X0306 4 2022-03-15 0 0001786352 Bill.com Holdings, Inc. BILL 0001795497 Lacerte Rene A. C/O BILL.COM HOLDINGS, INC. 6220 AMERICA CENTER DR., SUITE 100 SAN JOSE CA 95002 1 1 0 0 President and CEO Common Stock 2022-03-15 4 M 0 10000 5.26 A 88970 D Common Stock 2022-03-15 4 S 0 768 167.4689 D 88202 D Common Stock 2022-03-15 4 S 0 1546 168.477 D 86656 D Common Stock 2022-03-15 4 S 0 1404 169.4858 D 85252 D Common Stock 2022-03-15 4 S 0 732 170.7137 D 84520 D Common Stock 2022-03-15 4 S 0 950 171.7358 D 83570 D Common Stock 2022-03-15 4 S 0 1000 172.721 D 82570 D Common Stock 2022-03-15 4 S 0 697 173.9325 D 81873 D Common Stock 2022-03-15 4 S 0 549 175.1325 D 81324 D Common Stock 2022-03-15 4 S 0 1847 175.9891 D 79477 D Common Stock 2022-03-15 4 S 0 507 176.81 D 78970 D Common Stock 1958749 I See Footnote Common Stock 135000 I See Footnote Common Stock 135000 I See Footnote Common Stock 163125 I See Footnote Common Stock 163125 I See Footnote Employee Stock Option (Right to Buy) 5.26 2022-03-15 4 M 0 10000 0.00 D 2028-08-01 Common Stock 10000 226456 D The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $166.96 to $167.86 per share, 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 range set forth in this footnote. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $168.05 to $168.91 per share, 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 range set forth in this footnote. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $169.10 to $170.09 per share, 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 range set forth in this footnote. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $170.28 to $171.23 per share, 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 range set forth in this footnote. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $171.29 to $172.12 per share, 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 range set forth in this footnote. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $172.37 to $173.29 per share, 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 range set forth in this footnote. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $173.42 to $174.31 per share, 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 range set forth in this footnote. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $174.47 to $175.46 per share, 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 range set forth in this footnote. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $175.49 to $176.48 per share, 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 range set forth in this footnote. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $176.49 to $177.36 per share, 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 range set forth in this footnote. The shares are held by Chung Lacerte Trust U/A dated February 15, 2004, Rene A. Lacerte and Joyce A. Chung, Trustees. The shares are held by a family trust with Rene A. Lacerte and Joyce A. Chung, as Trustors, and Rene A. Lacerte, Joyce A. Chung, and Daniel C. Chung, as Trustees. The shares are held by Ilio Irrevocable Trust, Rene Lacerte and Joyce Chung, Trustees. The shares are held by Nene Irrevocable Trust, Rene Lacerte and Joyce Chung, Trustees. The option vests 1/48th of the total shares monthly beginning September 2, 2018 until such time as the option is 100% vested, subject to the continuing service of the Reporting Person on each vesting date. /s/ Rajesh Aji, Attorney-in-Fact 2022-03-17