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[Form 4] Costco Wholesale Corp Insider Trading Activity

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

Costco Wholesale Corp. (COST) � Form 4 Insider Transaction

Director Susan L. Decker reported two open-market sales of Costco common stock on 18 June 2025:

  • 546 shares sold at $980.000 per share
  • 1 share sold at $978.395 per share

Following the sales, Decker’s direct beneficial ownership declined from 11,531.936 to 11,530.936 shares, a reduction of roughly 0.005% of her holdings. No derivative transactions were reported and no Rule 10b5-1 trading plan box was checked.

The transaction size is small relative to both Decker’s remaining position and Costco’s 443 million shares outstanding, implying no material impact on the company’s capital structure or insider sentiment indicators.

Costco Wholesale Corp. (COST) � Transazione Insider Modulo 4

La direttrice Susan L. Decker ha segnalato due vendite sul mercato aperto di azioni ordinarie Costco il 18 giugno 2025:

  • 546 azioni vendute a $980,000 per azione
  • 1 azione venduta a $978,395 per azione

Dopo le vendite, la proprietà diretta di Decker è diminuita da 11.531,936 a 11.530,936 azioni, una riduzione di circa il 0,005% delle sue partecipazioni. Non sono state segnalate operazioni su strumenti derivati né è stata selezionata la casella per un piano di trading ai sensi della Regola 10b5-1.

La dimensione della transazione è piccola rispetto sia alla posizione residua di Decker sia alle 443 milioni di azioni in circolazione di Costco, implicando un impatto materiale nullo sulla struttura del capitale della società o sugli indicatori di sentiment degli insider.

Costco Wholesale Corp. (COST) � Transacción Insider Formulario 4

La directora Susan L. Decker reportó dos ventas en el mercado abierto de acciones ordinarias de Costco el 18 de junio de 2025:

  • 546 acciones vendidas a $980.000 por acción
  • 1 acción vendida a $978.395 por acción

Tras las ventas, la propiedad directa de Decker disminuyó de 11,531.936 a 11,530.936 acciones, una reducción de aproximadamente el 0,005% de sus participaciones. No se reportaron transacciones con derivados ni se marcó la casilla del plan de trading bajo la Regla 10b5-1.

El tamaño de la transacción es pequeño en relación tanto con la posición restante de Decker como con los 443 millones de acciones en circulación de Costco, lo que implica un impacto material nulo en la estructura de capital de la compañía o en los indicadores de sentimiento de los insiders.

코스트코 홀세일 코퍼레이�(COST) � 내부� 거래 신고�(Form 4)

이사 수잔 L. 데커2025� 6� 18� 코스트코 보통주를 � 차례 장외 매도했다� 보고했습니다:

  • 546�� 주당 $980.000� 매도
  • 1�� 주당 $978.395� 매도

매도 � 데커� 직접 보유 주식은 11,531.936주에� 11,530.936�� � 0.005% 감소했습니다. 파생상품 거래� 보고되지 않았으며, Rule 10b5-1 거래 계획 박스� 체크되지 않았습니�.

거래 규모� 데커� 남은 보유량과 코스트코� 4� 4,300� � 발행 주식 수에 비해 작아 회사� 자본 구조� 내부� 심리 지표에 중대� 영향 없음� 시사합니�.

Costco Wholesale Corp. (COST) � Transaction d’initié Formulaire 4

La directrice Susan L. Decker a déclaré deux ventes sur le marché libre d’actions ordinaires de Costco le 18 juin 2025 :

  • 546 actions vendues à 980,000 $ par action
  • 1 action vendue à 978,395 $ par action

Suite à ces ventes, la détention directe de Decker a diminué de 11 531,936 à 11 530,936 actions, soit une réduction d’environ 0,005 % de ses avoirs. Aucune transaction sur dérivés n’a été signalée et aucune case relative à un plan de trading selon la règle 10b5-1 n’a été cochée.

La taille de la transaction est faible par rapport à la position restante de Decker et aux 443 millions d’actions en circulation de Costco, ce qui implique un impact matériel nul sur la structure du capital de la société ou sur les indicateurs de sentiment des initiés.

Costco Wholesale Corp. (COST) � Insider-Transaktion Formular 4

Die Direktorin Susan L. Decker meldete am 18. Juni 2025 zwei Verkäufe von Costco-Stammaktien am offenen Markt:

  • 546 Aktien zu je $980,000 verkauft
  • 1 Aktie zu $978,395 verkauft

Nach den Verkäufen sank Deckers direkte wirtschaftliche Eigentümerschaft von 11.531,936 auf 11.530,936 Aktien, eine Reduktion von etwa 0,005% ihres Bestands. Es wurden keine Derivatgeschäfte gemeldet und das Kästchen für einen Rule 10b5-1-Handelsplan wurde nicht angekreuzt.

Die Transaktionsgröße ist im Verhältnis zu Deckers verbleibender Position und den 443 Millionen ausstehenden Aktien von Costco gering, was auf keine wesentlichen Auswirkungen auf die Kapitalstruktur des Unternehmens oder die Insider-Stimmung hindeutet.

Positive
  • None.
Negative
  • Insider selling: Director Susan L. Decker disposed of 547 shares, which, while small, may be viewed cautiously by some investors tracking insider sentiment.

Insights

TL;DR: Minor director sale; immaterial to COST; neutral impact.

The filing reveals Director Susan Decker sold a total of 547 COST shares worth about $0.54 million. Her remaining stake exceeds 11.5 k shares, indicating the sale represents a de-minimis <0.01 % of shares outstanding. Absence of a 10b5-1 plan could draw limited scrutiny, yet size and timing suggest routine portfolio rebalancing rather than a signal of adverse insider outlook. Overall governance posture unchanged.

