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The fair market value of KLA-Tencor common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA-Tencor common stock as reported on the vesting date."}],"balance_after":16628.917,"source":{"system":"sec-edgar","filing":"0001628280-17-001023","document":"wf-form4_148659603711604.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828017001023/wf-form4_148659603711604.xml","form_type":"4"}},{"id":143811,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2017-02-08T23:20:51.000Z","date":"2017-02-06","kind":"exercise","acquired":true,"shares":6250,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 6, 2013, the Reporting Person received a grant of RSUs covering 25,000 shares of KLA-Tencor common stock. On February 6, 2017, the Reporting Person vested in twenty-five percent (25%) of such RSUs."}],"balance_after":19028.917,"source":{"system":"sec-edgar","filing":"0001628280-17-001023","document":"wf-form4_148659603711604.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828017001023/wf-form4_148659603711604.xml","form_type":"4"}},{"id":147043,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock - Restricted Stock Units","published_at":"2016-11-15T02:00:33.000Z","date":"2016-11-11","kind":"grant","acquired":true,"shares":26764,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of KLA-Tencor common stock."},{"field":"shares","element":"transactionShares","label":"F2","text":"On November 11, 2016, the Reporting Person was granted RSUs for 26,764 shares of KLA-Tencor common stock which vest 25% annually beginning November 11, 2017, subject to continued service on each vesting date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Does not include performance-based RSUs held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals.  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The fair market value of KLA-Tencor common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA-Tencor common stock as reported on September 7, 2016."}],"balance_after":20460.917,"source":{"system":"sec-edgar","filing":"0001628280-16-019493","document":"wf-form4_147346300842005.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828016019493/wf-form4_147346300842005.xml","form_type":"4"}},{"id":148970,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2016-09-09T23:17:03.000Z","date":"2016-09-07","kind":"exercise","acquired":true,"shares":8343,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F6","text":"As noted in Footnote 2, on August 6, 2013, the Reporting Person received a grant of performance-based RSUs that, following the completion of fiscal year 2016, was determined by the Compensation Committee of KLA-Tencor's Board of directors (on September 7, 2016) to cover 16,687 shares of KLA-Tencor common stock. 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Following the completion of KLA-Tencor's audited financial statements for the 2016 fiscal year, on September 7, 2016 the Compensation Committee of KLA-Tencor's Board of Directors determined the level at which the corporate performance goals were attained and, based on the assessment, determined that the number of shares subject to the RSUs is 16,687."},{"field":"shares","element":"transactionShares","label":"F3","text":"The Reporting Person vested fifty percent (50%) of the performance-based RSUs upon the date on which the Compensation Committee of KLA-Tencor's Board of Directors determined the level at which the underlying performance goals were attained (September 7, 2016) and will vest in the remaining fifty percent (50%) upon his completion of four years of service following the grant date of the award (August 6, 2013). 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Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F5","text":"Reflects an increase of 16,687 RSUs in connection with the determination of the level at which the August 6, 2013 performance-based RSUs were attained, less the fifty percent (50%) of such award that vested upon such assessment, as described in footnote 3."}],"balance_after":66092,"source":{"system":"sec-edgar","filing":"0001628280-16-019493","document":"wf-form4_147346300842005.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828016019493/wf-form4_147346300842005.xml","form_type":"4"}},{"id":150102,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2016-08-09T23:13:21.000Z","date":"2016-08-07","kind":"tax_withholding","acquired":false,"shares":1912,"price":77.63,"value":148428.56,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F6","text":"Pursuant to such terms of the August 7, 2014 RSU grant, 1,912 shares of KLA-Tencor common stock were automatically withheld at vesting to cover required tax withholding.  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Because the vesting date of such RSUs occurred on a day on which the NASDAQ Stock Market was closed for trading, the fair market value of KLA-Tencor common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA-Tencor common stock as reported on the last completed trading day immediately prior to such vesting date."}],"balance_after":14720.917,"source":{"system":"sec-edgar","filing":"0001628280-16-018836","document":"wf-form4_147078438877047.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828016018836/wf-form4_147078438877047.xml","form_type":"4"}},{"id":150099,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2016-08-09T23:13:21.000Z","date":"2016-08-06","kind":"exercise","acquired":true,"shares":4413,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"On August 6, 2014, the Reporting Person received a grant of RSUs covering 17,650 shares of KLA-Tencor common stock.  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Because the vesting date of such RSUs occurred on a day on which the NASDAQ Stock Market was closed for trading, the fair market value of KLA-Tencor common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA-Tencor common stock as reported on the last completed trading day immediately prior to such vesting date."}],"balance_after":12610.917,"source":{"system":"sec-edgar","filing":"0001628280-16-018836","document":"wf-form4_147078438877047.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828016018836/wf-form4_147078438877047.xml","form_type":"4"}},{"id":150097,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2016-08-09T23:13:21.000Z","date":"2016-08-06","kind":"exercise","acquired":true,"shares":3337,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On August 6, 2013, the Reporting Person received a grant of restricted stock units (\"RSUs\") covering 13,350 shares of KLA-Tencor common stock.  