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[Form 4] Third Harmonic Bio, Inc. Insider Trading Activity

Filing Impact
(Low)
Filing Sentiment
(Neutral)
Form Type
4
Rhea-AI Filing Summary

Third Harmonic Bio, Inc. insider report shows the company is being dissolved and an insider's option shares were cancelled while receiving a liquidation distribution. Gladstone Michael, listed as a Director and >10% owner, reported a transaction dated 08/11/2025 cancelling 43,584 underlying common shares tied to stock options. The filing states the cancellation occurred in connection with the issuer's dissolution and that the holder received a liquidation distribution of $5.35 per share less the option exercise price, resulting in a net payment in lieu of stock ownership.

La segnalazione insider di Third Harmonic Bio, Inc. indica che la società è in fase di scioglimento e che le opzioni di un insider sono state annullate mentre riceveva una distribuzione di liquidazione. Michael Gladstone, indicato come amministratore e azionista con oltre il 10%, ha dichiarato una transazione datata 11/08/2025 che annulla 43.584 azioni ordinarie sottostanti legate a opzioni su azioni. Il documento riporta che l’annullamento è avvenuto in relazione allo scioglimento dell’emittente e che il titolare ha ricevuto una distribuzione di liquidazione di $5,35 per azione al netto del prezzo di esercizio dell’opzione, risultando in un pagamento netto in luogo della detenzione delle azioni.

El informe de un insider de Third Harmonic Bio, Inc. muestra que la compañía se está disolviendo y que las opciones de un insider fueron canceladas mientras recibía una distribución de liquidación. Michael Gladstone, registrado como director y propietario de más del 10%, reportó una transacción con fecha 11/08/2025 que cancela 43.584 acciones ordinarias subyacentes vinculadas a opciones sobre acciones. La presentación indica que la cancelación se produjo en relación con la disolución del emisor y que el titular recibió una distribución de liquidación de $5,35 por acción menos el precio de ejercicio de la opción, resultando en un pago neto en lugar de la titularidad de las acciones.

Third Harmonic Bio, Inc. 내부자 보고서에 따르면 회사가 해산 중이며, 한 내부자의 옵션 주식이 취소되는 동안 청산 분배를 받았습니다. 이사이자 10% 초과 지분 보유자로 기재된 마이클 글래드스톤(Michael Gladstone)은 2025-08-11 자 거래로서 주식매수선택권에 연계된 기초 보통주 43,584주를 취소했다고 보고했습니다. 제출서류는 취소가 발행인의 해산과 관련해 이루어졌으며, 보유자는 옵션 행사 가격을 뺀 주당 $5.35의 청산 분배를 받아 주식 보유 대신 순지급을 받았다고 명시하고 있습니다.

Le rapport d'initié de Third Harmonic Bio, Inc. indique que la société est en cours de dissolution et que les actions d'option d'un initié ont été annulées alors qu'il recevait une distribution de liquidation. Michael Gladstone, inscrit en tant que directeur et détenteur de plus de 10 %, a déclaré une opération datée du 11/08/2025 annulant 43 584 actions ordinaires sous-jacentes liées à des options sur actions. Le dossier précise que l'annulation est intervenue en lien avec la dissolution de l'émetteur et que le titulaire a reçu une distribution de liquidation de 5,35 $ par action déduite du prix d'exercice de l'option, aboutissant à un paiement net en lieu et place de la détention des actions.

Ein Insider-Bericht von Third Harmonic Bio, Inc. zeigt, dass das Unternehmen aufgelöst wird und die Optionsanteile eines Insiders bei gleichzeitiger Zahlung einer Liquidationsausschüttung storniert wurden. Michael Gladstone, als Direktor und mit mehr als 10% Anteil aufgeführt, meldete eine Transaktion vom 11.08.2025, bei der 43.584 zugrunde liegende Stammaktien im Zusammenhang mit Aktienoptionen storniert wurden. Die Einreichung gibt an, dass die Stornierung im Zusammenhang mit der Auflösung des Emittenten erfolgte und dass der Inhaber eine Liquidationsausschüttung von $5,35 pro Aktie abzüglich des Ausübungspreises der Option erhielt, was zu einer Nettozahlung anstelle des Aktienbesitzes führte.

Positive
  • Liquidation distribution paid at $5.35 per share (less exercise price), providing cash value to the option holder rather than uncertain recovery.
  • Insider transaction disclosed publicly via Form 4, maintaining regulatory transparency about ownership changes tied to the dissolution.
Negative
  • Issuer dissolution led to cancellation of shares, indicating termination of equity value for shareholders.
  • Cancellation of 43,584 shares underlying options held by a Director and >10% owner, removing those equity interests.
  • Equity holders receive settlement instead of ongoing ownership, which is a materially adverse corporate outcome for investors seeking continuing operations.

Insights

TL;DR: Report shows issuer dissolution with option cancellations and a per-share liquidation payout, a material negative for equity holders.

The Form 4 discloses cancellation of 43,584 shares underlying options held by a director and >10% owner, tied explicitly to the issuer's dissolution. The reported per-share liquidation distribution of $5.35 less exercise price indicates creditors/holders are being settled rather than equity continuing. For investors, dissolution and cancellation of outstanding insider-held options represent terminal corporate action that eliminates future equity value.

TL;DR: Governance filing confirms corporate wind-up and insider receipt of liquidation proceeds instead of retained equity.

The filing is clear: the issuer underwent dissolution and effected cancellation of insider option-related shares, with a cash distribution mechanism described. This is a definitive corporate governance event ending shareholder rights tied to those securities. The disclosure is appropriately filed on Form 4 to report the insider's change in beneficial ownership resulting from the dissolution process.

