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The reporting person undertakes to provide to Northfield Bancorp, Inc., any security holder of Northfield Bancorp, Inc., 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 range set forth in this footnote (1) to this Form 4."}],"balance_after":78533,"source":{"system":"sec-edgar","filing":"0001493225-19-000075","document":"wf-form4_156443230379038.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1493225/000149322519000075/wf-form4_156443230379038.xml","form_type":"4"}},{"id":3489543,"issuer":{"id":29506,"kind":"organization","name":"Northfield Bancorp, Inc.","symbol":"NFBK"},"owners":[{"id":66701,"kind":"person","name":"Widmer Michael J","position":1,"cik":"0001409459","reported_name":"Widmer Michael J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP"}}],"security":"Common Stock","published_at":"2019-06-14T15:02:40.000Z","date":"2019-06-13","kind":"sale","acquired":false,"shares":4114,"price":15.1805,"value":62452.577,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares sold by the Reporting Person to satisfy tax obligations in connection with the vesting of an equity award."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in column 4 is a weighted average price.  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The shares were sold at prices ranging from $16.75 to $16.80, inclusive.  The reporting person undertakes to provide to Northfield Bancorp, Inc., any security holder of Northfield Bancorp, Inc., 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 range set forth in this footnote (1) to this Form 4."}],"balance_after":104150,"source":{"system":"sec-edgar","filing":"0001493225-18-000063","document":"wf-form4_152951829655802.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1493225/000149322518000063/wf-form4_152951829655802.xml","form_type":"4"}},{"id":3895461,"issuer":{"id":29506,"kind":"organization","name":"Northfield Bancorp, Inc.","symbol":"NFBK"},"owners":[{"id":66701,"kind":"person","name":"Widmer Michael J","position":1,"cik":"0001409459","reported_name":"Widmer Michael J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP"}}],"security":"Common Stock","published_at":"2018-06-13T18:03:56.000Z","date":"2018-06-12","kind":"sale","acquired":false,"shares":4542,"price":16.4142,"value":74553.2964,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares sold by the Reporting Person to satisfy tax obligations in connection with the vesting of an equity award."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in column 4 is a weighted average price.  The shares were sold at prices ranging from $16.33 to $16.57, inclusive.  The reporting person undertakes to provide to Northfield Bancorp, Inc., any security holder of Northfield Bancorp, Inc., 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 range set forth in this footnote (1) to this Form 4."}],"balance_after":120045,"source":{"system":"sec-edgar","filing":"0001493225-18-000058","document":"wf-form4_152891301926964.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1493225/000149322518000058/wf-form4_152891301926964.xml","form_type":"4"}},{"id":3899982,"issuer":{"id":29506,"kind":"organization","name":"Northfield Bancorp, Inc.","symbol":"NFBK"},"owners":[{"id":66701,"kind":"person","name":"Widmer Michael J","position":1,"cik":"0001409459","reported_name":"Widmer Michael J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP"}}],"security":"Common Stock","published_at":"2018-06-08T17:20:11.000Z","date":"2018-06-06","kind":"sale","acquired":false,"shares":10000,"price":16.7501,"value":167501.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in column 4 is a weighted average price.  The shares were sold at prices ranging from $16.75 to $16.76, inclusive.  The reporting person undertakes to provide to Northfield Bancorp, Inc., any security holder of Northfield Bancorp, Inc., 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 range set forth in this footnote (1) to this Form 4."}],"balance_after":124587,"source":{"system":"sec-edgar","filing":"0001493225-18-000055","document":"wf-form4_152847839463544.