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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
September 14, 2021 Filed Sep 16, 2021 14:00 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 4,150 $458.41 $1,902,401.50
Disclosure

SEC source: 0001209191-21-056324 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,987

Read SEC document
September 14, 2021 Filed Sep 16, 2021 14:00 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GrantCommon Stock 9,926 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-21-056324 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,137

F1 · shares: 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 · price: Not applicable. Grant of Restricted Stock Units.

Read SEC document
August 13, 2021 Filed Aug 13, 2021 16:14 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 SaleCommon Stock 3,287 $445.50 $1,464,358.50
Disclosure

SEC source: 0001209191-21-051343 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Indirect · Portera Family Trust

Disclosed balance after: 1,789

Read SEC document
October 09, 2020 Filed Aug 13, 2021 16:14 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GiftCommon Stock 750 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-21-051343 · 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: 5,076

F1 · price: Personal gift.

Read SEC document
September 29, 2020 Filed Sep 29, 2020 17:24 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 SaleCommon Stock 6,000 $348.00 $2,088,000.00
Disclosure

SEC source: 0001209191-20-052284 · 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: 5,826

Read SEC document
September 16, 2020 Filed Sep 29, 2020 17:24 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 OtherCommon Stock 6,937 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-20-052284 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Indirect · Portera Family Trust

Disclosed balance after: 11,826

F1 · price: Transfer from direct to indirect.

Read SEC document
September 16, 2020 Filed Sep 29, 2020 17:24 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 OtherCommon Stock 6,937 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-20-052284 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,211

F1 · price: Transfer from direct to indirect.

Read SEC document
September 14, 2020 Filed Sep 15, 2020 22:52 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 4,903 $342.96 $1,681,542.69
Disclosure

SEC source: 0001209191-20-050575 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,148

Read SEC document
September 14, 2020 Filed Sep 15, 2020 22:52 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GrantCommon Stock 11,840 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-20-050575 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,051

F1 · shares: Grant was initially made in October 2019 subject to performance conditions concerning fiscal 2020, 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
January 10, 2020 Filed Sep 15, 2020 21:58 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GiftCommon Stock 300 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-20-050540 · doc5.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Indirect · Portera Family Trust

Disclosed balance after: 4,889

F1 · price: Personal gift.

Read SEC document
December 17, 2019 Filed Sep 15, 2020 21:58 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GiftCommon Stock 600 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-20-050540 · doc5.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Indirect · Portera Family Trust

Disclosed balance after: 5,189

F1 · price: Personal gift.

Read SEC document
October 30, 2019 Filed Oct 31, 2019 23:29 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 SaleCommon Stock 14,095 $299.52 $4,221,734.40
Disclosure

SEC source: 0001209191-19-054670 · 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: 5,789

Read SEC document
October 25, 2019 Filed Oct 31, 2019 23:29 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 OtherCommon Stock 9,637 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-19-054670 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Indirect · Portera Family Trust

Disclosed balance after: 19,884

F1 · price: Transfer from direct to indirect.

Read SEC document
October 25, 2019 Filed Oct 31, 2019 23:29 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 OtherCommon Stock 9,637 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-19-054670 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,211

F1 · price: Transfer from direct to indirect.

Read SEC document
October 22, 2019 Filed Oct 24, 2019 20:09 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 2,031 $299.97 $609,239.07
Disclosure

SEC source: 0001209191-19-053891 · doc4.xml · nonDerivative · entry 5

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,848

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, 2019.

Read SEC document
October 22, 2019 Filed Oct 24, 2019 20:09 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 2,246 $299.97 $673,732.62
Disclosure

SEC source: 0001209191-19-053891 · doc4.xml · nonDerivative · entry 4

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,879

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, 2019.

Read SEC document
October 22, 2019 Filed Oct 24, 2019 20:09 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 1,821 $299.97 $546,245.37
Disclosure

SEC source: 0001209191-19-053891 · doc4.xml · nonDerivative · entry 3

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,125

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, 2019.

Read SEC document
October 22, 2019 Filed Oct 24, 2019 20:09 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 1,143 $299.97 $342,865.71
Disclosure

SEC source: 0001209191-19-053891 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,946

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, 2019.

Read SEC document
October 22, 2019 Filed Oct 24, 2019 20:09 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 679 $299.97 $203,679.63
Disclosure

SEC source: 0001209191-19-053891 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,089

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, 2019.

