (\"Gray\") are managers of CCM and CC. CSB is a company through which CCP, CCP2 and Separate Account have invested in the Issuer's 7.625% Series A Convertible Cumulative Preferred Stock. CCM is the manager of CSB. Each of Shackelton, Gray, CCP, CCP2, the Separate Account, CC, CSB and CCM disclaim beneficial ownership of these securities except to the extent of that person's pecuniary interest therein."}],"balance_after":2247305,"source":{"system":"sec-edgar","filing":"0000899243-17-006481","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317006481/doc4.xml","form_type":"4"}},{"id":4427878,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-02-23T19:27:16.000Z","date":"2017-02-21","kind":"sale","acquired":false,"shares":116100,"price":17,"value":1973700.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"These shares were sold in multiple transactions at a price of $17.00 per share. The reporting person undertakes to provide to the Blue Bird Corporation (the \"Issuer\"), any security holder of the Issuer or the staff of the Securities and Exchange Commission (the \"SEC\"), upon request, full information regarding the number of shares sold at such price set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These securities are held directly by (a) Coliseum Capital Partners, L.P. (\"CCP\"), an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser, (b) Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\"), an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser, (c) Coliseum School Bus Holdings, LLC (\"CSB\") and (d) a separate account investment advisory client of CCM (the \"Separate Account\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Christopher Shackelton (\"Shackelton\") and Adam Gray (\"Gray\") are managers of CCM and CC. CSB is a company through which CCP, CCP2 and Separate Account have invested in the Issuer's 7.625% Series A Convertible Cumulative Preferred Stock. CCM is the manager of CSB. Each of Shackelton, Gray, CCP, CCP2, the Separate Account, CC, CSB and CCM disclaim beneficial ownership of these securities except to the extent of that person's pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Following the transactions reported herein, CCP, CCP2, the Separate Account and CSB directly owned 1,564,805; 260,484; 431,806; and 0 shares of common stock, respectively."}],"balance_after":2257095,"source":{"system":"sec-edgar","filing":"0000899243-17-005129","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317005129/doc4.xml","form_type":"4"}},{"id":4442695,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-02-16T17:33:48.000Z","date":"2017-02-15","kind":"sale","acquired":false,"shares":3000,"price":17,"value":51000.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"These shares were sold in multiple transactions at a price of $17.00 per share. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the SEC, upon request, full information regarding the number of shares sold at such price set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"These securities are held directly by (a) Coliseum Capital Partners, L.P. (\"CCP\"), an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser, (b) Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\"), an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser, (c) Coliseum School Bus Holdings, LLC (\"CSB\")  and (d) a separate account investment advisory client of CCM (the \"Separate Account\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Christopher Shackelton (\"Shackelton\") and Adam Gray (\"Gray\") are managers of CCM and CC. CSB is a company through which CCP, CCP2 and Separate Account have invested in the Issuer's 7.625% Series A Convertible Cumulative Preferred Stock. CCM is the manager of CSB.  Each of Shackelton, Gray, CCP, CCP2, the Separate Account, CC, CSB and CCM disclaim beneficial ownership of these securities except to the extent of that person's pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Following the transactions reported herein, CCP, CCP2, the Separate Account, and CSB directly owned 1,636,725; 278,721; 457,749; and 0 shares of common stock, respectively."}],"balance_after":2373195,"source":{"system":"sec-edgar","filing":"0000899243-17-004369","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317004369/doc4.xml","form_type":"4"}},{"id":4442694,"issuer":{"id":4539,"kind":"organization","name":"Blue Bird Corp","symbol":"BLBD"},"owners":[{"id":39649,"kind":"person","name":"Coliseum Capital Management, LLC","position":1,"cik":"0001409751","reported_name":"Coliseum Capital Management, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39650,"kind":"person","name":"Shackelton Christopher S","position":2,"cik":"0001430708","reported_name":"Shackelton Christopher S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39651,"kind":"person","name":"Coliseum Capital, LLC","position":3,"cik":"0001409585","reported_name":"Coliseum Capital, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39652,"kind":"person","name":"COLISEUM CAPITAL PARTNERS, L.P.","position":4,"cik":"0001356974","reported_name":"COLISEUM CAPITAL PARTNERS, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":84140,"kind":"organization","name":"Coliseum Capital Partners II, L.P.","position":5,"cik":"0001567187","reported_name":"Coliseum Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":39653,"kind":"person","name":"Gray Adam","position":6,"cik":"0001454123","reported_name":"Gray Adam","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":172865,"kind":"organization","name":"Coliseum School Bus Holdings, LLC","position":7,"cik":"0001635060","reported_name":"Coliseum School Bus Holdings, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-02-16T17:33:48.000Z","date":"2017-02-14","kind":"sale","acquired":false,"shares":240409,"price":17,"value":4086953.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"These shares were sold in multiple transactions at a price of $17.00 per share. The reporting person undertakes to provide to the Blue Bird Corporation (the \"Issuer\"), any security holder of the Issuer or the staff of the Securities and Exchange Commission (the \"SEC\"), upon request, full information regarding the number of shares sold at such price set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"These securities are held directly by (a) Coliseum Capital Partners, L.P. (\"CCP\"), an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company (\"CC\"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company (\"CCM\"), serves as investment adviser, (b) Coliseum Capital Partners II, L.P. (\"CCP2\" and, together with CCP, the \"Funds\"), an investment limited partnership of which CC is general partner and for which CCM serves as investment adviser, (c) Coliseum School Bus Holdings, LLC (\"CSB\")  and (d) a separate account investment advisory client of CCM (the \"Separate Account\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Christopher Shackelton (\"Shackelton\") and Adam Gray (\"Gray\") are managers of CCM and CC. CSB is a company through which CCP, CCP2 and Separate Account have invested in the Issuer's 7.625% Series A Convertible Cumulative Preferred Stock. CCM is the manager of CSB.  Each of Shackelton, Gray, CCP, CCP2, the Separate Account, CC, CSB and CCM disclaim beneficial ownership of these securities except to the extent of that person's pecuniary interest therein."}],"balance_after":2376195,"source":{"system":"sec-edgar","filing":"0000899243-17-004369","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1635060/000089924317004369/doc4.xml","form_type":"4"}}]}