Exhibit 23
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in Registration Statement No. 333-173811 on Form S-8 of our report dated June 19, 2020, appearing in this Annual Report on Form 11-K of the Simpson Manufacturing Co., Inc. 401(k) Profit Sharing Plan for the year ended December 31, 2019.
/s/ArmaninoLLP
San Ramon, California
June 19, 2020