Company: HYAC-WT
Filing Date: 2025-07-15
Form Type: DEFA14A
Source: 0001104659-25-068092
Chunk: 4

Company: Haymaker Acquisition Corp. 4
Filing Date: 2025-07-15
Form: DEFA14A
Chunk 4
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 of a Direct Financial Obligation or an                    
 Obligation under an Off-Balance Sheet Arrangement of a Registrant. |

The information disclosed under Item 1.01 of this Current Report is
incorporated by reference into this Item 2.03 to the extent required.

Additional Information and Where to Find It

On July 1, 2025, the Company filed a definitive proxy statement (the
“Proxy Statement”) with the U.S. Securities and Exchange Commission (the “SEC”) in connection with
its solicitation of proxies for the Shareholder Meeting. Investors and security holders are able to obtain free copies of the Proxy Statement,
related supplements and all other relevant documents filed or that will be filed with the SEC by the Company through the website maintained
by the SEC at www.sec.gov. In addition, the documents filed by the Company may be obtained free of charge by written request to
Haymaker Acquisition Corp. 4, 501 Madison Avenue, Floor 5, New York, NY 10022 or by telephone at (212) 616-9600.

If you have questions about the proposals to be presented at the Annual
Meeting, you should contact our proxy solicitation agent at the following address and telephone number: Sodali & Co. 430 Park Avenue,
14th Floor New York, New York 10022 Stockholders Call Toll-Free in North America: (800) 662-5200 Outside of North America Call Collect:
(203) 658-94000 E-mail: HYAC@investor.sodali.com.

BEFORE MAKING ANY VOTING OR INVESTMENT DECISION, INVESTORS AND SECURITYHOLDERS
OF THE COMPANY ARE URGED TO READ THE PROXY STATEMENT AND ALL OTHER RELEVANT DOCUMENTS FILED OR THAT WILL BE FILED WITH THE SEC IN CONNECTION
WITH THE EXTENSION AS THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE MATTERS TO BE VOTED ON AT THE SHAREHOLDER
MEETING.

Participants in the Solicitation

The Company and its directors and executive officers and other persons
may be deemed to be participants in the solicitation of proxies from the Company’s shareholders in respect of the matters to be
voted on at the Shareholder Meeting. Information regarding the Company’s directors and executive officers and a description of their
interests in the Company and the matters to be voted on at the Shareholder Meeting are set forth in the Proxy Statement.

No Offer or Solic