Inhibitor Therapeutics, Inc.

For the period ended Aug 17, 2026. Filed Aug 17, 2026.

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What shareholders are asked to vote on at a company's meeting. It is where to find what directors and top executives are paid, and who owns the most shares.

Aug 17, 2026 · Filed Aug 17, 2026

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

****Washington, D.C. 20549

Schedule 14A

Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934

(Amendment No. )

Filed by the Registrant	☒
Filed by a Party other than the Registrant	☐

Check the appropriate box:

☐	Preliminary Proxy Statement
☐	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
☒	Definitive Proxy Statement
☐	Definitive Additional Materials
☐	Soliciting Material under §240.14a-12

Inhibitor Therapeutics, Inc.

****(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

☒	No fee required.
☐	Fee paid previously with preliminary materials.
☐	Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

To Be Held On September 15, 2026

Dear Stockholder:

The Annual Meeting of Stockholders (the “Annual Meeting”) of Inhibitor Therapeutics, Inc. (the “Company”), will be held virtually via the Internet at www.virtualshareholdermeeting.com/HPPI2026 on September 15, 2026 at 10 a.m. Eastern time for the following purposes:

1.	To elect Francis E. O’Donnell, Samuel J. Sears, Niraj Vasisht, Michelle Yanez, Michael Jerman and Ronald E. Osman (the “Director Nominees”) to serve on the Company’s board of directors (the “Board”) for a term that expires at the 2027 Annual Meeting of Stockholders, or until their successors are elected and qualified (the “Director Election Proposal”);
2.	To ratify the appointment by the Board of Cherry Bekaert LLP (“Cherry”) as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2026 (the “Auditor Ratification Proposal”);
3.	To approve the 2025 Share Incentive Plan (the “Incentive Plan Proposal”);
4.	To hold an advisory vote on executive compensation (the “Say-on-Pay Proposal”);
5.	To hold an advisory vote on the frequency of future advisory votes on executive compensation (the “Frequency Proposal”);
6.	To approve the adjournment of the Annual Meeting to the extent there are insufficient proxies at the Annual Meeting to approve any one or more of the foregoing proposals (the “Adjournment Proposal”); and
7.	To transact such other business as may properly come before the Annual Meeting.

These items of business are more fully described in the Proxy Statement accompanying this notice (the “Notice”). All stockholders are invited to attend the meeting. The record date for the Annual Meeting is July 20, 2026. Only stockholders owning shares of common stock of record at the close of business on that date are entitled to notice of and to vote at the meeting.

The solicitation of proxies is made by the Company. The Company will pay for the entire cost of soliciting proxies. In addition to these mailed proxy materials, our directors and officers may also solicit proxies in person, by telephone or by other means of communication. These parties will not be paid any additional compensation for soliciting proxies. We may also reimburse brokerage firms, banks and other agents for the cost of forwarding proxy materials to beneficial owners.

The Annual Meeting will be a completely virtual meeting of stockholders, which will be conducted exclusively by webcast on the internet. No physical meeting will be held.

Important Notice Regarding the Availability of Proxy Materials

for the Annual Meeting to Be Held on September 15, 2026

at 10 a.m. Eastern Time

virtually via the Internet at www.virtualshareholdermeeting.com/HPPI2026.

The Proxy Statement is available atwww.proxyvote.com

Proxy materials, including this Notice, the Proxy Statement and the Company’s Annual Report on Form 10-K for the year ended December 31, 2025, will be first sent to stockholders on or about August 17, 2026.

By Order of the Board of Directors,

/s/ Francis E. O’Donnell

Francis E. O’Donnell

Chief Executive Officer

Tampa, Florida

You are cordially invited to attend the virtual annual meeting. Whether or not you expect to attend the virtual annual meeting, please complete, date, sign and return the enclosed proxy, or vote by phone or online as instructed in these materials, as promptly as possible in order to ensure your representation at the meeting. A return envelope (which is postage prepaid if mailed in the United States) has been provided for your convenience.

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