BLBD

SEC source: 0001589526-24-000037 · wk-form4_1709581891.xml · derivative · entry 6

Smith Britton · CIK 0001980390 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.0001 · 3,114 shares

Expires 2032-12-12

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001589526-24-000037 · wk-form4_1709581891.xml · derivative · entry 5

Smith Britton · CIK 0001980390 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,229

Underlying: Common Stock, par value $0.0001 · 3,114 shares

Expires 2032-12-12

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: One of the option's three tranches vested on December 12, 2023.

SEC source: 0001589526-24-000037 · wk-form4_1709581891.xml · nonDerivative · entry 4

Smith Britton · CIK 0001980390 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 87,250

SEC source: 0001589526-24-000037 · wk-form4_1709581891.xml · nonDerivative · entry 3

Smith Britton · CIK 0001980390 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 90,364

SEC source: 0001589526-24-000037 · wk-form4_1709581891.xml · nonDerivative · entry 2

Smith Britton · CIK 0001980390 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 93,478

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001589526-24-000037 · wk-form4_1709581891.xml · nonDerivative · entry 1

Smith Britton · CIK 0001980390 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 90,364

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001589526-24-000035 · wk-form4_1708718987.xml · derivative · entry 9

Radulescu Razvan · CIK 0001884757 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.0001 · 3,504 shares

Expires 2032-12-12

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001589526-24-000035 · wk-form4_1708718987.xml · derivative · entry 8

Radulescu Razvan · CIK 0001884757 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,007

Underlying: Common Stock, par value $0.0001 · 3,504 shares

Expires 2032-12-12

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_date: One of the option's three tranches vested on December 12, 2023.

SEC source: 0001589526-24-000035 · wk-form4_1708718987.xml · derivative · entry 7

Radulescu Razvan · CIK 0001884757 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.0001 · 2,164 shares

Expires 2031-12-11

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001589526-24-000035 · wk-form4_1708718987.xml · derivative · entry 6

Radulescu Razvan · CIK 0001884757 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.0001 · 2,164 shares

Expires 2031-12-11

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001589526-24-000035 · wk-form4_1708718987.xml · derivative · entry 5

Radulescu Razvan · CIK 0001884757 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,165

Underlying: Common Stock, par value $0.0001 · 4,326 shares

Expires 2031-12-11

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: Two of the option's three tranches vested in equal installments on December 11, 2022 and 2023.

SEC source: 0001589526-24-000035 · wk-form4_1708718987.xml · nonDerivative · entry 4

Radulescu Razvan · CIK 0001884757 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 97,362

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.31 to $30.67, inclusive. The reporting person undertakes to provide to Blue Bird Corporation, any security holder of Blue Bird Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001589526-24-000035 · wk-form4_1708718987.xml · nonDerivative · entry 3

Radulescu Razvan · CIK 0001884757 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 113,024

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001589526-24-000035 · wk-form4_1708718987.xml · nonDerivative · entry 2

Radulescu Razvan · CIK 0001884757 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 106,016

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001140361-24-009057 · form4.xml · nonDerivative · entry 1

ASP BB Holdings LLC · CIK 0001676272 · 10% owner

ASP BB Investco LP · CIK 0001676268 · 10% owner

American Securities Partners VII, L.P. · CIK 0001616823 · 10% owner

American Securities Partners VII(B), L.P. · CIK 0001616822 · 10% owner

American Securities Partners VII(C), L.P. · CIK 0001616821 · 10% owner

American Securities Associates VII, LLC · CIK 0001676248 · 10% owner

AMERICAN SECURITIES LLC · CIK 0001475483 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · kind: Sold by ASP BB Holdings LLC ("Holdings") in an underwritten registered public offering. In connection with such sale and in respect of certain fees, Holdings also received a payment of $1,330,031.85 from the Issuer.

