STOCK TITAN

Vicor (VICR) VP Kemble Morrison exercises options then sells 2,313 shares

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Vicor Corp VP-Corporate Controller Kemble D. Morrison exercised stock options and sold the resulting shares. On Common Stock, he exercised four non-qualified stock option grants for a total of 2,313 shares at exercise prices of $33.9600, $41.6100, $50.0000, and $60.6100 per share. He then executed open-market sales totaling 2,313 shares at reported weighted average prices of $300.3078, $301.7066, $302.5150, and $303.5468 per share, leaving him with 0 shares of Vicor common stock held directly after these transactions.

Positive

  • None.

Negative

  • None.
Insider Morrison Kemble D
Role null
Sold 2,313 shs ($698K)
Type Security Shares Price Value
Exercise Non Qualified Stock Option 372 $0.00 --
Exercise Non Qualified Stock Option 523 $0.00 --
Exercise Non Qualified Stock Option 680 $0.00 --
Exercise Non Qualified Stock Option 738 $0.00 --
Exercise Common Stock 372 $60.61 $23K
Exercise Common Stock 523 $50.00 $26K
Exercise Common Stock 680 $41.61 $28K
Exercise Common Stock 738 $33.96 $25K
Sale Common Stock 800 $300.3078 $240K
Sale Common Stock 1,000 $301.7066 $302K
Sale Common Stock 100 $302.515 $30K
Sale Common Stock 413 $303.5468 $125K
Holdings After Transaction: Non Qualified Stock Option — 372 shares (Direct, null); Common Stock — 372 shares (Direct, null)
Footnotes (1)
  1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $300.1300 to $300.4100. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $301.4000 to $302.1500 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $302.5150 to $302.5150. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $303.5200 to $304.1100.
Shares sold 2,313 shares Total common shares sold in open-market transactions
Sale prices $300.3078–$303.5468/share Reported weighted average prices for common stock sales
Options exercised 2,313 shares Common shares acquired via non-qualified stock option exercises
Exercise prices $33.9600–$60.6100/share Strike prices for exercised non-qualified stock options
Post-transaction holdings 0 shares Directly held Vicor common stock after reported transactions
Non Qualified Stock Option financial
"security_title: "Non Qualified Stock Option" with underlying Common Stock"
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
open-market sale financial
"transaction_action: "open-market sale" for common stock transactions"
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
derivative security financial
"transaction_code_description: "Exercise or conversion of derivative security""
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Morrison Kemble D

(Last)(First)(Middle)
25 FRONTAGE ROAD

(Street)
ANDOVER MASSACHUSETTS 01810

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
VICOR CORP [ VICR ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
Officer (give title below)XOther (specify below)
VP-Corporate Controller
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/11/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction 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)
CodeVAmount(A) or (D)Price
Common Stock05/11/2026M372A$60.61372D
Common Stock05/11/2026M523A$50895D
Common Stock05/11/2026M680A$41.611,575D
Common Stock05/11/2026M738A$33.962,313D
Common Stock05/11/2026S800D$300.3078(1)1,513D
Common Stock05/11/2026S1,000D$301.7066(2)513D
Common Stock05/11/2026S100D$302.515(3)413D
Common Stock05/11/2026S413D$303.5468(4)0D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction 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 (Month/Day/Year)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: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Non Qualified Stock Option$60.6105/11/2026M37204/25/202604/25/2028Common Stock372$0372D
Non Qualified Stock Option$5005/11/2026M52305/02/202605/02/2028Common Stock523$02,089D
Non Qualified Stock Option$41.6105/11/2026M68005/02/202605/02/2028Common Stock680$01,360D
Non Qualified Stock Option$33.9605/11/2026M73805/03/202605/03/2028Common Stock738$02,213D
Explanation of Responses:
1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $300.1300 to $300.4100.
2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $301.4000 to $302.1500
3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $302.5150 to $302.5150.
4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $303.5200 to $304.1100.
/s/Kemble D. Morrison05/12/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transactions did VICOR CORP (VICR) report for Kemble D. Morrison?

VICOR CORP reported that Kemble D. Morrison exercised non-qualified stock options for 2,313 common shares and sold 2,313 shares in open-market transactions. These trades occurred on Common Stock and left him with no directly held Vicor shares afterward.

How many VICOR CORP (VICR) shares did Kemble D. Morrison sell?

Kemble D. Morrison sold a total of 2,313 shares of Vicor common stock. The sales were reported as multiple open-market transactions, each with its own weighted average price disclosed in the filing, and followed the exercise of stock options for the same number of shares.

At what prices were Kemble D. Morrison’s VICOR CORP (VICR) shares sold?

The filing shows weighted average sale prices of $300.3078, $301.7066, $302.5150, and $303.5468 per share. Footnotes add that these trades occurred in multiple transactions within specified price ranges for each block of sales on the same trading date.

What option exercise prices applied to Kemble D. Morrison’s VICOR CORP (VICR) stock options?

His non-qualified stock options were exercised into common shares at strike prices of $33.9600, $41.6100, $50.0000, and $60.6100 per share. Each option series converted into an equivalent number of Vicor common shares before being sold in the open market.

How many VICOR CORP (VICR) shares does Kemble D. Morrison hold after these transactions?

After the reported exercises and sales, Kemble D. Morrison’s directly held Vicor common stock position is 0 shares. The Form 4’s post-transaction ownership fields for the common stock entries show zero shares remaining under his direct ownership following the sales.

Were Kemble D. Morrison’s VICOR CORP (VICR) sales reported as weighted average prices?

Yes. Each sale entry lists a single weighted average price per share, with footnotes explaining that the shares were sold in multiple transactions within specified price ranges. The filing provides those ranges for additional detail on how the weighted averages were calculated.