Costco Wholesale Corporation
US ˙ NasdaqGS ˙ US22160K1051

SecurityCOST / Costco Wholesale Corporation
InsiderJohn W Stanton
This page shows the track record and history of STANTON JOHN W insider trades in Costco Wholesale Corporation. The SEC defines Insiders as officers, directors, or significant investors (greater than 10% ownership) in a company. It is illegal for insiders to make trades in their companies based on material, non-public information ("MNPI"). This does not mean it is illegal for them to make any trades in their own companies. However, they must report all trades to the SEC via a Form 4.
Insider Purchases - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made by John W Stanton in COST / Costco Wholesale Corporation. This analysis helps to understand if the insider consistently generates abnormal returns, and is worth following. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Reported
Shares
Reported
Price
Adjusted
Shares
Adjusted
Price
Cost Basis Days to
Max
Price at
Max
Max
Profit ($)
Max Return (%)
2015-11-10 10,000 155.3968 10,000 155.3968 1,553,968 276 169.0400 136,432 8.78

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

COST / Costco Wholesale Corporation Insider Trades
Insider Sales - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made by John W Stanton in COST / Costco Wholesale Corporation. A consistent pattern of loss avoidance may suggest that future sale transactions may predict declines in price. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Reported
Shares
Reported
Price
Adjusted
Shares
Adjusted
Price
Cost Basis Days to
Min
Price at
Min
Max Loss
Avoided ($)
Max Loss
Avoided (%)
There are no known unplanned open-market trades for this insider

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

COST / Costco Wholesale Corporation Insider Trades
Insider Transaction History
File
Date
Trade
Date
Form Insider Ticker Security Title Code 10b5-1 Direct Exercise
Price
Unit
Price
Units
Changed
Value
Changed (1K)
Remaining
Options
Remaining
Shares
2025-09-04 2025-09-02 4 STANTON JOHN W By Son COST Common Stock G - Gift I 211 211
2025-09-04 2025-09-02 4 STANTON JOHN W Stanton Family Trust COST Common Stock G - Gift I -211 211
2024-10-24 2024-10-22 4 STANTON JOHN W COST Common Stock A - Award D 303 23,804
2024-01-12 2024-01-12 4 STANTON JOHN W COST Common Stock A - Award D 19 23,501
2023-10-24 2023-10-22 4 STANTON JOHN W COST Common Stock A - Award D 489 23,482
2022-10-25 2022-10-22 4 STANTON JOHN W COST Common Stock A - Award D 565 22,993
2021-10-26 2021-10-22 4 STANTON JOHN W COST Common Stock A - Award D 561 22,428
2020-12-11 2020-12-11 4 STANTON JOHN W COST Common Stock A - Award D 34 21,867
2020-10-22 2020-10-22 4 STANTON JOHN W COST Common Stock A - Award D 719 21,833
2019-10-24 2019-10-22 4 STANTON JOHN W COST Common Stock A - Award D 901 21,114
2018-10-24 2018-10-22 4 STANTON JOHN W COST Common Stock A - Award D 1,179 20,213
2017-10-27 2017-10-22 4/A STANTON JOHN W COST Common Stock A - Award D 1,680 19,034
2017-10-24 2017-10-22 4 STANTON JOHN W COST Common Stock A - Award D 1,870 19,224
2017-05-25 2017-05-24 4 STANTON JOHN W COST Common Stock A - Award D 173.0100 103 18 17,354
2016-10-24 2016-10-22 4 STANTON JOHN W COST Common Stock A - Award D 2,182 17,251
2016-02-01 2016-01-29 4 STANTON JOHN W COST Common Stock A - Award D 1,613 15,069
2015-11-10 2015-11-10 4 STANTON JOHN W COST Common Stock P - Purchase D 155.3968 10,000 1,554 13,456
2015-11-09 3 STANTON JOHN W COST Common Stock D 7,334
2015-11-09 3 STANTON JOHN W Stanton Family Trust COST Common Stock I 4,300
2015-11-09 3 STANTON JOHN W COST Common Stock D 7,334
2015-11-09 3 STANTON JOHN W Stanton Family Trust COST Common Stock I 4,300
P
Köp på öppna marknaden eller privat köp av icke-derivatsäkerhet
S
Köp på öppna marknaden eller privat försäljning av icke-derivatsäkerhet
A
Bevilja, tilldelning eller annat förvärv av värdepapper från företaget (såsom en option)
C
Omvandling av derivat
D
Försäljning eller överföring av värdepapper tillbaka til företaget
F
Betalning av lösenpris eller skatteskuld med del av värdepapper som erhållits från bolaget
G
Överlåtelse av värdepapper från eller till insidern
K
Aktieswappar och liknande säkringsaffärer
M
Utövande eller omvandling av derivatsäkerhet som erhållits från företaget (som en option)
V
En transaktion friviligt rapporterad på schema 4
J
Andra (med en fotnot som beskriver transaktionen)