F2 · balance_after: The shares were owned directly by ASP BB Holdings LLC and may also have been deemed to be indirectly beneficially owned by (i) ASP BB Investco LP, the sole member of Holdings ("Investco"), (ii) American Securities Partners VII, L.P., American Securities Partners VII(B), L.P. and American Securities Partners VII(C), L.P., the owners of partnership interests in Investco (each, a "Sponsor"), (iii) American Securities Associates VII, LLC, as general partner of the Sponsors ("GP"), and (iv) American Securities LLC, which provides investment advisory services to each Sponsor.

F3 · balance_after: Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of such Reporting Person's pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F2 · ownership.direct: The shares were owned directly by ASP BB Holdings LLC and may also have been deemed to be indirectly beneficially owned by (i) ASP BB Investco LP, the sole member of Holdings ("Investco"), (ii) American Securities Partners VII, L.P., American Securities Partners VII(B), L.P. and American Securities Partners VII(C), L.P., the owners of partnership interests in Investco (each, a "Sponsor"), (iii) American Securities Associates VII, LLC, as general partner of the Sponsors ("GP"), and (iv) American Securities LLC, which provides investment advisory services to each Sponsor.

F3 · ownership.direct: Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of such Reporting Person's pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001589526-24-000035 · wk-form4_1708718987.xml · nonDerivative · entry 1

Radulescu Razvan · CIK 0001884757 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 97,362

SEC source: 0001589526-24-000033 · wk-form4_1708528940.xml · nonDerivative · entry 1

BEDI GURMINDER S · CIK 0001198462 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,896

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.15 to $31.64, inclusive. The reporting person undertakes to provide to Blue Bird Corporation, any security holder of Blue Bird Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001589526-24-000031 · wk-form4_1708032433.xml · nonDerivative · entry 1

Horlock Phil · CIK 0001579477 · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 299,812

F1 · price: This represents the price at which shares were sold on 02/15/2024, pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 09/14/2023.

SEC source: 0001589526-24-000029 · wk-form4_1707430812.xml · nonDerivative · entry 1

Horlock Phil · CIK 0001579477 · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 357,374

F1 · price: This represents the price at which shares were sold on 02/08/2024, pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 09/14/2023.

SEC source: 0001589526-24-000016 · wk-form4_1706889516.xml · nonDerivative · entry 1

Horlock Phil · CIK 0001579477 · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 374,812

F1 · price: This represents the price at which shares were sold on 2/1/2024, pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 09/14/2023.

SEC source: 0001589526-24-000009 · wk-form4_1706739999.xml · nonDerivative · entry 1

Horlock Phil · CIK 0001579477 · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 449,812

F1 · price: This represents the price at which shares were sold on 1/29/2024, pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 09/14/2023.

SEC source: 0001589526-23-000142 · wk-form4_1703688569.xml · nonDerivative · entry 1

Horlock Phil · CIK 0001579477 · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 499,812

F1 · price: This represents the price at which shares were sold in several transactions on 12/26/2023, pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 09/14/2023.

SEC source: 0001140361-23-058662 · form4.xml · nonDerivative · entry 1

ASP BB Holdings LLC · CIK 0001676272 · 10% owner

ASP BB Investco LP · CIK 0001676268 · 10% owner

American Securities Partners VII, L.P. · CIK 0001616823 · 10% owner

American Securities Partners VII(B), L.P. · CIK 0001616822 · 10% owner

American Securities Partners VII(C), L.P. · CIK 0001616821 · 10% owner

American Securities Associates VII, LLC · CIK 0001676248 · 10% owner

AMERICAN SECURITIES LLC · CIK 0001475483 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,042,650

F1 · kind: Sold by ASP BB Holdings LLC ("Holdings") in an underwritten registered public offering. In connection with such sale and in respect of certain fees, Holdings also received a payment of $627,500 from the Issuer.

F2 · balance_after: The shares are owned directly by ASP BB Holdings LLC and may also be deemed to be indirectly beneficially owned by (i) ASP BB Investco LP, the sole member of Holdings ("Investco"), (ii) American Securities Partners VII, L.P., American Securities Partners VII(B), L.P. and American Securities Partners VII(C), L.P., the owners of partnership interests in Investco (each, a "Sponsor"), (iii) American Securities Associates VII, LLC, as general partner of the Sponsors ("GP"), and (iv) American Securities LLC, which provides investment advisory services to each Sponsor.

