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
                                                                                  
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response...
0.5
                      
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 * McNamara Michael 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)
General Manager Mfg. Ops.
(Last)         (First)         (Middle)
25 FRONTAGE RD
3. Date of Earliest Transaction (MM/DD/YYYY)
9/10/2020
(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
Comnon Stock  9/10/2020    M    2200  A $12.61  2683 (1) D   
Common Stock  9/10/2020    S    2200  D $85.1329  483  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  $12.61  9/10/2020    M        2200    (2) 2/24/2025  Common Stock  2200  $0  22800  D   

Explanation of Responses:
(1)  Includes 351 shares acquired under the Vicor Corporation 2017 Employee Stock Purchase Plan on August 31, 2020.
(2)  This stock option is exercisable in full.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
McNamara Michael
25 FRONTAGE RD
ANDOVER, MA 01810
X
General Manager Mfg. Ops.

Signatures
/s/Richard J. Nagel Jr. Attorney in fact for Michael McNamara 9/14/2020
**Signature of Reporting Person Date
Vicor (NASDAQ:VICR)
Historical Stock Chart
From Sep 2020 to Oct 2020 Click Here for more Vicor Charts.
Vicor (NASDAQ:VICR)
Historical Stock Chart
From Oct 2019 to Oct 2020 Click Here for more Vicor Charts.