Statement of Changes in Beneficial Ownership (4)

FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^* Rettig John R.	2. Issuer Name and Ticker or Trading Symbol Bill.com Holdings, Inc. [ BILL ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) CFO
(Last) (First) (Middle) C/O BILL.COM HOLDINGS, INC., 6220 AMERICA CENTER DR., SUITE 100	3. Date of Earliest Transaction (MM/DD/YYYY) 10/5/2021
(Street) SAN JOSE, CA 95002 (City) (State) (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	10/5/2021		M		4000	A	$5.26	83081	D
Common Stock	10/5/2021		M		1500	A	$8.76	84581	D
Common Stock	10/5/2021		M		1000	A	$69.37	85581	D
Common Stock	10/5/2021		S⁽¹⁾		700	A	$262.7871 ⁽²⁾	84881	D
Common Stock	10/5/2021		S⁽¹⁾		1000	D	$264.214 ⁽³⁾	83881	D
Common Stock	10/5/2021		S⁽¹⁾		1730	D	$265.4898 ⁽⁴⁾	82151	D
Common Stock	10/5/2021		S⁽¹⁾		1170	D	$266.4948 ⁽⁵⁾	80981	D
Common Stock	10/5/2021		S⁽¹⁾		1500	D	$267.5153 ⁽⁶⁾	79481	D
Common Stock	10/5/2021		S⁽¹⁾		400	D	$268.0875 ⁽⁷⁾	79081	D
Common Stock								78689	I	By Trust ⁽⁸⁾

*Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)*
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)			11. Nature of Indirect Beneficial Ownership (Instr. 4)
Employee Stock Option (Right to Buy)	$5.26	10/5/2021		M			4000	⁽⁹⁾	8/1/2028	Common Stock	4000	$0.00	56989	D
Employee Stock Option (Right to Buy)	$8.76	10/5/2021		M			1500	⁽¹⁰⁾	2/12/2029	Common Stock	1500	$0.00	81000	D
Employee Stock Option (Right to Buy)	$69.37	10/5/2021		M			1000	⁽¹¹⁾	5/27/2030	Common Stock	1000	$0.00	29000	D

Explanation of Responses:
(1)	The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.
(2)	The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $262.34 to $263.05 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.
(3)	The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $263.75 to $264.73 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.
(4)	The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $265.01 to $265.90 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.
(5)	The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $266.02 to $266.97 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.
(6)	The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $267.03 to $268.01 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.
(7)	The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $268.03 to $268.12 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.
(8)	The shares are held by the Rettig Living Trust U/A DTD 12/02/2020, of which the reporting holder and his spouse are co-trustees.
(9)	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.
(10)	The option vests 50% on December 10, 2020 and thereafter 1/48 of the total shares vest monthly until such time as the option is 100% vested, subject to the continuing service of the Reporting Person on each vesting date.
(11)	The option vests in 16 equal quarterly installments over four years, beginning August 28, 2020, subject to the continuing service of the Reporting Person on each vesting date.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Rettig John R. C/O BILL.COM HOLDINGS, INC. 6220 AMERICA CENTER DR., SUITE 100 SAN JOSE, CA 95002			CFO