TapewireFind a company

person · Reporting owner

CHEN THOMAS C

Disclosed activity across 1 company

Tapewire entity
21111
SEC CIK
0001998682

Export transaction history ↓

Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
NEONC TECHNOLOGIES HOLDINGS, INC.NTHI · Entity 6646Director · CEO · 10% ownerSeptember 11, 2026September 16, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

NEONC TECHNOLOGIES HOLDINGS, INC.

Report date September 11, 2026 · Filed September 16, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectBy IRA19,261 Reported balance After 2026-09-11 transaction · row 1 Account identity is unresolved; indirect or unspecified ownership is not merged.
1 source row

Row 1 · 2026-09-11 · Purchase · Acquired 5,556 · Balance 19,261

Common StockSEC Table I · non-derivativeIndirectBy IRA24,503 Reported balance After 2026-09-14 transaction · row 8 Account identity is unresolved; indirect or unspecified ownership is not merged.
1 source row

Row 8 · 2026-09-14 · Purchase · Acquired 5,242 · Balance 24,503

Common StockSEC Table I · non-derivativeDirect583,531 Reported balance Holding disclosure · report date 2026-09-11 · row 2 Holding and transaction disclosures are not merged.
1 source row

Row 2 · Balance 583,531

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.

Common StockSEC Table I · non-derivativeIndirectBy HCWG LLC261,242 Reported balance Holding disclosure · report date 2026-09-11 · row 3 Holding and transaction disclosures are not merged.
1 source row

Row 3 · Balance 261,242

F2: Such shares represent only Reporting Person's percentage interest in HCWG LLC.

Common StockSEC Table I · non-derivativeIndirectBy NeuCen Biomedical Co. Ltd.888,148 Reported balance Holding disclosure · report date 2026-09-11 · row 4 Holding and transaction disclosures are not merged.
1 source row

Row 4 · Balance 888,148

F3: Shares held by NeuCen Biomedical Co. Ltd. ("NeuCen"). NeuCen 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.

Common StockSEC Table I · non-derivativeIndirectBy TR Chen Third Family Limited Partnership.2,833,961 Reported balance Holding disclosure · report date 2026-09-11 · row 5 Holding and transaction disclosures are not merged.
1 source row

Row 5 · Balance 2,833,961

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.

Common StockSEC Table I · non-derivativeIndirectBy Tien Duan Chen Trust93,253 Reported balance Holding disclosure · report date 2026-09-11 · row 6 Holding and transaction disclosures are not merged.
1 source row

Row 6 · Balance 93,253

F5: Reporting Person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest, if any, therein.

Common StockSEC Table I · non-derivativeIndirectBy Defined Benefit Plan948 Reported balance Holding disclosure · report date 2026-09-11 · row 7 Holding and transaction disclosures are not merged.
1 source row

Row 7 · Balance 948

Filing footnotes · ownership attribution and instrument terms

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.

F2: Such shares represent only Reporting Person's percentage interest in HCWG LLC.

F3: Shares held by NeuCen Biomedical Co. Ltd. ("NeuCen"). NeuCen 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.

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.

F5: Reporting Person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest, if any, therein.

Transaction history

JSON API
Reset

Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
September 14, 2026 Filed Sep 16, 2026 00:45 UTC NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 PurchaseCommon Stock 5,242 $3.82 $19,998.23
Disclosure

SEC source: 0001213900-26-100266 · marketforms-73995.xml · nonDerivative · entry 8

CHEN THOMAS C · CIK 0001998682 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By IRA

Disclosed balance after: 24,503

Read SEC document
September 11, 2026 Filed Sep 16, 2026 00:45 UTC NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 PurchaseCommon Stock 5,556 $3.60 $20,001.60
Disclosure

SEC source: 0001213900-26-100266 · marketforms-73995.xml · nonDerivative · entry 1

CHEN THOMAS C · CIK 0001998682 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By IRA

Disclosed balance after: 19,261

Read SEC document
August 18, 2026 Filed Aug 21, 2026 01:15 UTC NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 PurchaseCommon Stock 12,757 $5.49 $69,997.66
Disclosure

SEC source: 0001213900-26-092277 · marketforms-73819.xml · nonDerivative · entry 1

CHEN THOMAS C · CIK 0001998682 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By IRA

Disclosed balance after: 13,705

F1 · shares: The aggregate number of shares of Issuer's Class A common stock (the "Shares") purchased by the Reporting Person on the same day at different prices.

