BLBD · Blue Bird Corp

The price reported in Column 4 is a weighted average price at which shares were purchased in several open market transactions on May 19, 2026, at prices ranging from $65.05 to $65.11, 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 purchased at each separate price within the range set forth in this footnote.

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.

The RSUs will vest on March 31, 2027; 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 vesting and the earlier of the reporting person's compliance with the Company's applicable minimum stock ownership guidelines, termination of service as a director or a change in control event.

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.

The RSUs will vest on March 31, 2027; 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 vesting and the earlier of the reporting person's compliance with the Company's applicable minimum stock ownership guidelines, termination of service as a director or a change in control event.

The reported securities were acquired by Groupe Autobus Girardin Ltee, a corporation existing under the federal laws of Canada ("GAG"), in connection with the acquisition by the issuer of the remaining interest in its Micro Bird joint venture, as more fully described in the issuer's current report on Form 8-K filed with the Securities & Exchange Commission on April 2, 2026. The remaining interest in the Micro Bird joint venture was acquired from the sellers partly for $63,021,287 in cash and partly for (a) 2,702,180 Exchangeable Shares of MB Exchangeco Inc., a corporation existing under the laws of the Province of Ontario and a subsidiary of the issuer, and (b) 1 share of Special Voting Preferred Stock of the issuer.

The Exchangeable Shares are immediately exchangeable for shares of issuer's common stock, generally on a 1-for-1 basis, and while they do not expire, issuer, at its sole discretion, may force an exchange of any outstanding shares for shares of issuer's common stock after five years.

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.

The RSUs will vest on March 31, 2027; 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 vesting and the earlier of the reporting person's compliance with the Company's applicable minimum stock ownership guidelines, termination of service as a director or a change in control event.

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.

The RSUs will vest on March 31, 2027; 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 vesting and the earlier of the reporting person's compliance with the Company's applicable minimum stock ownership guidelines, termination of service as a director or a change in control event.

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.

The RSUs will vest on March 31, 2027; 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 vesting and the earlier of the reporting person's compliance with the Company's applicable minimum stock ownership guidelines, termination of service as a director or a change in control event.

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.

The RSUs will vest on March 31, 2027; 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 vesting and the earlier of the reporting person's compliance with the Company's applicable minimum stock ownership guidelines, termination of service as a director or a change in control event.

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.

The RSUs will vest on March 31, 2027; 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 vesting and the earlier of the reporting person's compliance with the Company's applicable minimum stock ownership guidelines, termination of service as a director or a change in control event.

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.

The RSUs will vest on March 31, 2027; 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 vesting and the earlier of the reporting person's compliance with the Company's applicable minimum stock ownership guidelines, termination of service as a director or a change in control event.

The reported securities were acquired by Groupe Autobus Girardin Ltee, a corporation existing under the federal laws of Canada ("GAG"), in connection with the acquisition by the issuer of the remaining interest in its Micro Bird joint venture, as more fully described in the issuer's current report on Form 8-K filed with the Securities & Exchange Commission on April 2, 2026. The remaining interest in the Micro Bird joint venture was acquired from the sellers partly for $63,021,287 in cash and partly for (a) 2,702,180 Exchangeable Shares of MB Exchangeco Inc., a corporation existing under the laws of the Province of Ontario and a subsidiary of the issuer, and (b) 1 share of Special Voting Preferred Stock of the issuer.

The Special Voting Preferred Stock share entitles the holder thereof to vote with the issuer's common stockholders and to cast the number of votes equal to the number of shares of the issuer's common stock that the Exchangeable Shares are exchangeable for. The reporting person may be deemed to have indirect beneficial ownership of such securities by virtue of his roles as a GAG shareholder, GAG manager and member of the GAG board of directors. The reporting person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein.

The price reported in Column 4 is a weighted average price resulting from shares sold in multiple transactions on March 4, 2026, at prices ranging from $58.48 to $58.59, 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 range set forth in this footnote.

The price reported in Column 4 is a weighted average price resulting from shares sold in multiple transactions on December 17, 2025, pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2025, at prices ranging from $51.55 to $51.64, 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.

The final tranche of the stock option's three tranches vested on December 12, 2025.

This transaction represents shares withheld to satisfy payroll tax withholding obligations related to restricted stock units that vested on December 12, 2025.

This transaction represents shares withheld to satisfy payroll tax withholding obligations related to restricted stock units that vested on December 12, 2025.

This transaction represents shares withheld to satisfy payroll tax withholding obligations related to restricted stock units that vested on December 12, 2025.

The price reported in Column 4 is a weighted average price resulting from shares sold in multiple transactions on December 10, 2025, pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2025, at prices ranging from $50.01 to $50.99, 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.

This transaction represents shares withheld to satisfy payroll tax withholding obligations related to restricted stock units that vested on December 6, 2025.

This transaction represents shares withheld to satisfy payroll tax withholding obligations related to restricted stock units that vested on December 6, 2025.

This transaction represents shares withheld to satisfy payroll tax withholding obligations related to restricted stock units that vested on December 6, 2025.

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.

The RSUs vest in three approximately equal tranches on each of December 1, 2026, December 1, 2027, and December 1, 2028.

This transaction represents shares withheld to satisfy payroll tax withholding obligations related to restricted stock units that vested on December 2, 2025.

This transaction represents shares withheld to satisfy payroll tax withholding obligations related to restricted stock units that vested on December 2, 2025.

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.

The RSUs vest on December 1, 2028, subject to downward adjustment based upon the actual percentage payout of the management performance bonus award for the Company's fiscal year ending September 30, 2028.

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.

The RSUs vest on December 1, 2028, subject to downward adjustment based upon the actual percentage payout of the management performance bonus award for the Company's fiscal year ending September 30, 2028.

This transaction represents shares withheld to satisfy payroll tax withholding obligations related to restricted stock units that vested on December 2, 2025.

This transaction represents shares withheld to satisfy payroll tax withholding obligations related to restricted stock units that vested on December 2, 2025.

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.

The RSUs vest in three approximately equal tranches on each of December 1, 2026, December 1, 2027, and December 1, 2028.

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.

The RSUs vest on December 1, 2028, subject to downward adjustment based upon the actual percentage payout of the management performance bonus award for the Company's fiscal year ending September 30, 2028.

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.

The RSUs vest in three approximately equal tranches on each of December 1, 2026, December 1, 2027, and December 1, 2028.

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.

The RSUs vest on December 1, 2028, subject to downward adjustment based upon the actual percentage payout of the management performance bonus award for the Company's fiscal year ending September 30, 2028.

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.

The RSUs vest in three approximately equal tranches on each of December 1, 2026, December 1, 2027, and December 1, 2028.

Award represents stock option grants that were originally scheduled to vest over a three year period in equal installments (12/11/2020, 12/11/2021 and 12/11/2022), but for which vesting of the last two installments was accelerated to 10/31/2021 upon Mr. Horlock's initial retirement.

Award represents stock option grants that were originally scheduled to vest over a three year period in equal installments (12/11/2020, 12/11/2021 and 12/11/2022), but for which vesting of the last two installments was accelerated to 10/31/2021 upon Mr. Horlock's initial retirement.