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The reporting person undertakes to provide to Bentley Systems, Incorporated, any security holder of Bentley Systems, Incorporated, 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 this footnote."}],"balance_after":13135577,"source":{"system":"sec-edgar","filing":"0001104659-21-094911","document":"tm2121736-8_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1031308/000110465921094911/tm2121736-8_4seq1.xml","form_type":"4"}},{"id":2629481,"issuer":{"id":438,"kind":"organization","name":"BENTLEY SYSTEMS INC","symbol":"BSY"},"owners":[{"id":38303,"kind":"person","name":"Bentley Barry J.","position":1,"cik":"0001825188","reported_name":"Bentley Barry J.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2021-07-20T20:13:55.000Z","date":"2021-07-19","kind":"sale","acquired":false,"shares":8020,"price":59.2765,"value":475397.53,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 9, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on July 19, 2021 at prices ranging from $59.21 to $59.37. The reporting person undertakes to provide to Bentley Systems, Incorporated, any security holder of Bentley Systems, Incorporated, 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 this footnote."}],"balance_after":13151957,"source":{"system":"sec-edgar","filing":"0001104659-21-093957","document":"tm2121736-5_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1031308/000110465921093957/tm2121736-5_4seq1.xml","form_type":"4"}},{"id":2629480,"issuer":{"id":438,"kind":"organization","name":"BENTLEY SYSTEMS INC","symbol":"BSY"},"owners":[{"id":38303,"kind":"person","name":"Bentley Barry J.","position":1,"cik":"0001825188","reported_name":"Bentley Barry J.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2021-07-20T20:13:55.000Z","date":"2021-07-19","kind":"sale","acquired":false,"shares":76824,"price":58.8383,"value":4520193.5592,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 9, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on July 19, 2021 at prices ranging from $58.21 to $59.20. The reporting person undertakes to provide to Bentley Systems, Incorporated, any security holder of Bentley Systems, Incorporated, 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 this footnote."}],"balance_after":13159977,"source":{"system":"sec-edgar","filing":"0001104659-21-093957","document":"tm2121736-5_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1031308/000110465921093957/tm2121736-5_4seq1.xml","form_type":"4"}},{"id":2629479,"issuer":{"id":438,"kind":"organization","name":"BENTLEY SYSTEMS INC","symbol":"BSY"},"owners":[{"id":38303,"kind":"person","name":"Bentley Barry J.","position":1,"cik":"0001825188","reported_name":"Bentley Barry J.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2021-07-20T20:13:55.000Z","date":"2021-07-19","kind":"sale","acquired":false,"shares":13500,"price":58.0079,"value":783106.65,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 9, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on July 19, 2021 at prices ranging from $57.21 to $58.20. The reporting person undertakes to provide to Bentley Systems, Incorporated, any security holder of Bentley Systems, Incorporated, 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 this footnote."}],"balance_after":13236801,"source":{"system":"sec-edgar","filing":"0001104659-21-093957","document":"tm2121736-5_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1031308/000110465921093957/tm2121736-5_4seq1.xml","form_type":"4"}},{"id":2629478,"issuer":{"id":438,"kind":"organization","name":"BENTLEY SYSTEMS INC","symbol":"BSY"},"owners":[{"id":38303,"kind":"person","name":"Bentley Barry J.","position":1,"cik":"0001825188","reported_name":"Bentley Barry J.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2021-07-20T20:13:55.000Z","date":"2021-07-16","kind":"sale","acquired":false,"shares":5207,"price":59.7956,"value":311355.6892,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 9, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on July 16, 2021 at prices ranging from $59.72 to $59.88. The reporting person undertakes to provide to Bentley Systems, Incorporated, any security holder of Bentley Systems, Incorporated, 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 this footnote."}],"balance_after":13250301,"source":{"system":"sec-edgar","filing":"0001104659-21-093957","document":"tm2121736-5_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1031308/000110465921093957/tm2121736-5_4seq1.xml","form_type":"4"}},{"id":2629477,"issuer":{"id":438,"kind":"organization","name":"BENTLEY SYSTEMS INC","symbol":"BSY"},"owners":[{"id":38303,"kind":"person","name":"Bentley Barry J.","position":1,"cik":"0001825188","reported_name":"Bentley Barry J.