F3 · balance_after: Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of such Reporting Person's pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F2 · ownership.direct: The shares are owned directly by ASP BB Holdings LLC and may also be deemed to be indirectly beneficially owned by (i) ASP BB Investco LP, the sole member of Holdings ("Investco"), (ii) American Securities Partners VII, L.P., American Securities Partners VII(B), L.P. and American Securities Partners VII(C), L.P., the owners of partnership interests in Investco (each, a "Sponsor"), (iii) American Securities Associates VII, LLC, as general partner of the Sponsors ("GP"), and (iv) American Securities LLC, which provides investment advisory services to each Sponsor.

F3 · ownership.direct: Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of such Reporting Person's pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001589526-23-000138 · wk-form4_1702655779.xml · nonDerivative · entry 3

Radulescu Razvan · CIK 0001884757 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 100,647

F3 · price: This price is a weighted average price resulting from shares sold in multiple transactions on 12/14/23, pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 09/14/2023, at prices ranging from $25.60 to $26.10, inclusive.

SEC source: 0001589526-23-000140 · wk-form4_1702655958.xml · nonDerivative · entry 1

Horlock Phil · CIK 0001579477 · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 539,812

F1 · price: This price is a weighted average price resulting from shares sold in multiple transactions on 12/14/23, pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 09/14/2023, at prices ranging from $25.40 to $26.47, inclusive.

SEC source: 0001589526-23-000136 · wk-form4_1702655682.xml · nonDerivative · entry 1

Scartz Ted · CIK 0001929771 · SVP General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 56,406

F1 · shares: This transaction represents shares withheld on 12/13/2023 to satisfy payroll tax withholding obligations related to restricted stock units that vested on 12/12/2023.

SEC source: 0001589526-23-000138 · wk-form4_1702655779.xml · nonDerivative · entry 2

Radulescu Razvan · CIK 0001884757 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 115,647

F2 · shares: This transaction represents shares withheld on 12/13/2023 to satisfy payroll tax withholding obligations related to restricted stock units that vested on 12/12/2023.

SEC source: 0001589526-23-000138 · wk-form4_1702655779.xml · nonDerivative · entry 1

Radulescu Razvan · CIK 0001884757 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 118,593

F1 · shares: This transaction represents shares withheld on 12/13/2023 to satisfy payroll tax withholding obligations related to restricted stock units that vested on 12/11/2023.

SEC source: 0001589526-23-000134 · wk-form4_1702655552.xml · nonDerivative · entry 1

Smith Britton · CIK 0001980390 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 87,250

F1 · shares: This transaction represents shares withheld on 12/13/2023 to satisfy payroll tax withholding obligations related to restricted stock units that vested on 12/12/2023.

SEC source: 0001589526-23-000126 · wk-form4_1702414208.xml · nonDerivative · entry 1

Scartz Ted · CIK 0001929771 · SVP General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 57,044

F1 · shares: 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.

F2 · shares: The RSUs vest 1/3 on each of the dates December 7, 2024, December 6, 2025, and December 5, 2026 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.

SEC source: 0001589526-23-000128 · wk-form4_1702414299.xml · nonDerivative · entry 1

Radulescu Razvan · CIK 0001884757 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 120,412

F1 · shares: 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.

F2 · shares: The RSUs vest 1/3 on each of the dates December 7, 2024, December 6, 2025, and December 5, 2026 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.

SEC source: 0001589526-23-000132 · wk-form4_1702414481.xml · nonDerivative · entry 1

Horlock Phil · CIK 0001579477 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 569,812

F1 · shares: 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.

F2 · shares: The RSUs vest 1/3 on each of the dates December 7, 2024, December 6, 2025, and December 5, 2026 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.

SEC source: 0001589526-23-000130 · wk-form4_1702414377.xml · nonDerivative · entry 1

Smith Britton · CIK 0001980390 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 89,288

F1 · shares: 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.