F2 · price: Represents the weighted average purchase price. The Shares were purchased at prices ranging from $5.275 to $5.82 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.

Read SEC document
August 17, 2026 Filed Aug 18, 2026 20:13 UTC NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 PurchaseCommon Stock 2,472 $4.04 $9,998.00
Disclosure

SEC source: 0001213900-26-091231 · marketforms-72989.xml · nonDerivative · entry 2

CHEN THOMAS C · CIK 0001998682 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 583,531

F1 · shares: The aggregate number of shares of Issuer's Class A common stock (the "Shares") purchased by the Reporting Person on the same day at different prices.

F3 · price: Represents the weighted average purchase price. The Shares were purchased at prices ranging from $4.04 to $4.1699 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.

F4 · balance_after: 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.

Read SEC document
August 17, 2026 Filed Aug 21, 2026 01:15 UTC Amendment NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 PurchaseCommon Stock 2,472 $4.04 $9,998.00
Disclosure

SEC source: 0001213900-26-092276 · marketforms-73820.xml · nonDerivative · entry 4

CHEN THOMAS C · CIK 0001998682 · Director · Chief Scientific Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 583,531

F1 · shares: The aggregate number of shares of Issuer's common stock (the "Shares") purchased by the Reporting Person on the same day at different prices.

F5 · price: Represents the weighted average purchase price. The Shares were purchased at prices ranging from $4.04 to $4.1699 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.

F4 · balance_after: 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.

Read SEC document
August 14, 2026 Filed Aug 18, 2026 20:13 UTC NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 PurchaseCommon Stock 33,787 $3.85 $130,002.24
Disclosure

SEC source: 0001213900-26-091231 · marketforms-72989.xml · nonDerivative · entry 1

CHEN THOMAS C · CIK 0001998682 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 581,059

F1 · shares: The aggregate number of shares of Issuer's Class A common stock (the "Shares") purchased by the Reporting Person on the same day at different prices.

F2 · price: Represents the weighted average purchase price. The Shares were purchased at prices ranging from $3.2299 to $4.0993 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.

Read SEC document
August 14, 2026 Filed Aug 21, 2026 01:15 UTC Amendment NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 PurchaseCommon Stock 33,787 $3.85 $130,002.24
Disclosure

SEC source: 0001213900-26-092276 · marketforms-73820.xml · nonDerivative · entry 3

CHEN THOMAS C · CIK 0001998682 · Director · Chief Scientific Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 581,059

F1 · shares: The aggregate number of shares of Issuer's common stock (the "Shares") purchased by the Reporting Person on the same day at different prices.

F3 · price: Represents the weighted average purchase price. The Shares were purchased at prices ranging from $3.2299 to $4.0993 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.

F4 · balance_after: 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.

Read SEC document
April 24, 2026 Filed Aug 21, 2026 01:15 UTC Amendment NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 PurchaseCommon Stock 10,000 $4.80 $48,000.00
Disclosure

SEC source: 0001213900-26-092276 · marketforms-73820.xml · nonDerivative · entry 2

CHEN THOMAS C · CIK 0001998682 · Director · Chief Scientific Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Defined Benefit Plan

Disclosed balance after: 10,000

Read SEC document
April 10, 2026 Filed Aug 21, 2026 01:15 UTC Amendment NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 PurchaseCommon Stock 948 $5.17 $4,898.98
Disclosure

SEC source: 0001213900-26-092276 · marketforms-73820.xml · nonDerivative · entry 1

CHEN THOMAS C · CIK 0001998682 · Director · Chief Scientific Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By IRA

Disclosed balance after: 948

F1 · shares: The aggregate number of shares of Issuer's common stock (the "Shares") purchased by the Reporting Person on the same day at different prices.

F2 · price: Represents the weighted average purchase price. The Shares were purchased at prices ranging from $5.165 to $5.1722 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.

