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STOCK TITAN

[Form 4] Castle Biosciences, Inc. Insider Trading Activity

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

Kristen M. Oelschlager, Chief Operating Officer of Castle Biosciences, Inc. (CSTL), reported the sale of 18,007 shares of the issuer's common stock on 08/27/2025. The sales were executed in multiple trades at prices ranging from $21.24 to $21.94, with a reported weighted-average sale price of $21.69. Following the reported disposition, Oelschlager beneficially owned 153,793 shares, held directly. The Form 4 was signed by an attorney-in-fact, Frank Stokes, on 08/29/2025. The filer affirms availability to provide trade-level price and share details upon request.

Kristen M. Oelschlager, Chief Operating Officer di Castle Biosciences, Inc. (CSTL), ha venduto 18.007 azioni ordinarie della società il 27/08/2025. Le vendite sono state effettuate in più operazioni a prezzi compresi tra $21,24 e $21,94, con un prezzo medio ponderato riportato di $21,69. Dopo la cessione indicata, Oelschlager deteneva beneficiariamente 153.793 azioni, possedute direttamente. Il Modulo 4 è stato firmato per procura dall'avvocato Frank Stokes in data 29/08/2025. Il dichiarante conferma la disponibilità a fornire, su richiesta, i dettagli a livello di singola operazione relativi a prezzo e numero di azioni.

Kristen M. Oelschlager, directora de operaciones (COO) de Castle Biosciences, Inc. (CSTL), informó la venta de 18.007 acciones ordinarias de la emisora el 27/08/2025. Las ventas se realizaron en múltiples operaciones a precios que oscilaron entre $21.24 y $21.94, con un precio medio ponderado informado de $21.69. Tras la disposición reportada, Oelschlager poseía beneficiariamente 153.793 acciones, mantenidas de forma directa. El Formulario 4 fue firmado por poder por el apoderado Frank Stokes el 29/08/2025. El declarante afirma estar disponible para proporcionar, a solicitud, los detalles por operación sobre precios y cantidades.

Kristen M. Oelschlagerë‹˜ì€ Castle Biosciences, Inc.(CSTL)ì� 최고운ì˜ì±…ìž„ìž�(COO)로서 2025-08-27ì—� 발행회사ì� 보통ì£� 18,007주를 매ë„했다ê³� 신고했습니다. 매ë„ëŠ� 여러 차례ì� 거래ë¡� ì´ë£¨ì–´ì¡Œìœ¼ë©° 거래 ê°€ê²©ì€ $21.24~$21.94 범위였ê³�, ì‹ ê³ ë� ê°€ì¤� í‰ê·  ë§¤ë„ ê°€ê²©ì€ $21.69였습니ë‹�. ì‹ ê³ ë� 처분 ì´í›„ OelschlagerëŠ� ì§ì ‘ 보유 형태ë¡� 153,793주를 실질ì ìœ¼ë¡� 소유하고 있었습니ë‹�. Form 4ëŠ� Frank Stokesê°€ 대리로 서명했으ë©� 서명ì¼ì€ 2025-08-29입니ë‹�. 제출ìžëŠ” 요청 ì‹� 개별 거래ë³� ê°€ê²� ë°� ì£¼ì‹ ìˆ� 세부사항ì� 제공í•� ìˆ� 있ìŒì� 확ì¸í•©ë‹ˆë‹�.

Kristen M. Oelschlager, directrice des opérations de Castle Biosciences, Inc. (CSTL), a déclaré la vente de 18 007 actions ordinaires de l'émetteur le 27/08/2025. Les cessions ont été réalisées en plusieurs transactions à des prix allant de 21,24 $ à 21,94 $, avec un prix moyen pondéré déclaré de 21,69 $. Suite à la cession signalée, Oelschlager détenait à titre bénéficiaire 153 793 actions, détenues directement. Le formulaire 4 a été signé par procuration par Frank Stokes le 29/08/2025. Le déclarant confirme sa disponibilité à fournir, sur demande, les détails au niveau de chaque transaction concernant les prix et le nombre d'actions.