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On August 2, 2016, the Reporting person vested in fifty percent (50%) of the performance-based RSUs."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 363 shares acquired by the Reporting Person under the KLA-Tencor Employee Stock Purchase Plan on June 30, 2016."}],"balance_after":7272.917,"source":{"system":"sec-edgar","filing":"0001628280-16-018538","document":"wf-form4_147034643727038.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828016018538/wf-form4_147034643727038.xml","form_type":"4"}},{"id":153000,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2016-05-06T21:08:02.000Z","date":"2016-05-04","kind":"sale","acquired":false,"shares":6343,"price":69.18,"value":438808.74,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2015."}],"balance_after":347.917,"source":{"system":"sec-edgar","filing":"0001628280-16-015828","document":"wf-form4_146256886897806.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828016015828/wf-form4_146256886897806.xml","form_type":"4"}},{"id":156517,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2016-02-10T22:14:25.000Z","date":"2016-02-08","kind":"sale","acquired":false,"shares":3844,"price":64.6,"value":248322.4,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2015."}],"balance_after":6690.917,"source":{"system":"sec-edgar","filing":"0001628280-16-010943","document":"wf-form4_145514245404034.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828016010943/wf-form4_145514245404034.xml","form_type":"4"}},{"id":156637,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2016-02-09T21:44:35.000Z","date":"2016-02-05","kind":"tax_withholding","acquired":false,"shares":2406,"price":65.51,"value":157617.06,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Pursuant to such terms of the February 6, 2013 RSU grant, 2,406 shares of KLA-Tencor common stock were automatically withheld at vesting to cover required tax withholding.  The fair market value of KLA-Tencor common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA-Tencor common stock as reported on the NASDAQ Stock Market on such determination date (February 5, 2016)."}],"balance_after":10534.917,"source":{"system":"sec-edgar","filing":"0001628280-16-010879","document":"wf-form4_145505426459050.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828016010879/wf-form4_145505426459050.xml","form_type":"4"}},{"id":156636,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2016-02-09T21:44:35.000Z","date":"2016-02-05","kind":"exercise","acquired":true,"shares":6250,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On February 6, 2013, the Reporting Person received a grant of restricted stock units (RSUs\") covering 25,000 shares of KLA-Tencor common stock.  On February 5, 2016, the Reporting Person vested twenty-five percent (25%) of such RSUs."}],"balance_after":12940.917,"source":{"system":"sec-edgar","filing":"0001628280-16-010879","document":"wf-form4_145505426459050.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828016010879/wf-form4_145505426459050.xml","form_type":"4"}},{"id":157888,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2016-01-06T22:12:02.000Z","date":"2016-01-04","kind":"sale","acquired":false,"shares":6343,"price":68.05,"value":431641.15,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2015."}],"balance_after":6690.917,"source":{"system":"sec-edgar","filing":"0001628280-16-010142","document":"wf-form4_145211831237353.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828016010142/wf-form4_145211831237353.xml","form_type":"4"}},{"id":159761,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-11-06T22:53:04.000Z","date":"2015-11-04","kind":"sale","acquired":false,"shares":6345,"price":66.29,"value":420610.05,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2015."}],"balance_after":13033.917,"source":{"system":"sec-edgar","filing":"0001628280-15-008475","document":"wf-form4_144685037413466.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015008475/wf-form4_144685037413466.xml","form_type":"4"}},{"id":161252,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-09-10T21:23:21.000Z","date":"2015-09-08","kind":"sale","acquired":false,"shares":785,"price":48.47,"value":38048.95,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2015."}],"balance_after":19378.917,"source":{"system":"sec-edgar","filing":"0001628280-15-007054","document":"wf-form4_144192019116278.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015007054/wf-form4_144192019116278.xml","form_type":"4"}},{"id":161336,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-09-08T23:49:32.000Z","date":"2015-09-03","kind":"tax_withholding","acquired":false,"shares":3425,"price":48.83,"value":167242.75,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F7","text":"Pursuant to such terms of the August 2, 2012 RSU grant, 3,425 shares of KLA-Tencor common stock were automatically withheld at vesting to cover required tax withholding.  The fair market value of KLA-Tencor common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA-Tencor common stock as reported on the NASDAQ Stock Market on such determination date (September 3, 2015)."}],"balance_after":20163.917,"source":{"system":"sec-edgar","filing":"0001628280-15-006999","document":"wf-form4_144175616244395.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015006999/wf-form4_144175616244395.xml","form_type":"4"}},{"id":161335,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-09-08T23:49:32.000Z","date":"2015-09-03","kind":"exercise","acquired":true,"shares":6563,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F6","text":"As noted in Footnote 2, on August 2, 2012, the Reporting Person received a grant of performance-based RSUs that, following the completion of fiscal year 2015, was determined by the Compensation Committee of KLA-Tencor's Board of Directors (on September 3, 2015) to cover, based on KLA-Tencor's financial performance, 13,125 shares of KLA-Tencor common stock.  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Following the completion of KLA-Tencor's audited financial statements for the 2015 fiscal year, on September 3, 2015 the Compensation Committee of KLA-Tencor's Board of Directors determined the level at which the corporate performance goals were attained and, based on the assessment, determined that the number of shares subject to the RSUs is 13,125."