X0306 4 2021-03-30 0 0001477333 Cloudflare, Inc. NET 0001473289 SEIFERT THOMAS J C/O CLOUDFLARE, INC. 101 TOWNSEND STREET SAN FRANCISCO CA 94107 0 1 0 0 Chief Financial Officer Class A Common Stock 2021-03-30 4 C 0 20000 A 70156 D Class A Common Stock 2021-03-30 4 S 0 4292 63.9602 D 65864 D Class A Common Stock 2021-03-30 4 S 0 11270 65.404 D 54594 D Class A Common Stock 2021-03-30 4 S 0 4438 65.8518 D 50156 D Employee Stock Option (right to buy) 1.95 2021-03-30 4 M 0 20000 0.00 D 2027-06-29 Class B Common Stock 20000 754058 D Class B Common Stock 2021-03-30 4 M 0 20000 0.00 A Class A Common Stock 20000 303925 D Class B Common Stock 2021-03-30 4 C 0 20000 0.00 D Class A Common Stock 20000 283925 D Class B Common Stock Class A Common Stock 76100 76100 I See footnote Class B Common Stock Class A Common Stock 76100 76100 I See footnote Class B Common Stock Class A Common Stock 76100 76100 I See footnote Each share of Class B Common Stock is convertible at any time into Class A Common Stock on a one-to-one basis at the reporting person's election and has no expiration date. The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 9, 2020. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $63.53 to $64.37, 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 (3) through (5) 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 $64.70 to $65.68, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.70 to $66.18, inclusive. The option is subject to an early exercise provision and is immediately exercisable. One-fourth of the total shares vested on June 1, 2018 and the remaining shares vest in 36 equal monthly installments thereafter. The shares are held of record by Center Court 2020 Trust 1 UA 12/11/20, for which the reporting person serves as trustee. The shares are held of record by Center Court 2020 Trust 2 UA 12/11/20, for which the reporting person serves as trustee. The shares are held of record by Center Court 2020 Trust 3 UA 12/11/20, for which the reporting person serves as trustee. /s/ Lindsey Cochran, by power of attorney 2021-04-01