13D Filing: Coliseum Capital and Blue Bird Corp (BLBD)

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Ownership Summary Table

Name Sole Voting Power Shared Voting Power Sole Dispositive Power Shared Dispositive Power Aggregate Amount Owned Power Percent of Class
Coliseum Capital Management 0 1,861,377 0 1,861,377 1,861,377 7.7%
Coliseum Capital 0 1,538,408 0 1,538,408 1,538,408 6.3%
Coliseum School Bus Holdings 0 862,811 0 862,811 862,811 3.5%
Coliseum Capital Partners 0 1,363,574 0 1,363,574 1,363,574 5.6%
Coliseum Capital Partners II 0 174,834 0 174,834 174,834 0.7%
Adam Gray 0 1,861,377 0 1,861,377 1,861,377 7.7%
Christopher Shackelton 0 1,861,377 0 1,861,377 1,861,377 7.7%

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE
13D/A

Under the Securities Exchange Act of 1934*

(Amendment No. 4)

Blue Bird
Corporation

(Name of Issuer)

Common Stock, par value $0.0001 per share (Common Shares)

(Title of Class of Securities)

095306106

(CUSIP Number)

Christopher Shackelton/Adam Gray

105 Rowayton Ave.

Rowayton, CT 06853

(Name,
Address and Telephone Number of Person Authorized to Receive Notices and Communications)

June 16, 2017

(Date of Event Which Requires Filing of this Statement)

If the filing person has
previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of sections 240.13d-1(e), 240.13d-1(f) or 140.13d-1(g), check the following box.  ☐

* The remainder of this cover page shall be filled out for a reporting persons initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information
which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be filed for the purpose of Section 18 of the Securities
Exchange Act of 1934 (Act) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

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