},{"field":"shares","element":"transactionShares","label":"F3","text":"The Reporting Person vested fifty percent (50%) of the performance-based RSUs upon the date on which the Compensation Committee of KLA-Tencor's Board of Directors determined the level at which the underlying performance goals were attained (September 3, 2015) and will vest in the remaining fifty percent (50%) upon his completion of four years of service following the grant date of the award (August 2, 2012).  The shares of common stock will be issued as the performance-based RSUs vest."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals.  Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F5","text":"Reflects an increase of 13,125 RSUs in connection with the determination of the level at which the August 2, 2012 performance-based RSUs were attained, less the fifty percent (50%) of such award that vested upon such assessment, as described in footnote 3."}],"balance_after":67398,"source":{"system":"sec-edgar","filing":"0001628280-15-006999","document":"wf-form4_144175616244395.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015006999/wf-form4_144175616244395.xml","form_type":"4"}},{"id":161845,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-08-12T21:00:59.000Z","date":"2015-08-10","kind":"sale","acquired":false,"shares":438,"price":52.92,"value":23178.96,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale is effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2015."}],"balance_after":17025.917,"source":{"system":"sec-edgar","filing":"0001628280-15-006546","document":"wf-form4_143941324977708.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015006546/wf-form4_143941324977708.xml","form_type":"4"}},{"id":161890,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-08-11T21:13:40.000Z","date":"2015-08-07","kind":"tax_withholding","acquired":false,"shares":1912,"price":52.35,"value":100093.2,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F8","text":"Pursuant to such terms of the August 7, 2014 RSU grant, 1,912 shares of KLA-Tencor common stock were automatically withheld at vesting to cover required tax withholding.  The fair market value of KLA-Tencor common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA-Tencor common stock as reported on the NASDAQ Stock Market on such vesting date."}],"balance_after":17463.917,"source":{"system":"sec-edgar","filing":"0001628280-15-006475","document":"wf-form4_143932759734446.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015006475/wf-form4_143932759734446.xml","form_type":"4"}},{"id":161889,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-08-11T21:13:40.000Z","date":"2015-08-07","kind":"exercise","acquired":true,"shares":3663,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F7","text":"On August 7, 2014, the Reporting Person received a grant of restricted stock units (\"RSUs\") covering 14,650 shares of KLA-Tencor common stock.  On August 7, 2015, the Reporting Person vested in twenty-five percent (25%) of such RSUs."}],"balance_after":19375.917,"source":{"system":"sec-edgar","filing":"0001628280-15-006475","document":"wf-form4_143932759734446.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015006475/wf-form4_143932759734446.xml","form_type":"4"}},{"id":161888,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-08-11T21:13:40.000Z","date":"2015-08-07","kind":"sale","acquired":false,"shares":410,"price":51.879,"value":21270.39,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale is effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2015."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"This transaction was executed in multiple trades at prices ranging from $51.74 to $52.02.  The price reported above reflects the weighted-average sales price.  The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer, full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":15712.917,"source":{"system":"sec-edgar","filing":"0001628280-15-006475","document":"wf-form4_143932759734446.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015006475/wf-form4_143932759734446.xml","form_type":"4"}},{"id":161887,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-08-11T21:13:40.000Z","date":"2015-08-07","kind":"sale","acquired":false,"shares":897,"price":51.852,"value":46511.244,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale is effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2015."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"This transaction was executed in multiple trades at prices ranging from $51.77 to $51.94.  The price reported above reflects the weighted-average sales price.  The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer, full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":16122.917,"source":{"system":"sec-edgar","filing":"0001628280-15-006475","document":"wf-form4_143932759734446.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015006475/wf-form4_143932759734446.xml","form_type":"4"}},{"id":161886,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-08-11T21:13:40.000Z","date":"2015-08-07","kind":"sale","acquired":false,"shares":7534,"price":51.862,"value":390728.308,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale is effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2015."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $51.76 to $51.98.  The price reported above reflects the weighted-average sales price.  The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer, full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":17019.917,"source":{"system":"sec-edgar","filing":"0001628280-15-006475","document":"wf-form4_143932759734446.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015006475/wf-form4_143932759734446.xml","form_type":"4"}},{"id":161885,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-08-11T21:13:40.000Z","date":"2015-08-07","kind":"sale","acquired":false,"shares":1124,"price":51.93,"value":58369.32,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale is effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2015."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $51.85 to $52.00.  The price reported above reflects the weighted-average sales price.  