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The reporting person undertakes to provide to UAL, any security holder of UAL or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the Form 4."}],"balance_after":8716,"source":{"system":"sec-edgar","filing":"0000899243-17-012848","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/100517/000089924317012848/doc4.xml","form_type":"4"}},{"id":4407555,"issuer":{"id":3116,"kind":"organization","name":"United Airlines Holdings, Inc.","symbol":"UAL"},"owners":[{"id":176279,"kind":"person","name":"Bonds Michael P","position":1,"cik":"0001330690","reported_name":"Bonds Michael P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP HR and Labor Relations"}}],"security":"Common Stock","published_at":"2017-03-03T21:31:11.000Z","date":"2017-03-01","kind":"sale","acquired":false,"shares":4739,"price":75.928,"value":359822.792,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $75.900 to $75.956 inclusive.  The reporting person undertakes to provide to UAL, any security holder of UAL or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the Form 4."}],"balance_after":18687,"source":{"system":"sec-edgar","filing":"0000899243-17-006370","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/100517/000089924317006370/doc4.xml","form_type":"4"}},{"id":4412528,"issuer":{"id":3116,"kind":"organization","name":"United Airlines Holdings, Inc.","symbol":"UAL"},"owners":[{"id":176279,"kind":"person","name":"Bonds Michael P","position":1,"cik":"0001330690","reported_name":"Bonds Michael P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP HR and Labor Relations"}}],"security":"Common Stock","published_at":"2017-03-02T23:10:22.000Z","date":"2017-02-28","kind":"tax_withholding","acquired":false,"shares":1461,"price":74.09,"value":108245.49,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"This transaction represents the withholding of shares to pay tax withholding obligations associated with the vesting of the restricted stock award granted on February 17, 2016. This award vests in three equal annual installments on February 28, 2017, February 28, 2018, and February 28, 2019."}],"balance_after":23426,"source":{"system":"sec-edgar","filing":"0000899243-17-006132","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/100517/000089924317006132/doc4.xml","form_type":"4"}},{"id":4412527,"issuer":{"id":3116,"kind":"organization","name":"United Airlines Holdings, Inc.","symbol":"UAL"},"owners":[{"id":176279,"kind":"person","name":"Bonds Michael P","position":1,"cik":"0001330690","reported_name":"Bonds Michael P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP HR and Labor Relations"}}],"security":"Common Stock","published_at":"2017-03-02T23:10:22.000Z","date":"2017-02-28","kind":"tax_withholding","acquired":false,"shares":1035,"price":74.09,"value":76683.15,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"This transaction represents the withholding of shares to pay tax withholding obligations associated with the vesting of the restricted stock award granted on February 18, 2015. 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This award vests in three equal annual installments on February 28, 2015, February 28, 2016, and February 28, 2017."}],"balance_after":25922,"source":{"system":"sec-edgar","filing":"0000899243-17-006132","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/100517/000089924317006132/doc4.xml","form_type":"4"}},{"id":4412525,"issuer":{"id":3116,"kind":"organization","name":"United Airlines Holdings, Inc.","symbol":"UAL"},"owners":[{"id":176279,"kind":"person","name":"Bonds Michael P","position":1,"cik":"0001330690","reported_name":"Bonds Michael P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP HR and Labor Relations"}}],"security":"Common Stock","published_at":"2017-03-02T23:10:22.000Z","date":"2017-02-28","kind":"sale","acquired":false,"shares":25464,"price":74.121,"value":1887417.144,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $74.000 to $75.210 inclusive.  The reporting person undertakes to provide to UAL, any security holder of UAL or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the Form 4."}],"balance_after":27401,"source":{"system":"sec-edgar","filing":"0000899243-17-006132","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/100517/000089924317006132/doc4.xml","form_type":"4"}},{"id":4423228,"issuer":{"id":3116,"kind":"organization","name":"United Airlines Holdings, Inc.","symbol":"UAL"},"owners":[{"id":176279,"kind":"person","name":"Bonds Michael P","position":1,"cik":"0001330690","reported_name":"Bonds Michael P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP HR and Labor Relations"}}],"security":"Restricted Stock Units","published_at":"2017-02-27T22:36:06.000Z","date":"2017-02-23","kind":"grant","acquired":true,"shares":9764,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit (\"RSU\") represents the economic equivalent of one share of  UAL common stock and shall be settled in shares of  UAL common stock upon vesting."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The RSUs vest in three installments of 3,254 RSUs on February 28, 2018, 3,255 RSUs on February 28, 2019 and 3,255 RSUs on February 28, 2020."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The RSUs vest in three installments of 3,254 RSUs on February 28, 2018, 3,255 RSUs on February 28, 2019 and 3,255 RSUs on February 28, 2020."}],"balance_after":9764,"derivative":{"underlying":"Common Stock","underlying_shares":9764},"source":{"system":"sec-edgar","filing":"0000899243-17-005437","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/100517/000089924317005437/doc4.xml","form_type":"4"}}]}