Read SEC document
September 18, 2019 Filed Sep 20, 2019 23:43 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 3,550 $292.43 $1,038,126.50
Disclosure

SEC source: 0001209191-19-050398 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,768

Read SEC document
September 18, 2019 Filed Sep 20, 2019 23:43 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GrantCommon Stock 13,510 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-19-050398 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,318

F1 · shares: Grant was initially made in October 2018 subject to performance conditions concerning fiscal 2019, 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
March 11, 2019 Filed Mar 13, 2019 19:10 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 SaleCommon Stock 2,864 $228.53 $654,509.92
Disclosure

SEC source: 0001209191-19-019096 · doc4.xml · nonDerivative · entry 4

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,808

Read SEC document
March 11, 2019 Filed Mar 13, 2019 19:10 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 SaleCommon Stock 8,901 $228.50 $2,033,878.50
Disclosure

SEC source: 0001209191-19-019096 · doc4.xml · nonDerivative · entry 3

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,672

Read SEC document
November 06, 2018 Filed Sep 20, 2019 23:42 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GiftCommon Stock 1,200 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-19-050397 · doc5.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Indirect · Portera Family Trust

Disclosed balance after: 10,247

F1 · price: Personal gift.

Read SEC document
October 25, 2018 Filed Mar 13, 2019 19:10 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 OtherCommon Stock 3,768 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-19-019096 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Indirect · Portera Family Trust

Disclosed balance after: 11,447

F1 · price: Transfer from direct to indirect.

Read SEC document
October 25, 2018 Filed Mar 13, 2019 19:10 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 OtherCommon Stock 3,768 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-19-019096 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,573

F1 · price: Transfer from direct to indirect.

Read SEC document
October 22, 2018 Filed Oct 24, 2018 22:33 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 562 $229.06 $128,731.72
Disclosure

SEC source: 0001209191-18-056108 · doc4.xml · nonDerivative · entry 6

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,116

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 22, 2018.

Read SEC document
October 22, 2018 Filed Oct 24, 2018 22:33 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 608 $229.06 $139,268.48
Disclosure

SEC source: 0001209191-18-056108 · doc4.xml · nonDerivative · entry 5

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,678

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 22, 2018.

Read SEC document
October 22, 2018 Filed Oct 24, 2018 22:33 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 572 $229.06 $131,022.32
Disclosure

SEC source: 0001209191-18-056108 · doc4.xml · nonDerivative · entry 4

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,286

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 22, 2018.

Read SEC document
October 22, 2018 Filed Oct 24, 2018 22:33 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 679 $229.06 $155,531.74
Disclosure

SEC source: 0001209191-18-056108 · doc4.xml · nonDerivative · entry 3

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,858

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 22, 2018.

Read SEC document
October 22, 2018 Filed Oct 24, 2018 22:33 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 678 $229.06 $155,302.68
Disclosure

SEC source: 0001209191-18-056108 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,537

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 22, 2018.

Read SEC document
October 05, 2018 Filed Oct 24, 2018 22:33 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 OtherCommon Stock 7,472 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-18-056108 · 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: 7,679

F1 · price: Transfer from direct to indirect.

Read SEC document
October 05, 2018 Filed Oct 24, 2018 22:33 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 OtherCommon Stock 7,472 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-18-056108 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,215

F1 · price: Transfer from direct to indirect.

Read SEC document
October 02, 2018 Filed Oct 4, 2018 19:19 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 4,983 $236.35 $1,177,732.05
Disclosure

SEC source: 0001209191-18-054230 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 33,687

Read SEC document
October 02, 2018 Filed Oct 4, 2018 19:19 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GrantCommon Stock 12,455 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-18-054230 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 38,670

F1 · shares: Grant was initially made in October 2017 subject to performance conditions concerning fiscal 2018, 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 02, 2018 Filed Oct 30, 2018 22:45 UTC Amendment COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GrantCommon Stock 18,680 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-18-056564 · doc4a.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 44,895

F1 · shares: Reported incorrect number of shares in previous filing.

F2 · shares: Grant was initially made in October 2017 subject to performance conditions concerning fiscal 2018, 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.

F3 · price: Not applicable. Grant of Restricted Stock Units.