The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer, full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":24553.917,"source":{"system":"sec-edgar","filing":"0001628280-15-006475","document":"wf-form4_143932759734446.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015006475/wf-form4_143932759734446.xml","form_type":"4"}},{"id":161884,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-08-11T21:13:40.000Z","date":"2015-08-07","kind":"sale","acquired":false,"shares":399,"price":51.695,"value":20626.305,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale is effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2015."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $51.68 to $51.71.  The price reported above reflects the weighted-average sales price.  The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer, full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":25677.917,"source":{"system":"sec-edgar","filing":"0001628280-15-006475","document":"wf-form4_143932759734446.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015006475/wf-form4_143932759734446.xml","form_type":"4"}},{"id":161926,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock - Restricted Stock Units","published_at":"2015-08-10T21:24:27.000Z","date":"2015-08-06","kind":"grant","acquired":true,"shares":17650,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F3","text":"Each RSU represents a contingent right to receive one share of KLA-Tencor common stock."},{"field":"shares","element":"transactionShares","label":"F4","text":"Represents a grant of RSUs subject only to service-vesting requirements.  The Reporting Person will vest twenty-five percent (25%) of the RSUs on the one-year anniversary of the grant date (August 6, 2016) and an additional twenty-five percent (25%) on each annual anniversary of the grant date thereafter through August 6, 2019, in each case subject to the Reporting Person continuing as a service provider to KLA-Tencor through the applicable vesting date.  The shares of common stock will be issued as the RSUs vest."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F5","text":"Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals.  Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made."}],"balance_after":64499,"source":{"system":"sec-edgar","filing":"0001628280-15-006412","document":"wf-form4_143924185772797.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015006412/wf-form4_143924185772797.xml","form_type":"4"}},{"id":161925,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-08-10T21:24:27.000Z","date":"2015-08-06","kind":"tax_withholding","acquired":false,"shares":1742,"price":51.95,"value":90496.9,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Pursuant to such terms of the August 6, 2013 RSU grant, 1,742 shares of KLA-Tencor common stock were automatically withheld at vesting to cover required tax withholding. The fair market value of KLA-Tencor common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA-Tencor common stock as reported on the NASDAQ Stock Market on such vesting date."}],"balance_after":26076.917,"source":{"system":"sec-edgar","filing":"0001628280-15-006412","document":"wf-form4_143924185772797.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015006412/wf-form4_143924185772797.xml","form_type":"4"}},{"id":161924,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-08-10T21:24:27.000Z","date":"2015-08-06","kind":"exercise","acquired":true,"shares":3338,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On August 6, 2013, the Reporting Person received a grant of restricted stock units (\"RSUs\") covering 13,350 shares of KLA-Tencor common stock.  On August 6, 2015, the Reporting Person vested in twenty-five percent (25%) of such RSUs."}],"balance_after":27818.917,"source":{"system":"sec-edgar","filing":"0001628280-15-006412","document":"wf-form4_143924185772797.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015006412/wf-form4_143924185772797.xml","form_type":"4"}},{"id":162052,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-08-06T21:44:43.000Z","date":"2015-08-04","kind":"tax_withholding","acquired":false,"shares":3914,"price":51.85,"value":202940.9,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Pursuant to such terms of the August 4, 2011 RSU grant, 3,914 shares of KLA-Tencor common stock were automatically withheld at vesting to cover required tax withholding.  The fair market value of KLA-Tencor common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA-Tencor common stock as reported on the NASDAQ Stock Market on such vesting date."}],"balance_after":24480.917,"source":{"system":"sec-edgar","filing":"0001628280-15-006259","document":"wf-form4a_143889747287082.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015006259/wf-form4a_143889747287082.xml","form_type":"4/A","original_submission_date":"2015-08-04"}},{"id":162051,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-08-06T21:44:43.000Z","date":"2015-08-04","kind":"exercise","acquired":true,"shares":7500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"On August 4, 2011, the Reporting Person received a grant of RSUs covering 15,000 shares of KLA-Tencor common stock.  On August 4, 2015, the Reporting Person vested in fifty percent (50%) of such RSUs."}],"balance_after":28394.917,"source":{"system":"sec-edgar","filing":"0001628280-15-006259","document":"wf-form4a_143889747287082.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015006259/wf-form4a_143889747287082.xml","form_type":"4/A","original_submission_date":"2015-08-04"}},{"id":162050,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-08-06T21:44:43.000Z","date":"2015-08-04","kind":"tax_withholding","acquired":false,"shares":3005,"price":51.85,"value":155809.25,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Pursuant to the terms of the August 4, 2011 performance-based RSU grant, 3,005 shares of KLA-Tencor common stock were automatically withheld at vesting to cover required tax withholding.  The fair market value of KLA-Tencor common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA-Tencor common stock as reported on the NASDAQ Stock Market on such vesting date."}],"balance_after":20894.917,"source":{"system":"sec-edgar","filing":"0001628280-15-006259","document":"wf-form4a_143889747287082.