X0306 4 2020-06-12 0 0001031308 BENTLEY SYSTEMS INC BSY 0001825456 Hollister David J. C/O BENTLEY SYSTEMS, INCORPORATED 685 STOCKTON DRIVE EXTON PA 19341 0 1 0 0 See Remarks Class B Common Stock 2020-06-12 4 A 0 6254 0 A 4193561 D Class B Common Stock 2020-07-10 4 A 0 680 0 A 4194241 D Class B Common Stock 2020-09-02 4 A 0 313324 0 A 4507565 D Class B Common Stock 2020-09-03 4 A 0 6266 0 A 4513831 D Class B Common Stock 2020-09-25 4 S 0 450000 22 D 4063831 D Class B Common Stock 20447 I By 401(k) Plan Represents dividend equivalent rights that accrued to the Reporting Person in connection with a dividend paid by the Issuer on awards previously granted and vest on the same terms as the awards to which they relate. Represents a grant of restricted stock that vested upon the consummation of the Issuer's initial public offering. Title: Chief Financial Officer and Chief Operations Advancement Officer /s/ Michael T. Fischette, as Attorney-in-Fact 2020-09-29