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STOCK TITAN

[Form 4] Shattuck Labs, Inc. Insider Trading Activity

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

Dr. Mona Ashiya, a director of Shattuck Labs, Inc. (STTK), was granted a stock option on 08/28/2025 allowing purchase of 66,300 shares of common stock at a $0.99 exercise price. The option vests in three equal annual installments on each of the first three anniversaries of August 28, 2025, is exercisable beginning on those vesting dates, and expires on August 28, 2035. The Form 4 reports 66,300 derivative securities beneficially owned following the transaction, filed by one reporting person and signed by an attorney-in-fact on 09/02/2025. An agreement requires the Reporting Person to transfer any securities or economic benefits from these awards to OrbiMed Advisors LLC and OrbiMed Capital GP IX LLC for allocation to OrbiMed Private Investments IX, LP.

La Dott.ssa Mona Ashiya, direttrice di Shattuck Labs, Inc. (STTK), ha ricevuto in data 28/08/2025 un’opzione su azioni che le consente di acquistare 66.300 azioni ordinarie a un prezzo di esercizio di $0,99. L’opzione matura in tre rate annuali uguali nei primi tre anniversari del 28 agosto 2025, può essere esercitata a partire da ciascuna di tali date di maturazione e scade il 28 agosto 2035. Il Modulo 4, depositato il 02/09/2025 e firmato per procura, riporta 66.300 strumenti derivati detenuti a titolo beneficiario dopo l’operazione e indica un unico soggetto segnalante. Un accordo impone al Reporting Person di trasferire eventuali titoli o benefici economici derivanti da questi premi a OrbiMed Advisors LLC e OrbiMed Capital GP IX LLC per l’allocazione a OrbiMed Private Investments IX, LP.

La Dra. Mona Ashiya, directora de Shattuck Labs, Inc. (STTK), recibió el 28/08/2025 una opción sobre acciones que le permite comprar 66.300 acciones ordinarias a un precio de ejercicio de $0,99. La opción vence en tres cuotas anuales iguales en cada uno de los tres primeros aniversarios del 28 de agosto de 2025, puede ejercerse a partir de esas fechas de adquisición y caduca el 28 de agosto de 2035. El Formulario 4, presentado el 02/09/2025 y firmado por un apoderado, informa de 66.300 valores derivados de titularidad beneficiaria tras la operación y fue presentado por una sola persona informante. Un acuerdo exige que la persona informante transfiera cualquier valor o beneficio económico procedente de estos premios a OrbiMed Advisors LLC y OrbiMed Capital GP IX LLC para su asignación a OrbiMed Private Investments IX, LP.

샤턱 랩스(Shattuck Labs, Inc., STTK) 이사� 모나 아시� 박사� 2025� 8� 28일에 보통� 66,300주를 주당 $0.99� 행사가격으� 매수� � 있는 스톡옵션� 부여받았습니다. � 옵션은 2025� 8� 28일을 시작으로 � 3� 기념일에 걸쳐 연간 동일 비율� � 차례� 걸쳐 가속되�, � 가속일� 행사� � 있고 2035� 8� 28일에 만료됩니�. 2025� 9� 2일에 제출� Form 4에는 거래 이후� 66,300개의 파생증권� 수익적으� 보유하고 있는 것으� 기재되어 있으�, 하나� 보고자가 제출하고 대리인� 서명했습니다. � 계약� 따라 보고자는 � 보상으로 발생� 증권 또는 경제� 이익� OrbiMed Advisors LLC � OrbiMed Capital GP IX LLC� 이전하여 OrbiMed Private Investments IX, LP� 배분해야 합니�.

Le Dr Mona Ashiya, administratrice de Shattuck Labs, Inc. (STTK), s’est vu accorder le 28/08/2025 une option d’achat lui permettant d’acquérir 66 300 actions ordinaires au prix d’exercice de 0,99 $. L’option acquiert des droits en trois versements annuels égaux lors des trois premiers anniversaires du 28 août 2025, est exerçable à compter de ces dates d’acquisition et expire le 28 août 2035. Le formulaire 4, déposé le 02/09/2025 et signé par un mandataire, indique 66 300 titres dérivés détenus à titre bénéficiaire après l’opération et a été déposé par une seule personne déclarente. Un accord oblige la personne déclarente à transférer tout titre ou avantage économique résultant de ces attributions à OrbiMed Advisors LLC et OrbiMed Capital GP IX LLC pour affectation à OrbiMed Private Investments IX, LP.

