Offerings - Offering: 1	May 06, 2026 USD ($) shares
Offering:
Fee Previously Paid	false
Other Rule	true
Security Type	Equity
Security Class Title	Common Stock, $0.0001 par value per share
Amount Registered \| shares	900,000
Proposed Maximum Offering Price per Unit	63.49
Maximum Aggregate Offering Price	$ 57,141,000
Fee Rate	0.01381%
Amount of Registration Fee	$ 7,891.17
Offering Note	(1)This Registration Statement covers an additional 900,000 shares of common stock, par value $0.0001 per share (the “Common Stock”) of Blue Bird Corporation (the “Registrant”), being newly registered hereunder and authorized for issuance under the Blue Bird Corporation Amended and Restated 2015 Omnibus Equity Incentive Plan, effective November 21, 2025 (the “Plan”). Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the “Securities Act”), this Registration Statement also covers an indeterminate number of additional shares that may be offered or sold under the Plan by reason of any substitutions or adjustments of shares to account for any change in capitalization, including any stock dividend, stock split, reverse split, split up, spin-off, recapitalization, or other distribution of stock or property of the Company, combination or exchange of shares of common stock, dividend in kind, or other like change in capital structure. (2)Estimated solely for the purpose of calculating the amount of the registration fee pursuant to Rule 457(c) and Rule 457(h) promulgated under the Securities Act. The offering price per share and the aggregate offering price are based on the average of the high and the low prices of the Registrant’s Common Stock as reported on the NASDAQ Global Market on May 5, 2026. (3)There are no fee offsets.

Offerings - Offering: 1

May 06, 2026

USD ($)

Offering:

false

true

Equity

Common Stock, $0.0001 par value per share

Amount Registered | shares

900,000

Proposed Maximum Offering Price per Unit

63.49

Maximum Aggregate Offering Price

$ 57,141,000

Fee Rate

0.01381%

Amount of Registration Fee

$ 7,891.17

Offering Note

(1)This Registration Statement covers an additional 900,000 shares of common stock, par value $0.0001 per share (the “Common Stock”) of Blue Bird Corporation (the “Registrant”), being newly registered hereunder and authorized for issuance under the Blue Bird Corporation Amended and Restated 2015 Omnibus Equity Incentive Plan, effective November 21, 2025 (the “Plan”). Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the “Securities Act”), this Registration Statement also covers an indeterminate number of additional shares that may be offered or sold under the Plan by reason of any substitutions or adjustments of shares to account for any change in capitalization, including any stock dividend, stock split, reverse split, split up, spin-off, recapitalization, or other distribution of stock or property of the Company, combination or exchange of shares of common stock, dividend in kind, or other like change in capital structure.

(2)Estimated solely for the purpose of calculating the amount of the registration fee pursuant to Rule 457(c) and Rule 457(h) promulgated under the Securities Act. The offering price per share and the aggregate offering price are based on the average of the high and the low prices of the Registrant’s Common Stock as reported on the NASDAQ Global Market on May 5, 2026.

(3)There are no fee offsets.