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015006259/wf-form4a_143889747287082.xml","form_type":"4/A","original_submission_date":"2015-08-04"}},{"id":162049,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-08-06T21:44:43.000Z","date":"2015-08-04","kind":"exercise","acquired":true,"shares":7500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On August 4, 2011, the Reporting Person received a grant of performance-based restricted stock units (\"RSUs\") that, following the completion of fiscal year 2013, was determined by the Compensation Committee of KLA-Tencor's Board of Directors (in August 2013) to cover, based on KLA-Tencor's financial performance during fiscal year 2013, 15,000 shares of KLA-Tencor common stock.  On August 4, 2015, the Reporting Person vested in fifty percent (50%) of the performance-based RSUs."}],"balance_after":23899.917,"source":{"system":"sec-edgar","filing":"0001628280-15-006259","document":"wf-form4a_143889747287082.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015006259/wf-form4a_143889747287082.xml","form_type":"4/A","original_submission_date":"2015-08-04"}},{"id":162179,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-08-04T21:39:15.000Z","date":"2015-08-02","kind":"tax_withholding","acquired":false,"shares":987,"price":53.05,"value":52360.35,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Pursuant to the terms of the August 2, 2012 RSU grant described in note (1) above, 987 shares of KLA-Tencor common stock were automatically withheld at vesting to cover required tax withholding. Because the vesting date of such RSUs occurred on a day on which the NASDAQ Stock Market was closed for trading, the fair market value of KLA-Tencor common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA-Tencor common stock as reported on the NASDAQ Stock Market on the last completed trading day immediately prior to such vesting date."}],"balance_after":16399.917,"source":{"system":"sec-edgar","filing":"0001628280-15-006058","document":"wf-form4_143872434570435.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015006058/wf-form4_143872434570435.xml","form_type":"4"}},{"id":162178,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-08-04T21:39:15.000Z","date":"2015-08-02","kind":"exercise","acquired":true,"shares":2625,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On August 2, 2012, the Reporting Person received a grant of restricted stock units (\"RSUs\") covering 10,500 shares of KLA-Tencor common stock.  On August 2, 2015, the Reporting Person vested in twenty-five percent (25%) of such RSUs."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 355 shares acquired by the Reporting Person under the KLA-Tencor Employee Stock Purchase Plan on June 30, 2015."}],"balance_after":17386.917,"source":{"system":"sec-edgar","filing":"0001628280-15-006058","document":"wf-form4_143872434570435.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015006058/wf-form4_143872434570435.xml","form_type":"4"}},{"id":162189,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-08-04T21:17:22.000Z","date":"2015-08-04","kind":"tax_withholding","acquired":true,"shares":4305,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":28204.917,"source":{"system":"sec-edgar","filing":"0001628280-15-006041","document":"wf-form4_143872303222420.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015006041/wf-form4_143872303222420.xml","form_type":"4"}},{"id":162188,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-08-04T21:17:22.000Z","date":"2015-08-04","kind":"exercise","acquired":true,"shares":7500,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":23899.917,"source":{"system":"sec-edgar","filing":"0001628280-15-006041","document":"wf-form4_143872303222420.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015006041/wf-form4_143872303222420.xml","form_type":"4"}},{"id":164087,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-05-07T21:07:39.000Z","date":"2015-05-05","kind":"sale","acquired":false,"shares":5204,"price":59.84,"value":311407.36,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on May 7, 2014."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Amount includes 67.917 shares of KLA-Tencor common stock acquired by Mr. Bell pursuant to an automatic reinvestment of dividends paid on KLA-Tencor common stock.  It was previously reported on a Form 4 filed on May 1, 2015 that Mr. Bell had acquired 67 shares of KLA-Tencor common stock pursuant to such automatic reinvestment of dividends paid on KLA-Tencor common stock."}],"balance_after":14406.917,"source":{"system":"sec-edgar","filing":"0001628280-15-003902","document":"wf-form4_143103284016096.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015003902/wf-form4_143103284016096.xml","form_type":"4"}},{"id":164272,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-05-01T23:04:14.000Z","date":"2015-03-03","kind":"purchase","acquired":true,"shares":67,"price":64.436,"value":4317.212,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Amount includes a total of 67 shares of KLA-Tencor common stock acquired by Mr. Bell pursuant to automatic reinvestment of the dividends paid on KLA-Tencor common stock.  Mr. Bell did not authorize the reinvestment of the dividends."}],"balance_after":19610,"source":{"system":"sec-edgar","filing":"0001628280-15-003459","document":"wf-form4_143052144442541.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015003459/wf-form4_143052144442541.xml","form_type":"4"}},{"id":166906,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-02-11T22:15:41.000Z","date":"2015-02-09","kind":"sale","acquired":false,"shares":3841,"price":62.01,"value":238180.41,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on May 7, 2014."}],"balance_after":19543,"source":{"system":"sec-edgar","filing":"0001628280-15-000615","document":"wf-form4_142369293140065.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015000615/wf-form4_142369293140065.xml","form_type":"4"}},{"id":167045,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-02-09T23:32:46.000Z","date":"2015-02-06","kind":"tax_withholding","acquired":false,"shares":2409,"price":62.61,"value":150827.49,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Pursuant to the terms of the February 6, 2013 RSU grant, 2,409 shares of KLA-Tencor common stock were automatically withheld at vesting to cover required tax withholding.  The fair market value of KLA-Tencor common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA-Tencor common stock as reported on the NASDAQ Stock Market on such vesting date."