X0508 4 2023-10-02 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 1 Class A Common Stock 2023-10-02 4 S 0 38000 22.8635 D 1672000 I See footnote Class A Common Stock 90440 I See footnote Class A Common Stock 39582 D Class A Common Stock 281994 I See footnote The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 6, 2022. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $22.70 to $23.10, 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. The shares are held of record by the Armon Dadgar 2020 Charitable Trust. The shares are held of record by Black Swan III, LLC which the reporting person controls. The shares are held of record by the Armon Memaran-Dadgar Living Trust for which the reporting person serves as trustee. /s/ Paul Warenski, by power of attorney 2023-10-03