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person · Reporting owner

PORTERA JOSEPH P

Disclosed activity across 1 company

Tapewire entity
11703
SEC CIK
0001184498

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
COSTCO WHOLESALE CORP /NEWCOST · Entity 2803Executive VPSeptember 14, 2021September 16, 2021

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

COSTCO WHOLESALE CORP /NEW

Report date September 14, 2021 · Filed September 16, 2021

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect11,987 Ending reported balance After 2021-09-14 transaction · row 2
2 source rows · reconciled sequence

Row 1 · 2021-09-14 · Grant · Acquired 9,926 · Balance 16,137

F1: Grant was initially made in October 2020 subject to performance conditions concerning fiscal 2021, which have been deemed satisfied by the Compensation Committee of the Board of Directors. The shares of restricted stock subject to performance conditions vest ratably over a four year period from satisfaction based on continued employment with the Company. In addition, under the Stock Incentive Plan, long term employees are eligible for accelerated vesting upon the anniversary of their 25th, 30th and 35th years of service.

F2: Not applicable. Grant of Restricted Stock Units.

Row 2 · 2021-09-14 · Tax withholding · Disposed 4,150 · Balance 11,987

Common StockSEC Table I · non-derivativeIndirectPortera Family Trust1,789 Reported balance Holding disclosure · report date 2021-09-14 · row 3 Holding and transaction disclosures are not merged.
1 source row

Row 3 · Balance 1,789

Filing footnotes · ownership attribution and instrument terms

F1: Grant was initially made in October 2020 subject to performance conditions concerning fiscal 2021, which have been deemed satisfied by the Compensation Committee of the Board of Directors. The shares of restricted stock subject to performance conditions vest ratably over a four year period from satisfaction based on continued employment with the Company. In addition, under the Stock Incentive Plan, long term employees are eligible for accelerated vesting upon the anniversary of their 25th, 30th and 35th years of service.

F2: Not applicable. Grant of Restricted Stock Units.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
January 10, 2017 Filed May 26, 2017 01:47 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 OtherCommon Stock 356 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-17-035650 · doc4.xml · nonDerivative · entry 3

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Indirect · Portera Family Trust

Disclosed balance after: 7,760

F1 · price: Transfer from direct to indirect.

Read SEC document
January 10, 2017 Filed May 26, 2017 01:47 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 OtherCommon Stock 356 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-17-035650 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,666

F1 · price: Transfer from direct to indirect.

Read SEC document
December 09, 2016 Filed Dec 9, 2016 22:37 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 SaleCommon Stock 16,921 $158.38 $2,679,995.36
Disclosure

SEC source: 0001209191-16-154476 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,022

F1 · price: The price shown is a weighted average sale price for shares sold in multiple transactions; the sale prices ranged from $158.29 to $158.57 per share. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.

Read SEC document
October 22, 2016 Filed Oct 25, 2016 19:19 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 587 $148.97 $87,445.39
Disclosure

SEC source: 0001209191-16-146848 · doc4.xml · nonDerivative · entry 6

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 35,943

F2 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 21, 2016.

Read SEC document
October 22, 2016 Filed Oct 25, 2016 19:19 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 697 $148.97 $103,832.09
Disclosure

SEC source: 0001209191-16-146848 · doc4.xml · nonDerivative · entry 5

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,530

F2 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 21, 2016.

Read SEC document
October 22, 2016 Filed Oct 25, 2016 19:19 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 697 $148.97 $103,832.09
Disclosure

SEC source: 0001209191-16-146848 · doc4.xml · nonDerivative · entry 4

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 37,227

F2 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 21, 2016.

Read SEC document
October 22, 2016 Filed Oct 25, 2016 19:19 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 892 $148.97 $132,881.24
Disclosure

SEC source: 0001209191-16-146848 · doc4.xml · nonDerivative · entry 3

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 37,924

F2 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 21, 2016.

Read SEC document
October 22, 2016 Filed Oct 25, 2016 19:19 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 891 $148.97 $132,732.27
Disclosure

SEC source: 0001209191-16-146848 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 38,816

F2 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 21, 2016.

Read SEC document
October 14, 2016 Filed Oct 25, 2016 19:19 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 OtherCommon Stock 7,404 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-16-146848 · doc4.xml · nonDerivative · entry 7

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Indirect · Portera Family Trust

Disclosed balance after: 7,404

F1 · price: Transfer from direct to indirect.

Read SEC document
October 14, 2016 Filed Oct 25, 2016 19:19 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 OtherCommon Stock 7,404 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-16-146848 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,707

F1 · price: Transfer from direct to indirect.