}],"balance_after":23384,"source":{"system":"sec-edgar","filing":"0001628280-15-000538","document":"wf-form4_142352475647111.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015000538/wf-form4_142352475647111.xml","form_type":"4"}},{"id":167044,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-02-09T23:32:46.000Z","date":"2015-02-06","kind":"grant","acquired":true,"shares":6250,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"On February 6, 2013, the Reporting Person received a grant of restricted stock units (\"RSUs\") covering 25,000 shares of KLA-Tencor common stock.  On February 6, 2015, the Reporting Person vested twenty-five percent (25%) of such RSUs."}],"balance_after":25793,"source":{"system":"sec-edgar","filing":"0001628280-15-000538","document":"wf-form4_142352475647111.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015000538/wf-form4_142352475647111.xml","form_type":"4"}},{"id":167043,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2015-02-09T23:32:46.000Z","date":"2015-02-05","kind":"sale","acquired":false,"shares":963,"price":63.15,"value":60813.45,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on May 7, 2014."}],"balance_after":19543,"source":{"system":"sec-edgar","filing":"0001628280-15-000538","document":"wf-form4_142352475647111.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000162828015000538/wf-form4_142352475647111.xml","form_type":"4"}},{"id":168102,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby 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plan adopted by the Reporting Person on May 7, 2014."}],"balance_after":29951,"source":{"system":"sec-edgar","filing":"0001181431-14-028862","document":"rrd414378.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/319201/000118143114028862/rrd414378.xml","form_type":"4"}},{"id":171034,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock - Restricted Stock Units","published_at":"2014-08-11T23:01:40.000Z","date":"2014-08-07","kind":"grant","acquired":true,"shares":14650,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of KLA-Tencor common stock."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents a grant of RSUs subject only to service-vesting requirements. The Reporting Person will vest in twenty-five percent (25%) of the RSUs on the one-year anniversary of the grant date (August 7, 2014) and an additional twenty-five percent (25%) on each annual anniversary of the grant date thereafter through August 7, 2018, in each case subject to the Reporting Person continuing as a service provider to KLA-Tencor through the applicable vesting date.  The shares of common stock will be issued as the RSUs vest."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals.  Any such holdings will be reported on Form 4 within two business days of the date such assessment is made."}],"balance_after":74062,"source":{"system":"sec-edgar","filing":"0001181431-14-028862","document":"rrd414378.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000118143114028862/rrd414378.xml","form_type":"4"}},{"id":171147,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2014-08-08T22:02:41.000Z","date":"2014-08-06","kind":"tax_withholding","acquired":false,"shares":1742,"price":71.88,"value":125214.96,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Pursuant to the terms of the August 6, 2013 RSU grant, 1,742 shares of KLA-Tencor common stock were automatically withheld at vesting to cover required tax withholding.  The fair market value of KLA-Tencor common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA-Tencor common stock as reported on the NASDAQ Stock Market on such vesting date."}],"balance_after":35691,"source":{"system":"sec-edgar","filing":"0001181431-14-028734","document":"rrd413914.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/319201/000118143114028734/rrd413914.xml","form_type":"4"}},{"id":171146,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2014-08-08T22:02:41.000Z","date":"2014-08-06","kind":"grant","acquired":true,"shares":3338,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On August 6, 2013, the Reporting Person received a grant of restricted stock units (\"RSUs\") covering 13,350 shares of KLA-Tencor common stock.  On August 6, 2014, the Reporting Person vested in twenty-five percent (25%) of such RSUs."}],"balance_after":37433,"source":{"system":"sec-edgar","filing":"0001181431-14-028734","document":"rrd413914.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000118143114028734/rrd413914.xml","form_type":"4"}},{"id":171219,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2014-08-06T23:27:48.000Z","date":"2014-08-05","kind":"tax_withholding","acquired":false,"shares":4305,"price":71.6,"value":308238.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Pursuant to the terms of the August 5, 2010 RSU grant described in note (3) above, 4,305 shares of KLA-Tencor common stock were automatically withheld at vesting to cover required tax withholding.  The fair market value of KLA-Tencor common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA-Tencor common stock as reported on the NASDAQ Stock Market on such vesting date."}],"balance_after":34095,"source":{"system":"sec-edgar","filing":"0001181431-14-028466","document":"rrd413905.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/319201/000118143114028466/rrd413905.xml","form_type":"4"}},{"id":171218,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2014-08-06T23:27:48.000Z","date":"2014-08-05","kind":"grant","acquired":true,"shares":8250,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"On August 5, 2010, the Reporting Person received a grant of RSUs covering 16,500 shares of KLA-Tencor common stock.  On August 5, 2014, the Reporting Person vested in fifty percent (50%) of such RSUs."}],"balance_after":38400,"source":{"system":"sec-edgar","filing":"0001181431-14-028466","document":"rrd413905.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/319201/000118143114028466/rrd413905.xml","form_type":"4"}},{"id":171217,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2014-08-06T23:27:48.000Z","date":"2014-08-05","kind":"tax_withholding","acquired":false,"shares":4305,"price":71.6,"value":308238.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Pursuant to the terms of the August 5, 2010 performance-based RSU grant described in note (1) above, 4,305 shares of KLA-Tencor common stock were automatically withheld at vesting to cover required tax withholding.  