X0508 4 2024-02-02 0000773141 M.D.C. HOLDINGS, INC. MDC 0001643076 Martin Robert Nathaniel 4350 S. MONACO ST. SUITE 500 DENVER CO 80237 0 1 0 0 SVP and CFO 1 Common Stock $.01 Par Value 2024-02-02 4 A 0 35000 0 A 334962 D Common Stock $.01 Par Value 2024-02-02 4 F 0 15313 62.74 D 319649 D Common Stock $.01 Par Value 2024-02-03 4 F 0 6247 62.74 D 313402 D Common Stock $.01 Par Value 2024-02-03 4 F 0 7232 62.74 D 306170 D Common Stock $.01 Par Value 2024-02-04 4 F 0 1397 62.74 D 304773 D Common Stock $.01 Par Value 529 I By 401(k) Restricted stock vesting -- share withholding pursuant to irrevocable election made outside of blackout periods (May 8, 2023). Closing Price on February 2, 2024 Vesting of Performance Share Unit (PSU) award originally granted on July 14, 2021. PSU vesting - share withholding pursuant to irrevocable election made outside blackout periods (May 8, 2023). Unitized shares held in a stock fund in the Reporting Person's 401(k) Savings Plan which changes on a daily basis. Robert N. Martin 2024-02-05