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Neonc Technologies CMO buys 2,732 shares at $3.66

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Form Type
4

Rhea-AI Filing Summary

Thomas C. Chen, CMO, reported two indirect purchases of NTHI common stock through an IRA: 2,732 shares at $3.66 per share on November 9, 2026, and 2,284 shares at a weighted average $4.379 per share on November 10, 2026. The November 10 purchases were reported at prices ranging from $4.31 to $4.38 per share. No Rule 10b5-1 plan is reported.

Insider CHEN THOMAS C
Role CMO
Bought 5,016 shs ($20K)
Increase in Position 20.5%
Type Security Shares Price Value
Purchase Common Stock F6, F7 2,284 $4.379 $10K
Purchase Common Stock 2,732 $3.66 $10K
Holding Common Stock F1 -- -- --
Holding Common Stock F2 -- -- --
Holding Common Stock F3 -- -- --
Holding Common Stock F4 -- -- --
Holding Common Stock F5 -- -- --
Holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 29,519 shares (Indirect, By IRA); Common Stock — 583,531 shares (Direct); Common Stock — 261,242 shares (Indirect, By HCWG LLC); Common Stock — 888,148 shares (Indirect, By NeuCen Biomedical Co. Ltd.); Common Stock — 2,833,961 shares (Indirect, By TR Chen Third Family Limited Partnership.); Common Stock — 93,253 shares (Indirect, By Tien Duan Chen Trust); Common Stock — 948 shares (Indirect, By Defined Benefit Plan)
Holdings Before and After: Common Stock, 24,503 to 29,519 shares (Indirect, By IRA)
Other Insiders: 1 other insider reported open-market purchases of this stock in the 30 days up to this filing.
Footnotes (7)
  1. F1. Includes shares of common stock held by certain members of Reporting Person's immediate family of which Reporting Person disclaims beneficial ownership except to the extent of his pecuniary interest, if any, therein.
  2. F2. Such shares represent only Reporting Person's percentage interest in HCWG LLC.
  3. F3. Shares held by NeuCen Biomedical Co. Ltd., which is owned in part by Reporting Person's spouse. Reporting Person disclaims beneficial ownership of such shares except to the extent of his pecuniary interest, if any, therein.
  4. F4. Shares held by T. R. Chen Third Family Limited Partnership, a NV limited partnership, of which Reporting Person and his spouse are the general partners with sole voting and dispositive power. Reporting Person disclaims beneficial ownership of such shares except to the extent of his pecuniary interest, if any, therein.
  5. F5. Reporting Person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest, if any, therein.
  6. F6. The aggregate number of shares (the "Shares") of common stock of Issuer purchased by the Reporting Person on the same date at different prices.
  7. F7. Represents the weighted average purchase price. The Shares were purchased at prices ranging from $4.31 to $4.38 per share, inclusive. Full information regarding the number of Shares sold at each price shall be provided to the Securities and Exchange Commission staff, Issuer or any security holder, upon request.
Shares purchased 2,732 shares Indirect IRA purchase on November 9, 2026
Purchase price $3.66 per share Indirect IRA purchase on November 9, 2026
Shares purchased 2,284 shares Indirect IRA purchase on November 10, 2026
Weighted average purchase price $4.379 per share Indirect IRA purchase on November 10, 2026
Purchase price range $4.31–$4.38 per share Prices for the November 10, 2026 purchase
weighted average purchase price financial
"Represents the weighted average purchase price."
The weighted average purchase price is the average cost per share you paid across multiple buys, calculated so larger purchases count more than smaller ones. Imagine buying apples at different prices: the overall price you effectively paid depends on how many apples you bought at each price. Investors use it to measure true cost basis, calculate gains or losses, decide when to sell, and manage taxes and portfolio performance.
beneficial ownership financial
"Reporting Person disclaims beneficial ownership"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
pecuniary interest financial
"except to the extent of his pecuniary interest"

FAQ

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How many NTHI shares did Thomas C. Chen purchase, and at what prices?

Thomas C. Chen reported an indirect IRA purchase of 2,732 shares at $3.66 per share on November 9, 2026, and 2,284 shares at a weighted average $4.379 per share on November 10, 2026; the November 10 purchases were at prices ranging from $4.31 to $4.38 per share.

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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
CHEN THOMAS C

(Last)(First)(Middle)
23975 SORRENTO PARK
SUITE 205

(Street)
CALABASAS CALIFORNIA 91302

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
NEONC TECHNOLOGIES HOLDINGS, INC. [ NTHI ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirectorX10% Owner
XOfficer (give title below)Other (specify below)
CMO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
11/09/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock11/09/2026P2,732A$3.6627,235IBy IRA
Common Stock583,531(1)D
Common Stock261,242(2)IBy HCWG LLC
Common Stock888,148(3)IBy NeuCen Biomedical Co. Ltd.
Common Stock2,833,961(4)IBy TR Chen Third Family Limited Partnership.
Common Stock93,253(5)IBy Tien Duan Chen Trust
Common Stock948IBy Defined Benefit Plan
Common Stock11/10/2026P2,284(6)A$4.379(7)29,519IBy IRA
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. Includes shares of common stock held by certain members of Reporting Person's immediate family of which Reporting Person disclaims beneficial ownership except to the extent of his pecuniary interest, if any, therein.
2. Such shares represent only Reporting Person's percentage interest in HCWG LLC.
3. Shares held by NeuCen Biomedical Co. Ltd., which is owned in part by Reporting Person's spouse. Reporting Person disclaims beneficial ownership of such shares except to the extent of his pecuniary interest, if any, therein.
4. Shares held by T. R. Chen Third Family Limited Partnership, a NV limited partnership, of which Reporting Person and his spouse are the general partners with sole voting and dispositive power. Reporting Person disclaims beneficial ownership of such shares except to the extent of his pecuniary interest, if any, therein.
5. Reporting Person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest, if any, therein.
6. The aggregate number of shares (the "Shares") of common stock of Issuer purchased by the Reporting Person on the same date at different prices.
7. Represents the weighted average purchase price. The Shares were purchased at prices ranging from $4.31 to $4.38 per share, inclusive. Full information regarding the number of Shares sold at each price shall be provided to the Securities and Exchange Commission staff, Issuer or any security holder, upon request.
Remarks:
/S/ THOMAS C CHEN11/12/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

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