VICR Vicor Corp

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 * Tuozzolo Claudio	2. Issuer Name and Ticker or Trading Symbol VICOR CORP [ vicr ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director                    _____ 10% Owner __X__ Officer (give title below)    _____ Other (specify below) Corp. Vice President
(Last)          (First)          (Middle) 25 FRONTAGE ROAD	3. Date of Earliest Transaction (MM/DD/YYYY) 9/9/2020
(Street) ANDOVER, MA 01810 (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	9/9/2020		M		7327	A	$8.062	54653	D
Common Stock (1)	9/9/2020		S		3714	D	$84.2674	50939	D
Common Stock	9/9/2020		M		2319	A	$5.67	53258	D
Common Stock	9/9/2020		S		2319	D	$84.2674	50939	D
Common Stock	9/9/2020		M		4224	A	$6.29	55163	D
Common Stock	9/9/2020		S		4224	D	$84.2674	50939	D
Common Stock	9/9/2020		M		4000	A	$6.29	54939	D
Common Stock	9/9/2020		S		4000	D	$83.8941	50939	D
Common Stock	9/9/2020		M		4000	A	$8.062	54939	D
Common Stock (1)	9/9/2020		S		2027	D	$83.8941	52912	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	$8.062	9/9/2020		M			11327	(2)	4/14/2024	Common Stock	11327	$0	4000	D
Non Qualified Stock Option	$5.67	9/9/2020		M			2319	(2)	6/21/2023	Common Stock	2319	$0	0	D
Non Qualified Stock Option	$6.29	9/9/2020		M			8224	(2)	6/17/2023	Common Stock	8224	$0	0	D

Explanation of Responses:
(1)	This transaction involved the exercise of non-qualified stock options, the terms of which provided for the purchase of shares of common stock possessing multi-year restrictions on their sale or transfer. As such, the exercise followed the sell-to-cover process, whereby a portion of the shares acquired through the exercise were sold in the open market, with the proceeds used to fund the aggregate exercise price of the options and the income and employment taxes associated with the exercise. The balance of the shares acquired through exercise that were delivered to the reporting person are subject to holding periods through the fifth anniversary of the date of this transaction.
(2)	This stock option is exercisable in full.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Tuozzolo Claudio 25 FRONTAGE ROAD ANDOVER, MA 01810	X		Corp. Vice President

Signatures
/s/Richard J. Nagel Jr. Attorney in fact for Claudio Tuozzolo		9/11/2020
**Signature of Reporting Person		Date