Read SEC document
May 22, 2025 Filed May 24, 2025 01:30 UTC NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 PurchaseCommon Stock 2,709 $7.38 $20,000.01
Disclosure

SEC source: 0001213900-25-047511 · marketforms-69672.xml · nonDerivative · entry 2

CHEN THOMAS C · CIK 0001998682 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 551,668

F1 · shares: The aggregate number of shares of Issuer's Class A common stock (the "Shares") purchased by the Reporting Person on the same day at different prices.

F4 · price: Represents the weighted average purchase price. The Shares were purchased at prices ranging from $7.38 to $7.4899 per share. 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.

F3 · balance_after: 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.

Read SEC document
May 21, 2025 Filed May 24, 2025 01:30 UTC NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 PurchaseCommon Stock 2,759 $7.25 $20,002.47
Disclosure

SEC source: 0001213900-25-047511 · marketforms-69672.xml · nonDerivative · entry 1

CHEN THOMAS C · CIK 0001998682 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 548,959

F1 · shares: The aggregate number of shares of Issuer's Class A common stock (the "Shares") purchased by the Reporting Person on the same day at different prices.

F2 · price: Represents the weighted average purchase price. The Shares were purchased at prices ranging from $7.181 to $7.25 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.

F3 · balance_after: 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.

Read SEC document
May 12, 2025 Filed May 20, 2025 01:24 UTC NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 PurchaseCommon Stock 400 $7.00 $2,800.00
Disclosure

SEC source: 0001213900-25-045595 · marketforms-69536.xml · nonDerivative · entry 1

CHEN THOMAS C · CIK 0001998682 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 546,200

F1 · balance_after: 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.

Read SEC document
March 26, 2025 Filed Mar 29, 2025 00:30 UTC NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 OtherCommon Stock 4,076 $0.00 $0.00
Disclosure

SEC source: 0001013762-25-004347 · marketforms-69052.xml · nonDerivative · entry 1

CHEN THOMAS C · CIK 0001998682 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By HCWG LLC.

Disclosed balance after: 220,787

F1 · kind: Transfer of shares of common stock held by HCWG LLC pursuant to agreement.

F2 · price: Not applicable. Number of shares transferred was based on a per share value of $18.

F3 · balance_after: The shares reported herein represent only Reporting Person's percentage interest in HCWG LLC.

Read SEC document
March 26, 2025 Filed Apr 9, 2025 01:35 UTC Amendment NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 OtherWarrant (right to buy) · Derivative 79,688 $0.00 Strike: $12.00 $0.00
Disclosure

SEC source: 0001213900-25-030062 · marketforms-69129.xml · derivative · entry 9

CHEN THOMAS C · CIK 0001998682 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By HCWG

Disclosed balance after: 0

Underlying: Common Stock · 79,688 shares

Expires not disclosed

F8 · derivative.expiration_date: Not applicable.

Read SEC document
March 26, 2025 Filed Apr 9, 2025 01:35 UTC Amendment NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 SaleCommon Stock 983 $19.13 $18,804.69
Disclosure

SEC source: 0001213900-25-030062 · marketforms-69129.xml · nonDerivative · entry 4

CHEN THOMAS C · CIK 0001998682 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By HCWG LLC

Disclosed balance after: 261,242

Read SEC document
March 26, 2025 Filed Apr 9, 2025 01:35 UTC Amendment NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 SaleCommon Stock 38,250 $25.00 $956,250.00
Disclosure

SEC source: 0001213900-25-030062 · marketforms-69129.xml · nonDerivative · entry 3

CHEN THOMAS C · CIK 0001998682 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By HCWG LLC

Disclosed balance after: 262,225

Read SEC document
March 26, 2025 Filed Apr 9, 2025 01:35 UTC Amendment NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 OtherCommon Stock 79,688 $12.00 $956,256.00
Disclosure

SEC source: 0001213900-25-030062 · marketforms-69129.xml · nonDerivative · entry 2

CHEN THOMAS C · CIK 0001998682 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By HCWG LLC

Disclosed balance after: 300,475

F4 · kind: On 3/26/2025, in conjunction with Issuer's initial listing on Nasdaq, HCWG exercised a warrant to purchase 312,500 shares of Issuer's common stock at $12 per share. HCWG paid the exercise price on a cashless basis, resulting in Issuer's withholding 150,000 of the warrant shares to pay the exercise price and issuing to HCWG the remaining 162,500 shares of common stock. Number of shares reported herein as acquired and disposed of by the Reporting Person represents Reporting Person's indirect interest in HCWG.