F2 · shares: The RSUs vest 1/3 on each of the dates December 7, 2024, December 6, 2025, and December 5, 2026 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.

SEC source: 0001589526-23-000113 · wk-form4_1699394025.xml · nonDerivative · entry 1

Fream Julie A · CIK 0001486034 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,355

F1 · shares: 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.

F2 · shares: The RSUs will vest on April 1, 2024; provided, however, that such RSUs will vest in full upon the occurrence of a "change in control" of the Company or if the reporting person's service terminates due to death, disability or due to completion of the reporting person's term of office as a director. Shares of common stock will be issued in settlement of the RSUs upon the earlier of the recipient's termination of service as a director or a change in control.

SEC source: 0001140361-23-044358 · form4.xml · nonDerivative · entry 1

ASP BB Holdings LLC · CIK 0001676272 · 10% owner

ASP BB Investco LP · CIK 0001676268 · 10% owner

American Securities Partners VII, L.P. · CIK 0001616823 · 10% owner

American Securities Partners VII(B), L.P. · CIK 0001616822 · 10% owner

American Securities Partners VII(C), L.P. · CIK 0001616821 · 10% owner

American Securities Associates VII, LLC · CIK 0001676248 · 10% owner

AMERICAN SECURITIES LLC · CIK 0001475483 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,542,650

F1 · kind: Sold by ASP BB Holdings LLC ("Holdings") in an underwritten registered public offering. In connection with such sale and in respect of certain fees, Holdings also received a payment of $265,125 from the Issuer.

F2 · balance_after: The shares are owned directly by ASP BB Holdings LLC and may also be deemed to be indirectly beneficially owned by (i) ASP BB Investco LP, the sole member of Holdings ("Investco"), (ii) American Securities Partners VII, L.P., American Securities Partners VII(B), L.P. and American Securities Partners VII(C), L.P., the owners of partnership interests in Investco (each, a "Sponsor"), (iii) American Securities Associates VII, LLC, as general partner of the Sponsors ("GP"), and (iv) American Securities LLC, which provides investment advisory services to each Sponsor.

F3 · balance_after: Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of such Reporting Person's pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F2 · ownership.direct: The shares are owned directly by ASP BB Holdings LLC and may also be deemed to be indirectly beneficially owned by (i) ASP BB Investco LP, the sole member of Holdings ("Investco"), (ii) American Securities Partners VII, L.P., American Securities Partners VII(B), L.P. and American Securities Partners VII(C), L.P., the owners of partnership interests in Investco (each, a "Sponsor"), (iii) American Securities Associates VII, LLC, as general partner of the Sponsors ("GP"), and (iv) American Securities LLC, which provides investment advisory services to each Sponsor.

F3 · ownership.direct: Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of such Reporting Person's pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0000899243-23-019236 · doc4.xml · nonDerivative · entry 1

Coliseum Capital Management, LLC · CIK 0001409751 · Director

Shackelton Christopher S · CIK 0001430708 · Director

Coliseum Capital, LLC · CIK 0001409585 · Director

COLISEUM CAPITAL PARTNERS, L.P. · CIK 0001356974 · Director

Gray Adam · CIK 0001454123 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

F1 · kind: Sale of shares pursuant to an underwritten registered public offering. These securities sold were held by CCP (as defined below) and a separate account investment advisory client of CCM (as defined below) (the "Separate Account"). In connection with such sale and in respect of certain fees, CCP and the Separate Account also received payments of $197,618.61 and $62,256.39, respectively, from the Issuer.

F2 · ownership.nature: The Common Stock is 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, and (b) the Separate Account.

F3 · ownership.nature: Christopher Shackelton ("Shackelton") and Adam Gray ("Gray") are managers of and have an ownership interest in each of CCM and CC. Each of Shackelton, Gray, CCP, the Separate Account, CC and CCM disclaims beneficial ownership of these securities except to the extent of that person's pecuniary interest therein.

