X0306 4 2021-12-14 0 0001642896 Samsara Inc. IOT 0001895148 Phillips Dominic C/O SAMSARA INC. 350 RHODE ISLAND STREET 4TH FLOOR, SOUTH BUILDING SAN FRANCISCO CA 94103 0 1 0 0 See remarks Class A Common Stock 2021-12-14 4 C 0 2410023 0.00 A 2410023 D Class B Common Stock 0.00 2021-12-14 4 A 0 2804368 0.00 A Class B Common Stock 2804368 2804368 D Class B Common Stock 0.00 2021-12-14 4 F 0 394345 0.00 D Class A Common Stock 394345 2410023 D Class B Common Stock 0.00 2021-12-14 4 C 0 2410023 0.00 D Class A Common Stock 2410023 0 D The reported shares are represented by restricted stock units, or RSUs, of which 1,243,956 vested upon the effectiveness of the Issuer's registration statement in connection with its initial public offering of Class A Common Stock and the remaining shares vest as follows: (i) 885,900 vest in quarterly installments beginning on March 15, 2022 through December 15, 2023, (ii) 245,036 vest in quarterly installments beginning on March 15, 2022 through December 15, 2023 and (iii) 429,476 vest in quarterly installments beginning on March 15, 2022 through March 15, 2025. The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis. In an exempt disposition to the Issuer under Rule 16b-3(e), the Reporting Person remitted shares to the Issuer in connection with the satisfaction of tax withholding obligations arising out of the vesting of RSUs. Executive Vice President, Chief Financial Officer /s/ Adam Eltoukhy, attorney-in-fact on behalf of Dominic Phillips 2021-12-16