Read SEC document
October 05, 2016 Filed Oct 7, 2016 20:19 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 4,893 $149.98 $733,852.14
Disclosure

SEC source: 0001209191-16-145395 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 47,111

Read SEC document
October 05, 2016 Filed Oct 7, 2016 20:19 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GrantCommon Stock 18,440 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-16-145395 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 52,004

F1 · shares: Grant was initially made in October 2015 subject to performance conditions concerning fiscal 2016, which have been deemed satisfied by the Compensation Committee of the Board of Directors. The shares of restricted stock subject to performance conditions vest ratably over a four year period from satisfaction based on continued employment with the Company. In addition, under the Stock Incentive Plan, long term employees are eligible for accelerated vesting upon the anniversary of their 25th, 30th and 35th years of service.

F2 · price: Not applicable. Grant of Restricted Stock Units.

Read SEC document
October 22, 2015 Filed Oct 26, 2015 22:24 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 697 $158.15 $110,230.55
Disclosure

SEC source: 0001209191-15-076797 · doc4.xml · nonDerivative · entry 5

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,218

F1 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 22, 2015.

Read SEC document
October 22, 2015 Filed Oct 26, 2015 22:24 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 698 $158.15 $110,388.70
Disclosure

SEC source: 0001209191-15-076797 · doc4.xml · nonDerivative · entry 4

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,915

F1 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 22, 2015.

Read SEC document
October 22, 2015 Filed Oct 26, 2015 22:24 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 893 $158.15 $141,227.95
Disclosure

SEC source: 0001209191-15-076797 · doc4.xml · nonDerivative · entry 3

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,613

F1 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 22, 2015.

Read SEC document
October 22, 2015 Filed Oct 26, 2015 22:24 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 893 $158.15 $141,227.95
Disclosure

SEC source: 0001209191-15-076797 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,506

F1 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 22, 2015.

Read SEC document
October 22, 2015 Filed Oct 26, 2015 22:24 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 892 $158.15 $141,069.80
Disclosure

SEC source: 0001209191-15-076797 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,399

F1 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 22, 2015.

Read SEC document
October 13, 2015 Filed Oct 15, 2015 23:04 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 SaleCommon Stock 10,000 $152.75 $1,527,544.00
Disclosure

SEC source: 0001209191-15-075600 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,291

F1 · price: The price shown is a weighted average sale price for shares sold in multiple transactions; the sale prices ranged from $152.75 to $152.84 per share. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.

Read SEC document
September 24, 2015 Filed Sep 28, 2015 16:22 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 5,960 $144.87 $863,425.20
Disclosure

SEC source: 0001209191-15-072269 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 70,945

Read SEC document
September 24, 2015 Filed Sep 28, 2015 16:22 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GrantCommon Stock 21,000 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-15-072269 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 76,905

F1 · shares: Grant was initially made in October 2014 subject to performance conditions concerning fiscal 2015, which have been deemed satisfied by the Compensation Committee of the Board of Directors. The shares of restricted stock subject to performance conditions vest ratably over a four year period from satisfaction based on continued employment with the Company. In addition, under the Stock Incentive Plan, long term employees are eligible for accelerated vesting upon the anniversary of their 25th, 30th and 35th years of service.

F2 · price: Not applicable. Grant of Restricted Stock Units.

Read SEC document
February 27, 2015 Filed Mar 3, 2015 23:27 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GrantCommon Stock 1,599 $146.96 $234,989.04
Disclosure

SEC source: 0001209191-15-021728 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,005

F1 · shares: Represents additional restricted stock units ("RSUs") resulting from the upward adjustment of outstanding unvested RSUs by a factor of 1.042 in connection with the $5.00 per share special cash dividend payable by the issuer to shareholders of record on February 27, 2015. The adjustment was required under the plan documents governing the grants. The RSUs reported are subject to the same vesting schedules as the original RSUs to which they relate.

Read SEC document
October 29, 2014 Filed Oct 29, 2014 18:35 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 SaleCommon Stock 15,000 $131.55 $1,973,218.50
Disclosure

SEC source: 0001209191-14-065218 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 53,406

F1 · price: The price shown is a weighted average sale price for shares sold in multiple transactions; the sale prices ranged from $131.51 to $131.6806 per share. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.

Read SEC document
October 24, 2014 Filed Oct 29, 2014 18:35 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 OtherCommon Stock 17,645 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-14-065218 · doc4.xml · nonDerivative · entry 3

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Indirect · Portera Family Trust

Disclosed balance after: 29,645

F2 · kind: Transfer from direct to indirect.

