144 0001977926 XXXXXXXX LIVE 0001031308 BENTLEY SYSTEMS INC 001-39548 690 PENNSYLVANIA DR EXTON PA 19341 6104585000 Keith A Bentley 2012 Gift Trust FBO William Bentley Member of immediate family of any of the foregoing Bentley Systems, Inc., Class B Charles Schwab & Co., Inc.

3000 Schwab Way Westlake TX 76262

20000 917200.00 281770044 05/17/2023 Nasdaq Bentley Systems, Inc. Class B 02/23/2017 Gift Keith Bentley Y 08/14/1987 20000 02/23/2017 founders shares N KAB 2012 Gift FBO Robert

C/O 690 Stockston Drive Exton PA 19341

Bentley Systems, Inc. Class B 05/10/2023 16013 725931.00 KAB 2012 GST FBO Robert

C/O 690 Stockton Drive Exton PA 19341

Bentley Systems, Inc. Class B 05/10/2023 11442 518707.00 KAB 2012 GST FBO William

C/O 690 Stockton Drive Exton PA 19341

Bentley Systems, Inc. Class B 05/10/2023 11442 518707.00 KAB 2012 Gift FBO Sarah

C/O Stockton Drive Exton PA 19341

Bentley Systems, Inc. Class B 05/10/2023 11442 518707.00 KAB 2012 Gift FBO Sarah

C/O Stockton Drive Exton PA 19341

Bentley Systems,Inc. Class B 05/10/2023 11442 518707.00 KAB 2007 Gift FBO Sarah

C/O 690 Stockton Drive Exton PA 19341

Bentley Systems, Inc. Class B 05/10/2023 34313 1555544.00 KAB 2012 Gift FBO David

C/O Stockton Drive Exton PA 19341

Bentley Systems, Inc. Class B 05/10/2023 30000 1354761.00 KAB 2012 GST FBO David

C/O 690 Stockton Drive Exton PA 19341

Bentley Systems, Inc. Class B 05/10/2023 22876 1037058.00 KAB 2007 Gift FBO David

C/O Stockton Drive Exton PA 19431

Bentley Systems, Inc. Class B 05/10/2023 11442 518707.00 KAB 2012 Gift FBO Jennifer

C/O Stockton Drive Exton PA 19341

Bentley Systems, Inc. Class B 05/10/2023 91500 4148060.00 KAB 2012 GST FBO Charlene

C/O Stockton Drive Exton PA 19341

Bentley Systems, Inc. Class B 05/10/2023 11442 518707.00 KAB 2012 Gift FBO Charlene

C/O Stockton Drive Exton PA 19431

Bentley Systems, Inc. Class B 05/10/2023 137250 6222092.00 Table II - past 3 months sales - 5/10/23-5/12/23 05/17/2023 Corinne Bentley