Dr. Mona Ashiya, Direktorin von Shattuck Labs, Inc. (STTK), erhielt am 28.08.2025 eine Aktienoption, die ihr den Kauf von 66.300 Stammaktien zu einem Ausübungspreis von $0,99 erlaubt. Die Option wird in drei gleichen jährlichen Raten zu den ersten drei Jahrestagen des 28. August 2025 unverfallbar, ist ab diesen Vesting-Daten ausübbar und verfällt am 28. August 2035. Das am 02.09.2025 eingereichte Formular 4, unterzeichnet von einem Bevollmächtigten, weist nach der Transaktion 66.300 derivativen Wertpapiere als wirtschaftlich gehalten aus und wurde von einer meldenden Person eingereicht. Einer Vereinbarung zufolge muss die meldende Person sämtliche aus diesen Zuwendungen hervorgehenden Wertpapiere oder wirtschaftlichen Vorteile an OrbiMed Advisors LLC und OrbiMed Capital GP IX LLC zur Zuordnung an OrbiMed Private Investments IX, LP übertragen.

Positive
  • Option grant disclosed: 66,300‑share stock option awarded on 08/28/2025 with a clearly stated $0.99 exercise price.
  • Clear vesting schedule: Option vests in three equal annual installments on each of the first three anniversaries of 08/28/2025.
  • Full expiry date provided: Option expires on 08/28/2035, giving a defined exercise window.
Negative
  • Transfer obligation disclosed: Reporting Person is required to transfer any securities or economic benefits from these awards to OrbiMed Advisors LLC and OrbiMed Capital GP IX LLC for provision to OrbiMed Private Investments IX, LP.
  • Beneficial ownership complexity: Although 66,300 derivative securities are reported as beneficially owned following the grant, the transfer arrangement affects direct economic control.

Insights

TL;DR: Director granted a time‑based option for 66,300 shares with an explicit transfer arrangement to OrbiMed entities.

The Form 4 discloses a time‑based stock option awarded on 08/28/2025 with a $0.99 exercise price covering 66,300 shares and a ten‑year term to expiry on 08/28/2035. Vesting is set in three equal annual installments beginning one year from grant, which ties realization of economic benefit to continued service. The filing also documents a contractual obligation to transfer any issued shares or economic proceeds to OrbiMed Advisors LLC and OrbiMed Capital GP IX LLC for ultimate provision to OrbiMed Private Investments IX, LP, indicating the reporter does not retain unilateral control of proceeds. The report was executed by an attorney‑in‑fact and filed as a single reporting person Form 4.

TL;DR: Standard time‑based option grant with multi‑year vesting and an explicit third‑party transfer arrangement.

The disclosed award is structured as a ten‑year stock option exercisable into 66,300 shares at $0.99, with vesting in three equal annual tranches beginning 08/28/2026. The filing clearly states the option award and the mechanics of vesting and expiry. The obligation to transfer any shares or economic benefit to specified OrbiMed entities is explicitly documented, which affects beneficial ownership and economic receipt despite the option being reported as beneficially owned on a direct basis following the grant. All key dates, quantities, and the transfer agreement are provided in the filing.

La Dott.ssa Mona Ashiya, direttrice di Shattuck Labs, Inc. (STTK), ha ricevuto in data 28/08/2025 un’opzione su azioni che le consente di acquistare 66.300 azioni ordinarie a un prezzo di esercizio di $0,99. L’opzione matura in tre rate annuali uguali nei primi tre anniversari del 28 agosto 2025, può essere esercitata a partire da ciascuna di tali date di maturazione e scade il 28 agosto 2035. Il Modulo 4, depositato il 02/09/2025 e firmato per procura, riporta 66.300 strumenti derivati detenuti a titolo beneficiario dopo l’operazione e indica un unico soggetto segnalante. Un accordo impone al Reporting Person di trasferire eventuali titoli o benefici economici derivanti da questi premi a OrbiMed Advisors LLC e OrbiMed Capital GP IX LLC per l’allocazione a OrbiMed Private Investments IX, LP.

La Dra. Mona Ashiya, directora de Shattuck Labs, Inc. (STTK), recibió el 28/08/2025 una opción sobre acciones que le permite comprar 66.300 acciones ordinarias a un precio de ejercicio de $0,99. La opción vence en tres cuotas anuales iguales en cada uno de los tres primeros aniversarios del 28 de agosto de 2025, puede ejercerse a partir de esas fechas de adquisición y caduca el 28 de agosto de 2035. El Formulario 4, presentado el 02/09/2025 y firmado por un apoderado, informa de 66.300 valores derivados de titularidad beneficiaria tras la operación y fue presentado por una sola persona informante. Un acuerdo exige que la persona informante transfiera cualquier valor o beneficio económico procedente de estos premios a OrbiMed Advisors LLC y OrbiMed Capital GP IX LLC para su asignación a OrbiMed Private Investments IX, LP.

