Company: MCGAU
Filing Date: 2025-06-06
Form Type: S-1/A
Source: 0001213900-25-051715
Chunk: 238

Company: Yorkville Acquisition Corp.
Filing Date: 2025-06-06
Form: S-1/A
Chunk 238
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 and officers’ liability insurance that insures our officers and directors against the cost of defense, settlement or payment of a judgment in some circumstances and insures us against our obligations to indemnify our officers and directors. We believe that these provisions, the insurance and the indemnity agreements are necessary to attract and retain talented and experienced directors and officers. Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers or persons controlling us pursuant to the foregoing provisions, we have been informed that in the opinion of the SEC such indemnification is against public policy as expressed in the Securities Act and is therefore unenforceable. 156

PRINCIPAL SHAREHOLDERS The following table sets forth information regarding the beneficial ownership of our ordinary shares as of the date of this prospectus, and as adjusted to reflect the sale of our ordinary shares included in the units offered by this prospectus and in the private placement, and assuming no purchase of units in this offering, by: •each person known by us to be the beneficial owner of more than 5% of our issued and outstanding ordinary shares; •each of our officers, directors and director nominees that beneficially own ordinary shares; and •all our officers, directors and director nominees as a group. Unless otherwise indicated, we believe that all persons named in the table have sole voting and investment power with respect to all ordinary shares beneficially owned by them. The following table does not reflect record or beneficial ownership of the placement warrants as these warrants are not exercisable within 60 days of the date of this prospectus. The below assumes that the underwriters do not exercise their over -allotmentoption, that our sponsor forfeits 750,000 founder shares and purchases 325,500 placement units (comprised of 325,500 placement shares and 108,500 placement warrants), that 199,500 representative shares are issued to Clear Street, and that there are 20,525,000 ordinary shares issued and outstanding after this offering and the private placement.

| Name and Address of Beneficial Owner(4)                |     | Prior to the Offering(1) |     |     |           |     | Following the Offering(2)(3) |     |      |   |
| Number of                                              
 shares                                                 |     |            Percentage of 
              outstanding 
                   shares |     |     | Number of 
 shares    |     |                Percentage of 
                  outstanding 
                       shares |     |      |   |
| Kevin McGurn