F2 · price: Transfer from direct to indirect.

Read SEC document
October 24, 2014 Filed Oct 29, 2014 18:35 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 OtherCommon Stock 17,645 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-14-065218 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 68,406

F2 · kind: Transfer from direct to indirect.

F2 · price: Transfer from direct to indirect.

Read SEC document
October 22, 2014 Filed Oct 23, 2014 19:34 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 1,590 $130.54 $207,558.60
Disclosure

SEC source: 0001209191-14-064470 · doc4.xml · nonDerivative · entry 5

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,327

F1 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 22, 2014.

Read SEC document
October 22, 2014 Filed Oct 23, 2014 19:34 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 2,567 $130.54 $335,096.18
Disclosure

SEC source: 0001209191-14-064470 · doc4.xml · nonDerivative · entry 4

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 97,760

F1 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 22, 2014.

Read SEC document
October 22, 2014 Filed Oct 23, 2014 19:34 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 3,423 $130.54 $446,838.42
Disclosure

SEC source: 0001209191-14-064470 · doc4.xml · nonDerivative · entry 3

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 94,337

F1 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 22, 2014.

Read SEC document
October 22, 2014 Filed Oct 23, 2014 19:34 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 4,279 $130.54 $558,580.66
Disclosure

SEC source: 0001209191-14-064470 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 90,058

F1 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 22, 2014.

Read SEC document
October 22, 2014 Filed Oct 23, 2014 19:34 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 4,007 $130.54 $523,073.78
Disclosure

SEC source: 0001209191-14-064470 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 86,051

F1 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 22, 2014.

Read SEC document
October 09, 2014 Filed Oct 9, 2014 17:56 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 SaleCommon Stock 4,685 $130.13 $609,639.37
Disclosure

SEC source: 0001209191-14-062609 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 101,917

F1 · price: The price shown is a weighted average sale price for shares sold in multiple transactions; the sale prices ranged from $130.16 to $130.1116 per share. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.

Read SEC document
September 26, 2014 Filed Sep 30, 2014 15:38 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 2,319 $125.54 $291,127.26
Disclosure

SEC source: 0001209191-14-060200 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 106,602

Read SEC document
September 26, 2014 Filed Sep 30, 2014 15:38 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GrantCommon Stock 21,000 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-14-060200 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 108,921

F1 · shares: Grant was initially made in October 2013 subject to performance conditions concerning fiscal 2014, which have been deemed satisfied by the Compensation Committee of the Board of Directors. The shares of restricted stock subject to performance conditions vest ratably over a four year period from satisfaction based on continued employment with the Company. In addition, under the Stock Incentive Plan, long term employees are eligible for accelerated vesting upon the anniversary of their 25th, 30th and 35th years of service.

F2 · price: Not applicable. Grant of Restricted Stock Units.

Read SEC document
October 29, 2013 Filed Oct 30, 2013 19:14 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 SaleCommon Stock 14,900 $118.29 $1,762,521.00
Disclosure

SEC source: 0001209191-13-049815 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Indirect · Portera Family Trust

Disclosed balance after: 12,000

F1 · price: The price shown is a weighted average sale price for shares sold in multiple transactions; the sale prices ranged from $118.25 to $118.41 per share. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.

F2 · ownership.nature: The original filing incorrectly stated that shares were held directly rather than indirectly.

Read SEC document
October 22, 2013 Filed Oct 24, 2013 15:20 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 1,711 $117.81 $201,572.91
Disclosure

SEC source: 0001209191-13-049155 · doc4.xml · nonDerivative · entry 5

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 112,914

F1 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 22, 2013.

Read SEC document
October 22, 2013 Filed Oct 24, 2013 15:20 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 1,712 $117.81 $201,690.72
Disclosure

SEC source: 0001209191-13-049155 · doc4.xml · nonDerivative · entry 4

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 114,625

F1 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 22, 2013.

Read SEC document
October 22, 2013 Filed Oct 24, 2013 15:20 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 1,711 $117.81 $201,572.91
Disclosure

SEC source: 0001209191-13-049155 · doc4.xml · nonDerivative · entry 3

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 116,337

F1 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 22, 2013.

Read SEC document
October 22, 2013 Filed Oct 24, 2013 15:20 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 1,711 $117.81 $201,572.91
Disclosure

SEC source: 0001209191-13-049155 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 118,048

F1 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 22, 2013.

Read SEC document
October 22, 2013 Filed Oct 24, 2013 15:20 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 1,711 $117.81 $201,572.91
Disclosure

SEC source: 0001209191-13-049155 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 119,759

F1 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 22, 2013.

