[Form 4] Blue Bird Corp Insider Trading Activity

Penn Kevin S. reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Penn Kevin S. reported acquisition or exercise transactions in this Form 4 filing.

Blue Bird Corp director Kevin S. Penn received a grant of 2,297 restricted stock units (RSUs), each representing one share of common stock. The award was granted at no cash cost and increases his direct holdings to 6,396 shares after the transaction.

The RSUs are scheduled to vest on March 31, 2027, with accelerated vesting if there is a change in control of the company or if his service ends due to death, disability, or completion of his term as director. Shares of common stock will be delivered when the RSUs vest and certain service or ownership conditions are met.

Insider Trade Summary

Grant/Award: 2,297 shares

Grant/Award 1 txn

Insider Penn Kevin S.

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock, par value $0.0001 per share	2,297	$0.00	$0.00

Holdings After Transaction: Common Stock, par value $0.0001 per share — 6,396 shares (Direct)

Footnotes (2)

1. F1. 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.
2. F2. 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.

Key Figures

RSUs granted: 2,297 units Holdings after transaction: 6,396 shares RSU vesting date: March 31, 2027

3 metrics

RSUs granted 2,297 units Restricted stock units awarded to director Kevin S. Penn

Holdings after transaction 6,396 shares Total direct Blue Bird common stock reported after grant

RSU vesting date March 31, 2027 Scheduled vesting date for granted RSUs, subject to conditions

Key Terms

restricted stock units ("RSUs"), change in control, minimum stock ownership guidelines

3 terms

restricted stock units ("RSUs") financial

"The award represents a grant of restricted stock units ("RSUs")."

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

change in control financial

"will vest in full upon the occurrence of a "change in control" of the Company"

A "change in control" occurs when the ownership or management of a company shifts significantly, such as through a merger, acquisition, or sale of a large part of its assets. This change can impact how the company is run and may influence its future direction. For investors, it matters because it can affect the company's stability, strategy, and value, often signaling potential changes in investment risk or opportunity.

minimum stock ownership guidelines financial

"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"

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/02/2026 - 09:56 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Penn Kevin S.

(Last) (First) (Middle)

3920 ARKWRIGHT ROAD, SUITE 200

(Street)

MACON GEORGIA 31210

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Blue Bird Corp [ BLBD ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, par value $0.0001 per share	04/01/2026		A		2,297(1)(2)	A	$0	6,396	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

2. 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.

Remarks:

	/s/ Matthew Meziere as attorney-in-fact	04/02/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)