Company: SMNR
Filing Date: 2025-08-13
Form Type: 424B3
Source: 0001193125-25-179226
Chunk: 297

Company: Semnur Pharmaceuticals, Inc.
Filing Date: 2025-08-13
Form: 424B3
Chunk 297
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 in writing before the Meeting that you have revoked your proxy; or |

| • |     | you may attend the Meeting in person, revoke your proxy, and vote in person, as indicated above. |

170

Who Can Answer Your Questions About Voting Your Shares

If you are a shareholder and have any questions about how to vote or direct a vote in respect of your Denali Ordinary Shares, you may call Advantage Proxy,
Inc., Denali’s proxy solicitor, by calling (877) 870-8565, or call collect at (206) 870-8565, or by emailing ksmith@advantageproxy.com.

No Additional Matters May Be Presented at the Meeting

This Meeting has been called only to consider the approval of the Business Combination
Proposal, the Domestication Proposal, the Charter Approval Proposal, the Bylaws Approval Proposal, the Advisory Governance Proposals, the Director Election Proposal, the Nasdaq Proposal, the Option Exchange Proposal and the Adjournment Proposal.
Under the Current Denali Charter, other than procedural matters incident to the conduct of the Meeting, no other matters may be considered at the Meeting if they are not included in the notice of the Meeting.

Redemption Rights

Pursuant to
the Current Denali Charter, a Denali shareholder may request of Denali that Denali redeem all or a portion of its Denali Class A Ordinary Shares for cash, out of funds legally available therefor, if the Business Combination is consummated. As a
holder of Denali Class A Ordinary Shares, you will be entitled to receive cash for any Denali Class A Ordinary Shares to be redeemed only if you:

(i) hold Denali Class A Ordinary Shares;

(ii) submit a written request to VStock, Denali’s transfer agent, in which you (i) request that Denali redeem all or a portion of
your Denali Class A Ordinary Shares for cash, and (ii) identify yourself as the beneficial holder of the Denali Class A Ordinary Shares and provide your legal name, phone number and address; and

(iii) deliver your Denali Class A Ordinary Shares to VStock, Denali’s transfer agent, physically or electronically through DTC.

Holders must complete the procedures for electing to redeem their Denali Class A Ordinary Shares in the manner described above prior to
5:00 p.m., Eastern Time, on August 29, 2025 (two business days before the Meeting) in order for their shares to be redeemed.

The redemption
rights include the requirement