Read SEC document
December 18, 2017 Filed Dec 20, 2017 17:55 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 SaleCommon Stock 10,000 $193.09 $1,930,853.00
Disclosure

SEC source: 0001209191-17-066602 · doc4.xml · nonDerivative · entry 4

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Indirect · Portera Family Trust

Disclosed balance after: 207

F3 · shares: The price shown is a weighted average sale price for shares sold in multiple transactions; the sale prices ranged from $193.07 to $193.16 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 27, 2017 Filed Dec 20, 2017 17:55 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GiftCommon Stock 1,500 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-17-066602 · 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: 10,207

F2 · price: Personal gift.

Read SEC document
October 24, 2017 Filed Dec 20, 2017 17:55 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 OtherCommon Stock 3,947 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-17-066602 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Indirect · Portera Family Trust

Disclosed balance after: 11,707

F1 · price: Transfer from direct to indirect.

Read SEC document
October 24, 2017 Filed Dec 20, 2017 17:55 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 OtherCommon Stock 3,947 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-17-066602 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,841

F1 · price: Transfer from direct to indirect.

Read SEC document
October 22, 2017 Filed Oct 24, 2017 18:40 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 643 $160.77 $103,375.11
Disclosure

SEC source: 0001209191-17-057826 · doc4.xml · nonDerivative · entry 5

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,788

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 20, 2017.

Read SEC document
October 22, 2017 Filed Oct 24, 2017 18:40 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 606 $160.77 $97,426.62
Disclosure

SEC source: 0001209191-17-057826 · doc4.xml · nonDerivative · entry 4

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,431

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 20, 2017.

Read SEC document
October 22, 2017 Filed Oct 24, 2017 18:40 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 718 $160.77 $115,432.86
Disclosure

SEC source: 0001209191-17-057826 · doc4.xml · nonDerivative · entry 3

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,037

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 20, 2017.

Read SEC document
October 22, 2017 Filed Oct 24, 2017 18:40 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 718 $160.77 $115,432.86
Disclosure

SEC source: 0001209191-17-057826 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,755

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 20, 2017.

Read SEC document
October 22, 2017 Filed Oct 24, 2017 18:40 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 920 $160.77 $147,908.40
Disclosure

SEC source: 0001209191-17-057826 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 33,473

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 20, 2017.

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October 02, 2017 Filed Oct 3, 2017 21:23 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 Tax withholdingCommon Stock 5,543 $165.89 $919,528.27
Disclosure

SEC source: 0001209191-17-055271 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 33,767

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October 02, 2017 Filed Oct 3, 2017 21:23 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GrantCommon Stock 19,570 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-17-055271 · doc4.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,310

F1 · shares: Grant was initially made in October 2016 subject to performance conditions concerning fiscal 2017, 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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October 02, 2017 Filed Oct 5, 2017 21:31 UTC Amendment COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GrantCommon Stock 626 $165.89 $103,847.14
Disclosure

SEC source: 0001209191-17-056169 · doc4a.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,393

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 May 26, 2017. 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 2016 subject to performance conditions concerning fiscal 2017, which were deemed satisfied by the Compensation Committee of the Board of Directors.

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May 24, 2017 Filed May 26, 2017 01:47 UTC COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GrantCommon Stock 1,074 $173.01 $185,812.74
Disclosure

SEC source: 0001209191-17-035650 · doc4.xml · nonDerivative · entry 2

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,740

F2 · shares: Represents additional restricted stock units ("RSUs") resulting from the upward adjustment of outstanding unvested RSUs by a factor of 1.032, in connection with the special cash dividend to be paid by the issuer on May 26, 2017. The adjustment was required under applicable plan documents. The additional RSUs reported are subject to the same vesting schedules as the original unvested RSUs to which they relate.

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May 24, 2017 Filed Jan 9, 2018 16:23 UTC Amendment COSTCO WHOLESALE CORP /NEW COST · Entity 2803 GrantCommon Stock 448 $173.01 $77,508.48
Disclosure

SEC source: 0001209191-18-002867 · doc4a.xml · nonDerivative · entry 1

PORTERA JOSEPH P · CIK 0001184498 · Executive VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,114

F1 · shares: Represents additional restricted stock units ("RSUs") resulting from the upward adjustment of outstanding unvested RSUs by a factor of 1.032, in connection with the special cash dividend to be paid by the issuer on May 26, 2017. The adjustment was required under applicable plan documents. The additional RSUs reported are subject to the same vesting schedules as the original unvested RSUs to which they relate.

F2 · shares: Reported incorrect number of shares in previous filing.

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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.