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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3235-0287

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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 * COLLIS STEVEN H	2. Issuer Name and Ticker or Trading Symbol AMERISOURCEBERGEN CORP [ ABC ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director                    _____ 10% Owner __X__ Officer (give title below)    _____ Other (specify below) Chairman, President & CEO
(Last)          (First)          (Middle) 1300 MORRIS DRIVE	3. Date of Earliest Transaction (MM/DD/YYYY) 4/6/2020
(Street) CHESTERBROOK, PA 19087 (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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	4/6/2020		M		19905 (1)	A	$68.49	162027	D
Common Stock	4/6/2020		S		19905 (1)	D	$84.75	142122	D

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Non-qualified Stock Option (Right to Buy)	$68.49	4/6/2020		M			19905 (1)	(2)	11/13/2020	Common Stock	19905	$0	59714	D

Explanation of Responses:
(1)	The sale of stock reflected in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person effective June 19, 2019 and disclosed in the Company's 8-K filed with the Securities and Exchange Commission on June 25, 2019.
(2)	Exercisable in four equal annual installments on 11/13/14, 11/13/15, 11/13/16 and 11/13/17.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
COLLIS STEVEN H 1300 MORRIS DRIVE CHESTERBROOK, PA 19087	X		Chairman, President & CEO

Signatures
/s/ John G. Chou, attorney-in-fact for Steven H. Collis		4/7/2020
**Signature of Reporting Person		Date