Does Troy Rillo have any related-party ties to MCGA’s sponsor?

Yes. The filing notes that Troy Rillo is a partner of Yorkville Advisors, an affiliate of Yorkville Acquisition Sponsor, LLC, the company’s sponsor. Because of this affiliation, he may be deemed to have an indirect interest in previously disclosed arrangements between the company, the sponsor, and its affiliates.

Yorkville Acquisition names Troy Rillo CEO

Yorkville Acquisition Corp. reports that Kevin McGurn resigned as Chief Executive Officer and director effective April 22, 2026.

Filing Impact

(High)

Filing Sentiment

(Neutral)How Sentiment works

Sentiment and the balance of points

Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.

How Sentiment works How the balance works

Form Type

8-K

Rhea-AI Filing Summary

Yorkville Acquisition Corp. reports that Kevin McGurn resigned as Chief Executive Officer and director effective April 22, 2026. The company states his departure was not due to any dispute or disagreement regarding operations, policies, or practices.

The board appointed Troy Rillo, age 57, as Chief Executive Officer effective immediately, and he will also continue serving as Chief Financial Officer. The filing notes he has extensive experience in corporate finance, securities law, and investment management and holds multiple leadership roles at Yorkville-affiliated entities.

The company states there are no family relationships, special arrangements, or new compensatory plans tied to his appointment, though Rillo may be deemed to have an indirect interest in existing arrangements between the company and its sponsor and affiliates previously described in SEC filings.

Insights

Yorkville replaces its CEO, elevating current CFO Troy Rillo.

Yorkville Acquisition Corp. discloses an immediate leadership change as Kevin McGurn resigns as CEO and director without any stated disagreement with the company. The board appoints existing CFO Troy Rillo to also serve as CEO, concentrating day-to-day financial and strategic oversight in one executive.

Rillo brings a long track record at Yorkville Advisors and affiliated entities, plus prior law firm partnership experience in corporate finance and securities. The filing clarifies there are no new compensation arrangements tied to his promotion, though he may have an indirect interest in previously disclosed sponsor-related arrangements through his partnership at Yorkville Advisors.

This looks like an internal succession rather than an external shake-up, with continuity from an existing officer who already knows the company and sponsor structure. Future company disclosures may provide additional context on how this combined CEO/CFO structure influences transaction activity and strategic decisions.

8-K Event Classification

Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers

1 item

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers Governance

Key personnel changes including departures, elections, or appointments of directors and executive officers.

Key Figures

Age of new CEO: 57 years Commission file number: 001-42720 Warrant exercise price: $11.50 per share +1 more

4 metrics

Age of new CEO 57 years Age of Troy Rillo at time of appointment

Commission file number 001-42720 SEC registration reference for Yorkville Acquisition Corp.

Warrant exercise price $11.50 per share Exercise price of Nasdaq-listed warrants MCGAW

Par value per Class A share $0.0001 Par value of Class A ordinary shares listed as MCGA

Key Terms

Emerging growth company, Chief Executive Officer, Regulation S-K Item 404(a), SEC registered broker-dealer, +1 more

5 terms

Emerging growth company regulatory

"405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 ... Emerging growth company x"

An emerging growth company is a recently public or smaller public firm that qualifies for temporary, lighter regulatory and disclosure rules to reduce the cost and effort of being public. For investors, it means the company may provide less historical financial detail and face fewer reporting requirements than larger firms, so it can grow more quickly but also carries higher uncertainty—like buying a promising early-stage product with fewer user reviews.

Chief Executive Officer financial

"his resignation as Chief Executive Officer and as a director of the Company, effective immediately."

A chief executive officer (CEO) is the top leader of a company, responsible for making major decisions, setting goals, and guiding the organization’s overall direction. Think of the CEO as the captain of a ship, steering it toward success. Investors pay close attention to the CEO because their leadership and strategy can significantly influence the company's performance and future growth.

Regulation S-K Item 404(a) regulatory

"there are no transactions involving Mr. Rillo that would require disclosure under Item 404(a) of Regulation S-K."

SEC registered broker-dealer regulatory

"Co-Chief Executive Officer of Yorkville Securities LLC, an SEC registered broker-dealer and member of FINRA"

exchange-traded funds financial

"investment adviser focused on branded investment products, including separately managed accounts and exchange-traded funds."

An exchange-traded fund is an investment product that bundles many stocks, bonds, or other assets into a single package that trades on a stock exchange like an individual share; think of it as a ready-made basket you can buy or sell throughout the trading day. For investors it matters because ETFs provide easy access to broad exposure, typically lower costs and built-in diversification, and the ability to adjust positions quickly without buying each asset separately.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What leadership change did Yorkville Acquisition Corp. (MCGA) announce?

Yorkville Acquisition Corp. announced that Kevin McGurn resigned as Chief Executive Officer and director, effective April 22, 2026. The board simultaneously appointed existing Chief Financial Officer Troy Rillo as the new Chief Executive Officer, while he continues in his CFO role for the company.

Did Kevin McGurn resign from MCGA due to a disagreement with the company?

The filing states that Kevin McGurn’s resignation as CEO and director was not the result of any dispute or disagreement with Yorkville Acquisition Corp. This includes matters related to the company’s operations, policies, practices, or any other corporate issues according to the disclosure.

