# EDGAR Filing Document

**Accession Number:** 0001979414
**File Stem:** 0001829126-26-006776
**Filing Date:** 2026-6
**Character Count:** 5227
**Document Hash:** 751d474c55d64d9f93be0fb301cef5b9
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001829126-26-006776.hdr.sgml**: 20260623

**ACCESSION NUMBER**: 0001829126-26-006776

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260623

**DATE AS OF CHANGE**: 20260623

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NEONC TECHNOLOGIES HOLDINGS, INC.
- **CENTRAL INDEX KEY:** 0001979414
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 921954864
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42567
- **FILM NUMBER:** 261112046

**BUSINESS ADDRESS:**
- **STREET 1:** 23975 PARK SORRENTO
- **STREET 2:** SUITE 205
- **CITY:** CALABASAS
- **STATE:** CA
- **ZIP:** 91302
- **BUSINESS PHONE:** 310 663 7831

**MAIL ADDRESS:**
- **STREET 1:** 23975 PARK SORRENTO
- **STREET 2:** SUITE 205
- **CITY:** CALABASAS
- **STATE:** CA
- **ZIP:** 91302

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**SCHEDULE 14A**

Proxy Statement Pursuant to Section 14(a) of the<br> Securities Exchange Act of 1934

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 Pursuant to Section 240.14a-12

**NEONC TECHNOLOGIES HOLDINGS, 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 in exhibit required by Item 25(b) per Exchange Act Rules 14a6(i)(1) and 0-11.

![](proxy_001.jpg)

Y our V ote Counts! NEONC TECHNOLOGIES HOLDINGS, INC. 2026 Annual Meeting Vote by August 13, 2026 11:59 PM ET NEONC TECHNOLOGIES HOLDINGS, INC. 23975 P ARK SORRENTO, SUITE 205 CALABASAS, CALIFORNIA 91302 Y ou invested in NEONC TECHNOLOGIES HOLDINGS, INC. and it ' s time to vote! Y ou have the right to vote on p r oposals being p r esented at the Annual Meeting. This is an important notice r ega r ding the availability of p r oxy materials for the stockholder meeting to be held on August 14, 2026. Get informed before you vote V iew the Notice and P r oxy Statement, Form 10 - K and Form 10 - K/A online OR you can r eceive a f r ee paper or email copy of the material(s) by r equesting prior to July 31, 2026. If you would like to r equest a copy of the material(s) for this and/or futu r e stockholder meetings, you may (1) visit ww w .P r oxy V ote.com, (2) call 1 - 800 - 579 - 1639 or (3) send an email to sendmaterial@p r oxyvote.com. If sending an email, please include your cont r ol number (indicated below) in the subject line. Unless r equested, you will not otherwise r eceive a paper or email cop y . For complete information and to vote, visit ww w .P r oxy V ote.com Cont rol # V ote V irtually at the Meeting\* August 14, 2026 10:00 A.M. Pacific T ime V irtually at: ww w .virtualsha r eholdermeeting.com/NTHI2026 \*Please check the meeting materials for any special requirements for meeting attendance. Smartphone users Point your camera he r e and vote without entering a cont r ol number T01185 - P54916

![](proxy_002.jpg)

V ote at ww w .P r oxy V ote.com THIS IS NOT A VO T ABLE BALLOT This is an overview of the p r oposals being p r esented at the upcoming stockholder meeting. Please follow the instructions on the r everse side to vote on these important matters. Prefer to receive an email instead? While voting on ww w .Proxy V ote.com, be sure to click "Delivery Settings". V oting Items Boa r d Recommends T01186 - P54916 1. T o elect two Class I di r ectors to serve for a th r ee - year term ending as of the annual meeting in 2029. Nominees: 1) V ictoria Medvec, Ph.D. 2) Steven L. Giannotta, M.D. For 2 . T o app rove an amendment to the Company ' s 2023 Equity Incentive Plan, as amended (the "Incentive Plan") to (i) inc r ease the number of sha r es available for grant of awa r ds by an additional 1 , 000 , 000 sha r es and (ii) to incorporate p rovisions for annua l inc r eases under the Incentive Plan on the first day of eac h calenda r yea r , beginning on January 1 , 2027 an d ending on January 1 , 2033 , equal to 20 % of the total sha r es of our common stock outstanding on the last day of the immediately p r eceding calendar yea r . For 3. T o ratify the appointment of CBIZ C P As P .C. as the independent r egiste r ed public accounting firm of the Company for the fiscal year ending December 31, 2026. For 4 . T o app rove adjou r nment of the Annual Meeting to a later date or dates, if necessary or app r opriate, under certain ci r cumstances, including to establish a quorum and/or solicit additional p roxies if the r e a r e insu f ficient votes to adopt one or mo r e of the fo r egoing p r oposals . For NOTE: Such other business as may p r operly come befo r e the meeting or any adjou r nment the r eof.