SEC source: 0001589526-23-000097 · wk-form4_1688583467.xml · nonDerivative · entry 1

Radulescu Razvan · CIK 0001884757 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 97,242

F1 · shares: This transaction represents shares withheld to satisfy payroll tax withholding obligations related to restricted stock units that vested on 7/2/2023.

SEC source: 0001589526-23-000092 · wk-form4_1688583252.xml · nonDerivative · entry 1

Scartz Ted · CIK 0001929771 · SVP General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,935

F1 · shares: This transaction represents shares withheld to satisfy payroll tax withholding obligations related to restricted stock units that vested on 7/1/2023.

SEC source: 0001589526-23-000094 · wk-form4_1688583326.xml · nonDerivative · entry 1

Smith Britton · CIK 0001980390 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 66,118

F1 · shares: This transaction represents shares withheld to satisfy payroll tax withholding obligations related to restricted stock units that vested on 7/1/2023.

SEC source: 0001140361-23-029843 · form4.xml · nonDerivative · entry 1

ASP BB Holdings LLC · CIK 0001676272 · 10% owner

ASP BB Investco LP · CIK 0001676268 · 10% owner

American Securities Partners VII, L.P. · CIK 0001616823 · 10% owner

American Securities Partners VII(B), L.P. · CIK 0001616822 · 10% owner

American Securities Partners VII(C), L.P. · CIK 0001616821 · 10% owner

American Securities Associates VII, LLC · CIK 0001676248 · 10% owner

AMERICAN SECURITIES LLC · CIK 0001475483 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,805,150

F1 · balance_after: The shares are owned directly by ASP BB Holdings LLC and may also be deemed to be indirectly beneficially owned by (i) ASP BB Investco LP, the sole member of ASP BB Holdings LLC ("Investco"), (ii) American Securities Partners VII, L.P., American Securities Partners VII(B), L.P. and American Securities Partners VII(C), L.P., the owners of partnership interests in Investco (each, a "Sponsor"), (iii) American Securities Associates VII, LLC, as general partner of the Sponsors ("GP"), and (iv) American Securities LLC, which provides investment advisory services to each Sponsor.

F2 · balance_after: Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of such Reporting Person's pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F1 · ownership.direct: The shares are owned directly by ASP BB Holdings LLC and may also be deemed to be indirectly beneficially owned by (i) ASP BB Investco LP, the sole member of ASP BB Holdings LLC ("Investco"), (ii) American Securities Partners VII, L.P., American Securities Partners VII(B), L.P. and American Securities Partners VII(C), L.P., the owners of partnership interests in Investco (each, a "Sponsor"), (iii) American Securities Associates VII, LLC, as general partner of the Sponsors ("GP"), and (iv) American Securities LLC, which provides investment advisory services to each Sponsor.

F2 · ownership.direct: Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of such Reporting Person's pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0000899243-23-015522 · doc4.xml · nonDerivative · entry 1

Coliseum Capital Management, LLC · CIK 0001409751 · Director · 10% owner

Shackelton Christopher S · CIK 0001430708 · Director · 10% owner

Coliseum Capital, LLC · CIK 0001409585 · Director · 10% owner

COLISEUM CAPITAL PARTNERS, L.P. · CIK 0001356974 · Director · 10% owner

Gray Adam · CIK 0001454123 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,237,500

F1 · kind: Sale of shares pursuant to an underwritten registered public offering. These securities sold were held by CCP (as defined below) and a separate account investment advisory client of CCM (as defined below) (the "Separate Account").

F2 · ownership.nature: The Common Stock is 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, and (b) the Separate Account.

F3 · ownership.nature: Christopher Shackelton ("Shackelton") and Adam Gray ("Gray") are managers of and have an ownership interest in each of CCM and CC. Each of Shackelton, Gray, CCP, the Separate Account, CC and CCM disclaims beneficial ownership of these securities except to the extent of that person's pecuniary interest therein.

F4 · ownership.nature: Following the transactions reported herein, CCP and the Separate Account directly owned 941,041 and 296,459 shares of Common Stock, respectively.

SEC source: 0001589526-23-000076 · wk-form4_1685997899.xml · nonDerivative · entry 1

SCHUMACHER ALAN H · CIK 0001264230 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,615

F1 · shares: 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.

