Company: MCGAU
Filing Date: 2025-08-26
Form Type: 425
Source: 0001104659-25-083156
Chunk: 16

Company: Yorkville Acquisition Corp.
Filing Date: 2025-08-26
Form: 425
Chunk 16
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 in the Registration Rights Agreement) are entitled under the Registration Rights Agreement to make a written demand
for registration under the Securities Act of all or part of their Registrable Securities, up to a total of three such demands or no more
than an aggregate of two demands in any twelve (12)-month period. In addition, pursuant to the terms of the Registration Rights Agreement
and subject to certain requirements and customary conditions, such Holders may demand at any time or from time to time, that the Company
file a registration statement on Form S-3 (or any similar short-form registration which may be available) to register the resale
of the registrable securities of the Company held by such Holders. The Registration Rights Agreement will also provide such Holders with
“piggy-back” registration rights, subject to certain requirements and customary conditions.

Under the Registration Rights Agreement, the Company
will indemnify such holders of Registrable Securities and its officers and directors and each person who controls such holder (within
the meaning of the Securities Act) against any losses, claims, damages, liabilities and expenses (including attorneys’ fees) caused
by any untrue or alleged untrue statement of material fact contained in any Registration Statement, Proxy Statement/Prospectus or any
amendment thereof or supplement thereto or any omission or alleged omission of a material fact required to be stated therein or necessary
to make the statements therein not misleading, except insofar as the same are caused by or contained in any information furnished in writing
to the Company by such holder expressly for use therein.

The foregoing description of the Registration Rights
Agreement and the Transactions contemplated by the Registration Rights Agreement is not complete and is subject to, and qualified in its
entirety by reference to, the agreed upon form of Registration Rights Agreement, a copy of which is filed with this Current Report on
Form 8-K as Exhibit 10.3 to this Current Report, and the terms of which are incorporated into this Current Report by
reference.

Lock-Up Agreement

In connection with the Business Combination Agreement, the Company, the Sellers, the Sponsor, the Post-Closing Officers and the Post-Closing Board (the “ Lock-Up Parties”) will enter into the Lock-Up Agreement. The Lock-Up Agreement will provide that, subject to certain exceptions, each of the Lock-Up Parties agrees that without the prior written consent of the Company, during the 12-month period beginning on the Closing Date and ending on the first anniversary of the Closing Date (the “Initial Lock-Up Period”),