La segnalazione insider di Third Harmonic Bio, Inc. indica che la società è in fase di scioglimento e che le opzioni di un insider sono state annullate mentre riceveva una distribuzione di liquidazione. Michael Gladstone, indicato come amministratore e azionista con oltre il 10%, ha dichiarato una transazione datata 11/08/2025 che annulla 43.584 azioni ordinarie sottostanti legate a opzioni su azioni. Il documento riporta che l’annullamento è avvenuto in relazione allo scioglimento dell’emittente e che il titolare ha ricevuto una distribuzione di liquidazione di $5,35 per azione al netto del prezzo di esercizio dell’opzione, risultando in un pagamento netto in luogo della detenzione delle azioni.

El informe de un insider de Third Harmonic Bio, Inc. muestra que la compañía se está disolviendo y que las opciones de un insider fueron canceladas mientras recibía una distribución de liquidación. Michael Gladstone, registrado como director y propietario de más del 10%, reportó una transacción con fecha 11/08/2025 que cancela 43.584 acciones ordinarias subyacentes vinculadas a opciones sobre acciones. La presentación indica que la cancelación se produjo en relación con la disolución del emisor y que el titular recibió una distribución de liquidación de $5,35 por acción menos el precio de ejercicio de la opción, resultando en un pago neto en lugar de la titularidad de las acciones.

Third Harmonic Bio, Inc. 내부자 보고서에 따르면 회사가 해산 중이며, 한 내부자의 옵션 주식이 취소되는 동안 청산 분배를 받았습니다. 이사이자 10% 초과 지분 보유자로 기재된 마이클 글래드스톤(Michael Gladstone)은 2025-08-11 자 거래로서 주식매수선택권에 연계된 기초 보통주 43,584주를 취소했다고 보고했습니다. 제출서류는 취소가 발행인의 해산과 관련해 이루어졌으며, 보유자는 옵션 행사 가격을 뺀 주당 $5.35의 청산 분배를 받아 주식 보유 대신 순지급을 받았다고 명시하고 있습니다.

Le rapport d'initié de Third Harmonic Bio, Inc. indique que la société est en cours de dissolution et que les actions d'option d'un initié ont été annulées alors qu'il recevait une distribution de liquidation. Michael Gladstone, inscrit en tant que directeur et détenteur de plus de 10 %, a déclaré une opération datée du 11/08/2025 annulant 43 584 actions ordinaires sous-jacentes liées à des options sur actions. Le dossier précise que l'annulation est intervenue en lien avec la dissolution de l'émetteur et que le titulaire a reçu une distribution de liquidation de 5,35 $ par action déduite du prix d'exercice de l'option, aboutissant à un paiement net en lieu et place de la détention des actions.

Ein Insider-Bericht von Third Harmonic Bio, Inc. zeigt, dass das Unternehmen aufgelöst wird und die Optionsanteile eines Insiders bei gleichzeitiger Zahlung einer Liquidationsausschüttung storniert wurden. Michael Gladstone, als Direktor und mit mehr als 10% Anteil aufgeführt, meldete eine Transaktion vom 11.08.2025, bei der 43.584 zugrunde liegende Stammaktien im Zusammenhang mit Aktienoptionen storniert wurden. Die Einreichung gibt an, dass die Stornierung im Zusammenhang mit der Auflösung des Emittenten erfolgte und dass der Inhaber eine Liquidationsausschüttung von $5,35 pro Aktie abzüglich des Ausübungspreises der Option erhielt, was zu einer Nettozahlung anstelle des Aktienbesitzes führte.

SEC Form 4
FORM 4 UNITED 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*
Gladstone Michael

(Last) (First) (Middle)
C/O THIRD HARMONIC BIO, INC.
1700 MONTGOMERY STREET, SUITE 210

(Street)
SAN FRANCISCO CA 94111

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Third Harmonic Bio, Inc. [ THRD ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director X 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
08/11/2025
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
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)
Code V Amount (A) or (D) Price
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)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (1) 08/11/2025 J(2) 43,584 (1) (1) Common Stock 43,584 $0 0 D
Explanation of Responses:
1. Represents payment of the liquidation distribution of $5.35 per share less the exercise price of such options.
2. Transaction reported is a cancellation of shares of common stock in connection with the dissolution of the Issuer.
/s/ Ommer Chohan, Attorney-in-Fact 08/14/2025
** Signature of Reporting Person Date
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.

FAQ

What did the Form 4 for Third Harmonic Bio (THRD) report?

The Form 4 reports cancellation of 43,584 shares underlying stock options held by Gladstone Michael in connection with the issuer's dissolution and a liquidation distribution of $5.35 per share less the exercise price.

Who filed the Form 4 and what is their relationship to THRD?

Gladstone Michael is the reporting person, indicated as a Director and a 10% owner of Third Harmonic Bio.

How many option shares were cancelled and what was the transaction date?

43,584 option-related shares were cancelled with the transaction date reported as 08/11/2025.

What payment did the option holder receive instead of shares?

The filing states a liquidation distribution of $5.35 per share, less the exercise price of the options, was paid in lieu of issuing shares.

Does the Form 4 indicate why the shares were cancelled?

Yes. The cancellation is described as occurring in connection with the dissolution of the issuer.
Third Harmonic Bio Inc

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242.79M
35.24M
9.11%
80.12%
3.15%
Biotechnology
Pharmaceutical Preparations
Link
United States
SAN FRANCISCO