F2 · shares: The RSUs will vest on June 30, 2023; provided, however, that such RSUs will vest in full upon the occurrence of a "change in control" of Blue Bird Corporation or if the reporting person's service terminates due to death, disability or due to completion of the reporting person's term of office as a director. Shares of common stock will be issued in settlement of the RSUs upon the earlier of the recipient's termination of service as a director or a change in control.

SEC source: 0001589526-23-000078 · wk-form4_1685998078.xml · nonDerivative · entry 1

BEDI GURMINDER S · CIK 0001198462 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,615

F1 · kind: 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.

F2 · kind: The RSUs will vest on April 1, 2024; provided, however, that such RSUs will vest in full upon the occurrence of a "change in control" of Blue Bird Corporation or if the reporting person's service terminates due to death, disability or due to completion of the reporting person's term of office as a director. Shares of common stock will be issued in settlement of the RSUs upon the earlier of the recipient's termination of service as a director or a change in control.

SEC source: 0001589526-23-000082 · wk-form4_1685998291.xml · nonDerivative · entry 1

Newman Simon J · CIK 0001980199 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,984

F1 · shares: 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.

F2 · shares: The RSUs will vest on April 1, 2024; provided, however, that such RSUs will vest in full upon the occurrence of a "change in control" of Blue Bird Corporation or if the reporting person's service terminates due to death, disability or due to completion of the reporting person's term of office as a director. Shares of common stock will be issued in settlement of the RSUs upon the earlier of the recipient's termination of service as a director or a change in control.

SEC source: 0001589526-23-000080 · wk-form4_1685998195.xml · nonDerivative · entry 1

Grimm Douglas J. · CIK 0001626219 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,896

F1 · shares: 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.

F2 · shares: The RSUs will vest on April 1, 2024; provided, however, that such RSUs will vest in full upon the occurrence of a "change in control" of Blue Bird Corporation or if the reporting person's service terminates due to death, disability or due to completion of the reporting person's term of office as a director. Shares of common stock will be issued in settlement of the RSUs upon the earlier of the recipient's termination of service as a director or a change in control.

SEC source: 0001589526-23-000090 · wk-form4_1686322390.xml · nonDerivative · entry 1

Blaufuss Mark · CIK 0001625944 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,984

F1 · shares: 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.

F2 · shares: The RSUs will vest on April 1, 2024; provided, however, that such RSUs will vest in full upon the occurrence of a "change in control" of Blue Bird Corporation or if the reporting person's service terminates due to death, disability or due to completion of the reporting person's term of office as a director. Shares of common stock will be issued in settlement of the RSUs upon the earlier of the recipient's termination of service as a director or a change in control.

SEC source: 0001589526-23-000064 · wk-form4_1685736835.xml · nonDerivative · entry 1

Scartz Ted · CIK 0001929771 · SVP General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,495

F1 · shares: 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.

F2 · shares: The RSUs will vest on July 1, 2025 or upon a change in control of Blue Bird Corporation, if earlier.

SEC source: 0001589526-23-000066 · wk-form4_1685736929.xml · nonDerivative · entry 1

Radulescu Razvan · CIK 0001884757 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 100,879

F1 · shares: 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.

F2 · shares: The RSUs will vest on July 1, 2025 or upon a change in control of Blue Bird Corporation, if earlier.

SEC source: 0001589526-23-000068 · wk-form4_1685737033.xml · nonDerivative · entry 1

Horlock Phil · CIK 0001579477 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 488,718

F1 · shares: 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.

F2 · shares: The RSUs will vest on July 1, 2025 or upon (i) a change in control of Blue Bird Corporation or (ii) termination of employment (except for cause), if earlier.

SEC source: 0001589526-23-000086 · wk-form4_1686172643.xml · nonDerivative · entry 1

Smith Britton · CIK 0001980390 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,360

F1 · shares: 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.

F2 · shares: The RSUs will vest on July 1, 2025 or upon a change in control of Blue Bird Corporation, if earlier.