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2021-07-20T20:13:55.000Z","date":"2021-07-16","kind":"sale","acquired":false,"shares":160844,"price":59.1604,"value":9515595.3776,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 9, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on July 16, 2021 at prices ranging from $58.71 to $59.70. The reporting person undertakes to provide to Bentley Systems, Incorporated, any security holder of Bentley Systems, Incorporated, 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 this footnote."}],"balance_after":13255508,"source":{"system":"sec-edgar","filing":"0001104659-21-093957","document":"tm2121736-5_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1031308/000110465921093957/tm2121736-5_4seq1.xml","form_type":"4"}},{"id":2632367,"issuer":{"id":438,"kind":"organization","name":"BENTLEY SYSTEMS INC","symbol":"BSY"},"owners":[{"id":38303,"kind":"person","name":"Bentley Barry J.","position":1,"cik":"0001825188","reported_name":"Bentley Barry J.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2021-07-16T20:04:47.000Z","date":"2021-07-15","kind":"sale","acquired":false,"shares":17433,"price":60.793,"value":1059804.369,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 9, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on July 15, 2021 at prices ranging from $60.64 to $61.16. The reporting person undertakes to provide to Bentley Systems, Incorporated, any security holder of Bentley Systems, Incorporated, 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 this footnote."}],"balance_after":13416352,"source":{"system":"sec-edgar","filing":"0001104659-21-093060","document":"tm2121736-4_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1031308/000110465921093060/tm2121736-4_4seq1.xml","form_type":"4"}},{"id":2632366,"issuer":{"id":438,"kind":"organization","name":"BENTLEY SYSTEMS INC","symbol":"BSY"},"owners":[{"id":38303,"kind":"person","name":"Bentley Barry J.","position":1,"cik":"0001825188","reported_name":"Bentley Barry J.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2021-07-16T20:04:47.000Z","date":"2021-07-15","kind":"sale","acquired":false,"shares":93043,"price":60.0405,"value":5586348.2415,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 9, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on July 15, 2021 at prices ranging from $59.64 to $60.6350. The reporting person undertakes to provide to Bentley Systems, Incorporated, any security holder of Bentley Systems, Incorporated, 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 this footnote."}],"balance_after":13433785,"source":{"system":"sec-edgar","filing":"0001104659-21-093060","document":"tm2121736-4_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1031308/000110465921093060/tm2121736-4_4seq1.xml","form_type":"4"}},{"id":2632365,"issuer":{"id":438,"kind":"organization","name":"BENTLEY SYSTEMS INC","symbol":"BSY"},"owners":[{"id":38303,"kind":"person","name":"Bentley Barry J.","position":1,"cik":"0001825188","reported_name":"Bentley Barry J.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2021-07-16T20:04:47.000Z","date":"2021-07-14","kind":"sale","acquired":false,"shares":1649,"price":63.6473,"value":104954.3977,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 9, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on July 14, 2021 at prices ranging from $63.50 to $63.71. The reporting person undertakes to provide to Bentley Systems, Incorporated, any security holder of Bentley Systems, Incorporated, 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 this footnote."}],"balance_after":13526828,"source":{"system":"sec-edgar","filing":"0001104659-21-093060","document":"tm2121736-4_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1031308/000110465921093060/tm2121736-4_4seq1.xml","form_type":"4"}},{"id":2632364,"issuer":{"id":438,"kind":"organization","name":"BENTLEY SYSTEMS INC","symbol":"BSY"},"owners":[{"id":38303,"kind":"person","name":"Bentley Barry J.","position":1,"cik":"0001825188","reported_name":"Bentley Barry J.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2021-07-16T20:04:47.000Z","date":"2021-07-14","kind":"sale","acquired":false,"shares":17806,"price":62.9152,"value":1120268.0512,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 9, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on July 14, 2021 at prices ranging from $62.50 to $63.41. The reporting person undertakes to provide to Bentley Systems, Incorporated, any security holder of Bentley Systems, Incorporated, 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 this footnote."}],"balance_after":13528477,"source":{"system":"sec-edgar","filing":"0001104659-21-093060","document":"tm2121736-4_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1031308/000110465921093060/tm2121736-4_4seq1.xml","form_type":"4"}},{"id":2632363,"issuer":{"id":438,"kind":"organization","name":"BENTLEY SYSTEMS INC","symbol":"BSY"},"owners":[{"id":38303,"kind":"person","name":"Bentley Barry J.","position":1,"cik":"0001825188","reported_name":"Bentley Barry J.