The fair market value of KLA-Tencor common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA-Tencor common stock as reported on the NASDAQ Stock Market on such vesting date."}],"balance_after":30150,"source":{"system":"sec-edgar","filing":"0001181431-14-028466","document":"rrd413905.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/319201/000118143114028466/rrd413905.xml","form_type":"4"}},{"id":171216,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2014-08-06T23:27:48.000Z","date":"2014-08-05","kind":"grant","acquired":true,"shares":8250,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On August 5, 2010, the Reporting Person received a grant of performance-based restricted stock units (\"RSUs\") that, following the completion of fiscal year 2012, was determined by the Compensation Committee of KLA-Tencor's Board of Directors to cover, based on KLA-Tencor's financial performance during fiscal years 2011 and 2012, 16,500 shares of KLA-Tencor common stock.  On August 5, 2014, the Reporting Person vested in fifty percent (50%) of such performance-based RSUs."}],"balance_after":34455,"source":{"system":"sec-edgar","filing":"0001181431-14-028466","document":"rrd413905.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000118143114028466/rrd413905.xml","form_type":"4"}},{"id":171277,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2014-08-05T21:00:59.000Z","date":"2014-08-02","kind":"tax_withholding","acquired":false,"shares":987,"price":71.631,"value":70699.797,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F5","text":"Pursuant to the terms of the August 2, 2012 RSU grant described in note (4) above, 987 shares of KLA-Tencor common stock were automatically withheld at vesting to cover required tax withholding.  Because the vesting date of such RSUs occurred on a day on which the NASDAQ Stock Market was closed for trading, the fair market value of KLA-Tencor common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA-Tencor common stock as reported on the NASDAQ Stock Market on the last completed trading day immediately prior to such vesting date."}],"balance_after":26205,"source":{"system":"sec-edgar","filing":"0001181431-14-028249","document":"rrd413524.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/319201/000118143114028249/rrd413524.xml","form_type":"4"}},{"id":171276,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2014-08-05T21:00:59.000Z","date":"2014-08-02","kind":"grant","acquired":true,"shares":2625,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"On August 2, 2012, the Reporting Person received a grant of RSUs covering 10,500 shares of KLA-Tencor common stock.  On August 2, 2014, the Reporting Person vested in twenty-five percent (25%) of such RSUs."}],"balance_after":27192,"source":{"system":"sec-edgar","filing":"0001181431-14-028249","document":"rrd413524.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/319201/000118143114028249/rrd413524.xml","form_type":"4"}},{"id":171275,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2014-08-05T21:00:59.000Z","date":"2014-08-02","kind":"tax_withholding","acquired":false,"shares":4560,"price":71.631,"value":326637.36,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Pursuant to the terms of the August 2, 2012 RSU grant described in note (1) above, 4,560 shares of KLA-Tencor common stock were automatically withheld at vesting to cover required tax withholding.  Because the vesting date of such RSUs occurred on a day on which the NASDAQ Stock Market was closed for trading, the fair market value of KLA-Tencor common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA-Tencor common stock as reported on the NASDAQ Stock Market on the last completed trading day immediately prior to such vesting date."}],"balance_after":24567,"source":{"system":"sec-edgar","filing":"0001181431-14-028249","document":"rrd413524.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/319201/000118143114028249/rrd413524.xml","form_type":"4"}},{"id":171274,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2014-08-05T21:00:59.000Z","date":"2014-08-02","kind":"grant","acquired":true,"shares":10400,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On August 2, 2012, the Reporting Person received a grant of restricted stock units (\"RSUs\") covering 20,800 shares of KLA-Tencor common stock.  On August 2, 2014, the Reporting Person vested in fifty percent (50%) of such RSUs."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 394 shares acquired by the Reporting Person under the KLA-Tencor Employee Stock Purchase Plan on June 30, 2014."}],"balance_after":29127,"source":{"system":"sec-edgar","filing":"0001181431-14-028249","document":"rrd413524.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000118143114028249/rrd413524.xml","form_type":"4"}},{"id":174021,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2014-05-07T21:00:28.000Z","date":"2014-05-05","kind":"sale","acquired":false,"shares":6960,"price":62.65,"value":436044.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on May 30, 2013."}],"balance_after":18333,"source":{"system":"sec-edgar","filing":"0001181431-14-018310","document":"rrd408650.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000118143114018310/rrd408650.xml","form_type":"4"}},{"id":176693,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2014-02-10T22:22:03.000Z","date":"2014-02-06","kind":"tax_withholding","acquired":false,"shares":2397,"price":61.83,"value":148206.51,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Pursuant to the terms of the February 6, 2013 RSU grant, 2,397 shares of KLA-Tencor common stock were automatically withheld at vesting to cover required tax withholding.  The fair market value of KLA-Tencor common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA-Tencor common stock as reported on the NASDAQ Stock Market on such vesting date."}],"balance_after":25293,"source":{"system":"sec-edgar","filing":"0001181431-14-006022","document":"rrd401810.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/319201/000118143114006022/rrd401810.xml","form_type":"4"}},{"id":176692,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2014-02-10T22:22:03.000Z","date":"2014-02-06","kind":"grant","acquired":true,"shares":6250,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On February 6, 2013, the Reporting Person received a grant of restricted stock units (\"RSUs\") covering 25,000 shares of KLA-Tencor common stock.  