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1493225/000149322518000055/wf-form4_152847839463544.xml","form_type":"4"}},{"id":3905334,"issuer":{"id":29506,"kind":"organization","name":"Northfield Bancorp, Inc.","symbol":"NFBK"},"owners":[{"id":66701,"kind":"person","name":"Widmer Michael J","position":1,"cik":"0001409459","reported_name":"Widmer Michael J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP"}}],"security":"Common Stock","published_at":"2018-06-05T19:51:03.000Z","date":"2018-06-04","kind":"sale","acquired":false,"shares":8654,"price":16.5,"value":142791.0,"ownership":{"direct":true},"balance_after":134587,"source":{"system":"sec-edgar","filing":"0001493225-18-000050","document":"wf-form4_152822820142821.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1493225/000149322518000050/wf-form4_152822820142821.xml","form_type":"4"}},{"id":3905333,"issuer":{"id":29506,"kind":"organization","name":"Northfield Bancorp, Inc.","symbol":"NFBK"},"owners":[{"id":66701,"kind":"person","name":"Widmer Michael J","position":1,"cik":"0001409459","reported_name":"Widmer Michael J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP"}}],"security":"Common Stock","published_at":"2018-06-05T19:51:03.000Z","date":"2018-06-01","kind":"sale","acquired":false,"shares":2640,"price":16.5,"value":43560.0,"ownership":{"direct":true},"balance_after":143241,"source":{"system":"sec-edgar","filing":"0001493225-18-000050","document":"wf-form4_152822820142821.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1493225/000149322518000050/wf-form4_152822820142821.xml","form_type":"4"}},{"id":3914106,"issuer":{"id":29506,"kind":"organization","name":"Northfield Bancorp, Inc.","symbol":"NFBK"},"owners":[{"id":66701,"kind":"person","name":"Widmer Michael J","position":1,"cik":"0001409459","reported_name":"Widmer Michael J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP"}}],"security":"Common Stock","published_at":"2018-05-30T17:50:24.000Z","date":"2018-05-29","kind":"sale","acquired":false,"shares":1752,"price":16.0801,"value":28172.3352,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares sold by the Reporting Person to satisfy tax obligations in connection with the vesting of an equity award."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in column 4 is a weighted average price.  The shares were sold at prices ranging from $15.96 to $16.35, inclusive.  The reporting person undertakes to provide to Northfield Bancorp, Inc., any security holder of Northfield Bancorp, Inc., 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 range set forth in this footnote (1) to this Form 4."}],"balance_after":145881,"source":{"system":"sec-edgar","filing":"0001493225-18-000046","document":"wf-form4_152770255887560.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1493225/000149322518000046/wf-form4_152770255887560.xml","form_type":"4"}},{"id":4066171,"issuer":{"id":29506,"kind":"organization","name":"Northfield Bancorp, Inc.","symbol":"NFBK"},"owners":[{"id":66701,"kind":"person","name":"Widmer Michael J","position":1,"cik":"0001409459","reported_name":"Widmer Michael J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP"}}],"security":"Common Stock","published_at":"2018-02-12T19:14:19.000Z","date":"2018-02-09","kind":"sale","acquired":false,"shares":10000,"price":15.56,"value":155600.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in column 4 is a weighted average price.  The shares were sold at prices ranging from $15.55 to $15.59, inclusive.  The reporting person undertakes to provide to Northfield Bancorp, Inc., any security holder of Northfield Bancorp, Inc., 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 range set forth in this footnote (1) to this Form 4."}],"balance_after":147633,"source":{"system":"sec-edgar","filing":"0001493225-18-000012","document":"wf-form4_151846284498199.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1493225/000149322518000012/wf-form4_151846284498199.xml","form_type":"4"}},{"id":4436087,"issuer":{"id":29506,"kind":"organization","name":"Northfield Bancorp, Inc.","symbol":"NFBK"},"owners":[{"id":66701,"kind":"person","name":"Widmer Michael J","position":1,"cik":"0001409459","reported_name":"Widmer Michael J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP"}}],"security":"Common Stock","published_at":"2017-02-21T21:27:23.000Z","date":"2017-02-16","kind":"sale","acquired":false,"shares":35539,"price":18.08,"value":642545.12,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in column 4 is a weighted average price.  