Kristen M. Oelschlager, Chief Operating Officer von Castle Biosciences, Inc. (CSTL), meldete den Verkauf von 18.007 Stammaktien des Emittenten am 27.08.2025. Die Verkäufe erfolgten in mehreren Transaktionen zu Preisen zwischen $21,24 und $21,94, mit einem gemeldeten gewichteten Durchschnittspreis von $21,69. Nach der gemeldeten Veräußerung besaß Oelschlager wirtschaftlich 153.793 Aktien, die direkt gehalten wurden. Das Formular 4 wurde am 29.08.2025 von einem Bevollmächtigten, Frank Stokes, unterzeichnet. Der Einreicher bestätigt, auf Anfrage Transaktionsdetails zu Einzelpreisen und Stückzahlen zur Verfügung stellen zu können.

Positive
  • None.
Negative
  • None.

Insights

TL;DR: Officer sold a modest block of shares; ownership remains material but no other disclosures indicate company-impacting events.

The reported sale of 18,007 shares at a weighted-average price of $21.69 reduced the reporting officer's direct stake to 153,793 shares. This is a routine Section 16 disclosure showing an executive liquidity event rather than a change in control or compensation grant. The Form 4 discloses execution across multiple trades and offers to provide granular trade details on request, which supports transparency. Absent additional company disclosures, this filing alone is informational and carries limited standalone market impact.

TL;DR: Transaction is a standard insider sale reported under Section 16; governance procedures appear followed via attorney-in-fact filing.

The filing identifies the reporting person as an officer and indicates the Form 4 was filed by a single reporting person and signed by an attorney-in-fact. The explanation notes multiple trade executions and a weighted-average price; the willingness to provide full trade-level details aligns with compliance norms. There is no indication of trading pursuant to a Rule 10b5-1 plan in the form text provided.

Kristen M. Oelschlager, Chief Operating Officer di Castle Biosciences, Inc. (CSTL), ha venduto 18.007 azioni ordinarie della società il 27/08/2025. Le vendite sono state effettuate in più operazioni a prezzi compresi tra $21,24 e $21,94, con un prezzo medio ponderato riportato di $21,69. Dopo la cessione indicata, Oelschlager deteneva beneficiariamente 153.793 azioni, possedute direttamente. Il Modulo 4 è stato firmato per procura dall'avvocato Frank Stokes in data 29/08/2025. Il dichiarante conferma la disponibilità a fornire, su richiesta, i dettagli a livello di singola operazione relativi a prezzo e numero di azioni.

Kristen M. Oelschlager, directora de operaciones (COO) de Castle Biosciences, Inc. (CSTL), informó la venta de 18.007 acciones ordinarias de la emisora el 27/08/2025. Las ventas se realizaron en múltiples operaciones a precios que oscilaron entre $21.24 y $21.94, con un precio medio ponderado informado de $21.69. Tras la disposición reportada, Oelschlager poseía beneficiariamente 153.793 acciones, mantenidas de forma directa. El Formulario 4 fue firmado por poder por el apoderado Frank Stokes el 29/08/2025. El declarante afirma estar disponible para proporcionar, a solicitud, los detalles por operación sobre precios y cantidades.