Read SEC document
September 20, 2013 Filed Sep 23, 2013 21:30 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 3,059 $117.94 $360,778.46
Disclosure

SEC source: 0001209191-13-045293 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 121,470

Read SEC document
September 20, 2013 Filed Sep 23, 2013 21:30 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GrantCommon Stock 25,000 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-13-045293 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 124,529

F1 · shares: Grant was initially made in October 2012 subject to performance conditions concerning fiscal 2013, which have been deemed satisfied by the Compensation Committee of the Board of Directors. The shares of restricted stock subject to performance conditions vest ratably over a four year period from satisfaction based on continued employment with the Company. In addition, under the Stock Incentive Plan, long term employees are eligible for accelerated vesting upon the anniversary of their 25th, 30th and 35th years of service.

F2 · price: Not applicable. Grant of Restricted Stock Units.

Read SEC document
September 20, 2013 Filed Nov 1, 2013 15:33 UTC Amendment COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GrantCommon Stock 1,907 $117.94 $224,911.58
Disclosure

SEC source: 0001209191-13-050114 · doc4a.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 123,377

F1 · shares: Represents additional restricted stock units ("RSUs") resulting from the upward adjustment of unvested RSUs in connection with the special cash dividend paid on December 10, 2012. The adjustment was required under the plan documents governing the grants. The RSUs reported are subject to the same vesting schedules as the RSUs granted in October 2012 subject to performance conditions concerning fiscal 2013, which were deemed satisfied by the Compensation Committee of the Board of Directors.

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December 31, 2012 Filed Jan 3, 2013 16:16 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 SaleCommon Stock 16,000 $97.34 $1,557,440.00
Disclosure

SEC source: 0001209191-13-000674 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 99,529

F1 · price: The price shown is a weighted average sale price for shares sold in multiple transactions; the sale prices ranged from $97.28 to $97.43 per share. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.

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December 12, 2012 Filed Dec 13, 2012 23:36 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GrantCommon Stock 2,541 $98.31 $249,805.71
Disclosure

SEC source: 0001209191-12-057553 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 115,529

F1 · shares: Represents additional restricted stock units ("RSUs") resulting from the upward adjustment of outstanding unvested RSUs by a factor of 1.0763 in connection with the $7.00 per share special cash dividend payable by the issuer to shareholders of record on December 10, 2012. The adjustment was required under the plan documents governing the grants. The RSUs reported are subject to the same vesting schedules as the original RSUs to which they relate.

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October 22, 2012 Filed Oct 24, 2012 21:21 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 1,407 $95.00 $133,665.00
Disclosure

SEC source: 0001209191-12-050453 · doc4.xml · nonDerivative · entry 4

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 112,988

F1 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 22, 2012.

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October 22, 2012 Filed Oct 24, 2012 21:21 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 1,407 $95.00 $133,665.00
Disclosure

SEC source: 0001209191-12-050453 · doc4.xml · nonDerivative · entry 3

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 114,395

F1 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 22, 2012.

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October 22, 2012 Filed Oct 24, 2012 21:21 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 1,407 $95.00 $133,665.00
Disclosure

SEC source: 0001209191-12-050453 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 115,802

F1 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 22, 2012.

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October 22, 2012 Filed Oct 24, 2012 21:21 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 1,407 $95.00 $133,665.00
Disclosure

SEC source: 0001209191-12-050453 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 117,209

F1 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 22, 2012.

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October 17, 2012 Filed Oct 19, 2012 15:56 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 1,943 $96.78 $188,043.54
Disclosure

SEC source: 0001209191-12-049986 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 118,616

F1 · price: This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on NASDAQ on October 17, 2012.

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September 26, 2012 Filed Sep 28, 2012 21:20 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 2,685 $101.00 $271,185.00
Disclosure

SEC source: 0001209191-12-046932 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 120,559

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September 26, 2012 Filed Sep 28, 2012 21:20 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GrantCommon Stock 25,000 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-12-046932 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 123,244

F1 · shares: Grant was initially made in October 2011 subject to performance conditions concerning fiscal 2012, which have been deemed satisfied by the Compensation Committee of the Board of Directors. The shares of restricted stock subject to performance conditions vest ratably over a four year period from satisfaction based on continued employment with the Company. In addition, under the Stock Incentive Plan, long term employees are eligible for accelerated vesting upon the anniversary of their 25th, 30th and 35th years of service.

F2 · price: Not applicable. Grant of Restricted Stock Units.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.