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2021-07-16T20:04:47.000Z","date":"2021-07-14","kind":"sale","acquired":false,"shares":96342,"price":61.8226,"value":5956112.9292,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 9, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on July 14, 2021 at prices ranging from $61.50 to $62.49. The reporting person undertakes to provide to Bentley Systems, Incorporated, any security holder of Bentley Systems, Incorporated, 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 this footnote."}],"balance_after":13546283,"source":{"system":"sec-edgar","filing":"0001104659-21-093060","document":"tm2121736-4_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1031308/000110465921093060/tm2121736-4_4seq1.xml","form_type":"4"}},{"id":2634233,"issuer":{"id":438,"kind":"organization","name":"BENTLEY SYSTEMS INC","symbol":"BSY"},"owners":[{"id":38303,"kind":"person","name":"Bentley Barry J.","position":1,"cik":"0001825188","reported_name":"Bentley Barry J.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2021-07-14T21:21:21.000Z","date":"2021-07-13","kind":"sale","acquired":false,"shares":51077,"price":64.4555,"value":3292193.5735,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 9, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on July 13, 2021 at prices ranging from $64.21 to $64.8150. The reporting person undertakes to provide to Bentley Systems, Incorporated, any security holder of Bentley Systems, Incorporated, 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 this footnote."}],"balance_after":13642625,"source":{"system":"sec-edgar","filing":"0001104659-21-092174","document":"tm2121736d3_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1031308/000110465921092174/tm2121736d3_4seq1.xml","form_type":"4"}},{"id":2634232,"issuer":{"id":438,"kind":"organization","name":"BENTLEY SYSTEMS INC","symbol":"BSY"},"owners":[{"id":38303,"kind":"person","name":"Bentley Barry J.","position":1,"cik":"0001825188","reported_name":"Bentley Barry J.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2021-07-14T21:21:21.000Z","date":"2021-07-13","kind":"sale","acquired":false,"shares":98347,"price":63.8038,"value":6274912.3186,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 9, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on July 13, 2021 at prices ranging from $63.21 to $64.2050. The reporting person undertakes to provide to Bentley Systems, Incorporated, any security holder of Bentley Systems, Incorporated, 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 this footnote."}],"balance_after":13693702,"source":{"system":"sec-edgar","filing":"0001104659-21-092174","document":"tm2121736d3_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1031308/000110465921092174/tm2121736d3_4seq1.xml","form_type":"4"}},{"id":2634231,"issuer":{"id":438,"kind":"organization","name":"BENTLEY SYSTEMS INC","symbol":"BSY"},"owners":[{"id":38303,"kind":"person","name":"Bentley Barry J.","position":1,"cik":"0001825188","reported_name":"Bentley Barry J.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2021-07-14T21:21:21.000Z","date":"2021-07-12","kind":"sale","acquired":false,"shares":6071,"price":64.629,"value":392362.659,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 9, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on July 12, 2021 at prices ranging from $64.25 to $65.00. The reporting person undertakes to provide to Bentley Systems, Incorporated, any security holder of Bentley Systems, Incorporated, 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 this footnote."}],"balance_after":13792049,"source":{"system":"sec-edgar","filing":"0001104659-21-092174","document":"tm2121736d3_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1031308/000110465921092174/tm2121736d3_4seq1.xml","form_type":"4"}},{"id":2634230,"issuer":{"id":438,"kind":"organization","name":"BENTLEY SYSTEMS INC","symbol":"BSY"},"owners":[{"id":38303,"kind":"person","name":"Bentley Barry J.","position":1,"cik":"0001825188","reported_name":"Bentley Barry J.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2021-07-14T21:21:21.000Z","date":"2021-07-12","kind":"sale","acquired":false,"shares":195830,"price":63.75,"value":12484162.5,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 9, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on July 12, 2021 at prices ranging from $63.22 to $64.21. The reporting person undertakes to provide to Bentley Systems, Incorporated, any security holder of Bentley Systems, Incorporated, 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 this footnote."}],"balance_after":13798120,"source":{"system":"sec-edgar","filing":"0001104659-21-092174","document":"tm2121736d3_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1031308/000110465921092174/tm2121736d3_4seq1.xml","form_type":"4"}},{"id":2664431,"issuer":{"id":438,"kind":"organization","name":"BENTLEY SYSTEMS INC","symbol":"BSY"},"owners":[{"id":38303,"kind":"person","name":"Bentley Barry J.","position":1,"cik":"0001825188","reported_name":"Bentley Barry J.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common 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