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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."}],"balance_after":25611,"source":{"system":"sec-edgar","filing":"0001209191-12-050446","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919112050446/doc4.xml","form_type":"4"}},{"id":190429,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11691,"kind":"person","name":"LIBENSON RICHARD M","position":1,"cik":"0001187964","reported_name":"LIBENSON RICHARD M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2012-10-24T21:14:13.000Z","date":"2012-10-22","kind":"grant","acquired":true,"shares":3000,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Grant of Restricted Stock Units.  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Grant of Restricted Stock Units."}],"balance_after":59000,"source":{"system":"sec-edgar","filing":"0001209191-12-050446","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919112050446/doc4.xml","form_type":"4"}},{"id":190787,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11691,"kind":"person","name":"LIBENSON RICHARD M","position":1,"cik":"0001187964","reported_name":"LIBENSON RICHARD M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2012-10-09T22:31:00.000Z","date":"2011-12-05","kind":"other","acquired":true,"shares":6000,"ownership":{"direct":false,"nature":"Family Trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Transfer from direct to indirect."}],"balance_after":45278,"source":{"system":"sec-edgar","filing":"0001209191-12-048799","document":"doc5.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919112048799/doc5.xml","form_type":"5"}},{"id":190786,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11691,"kind":"person","name":"LIBENSON RICHARD M","position":1,"cik":"0001187964","reported_name":"LIBENSON RICHARD M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2012-10-09T22:31:00.000Z","date":"2011-12-05","kind":"other","acquired":false,"shares":6000,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Transfer from direct to indirect."}],"balance_after":6000,"source":{"system":"sec-edgar","filing":"0001209191-12-048799","document":"doc5.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919112048799/doc5.xml","form_type":"5"}},{"id":194381,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11691,"kind":"person","name":"LIBENSON RICHARD M","position":1,"cik":"0001187964","reported_name":"LIBENSON RICHARD M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2012-04-16T14:40:41.000Z","date":"2012-04-13","kind":"grant","acquired":true,"shares":50000,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Vests one-third on October 22, 2012 and one-third annually on October 22 for the following two years."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Not applicable. Grant of Restricted Stock Units."}],"balance_after":56000,"source":{"system":"sec-edgar","filing":"0001209191-12-023080","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919112023080/doc4.xml","form_type":"4"}},{"id":198597,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11691,"kind":"person","name":"LIBENSON RICHARD M","position":1,"cik":"0001187964","reported_name":"LIBENSON RICHARD M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2011-10-24T22:43:33.000Z","date":"2011-10-22","kind":"grant","acquired":true,"shares":3000,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Vests one-third on October 22, 2012 and one-third annually on October 22 for the following two years."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Not applicable. Grant of Restricted Stock Units."}],"balance_after":12000,"source":{"system":"sec-edgar","filing":"0001209191-11-052523","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919111052523/doc4.xml","form_type":"4"}},{"id":204076,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11691,"kind":"person","name":"LIBENSON RICHARD M","position":1,"cik":"0001187964","reported_name":"LIBENSON RICHARD M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2011-04-11T23:17:35.000Z","date":"2011-04-11","kind":"sale","acquired":false,"shares":7525,"price":76.16,"value":573104.0,"ownership":{"direct":false,"nature":"Family Trust"},"balance_after":39278,"source":{"system":"sec-edgar","filing":"0001209191-11-022525","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919111022525/doc4.xml","form_type":"4"}},{"id":204075,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11691,"kind":"person","name":"LIBENSON RICHARD M","position":1,"cik":"0001187964","reported_name":"LIBENSON RICHARD M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2011-04-11T23:17:35.000Z","date":"2011-04-11","kind":"sale","acquired":false,"shares":7715,"ownership":{"direct":false,"nature":"Non-Exempt Trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Shares were sold as follows:\n\n3100 @ 76.0900\n4203 @ 76.0910\n300  @ 76.1000\n112  @ 76.1002"}],"balance_after":63317,"source":{"system":"sec-edgar","filing":"0001209191-11-022525","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919111022525/doc4.xml","form_type":"4"}},{"id":210516,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11691,"kind":"person","name":"LIBENSON RICHARD M","position":1,"cik":"0001187964","reported_name":"LIBENSON RICHARD M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2010-10-26T21:22:24.000Z","date":"2010-10-22","kind":"grant","acquired":true,"shares":3000,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Vests one-third on October 22, 2011 and one-third annually on October 22 for the following two years."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Not applicable. Grant of Restricted Stock Units."}],"balance_after":9000,"source":{"system":"sec-edgar","filing":"0001209191-10-051677","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919110051677/doc4.xml","form_type":"4"}},{"id":211088,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11691,"kind":"person","name":"LIBENSON RICHARD M","position":1,"cik":"0001187964","reported_name":"LIBENSON RICHARD M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option","published_at":"2010-10-12T14:43:40.000Z","date":"2010-10-08","kind":"exercise","acquired":false,"shares":12000,"price":37.35,"value":448200.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":37.35,"exercise_date":"2004-04-01","expiration_date":"2014-04-01","underlying":"Common 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64.1700\n700  @ 64.1800\n763  @ 64.1900\n1573 @ 64.2000\n3127 @ 64.2100\n700  @ 64.2300\n1500 @ 64.2400\n100  @ 64.2700\n2484 @ 64.3100\n200  @ 64.3200\n489  @ 64.3300\n1600 @ 64.3400\n927  @ 64.3500\n2200 @ 64.3600\n100  @ 64.3650\n400  @ 64.3700\n2091 @ 64.3800\n500  @ 64.3900\n258  @ 64.4000\n490  @ 64.4100\n2402 @ 64.4200\n300  @ 64.4300\n1262 @ 64.4400\n696  @ 64.4500\n100  @ 64.4600\n1400 @ 64.4700\n1600 @ 64.4800\n500  @ 64.5000\n801  @ 64.5200\n6148 @ 64.5300\n2600 @ 64.5301\n100  @ 64.5400\n986  @ 64.5500\n14   @ 64.5600\n1700 @ 64.5701\n52   @ 64.6000\n1800 @ 64.7000\n2000 @ 64.7101"}],"balance_after":6000,"source":{"system":"sec-edgar","filing":"0001209191-10-049963","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919110049963/doc4.xml","form_type":"4"}},{"id":211083,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP 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