On February 6, 2014, the Reporting Person vested in twenty-five percent (25%) of such RSUs."}],"balance_after":27690,"source":{"system":"sec-edgar","filing":"0001181431-14-006022","document":"rrd401810.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000118143114006022/rrd401810.xml","form_type":"4"}},{"id":176697,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2014-02-07T21:28:17.000Z","date":"2014-02-05","kind":"sale","acquired":false,"shares":6965,"price":60.066,"value":418359.69,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on May 30, 2013."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $59.90 to $60.28.  The price reported above reflects the weighted-average sales price.  The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer, full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":21440,"source":{"system":"sec-edgar","filing":"0001181431-14-005780","document":"rrd401618.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000118143114005780/rrd401618.xml","form_type":"4"}},{"id":179299,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2013-11-07T22:00:39.000Z","date":"2013-11-05","kind":"sale","acquired":false,"shares":6967,"price":63.57,"value":442892.19,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on May 30, 2013."}],"balance_after":28405,"source":{"system":"sec-edgar","filing":"0001181431-13-057643","document":"rrd394448.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000118143113057643/rrd394448.xml","form_type":"4"}},{"id":181580,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2013-08-12T23:01:23.000Z","date":"2013-08-08","kind":"sale","acquired":false,"shares":897,"price":58.62,"value":52582.14,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 30, 2013."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $58.53 to $58.69.  The price reported above reflects the weighted-average sales price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer, full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":35372,"source":{"system":"sec-edgar","filing":"0001181431-13-044213","document":"rrd388011.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/319201/000118143113044213/rrd388011.xml","form_type":"4"}},{"id":181640,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock - Restricted Stock Units","published_at":"2013-08-08T22:00:47.000Z","date":"2013-08-06","kind":"grant","acquired":true,"shares":13350,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F3","text":"Each RSU represents a contingent right to receive one share of KLA-Tencor common stock."},{"field":"shares","element":"transactionShares","label":"F8","text":"Represents a grant of RSUs subject only to service-vesting requirements. The Reporting Person will vest in twenty-five percent (25%) of the RSUs on the one-year anniversary of the grant date (August 6, 2013) and an additional twenty-five percent (25%) on each annual anniversary of the grant date thereafter through August 6, 2017, in each case subject to the Reporting Person continuing as a service provider to KLA-Tencor through the applicable vesting date.  The shares of common stock will be issued as the RSUs vest."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F6","text":"Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals.  Any such holdings will be reported on Form 4 within two business days of the date such assessment is made."}],"balance_after":98525,"source":{"system":"sec-edgar","filing":"0001181431-13-043752","document":"rrd387741.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/319201/000118143113043752/rrd387741.xml","form_type":"4"}},{"id":181639,"issuer":{"id":2838,"kind":"organization","name":"KLA CORP","symbol":"KLAC"},"owners":[{"id":12196,"kind":"person","name":"Bell Bobby R","position":1,"cik":"0001498385","reported_name":"Bell Bobby R","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock - Restricted Stock Units","published_at":"2013-08-08T22:00:47.000Z","date":"2013-08-06","kind":"grant","acquired":true,"shares":15000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F3","text":"Each RSU represents a contingent right to receive one share of KLA-Tencor common stock."},{"field":"shares","element":"transactionShares","label":"F4","text":"On August 4, 2011, in addition to the RSUs granted on that date that were subject only to service-vesting requirements (which RSUs have been previously reported on Form 4), the Reporting Person was also granted RSUs covering up to 15,000 shares of KLA-Tencor common stock, subject to both performance-vesting and service-vesting requirements. This is the performance-based RSU award that is described in footnote (1) above.  Following the completion of KLA-Tencor's audited financial statements for the 2013 fiscal year, the Compensation Committee of KLA-Tencor's Board of Directors determined on August 6, 2013 the level at which the corporate performance goals were attained and, based on the assessment, determined that the number of shares subject to the RSUs is 15,000."},{"field":"shares","element":"transactionShares","label":"F5","text":"The Reporting Person vested in fifty percent (50%) of the performance-based RSUs upon the date on which the Compensation Committee of KLA-Tencor's Board of Directors determined the level at which the underlying performance goals were attained (August 6, 2013) and will vest in the remaining fifty percent (50%) upon his completion of four years of service following the grant date of the award (August 4, 2011).  The shares of common stock will be issued as the performance-based RSUs vest."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F6","text":"Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals.  Any such holdings will be reported on Form 4 within two business days of the date such assessment is made."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F7","text":"Reflects an increase of 15,000 RSUs in connection with the determination of the level at which the August 4, 2011 performance-based RSUs were attained, less the fifty percent (50%) of such award that vested upon such assessment, as described in footnote (1) above."}],"balance_after":85175,"source":{"system":"sec-edgar","filing":"0001181431-13-043752","document":"rrd387741.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/319201/000118143113043752/rrd387741.xml","form_type":"4"}}],"next_cursor":"2013-08-08T22:00:47.000000Z,181639"}