X0306 4 2018-04-10 0 0001477425 SendGrid, Inc. SEND 0001644897 Foundry Venture 2007, LLC 1050 WALNUT STREET SUITE 210 BOULDER CO 80302 0 0 1 0 0001581766 Foundry Group Select Fund, L.P. 1050 WALNUT STREET SUITE 210 BOULDER CO 80302 0 0 1 0 0001581764 Foundry Select Fund GP, LLC 1050 WALNUT STREET SUITE 210 BOULDER CO 80302 0 0 1 0 0001644896 Foundry Venture Capital 2007, L.P. 1050 WALNUT STREET, SUITE 210 SUITE 210 BOULDER CO 80302 0 0 1 0 0001065270 FELD BRADLEY A 1050 WALNUT STREET, SUITE 210 BOULDER CO 80302 0 0 1 0 0001644983 Levine Seth 1050 WALNUT STREET, SUITE 210 BOULDER CO 80302 0 0 1 0 0001248148 MCINTYRE RYAN A 1050 WALNUT STREET, SUITE 210 BOULDER CO 80302 0 0 1 0 0001248191 MENDELSON JASON A 1050 WALNUT STREET, SUITE 210 BOULDER CO 80302 0 0 1 0 Common Stock 2018-04-10 4 S 0 858505 22.86 D 1969846 I By: Foundry Group Select Fund, L.P. Common Stock 2018-04-10 4 S 0 2094213 22.86 D 4886496 I By: Foundry Venture Capital 2007, L.P. The Reporting Persons sold shares to the underwriters in connection with the closing of the Issuer's follow-on public offering. The reported sale price reflects the price at which the Reporting Persons sold shares to the underwriters, which is net of underwriting commissions. The shares are held by Foundry Group Select Fund, L.P. The general partner of Foundry Group Select Fund, L.P. is Foundry Select Fund GP, LLC and has voting and dispositive power over these shares. Brad Feld, Seth Levine, Ryan McIntyre and Jason Mendelson are the managing members of Foundry Select Fund GP, LLC and share voting and dispositive power over these shares. Each of Foundry Select Fund GP, LLC, Mr. Feld, Mr. Levine, Mr. McIntyre and Mr. Mendelson disclaims beneficial ownership of the shares except to the extent of his or its respective pecuniary interest therein. The shares are held by Foundry Venture Capital 2007, L.P. The general partner of Foundry Venture Capital 2007, L.P. is Foundry Venture 2007,LLC and has voting and dispositive power over these shares. Brad Feld, Seth Levine, Ryan McIntyre and Jason Mendelson are the managing members of Foundry Venture 2007, LLC and share voting and dispositive power over these shares. Each of Foundry Venture 2007, LLC, Mr. Feld, Mr. Levine, Mr. McIntyre and Mr. Mendelson disclaims beneficial ownership of the shares except to the extent of his or its respective pecuniary interest therein. /s/ Brad Feld, Managing Director of Foundry Venture 2007, LLC 2018-04-11 /s/ Brad Feld, Managing Director of Foundry Select Fund GP, LLC, the General Partner of Foundry Group Select Fund, L.P. 2018-04-11 /s/ Brad Feld, Managing Director of Foundry Select Fund GP, LLC 2018-04-11 /s/ Brad Feld, Managing Director of Foundry Venture 2007, LLC, the General Partner of Foundry Venture Capital 2007, L.P. 2018-04-11 /s/ Brad Feld 2018-04-11 /s/ Seth Levine 2018-04-11 /s/ Ryan McIntyre 2018-04-11 /s/ Jason Mendelson 2018-04-11