STOCK TITAN

Vicor director sells 3,073 shares after exercise

(Neutral)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

VICOR CORP (VICR) director and corporate vice president of global sales and marketing Philip D. Davies exercised options for 3,073 shares of common stock on September 1, 2026 at an exercise price of $41.61 per share, then sold 3,073 shares of common stock in multiple transactions pursuant to a Rule 10b5-1 trading plan adopted on November 21, 2025, and reported 856 option shares remaining from this grant.

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Insider Davies Philip D
Role Corp. VP-Global Sales & Mktg.
Sold 3,073 shs ($546K)
Approx. gross sale proceeds $546K
Approx. exercise cost $128K
Approx. pre-tax spread $418K
Type Security Shares Price Value
Exercise Non Qualified Stock Option 3,073 $0.00 $0.00
Exercise Common Stock 3,073 $41.61 $128K
Sale Common Stock F1, F2 1,173 $176.5922 $207K
Sale Common Stock F1, F3 1,100 $177.6312 $195K
Sale Common Stock F1, F4 700 $178.66 $125K
Sale Common Stock F1, F5 100 $184.85 $18K
Holdings After Transaction: Non Qualified Stock Option — 856 contracts (Direct); Common Stock — 1,920 shares (Direct)
Footnotes (5)
  1. F1. This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 21, 2025.
  2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $176.0000 and $176.9900. The reporting person undertakes to provide to Vicor Corporation, any security holder of Vicor Corporation, 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 ranges set forth in footnotes (2) through (5) to this Form 4.
  3. F3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.3000 to $177.8800.
  4. F4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $178.4300 to $179.0400.
  5. F5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $184.8500 to $184.8500.
Options exercised 3,073 shares Non-qualified stock option converted into common stock on September 1, 2026
Option exercise price $41.61 per share Exercise of options for 3,073 shares of common stock
Shares sold at $176.5922 1,173 shares Weighted average sale price on September 1, 2026
Shares sold at $177.6312 1,100 shares Weighted average sale price on September 1, 2026
Shares sold at $178.66 700 shares Weighted average sale price on September 1, 2026
Shares sold at $184.85 100 shares Weighted average sale price on September 1, 2026
Remaining option shares 856 shares Non-qualified stock option position after the reported exercise
Rule 10b5-1 plan adoption date November 21, 2025 Date the trading plan governing these sales was adopted
Rule 10b5-1 trading plan regulatory
"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 21, 2025."
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
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.
Non Qualified Stock Option financial
"Non Qualified Stock Option exercised to acquire common stock"
derivative security financial
"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.

FAQ

What insider transactions did VICR executive Philip D. Davies report on this Form 4?

Philip D. Davies reported exercising options for 3,073 shares of Vicor common stock at $41.61 per share on September 1, 2026, and selling 3,073 shares of common stock in multiple transactions on the same date under a Rule 10b5-1 trading plan.

At what prices did the VICR shares sell in Philip D. Davies’s September 1, 2026 transactions?

The reported weighted average sale prices were $176.5922 for 1,173 shares, $177.6312 for 1,100 shares, $178.66 for 700 shares, and $184.85 for 100 shares, with footnotes stating each figure reflects a weighted average price over ranges of individual trade prices.

Were Philip D. Davies’s VICR share sales under a Rule 10b5-1 plan?

Yes. A footnote states the sales were effected pursuant to a Rule 10b5-1 trading plan adopted by Philip D. Davies on November 21, 2025, and the filing affirms use of such a plan.

How many VICR option shares remain after Philip D. Davies’s reported option exercise?

After exercising options covering 3,073 shares of Vicor common stock, the filing reports that 856 shares remain subject to that non-qualified stock option, with an expiration date of May 2, 2028.

What was the exercise price and expiration date of the VICR options exercised by Philip D. Davies?

The non-qualified stock option exercised by Philip D. Davies covered 3,073 shares at an exercise price of $41.61 per share, with an expiration date of May 2, 2028 and an initial exercise date of May 2, 2026.

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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).
X
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*
Davies Philip 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)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
Corp. VP-Global Sales & Mktg.
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
09/01/2026
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 Stock09/01/2026M3,073A$41.614,993D
Common Stock09/01/2026S(1)1,173D$176.5922(2)3,820D
Common Stock09/01/2026S(1)1,100D$177.6312(3)2,720D
Common Stock09/01/2026S(1)700D$178.66(4)2,020D
Common Stock09/01/2026S(1)100D$184.85(5)1,920D
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$41.6109/01/2026M3,07305/02/202605/02/2028Common Stock3,073$0856D
Explanation of Responses:
1. This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 21, 2025.
2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $176.0000 and $176.9900. The reporting person undertakes to provide to Vicor Corporation, any security holder of Vicor Corporation, 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 ranges set forth in footnotes (2) through (5) to this Form 4.
3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.3000 to $177.8800.
4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $178.4300 to $179.0400.
5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $184.8500 to $184.8500.
/s/Quentin A. Fendelet Attorney in Fact for Philip D. Davies09/03/2026
** 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)