Kristen M. Oelschlagerë‹˜ì€ Castle Biosciences, Inc.(CSTL)ì� 최고운ì˜ì±…ìž„ìž�(COO)로서 2025-08-27ì—� 발행회사ì� 보통ì£� 18,007주를 매ë„했다ê³� 신고했습니다. 매ë„ëŠ� 여러 차례ì� 거래ë¡� ì´ë£¨ì–´ì¡Œìœ¼ë©° 거래 ê°€ê²©ì€ $21.24~$21.94 범위였ê³�, ì‹ ê³ ë� ê°€ì¤� í‰ê·  ë§¤ë„ ê°€ê²©ì€ $21.69였습니ë‹�. ì‹ ê³ ë� 처분 ì´í›„ OelschlagerëŠ� ì§ì ‘ 보유 형태ë¡� 153,793주를 실질ì ìœ¼ë¡� 소유하고 있었습니ë‹�. Form 4ëŠ� Frank Stokesê°€ 대리로 서명했으ë©� 서명ì¼ì€ 2025-08-29입니ë‹�. 제출ìžëŠ” 요청 ì‹� 개별 거래ë³� ê°€ê²� ë°� ì£¼ì‹ ìˆ� 세부사항ì� 제공í•� ìˆ� 있ìŒì� 확ì¸í•©ë‹ˆë‹�.

Kristen M. Oelschlager, directrice des opérations de Castle Biosciences, Inc. (CSTL), a déclaré la vente de 18 007 actions ordinaires de l'émetteur le 27/08/2025. Les cessions ont été réalisées en plusieurs transactions à des prix allant de 21,24 $ à 21,94 $, avec un prix moyen pondéré déclaré de 21,69 $. Suite à la cession signalée, Oelschlager détenait à titre bénéficiaire 153 793 actions, détenues directement. Le formulaire 4 a été signé par procuration par Frank Stokes le 29/08/2025. Le déclarant confirme sa disponibilité à fournir, sur demande, les détails au niveau de chaque transaction concernant les prix et le nombre d'actions.

Kristen M. Oelschlager, Chief Operating Officer von Castle Biosciences, Inc. (CSTL), meldete den Verkauf von 18.007 Stammaktien des Emittenten am 27.08.2025. Die Verkäufe erfolgten in mehreren Transaktionen zu Preisen zwischen $21,24 und $21,94, mit einem gemeldeten gewichteten Durchschnittspreis von $21,69. Nach der gemeldeten Veräußerung besaß Oelschlager wirtschaftlich 153.793 Aktien, die direkt gehalten wurden. Das Formular 4 wurde am 29.08.2025 von einem Bevollmächtigten, Frank Stokes, unterzeichnet. Der Einreicher bestätigt, auf Anfrage Transaktionsdetails zu Einzelpreisen und Stückzahlen zur Verfügung stellen zu können.

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*
Oelschlager Kristen M

(Last) (First) (Middle)
C/O CASTLE BIOSCIENCES, INC.
505 S FRIENDSWOOD DRIVE, SUITE 401

(Street)
FRIENDSWOOD TX 77546

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
CASTLE BIOSCIENCES INC [ CSTL ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Chief Operating Officer
3. Date of Earliest Transaction (Month/Day/Year)
08/27/2025
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
Common Stock 08/27/2025 S 18,007 D $21.69(1) 153,793 D
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
Explanation of Responses:
1. This transaction was executed in multiple trades at prices ranging from $21.24 to $21.94, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
Remarks:
/s/ Frank Stokes, Attorney-in-fact 08/29/2025
** 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 Kristen M. Oelschlager report on Form 4 for CSTL?

She reported the sale of 18,007 common shares on 08/27/2025 at a weighted-average price of $21.69, leaving her with 153,793 shares beneficially owned.

When were the CSTL shares sold and at what prices?

Sales occurred on 08/27/2025 in multiple trades at prices ranging from $21.24 to $21.94; the weighted-average sale price reported is $21.69.

Does the Form 4 indicate the sale was part of a 10b5-1 trading plan?

No. The provided Form 4 text does not indicate the transaction was made pursuant to a Rule 10b5-1(c) plan.

How many shares does Oelschlager own after the sale?

153,793 shares are reported as beneficially owned following the disposition.

Who signed the Form 4 filing for the reporting person?

Frank Stokes, Attorney-in-fact, signed the Form 4 on 08/29/2025.
Castle Biosciences

NASDAQ:CSTL

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Diagnostics & Research
Services-medical Laboratories
United States
FRIENDSWOOD