X0306 4 2021-08-12 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 Common Stock $.01 Par Value 2021-08-12 4 S 0 2309 52.25 D 150172 D Common Stock $.01 Par Value 2021-08-13 4 S 0 6000 52.28 D 144172 D Common Stock $.01 Par Value 478 I By 401(k) The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $52.10 to $52.31, inclusive. The reporting person undertakes to provide M.D.C. Holdings, Inc., any security holder of M.D.C. Holdings, Inc., 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. 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 2021-08-13