Costco Wholesale Corp. (COST) � Transazione Insider Modulo 4

La direttrice Susan L. Decker ha segnalato due vendite sul mercato aperto di azioni ordinarie Costco il 18 giugno 2025:

  • 546 azioni vendute a $980,000 per azione
  • 1 azione venduta a $978,395 per azione

Dopo le vendite, la proprietà diretta di Decker è diminuita da 11.531,936 a 11.530,936 azioni, una riduzione di circa il 0,005% delle sue partecipazioni. Non sono state segnalate operazioni su strumenti derivati né è stata selezionata la casella per un piano di trading ai sensi della Regola 10b5-1.

La dimensione della transazione è piccola rispetto sia alla posizione residua di Decker sia alle 443 milioni di azioni in circolazione di Costco, implicando un impatto materiale nullo sulla struttura del capitale della società o sugli indicatori di sentiment degli insider.

Costco Wholesale Corp. (COST) � Transacción Insider Formulario 4

La directora Susan L. Decker reportó dos ventas en el mercado abierto de acciones ordinarias de Costco el 18 de junio de 2025:

  • 546 acciones vendidas a $980.000 por acción
  • 1 acción vendida a $978.395 por acción

Tras las ventas, la propiedad directa de Decker disminuyó de 11,531.936 a 11,530.936 acciones, una reducción de aproximadamente el 0,005% de sus participaciones. No se reportaron transacciones con derivados ni se marcó la casilla del plan de trading bajo la Regla 10b5-1.

El tamaño de la transacción es pequeño en relación tanto con la posición restante de Decker como con los 443 millones de acciones en circulación de Costco, lo que implica un impacto material nulo en la estructura de capital de la compañía o en los indicadores de sentimiento de los insiders.

코스트코 홀세일 코퍼레이�(COST) � 내부� 거래 신고�(Form 4)

이사 수잔 L. 데커2025� 6� 18� 코스트코 보통주를 � 차례 장외 매도했다� 보고했습니다:

  • 546�� 주당 $980.000� 매도
  • 1�� 주당 $978.395� 매도

매도 � 데커� 직접 보유 주식은 11,531.936주에� 11,530.936�� � 0.005% 감소했습니다. 파생상품 거래� 보고되지 않았으며, Rule 10b5-1 거래 계획 박스� 체크되지 않았습니�.

거래 규모� 데커� 남은 보유량과 코스트코� 4� 4,300� � 발행 주식 수에 비해 작아 회사� 자본 구조� 내부� 심리 지표에 중대� 영향 없음� 시사합니�.

Costco Wholesale Corp. (COST) � Transaction d’initié Formulaire 4

La directrice Susan L. Decker a déclaré deux ventes sur le marché libre d’actions ordinaires de Costco le 18 juin 2025 :

  • 546 actions vendues à 980,000 $ par action
  • 1 action vendue à 978,395 $ par action

Suite à ces ventes, la détention directe de Decker a diminué de 11 531,936 à 11 530,936 actions, soit une réduction d’environ 0,005 % de ses avoirs. Aucune transaction sur dérivés n’a été signalée et aucune case relative à un plan de trading selon la règle 10b5-1 n’a été cochée.

La taille de la transaction est faible par rapport à la position restante de Decker et aux 443 millions d’actions en circulation de Costco, ce qui implique un impact matériel nul sur la structure du capital de la société ou sur les indicateurs de sentiment des initiés.

Costco Wholesale Corp. (COST) � Insider-Transaktion Formular 4

Die Direktorin Susan L. Decker meldete am 18. Juni 2025 zwei Verkäufe von Costco-Stammaktien am offenen Markt:

  • 546 Aktien zu je $980,000 verkauft
  • 1 Aktie zu $978,395 verkauft

Nach den Verkäufen sank Deckers direkte wirtschaftliche Eigentümerschaft von 11.531,936 auf 11.530,936 Aktien, eine Reduktion von etwa 0,005% ihres Bestands. Es wurden keine Derivatgeschäfte gemeldet und das Kästchen für einen Rule 10b5-1-Handelsplan wurde nicht angekreuzt.

Die Transaktionsgröße ist im Verhältnis zu Deckers verbleibender Position und den 443 Millionen ausstehenden Aktien von Costco gering, was auf keine wesentlichen Auswirkungen auf die Kapitalstruktur des Unternehmens oder die Insider-Stimmung hindeutet.

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*
DECKER SUSAN L

(Last) (First) (Middle)
999 LAKE DRIVE

(Street)
ISSAQUAH WA 98027

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
COSTCO WHOLESALE CORP /NEW [ COST ]
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)
06/18/2025
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 06/18/2025 S 546 D $980 11,531.936 D
Common Stock 06/18/2025 S 1 D $978.395 11,530.936 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:
/s/ Alejandro Torres, Attorney-in-Fact 06/20/2025
** 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

How many Costco (COST) shares did Susan L. Decker sell on 18 June 2025?

She sold 547 shares of Costco common stock.

At what price were the Costco shares sold according to the Form 4?

The shares were sold at $980.000 and $978.395 per share.

What is Susan L. Decker’s remaining direct share ownership in Costco after the sale?

Her direct beneficial ownership stands at 11,530.936 shares.

Was the sale conducted under a Rule 10b5-1 trading plan?

No, the Rule 10b5-1 checkbox was not marked on the filing.

Does the transaction materially affect Costco’s share count?

No. The 547 shares sold are immaterial relative to Costco’s ~443 million shares outstanding.
Costco Whsl Corp

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COST Stock Data

437.25B
442.44M
0.2%
72.23%
1.6%
Discount Stores
Retail-variety Stores
United States
ISSAQUAH