Read SEC document
March 26, 2025 Filed Apr 9, 2025 01:35 UTC Amendment NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 OtherCommon Stock 4,076 $0.00 $0.00
Disclosure

SEC source: 0001213900-25-030062 · marketforms-69129.xml · nonDerivative · entry 1

CHEN THOMAS C · CIK 0001998682 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By HCWG LLC.

Disclosed balance after: 220,787

F1 · kind: Transfer of shares of common stock held by HCWG LLC pursuant to agreement.

F2 · price: Not applicable. Number of shares transferred was based on a per share value of $18.

F3 · balance_after: The shares reported herein represent only Reporting Person's percentage interest in HCWG LLC.

Read SEC document
March 26, 2025 Filed Jun 5, 2025 23:05 UTC Amendment NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 OtherWarrant (right to buy) · Derivative 79,688 $0.00 Strike: $12.00 $0.00
Disclosure

SEC source: 0001213900-25-051685 · marketforms-69576.xml · derivative · entry 9

CHEN THOMAS C · CIK 0001998682 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By HCWG

Disclosed balance after: 0

Underlying: Common Stock · 79,688 shares

Expires not disclosed

F9 · derivative.expiration_date: Not applicable.

Read SEC document
March 26, 2025 Filed Jun 5, 2025 23:05 UTC Amendment NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 SaleCommon Stock 983 $19.13 $18,804.69
Disclosure

SEC source: 0001213900-25-051685 · marketforms-69576.xml · nonDerivative · entry 4

CHEN THOMAS C · CIK 0001998682 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By HCWG LLC

Disclosed balance after: 261,242

Read SEC document
March 26, 2025 Filed Jun 5, 2025 23:05 UTC Amendment NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 SaleCommon Stock 38,250 $25.00 $956,250.00
Disclosure

SEC source: 0001213900-25-051685 · marketforms-69576.xml · nonDerivative · entry 3

CHEN THOMAS C · CIK 0001998682 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By HCWG LLC

Disclosed balance after: 262,225

F5 · kind: In connection with HCWG's cashless exercise of the warrant described herein, Reporting Person paid his proportionate share of the exercise price on a cashless basis. Reporting Person's proportionate withholding from shares issued to HCWG totaled 38,250 warrant shares to pay the exercise price.

Read SEC document
March 26, 2025 Filed Jun 5, 2025 23:05 UTC Amendment NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 OtherCommon Stock 79,688 $12.00 $956,256.00
Disclosure

SEC source: 0001213900-25-051685 · marketforms-69576.xml · nonDerivative · entry 2

CHEN THOMAS C · CIK 0001998682 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By HCWG LLC

Disclosed balance after: 300,475

F4 · kind: On 3/26/2025, in conjunction with Issuer's initial listing on Nasdaq, HCWG exercised a warrant to purchase 312,500 shares of Issuer's common stock at $12 per share. HCWG paid the exercise price on a cashless basis, resulting in Issuer's withholding 150,000 of the warrant shares to pay the exercise price and issuing to HCWG the remaining 162,500 shares of common stock. Number of shares reported herein as acquired and disposed of by the Reporting Person represents Reporting Person's indirect interest in HCWG.

Read SEC document
March 26, 2025 Filed Jun 5, 2025 23:05 UTC Amendment NEONC TECHNOLOGIES HOLDINGS, INC. NTHI · Entity 6646 OtherCommon Stock 4,076 $0.00 $0.00
Disclosure

SEC source: 0001213900-25-051685 · marketforms-69576.xml · nonDerivative · entry 1

CHEN THOMAS C · CIK 0001998682 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By HCWG LLC.

Disclosed balance after: 220,787

F1 · kind: Transfer of shares of common stock held by HCWG LLC pursuant to agreement.

F2 · price: Not applicable. Number of shares transferred was based on a per share value of $18.

F3 · balance_after: The shares reported herein represent only Reporting Person's percentage interest in HCWG LLC.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.