X0306 4 2021-12-09 0 0001720671 HashiCorp, Inc. HCP 0001894717 Dadgar Armon C/O HASHICORP, INC. 101 SECOND STREET, SUITE 700 SAN FRANCISCO CA 94105 1 1 1 0 Chief Technology Officer Common Stock 2021-12-09 4 S 0 14448 83.1044 D 962888 D Common Stock 2021-12-09 4 S 0 12248 83.9338 D 950640 D Common Stock 2021-12-09 4 S 0 6075 84.6499 D 944565 D Common Stock 2021-12-09 4 S 0 689 85.7996 D 943876 D Common Stock 2021-12-09 4 S 0 172 86.845 D 943704 D Common Stock 2021-12-09 4 S 0 862 88.017 D 942842 D Common Stock 15209288 I See footnote Common Stock 2339030 I See footnote Common Stock 700000 I See footnote Immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock, each share of Common Stock shall be reclassified into one share of Class B Common Stock. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $82.48 to $83.45, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, 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 footnotes (2) through (7) to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $83.48 to $84.46, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $84.48 to $85.47, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $85.50 to $86.35, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $86.69 to $87.00, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.95 to $88.22, inclusive. The shares are held of record by the Armon Dadgar 2020 Charitable Trust. The shares are held of record by the Armon Memaran-Dadgar Living Trust for which the reporting person serves as trustee. The shares are held of record by Black Swan III, LLC which the reporting person controls. /s/ Paul Warenski, by power of attorney 2021-12-13