BENTLEY SYSTEMS INC

Rule 10b5-1 Trading Plans

On March 1, 2024, Michael M. Campbell, the Company’s Chief Product Officer, adopted a trading plan established pursuant to Rule 10b5‑1 of the Exchange Act, which is intended to satisfy the affirmative defense conditions of Rule 10b5‑1(c). The Company estimates that Mr. Campbell could sell up to an aggregate of 17,000 shares of its Class B common stock under the plan, though the final number of shares sold will depend upon a variety of factors, including applicable tax rates. Mr. Campbell’s plan expires on October 15, 2024.

On March 13, 2024, David R. Shaman, the Company’s Chief Legal Officer and Secretary, terminated a trading plan established pursuant to Rule 10b5‑1 of the Exchange Act, which was intended to satisfy the affirmative defense conditions of Rule 10b5‑1(c) and was adopted effective June 8, 2023 to sell an aggregate of 127,942 shares of our Class B common stock through March 31, 2024. On March 14, 2024, Mr. Shaman adopted a trading plan established pursuant to Rule 10b5‑1 of the Exchange Act, which is intended to satisfy the affirmative defense conditions of Rule 10b5‑1(c), to sell an aggregate of 127,942 shares of our Class B common stock. Mr. Shaman’s plan expires on March 7, 2025.

During the three months ended March 31, 2024, there were no other Company directors or executive officers whoadopted orterminated any contract, instruction or written plan for the purchase or sale of Company securities that was intended to satisfy the affirmative defense conditions of Rule 10b5‑1(c) or any “non-Rule 10b5‑1 trading arrangement.”