Who is Troy Rillo, the new CEO of Yorkville Acquisition Corp. (MCGA)?

Troy Rillo is Yorkville Acquisition Corp.’s new Chief Executive Officer and continuing Chief Financial Officer. Age 57, he has been CFO since August 2025 and is a partner at Yorkville Advisors, with extensive experience in corporate finance, securities law, investment management, and leadership roles at affiliated Yorkville entities.

Were any new compensation plans or contracts created for MCGA’s new CEO?

The company states there is no material plan, contract, or arrangement entered into or materially amended in connection with Troy Rillo’s appointment as CEO. It also discloses that no grant or award was made to him in connection with becoming Chief Executive Officer.

Are there any family relationships or special arrangements behind Troy Rillo’s appointment at MCGA?

The filing states there are no family relationships between Troy Rillo and any director or executive officer of Yorkville Acquisition Corp. It also notes there is no arrangement or understanding with any other person pursuant to which he was selected as Chief Executive Officer by the board.

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

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Accepted by SEC EDGAR 04/24/2026 - 04:00 PM

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of report (Date of earliest event reported): April 22, 2026

Yorkville Acquisition Corp.

(Exact name of registrant as specified in its charter)

Cayman Islands	001-42720	98-1850073
(State or other jurisdiction of incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

1012 Springfield Avenue
Mountainside, NJ		07092
(Address of principal executive offices)		(Zip Code)

(201) 985-8300

(Registrant’s telephone number, including area code)

N/A

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
¨	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
¨	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
¨	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Units, each consisting of one Class A ordinary share and one-third of one redeemable warrant	MCGAU	The Nasdaq Stock Market LLC
Class A ordinary shares, par value $0.0001 per share	MCGA	The Nasdaq Stock Market LLC
Warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50	MCGAW	The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company x

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.¨

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

Departure of Director and Executive Officer

On April 22, 2026, Mr. Kevin McGurn notified the board of directors of Yorkville Acquisition Corp. (the “Company”) of his resignation as Chief Executive Officer and as a director of the Company, effective immediately. Mr. McGurn’s resignation was not the result of any dispute or disagreement with the Company on any matter, whether related to the Company’s operations, policies, practices or otherwise. The Company expresses its gratitude to Mr. McGurn for his dedicated service.

Appointment of New Executive Officer

On April 22, 2026, Mr. Troy Rillo was appointed as Chief Executive Officer of the Company by the Company’s board of directors, effective immediately. Mr. Rillo will continue to serve as Chief Financial Officer of the Company.

Mr. Rillo, 57, has served as Chief Financial Officer of the Company since August 2025. Mr. Rillo is a partner with Yorkville Advisors where, since 2004, he has been instrumental in the firm’s growth and strategic direction. Mr. Rillo is an accomplished business executive and attorney with extensive experience in corporate finance, securities law, and investment management. Mr. Rillo also currently serves as Co-Chief Executive Officer of Yorkville Securities LLC, an SEC registered broker-dealer and member of FINRA, and President and Chief Executive Officer, and member of the Board of Managers, of Yorkville America, LLC, an affiliated SEC-registered investment adviser focused on branded investment products, including separately managed accounts and exchange-traded funds. Additionally, Mr. Rillo has served as the Chief Financial Officer at Texas Ventures Acquisition III Corp since September 2025, and as the Chief Financial Officer of Blue Water Acquisition Corp. III since November 2025. Prior to joining Yorkville Advisors, Mr. Rillo was a corporate and securities partner at K&L Gates LLP, a leading international law firm, where he advised public and private companies on capital-raising transactions, mergers and acquisitions, and securities compliance. Mr. Rillo is widely recognized as an authority in corporate and securities law and is a frequent speaker on related topics. He earned both his J.D. and B.S. in Finance, magna cum laude, from the University of Florida. While in law school, he served as a member of the Florida Law Review and was elected to the Order of the Coif. He is admitted to practice law in New Jersey and Florida.

No family relationships exist between Mr. Rillo and any of the Company’s directors or other executive officers. There is no arrangement or understanding between Mr. Rillo and any other person pursuant to which he was selected as Chief Executive Officer. There is no material plan, contract or arrangement (whether or not written) to which Mr. Rillo is a party or in which he participates that was entered into, or materially amended, in connection with his appointment as Chief Executive Officer, and no grant or award (or modification thereto) was made to Mr. Rillo under any such plan, contract or arrangement in connection with his appointment. Mr. Rillo is a Partner of Yorkville Advisors, an affiliate of Yorkville Acquisition Sponsor, LLC, the Company's sponsor (the “Sponsor”). As a result, Mr. Rillo may be deemed to have an indirect interest in the arrangements between the Company and the Sponsor (and its affiliates) that have been previously described in the Company's filings with the Securities and Exchange Commission. Other than as previously disclosed or described herein, there are no transactions involving Mr. Rillo that would require disclosure under Item 404(a) of Regulation S-K.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

YORKVILLE ACQUISITION CORP.

By:	/s/ Troy Rillo
	Name: Troy Rillo
	Title: Chief Executive Officer and Chief Financial Officer

Date: April 24, 2026

Source: View Original Filing on SEC EDGAR

Filing Exhibits & Attachments

4 documents

Yorkville Acquisition names Troy Rillo CEO

Rhea-AI Filing Summary