샤턱 랩스(Shattuck Labs, Inc., STTK) 이사� 모나 아시� 박사� 2025� 8� 28일에 보통� 66,300주를 주당 $0.99� 행사가격으� 매수� � 있는 스톡옵션� 부여받았습니다. � 옵션은 2025� 8� 28일을 시작으로 � 3� 기념일에 걸쳐 연간 동일 비율� � 차례� 걸쳐 가속되�, � 가속일� 행사� � 있고 2035� 8� 28일에 만료됩니�. 2025� 9� 2일에 제출� Form 4에는 거래 이후� 66,300개의 파생증권� 수익적으� 보유하고 있는 것으� 기재되어 있으�, 하나� 보고자가 제출하고 대리인� 서명했습니다. � 계약� 따라 보고자는 � 보상으로 발생� 증권 또는 경제� 이익� OrbiMed Advisors LLC � OrbiMed Capital GP IX LLC� 이전하여 OrbiMed Private Investments IX, LP� 배분해야 합니�.

Le Dr Mona Ashiya, administratrice de Shattuck Labs, Inc. (STTK), s’est vu accorder le 28/08/2025 une option d’achat lui permettant d’acquérir 66 300 actions ordinaires au prix d’exercice de 0,99 $. L’option acquiert des droits en trois versements annuels égaux lors des trois premiers anniversaires du 28 août 2025, est exerçable à compter de ces dates d’acquisition et expire le 28 août 2035. Le formulaire 4, déposé le 02/09/2025 et signé par un mandataire, indique 66 300 titres dérivés détenus à titre bénéficiaire après l’opération et a été déposé par une seule personne déclarente. Un accord oblige la personne déclarente à transférer tout titre ou avantage économique résultant de ces attributions à OrbiMed Advisors LLC et OrbiMed Capital GP IX LLC pour affectation à OrbiMed Private Investments IX, LP.

Dr. Mona Ashiya, Direktorin von Shattuck Labs, Inc. (STTK), erhielt am 28.08.2025 eine Aktienoption, die ihr den Kauf von 66.300 Stammaktien zu einem Ausübungspreis von $0,99 erlaubt. Die Option wird in drei gleichen jährlichen Raten zu den ersten drei Jahrestagen des 28. August 2025 unverfallbar, ist ab diesen Vesting-Daten ausübbar und verfällt am 28. August 2035. Das am 02.09.2025 eingereichte Formular 4, unterzeichnet von einem Bevollmächtigten, weist nach der Transaktion 66.300 derivativen Wertpapiere als wirtschaftlich gehalten aus und wurde von einer meldenden Person eingereicht. Einer Vereinbarung zufolge muss die meldende Person sämtliche aus diesen Zuwendungen hervorgehenden Wertpapiere oder wirtschaftlichen Vorteile an OrbiMed Advisors LLC und OrbiMed Capital GP IX LLC zur Zuordnung an OrbiMed Private Investments IX, LP übertragen.

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*
Ashiya Mona

(Last) (First) (Middle)
C/O SHATTUCK LABS, INC.
500 W. 5TH STREET, SUITE 1200

(Street)
AUSTIN TX 78701

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Shattuck Labs, Inc. [ STTK ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
08/28/2025
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 (Right to Buy) $0.99 08/28/2025 A 66,300 (1) 08/28/2035 Common Stock 66,300 $0 66,300 D(2)
Explanation of Responses:
1. This option represents the right to purchase a total of 66,300 shares of the Issuer's common stock, and vests in three equal annual installments on each of the first three anniversaries of August 28, 2025, subject to the Reporting Person's continued service to the Issuer.
2. Pursuant to an agreement with OrbiMed Advisors LLC and OrbiMed Capital GP IX LLC, the Reporting Person is obligated to transfer any securities issued under any such stock options or other awards, or the economic benefit thereof, to OrbiMed Advisors LLC and OrbiMed Capital GP IX LLC, which will in turn ensure that such securities or economic benefits are provided to OrbiMed Private Investments IX, LP.
/s/ Andrew R. Neill, Attorney-in-Fact for Dr. Mona Ashiya 09/02/2025
** 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 Dr. Mona Ashiya report on the Form 4 for STTK?

She reported a stock option grant to purchase 66,300 shares at a $0.99 exercise price dated 08/28/2025.

What is the vesting schedule and expiration for the option in the STTK Form 4?

Vests in three equal annual installments

Does the Form 4 indicate any transfer or third‑party arrangement?

Yes. The Reporting Person is obligated to transfer any securities or economic benefit from these awards to OrbiMed Advisors LLC and OrbiMed Capital GP IX LLC for allocation to OrbiMed Private Investments IX, LP.

When was the Form 4 filed and who signed it?

The filing was signed by Andrew R. Neill as attorney‑in‑fact for Dr. Mona Ashiya on 09/02/2025.

How many derivative securities are reported as beneficially owned after the transaction?

66,300 derivative securities (the stock option covering 66,300 shares) are reported as beneficially owned following the transaction.
Shattuck Labs, Inc.

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Biotechnology
Pharmaceutical Preparations
United States
AUSTIN