The shares were sold at prices ranging from $18.00 to $18.14, inclusive.  The reporting person undertakes to provide to Northfield Bancorp, Inc., any security holder of Northfield Bancorp, Inc., 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 range set forth in this footnote (1) to this Form 4."}],"balance_after":157633,"source":{"system":"sec-edgar","filing":"0001493225-17-000010","document":"wf-form4_148771243063709.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1493225/000149322517000010/wf-form4_148771243063709.xml","form_type":"4"}},{"id":4514270,"issuer":{"id":29506,"kind":"organization","name":"Northfield Bancorp, Inc.","symbol":"NFBK"},"owners":[{"id":66701,"kind":"person","name":"Widmer Michael J","position":1,"cik":"0001409459","reported_name":"Widmer Michael J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP"}}],"security":"Common Stock","published_at":"2016-12-21T22:33:41.000Z","date":"2016-12-16","kind":"sale","acquired":false,"shares":16982,"price":20.25,"value":343885.5,"ownership":{"direct":true},"balance_after":193172,"source":{"system":"sec-edgar","filing":"0001493225-16-000216","document":"wf-form4a_148235960776648.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1493225/000149322516000216/wf-form4a_148235960776648.xml","form_type":"4/A","original_submission_date":"2016-12-19"}},{"id":4514269,"issuer":{"id":29506,"kind":"organization","name":"Northfield Bancorp, Inc.","symbol":"NFBK"},"owners":[{"id":66701,"kind":"person","name":"Widmer Michael J","position":1,"cik":"0001409459","reported_name":"Widmer Michael J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP"}}],"security":"Common Stock","published_at":"2016-12-21T22:33:41.000Z","date":"2016-12-15","kind":"sale","acquired":false,"shares":15227,"price":20.28,"value":308803.56,"ownership":{"direct":true},"balance_after":210154,"source":{"system":"sec-edgar","filing":"0001493225-16-000216","document":"wf-form4a_148235960776648.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1493225/000149322516000216/wf-form4a_148235960776648.xml","form_type":"4/A","original_submission_date":"2016-12-19"}},{"id":4517011,"issuer":{"id":29506,"kind":"organization","name":"Northfield Bancorp, Inc.","symbol":"NFBK"},"owners":[{"id":66701,"kind":"person","name":"Widmer Michael J","position":1,"cik":"0001409459","reported_name":"Widmer Michael J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP"}}],"security":"Common Stock","published_at":"2016-12-19T21:21:58.000Z","date":"2016-12-16","kind":"sale","acquired":false,"shares":16982,"price":20.25,"value":343885.5,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"The Form 4 as originally filed incorrectly reported the transaction as a sale by the reporting person.  The Form 4, as amended by this Form 4/A, correctly reports the transaction as a sale by the reporting person's spouse."}],"balance_after":193172,"source":{"system":"sec-edgar","filing":"0001493225-16-000209","document":"wf-form4_148218250581159.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1493225/000149322516000209/wf-form4_148218250581159.xml","form_type":"4"}},{"id":4517010,"issuer":{"id":29506,"kind":"organization","name":"Northfield Bancorp, Inc.","symbol":"NFBK"},"owners":[{"id":66701,"kind":"person","name":"Widmer Michael J","position":1,"cik":"0001409459","reported_name":"Widmer Michael J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP"}}],"security":"Common Stock","published_at":"2016-12-19T21:21:58.000Z","date":"2016-12-15","kind":"sale","acquired":false,"shares":15227,"price":20.28,"value":308803.56,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"The Form 4 as originally filed incorrectly reported the transaction as a sale by the reporting person.  The Form 4, as amended by this Form 4/A, correctly reports the transaction as a sale by the reporting person's spouse."}],"balance_after":210154,"source":{"system":"sec-edgar","filing":"0001493225-16-000209","document":"wf-form4_148218250581159.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1493225/000149322516000209/wf-form4_148218250581159.xml","form_type":"4"}}]}