Vicor updates bylaws on director removal

Vicor Corporation’s board has clarified By-law provisions governing how directors may be removed as of September 9, 2026.

Rhea-AI Filing Summary

Vicor Corporation (VICR) reports that, effective September 9, 2026, its Board of Directors amended the company’s By-laws. The amendment clarifies provisions in Article II, Section 6 relating to the removal of directors.

The full text of the amended By-laws, including unmarked and marked versions, is provided as exhibits and incorporated by reference.

8-K Event Classification

2 items: 5.03, 9.01

2 items

Item 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year Governance

The company amended its charter documents, bylaws, or changed its fiscal year.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, or exhibit attachments filed with this report.

Key Terms

By-laws, removal of directors, Articles of Incorporation

3 terms

By-laws regulatory

"amended Vicor’s By-laws to clarify provisions relating to the removal"

By-laws are the internal rules a corporation uses to run itself—how directors are chosen, how meetings are run, what officers do, and how voting and record-keeping work. For investors, by-laws matter because they shape who controls decisions, how easily management can be changed, and what rights shareholders have; think of them as the company’s operating manual that can influence governance, risk and the value of your stake.

removal of directors regulatory

"to clarify provisions relating to the removal of directors in Article II"

Articles of Incorporation regulatory

"Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year"

A formal legal document filed with a government authority that creates a corporation and sets its basic rules — for example the company name, business purpose, how many ownership shares can exist, and who can receive legal notices. It matters to investors because it defines ownership structure, voting rights, and limits on liability, shaping who controls the company and how future shares or dividends can affect an investor’s stake; think of it as the company’s birth certificate and rulebook.

FAQ

What governance change did VICR announce on September 9, 2026?

Vicor Corporation’s Board amended the company’s By-laws effective September 9, 2026 to clarify provisions in Article II, Section 6 regarding the removal of directors. The complete amended By-laws are included as exhibits to the report.

Does the Vicor (VICR) filing describe a change in fiscal year or only By-law amendments?

The filing describes an amendment to Vicor’s By-laws clarifying provisions on removal of directors. It is reported under the item covering amendments to Articles of Incorporation or By-laws and changes in fiscal year, but only the governance amendment is described.

When did the amended By-laws of Vicor (VICR) become effective?

The amended By-laws of Vicor Corporation became effective on September 9, 2026. Both unmarked and marked versions of the amended By-laws are filed as exhibits and incorporated by reference.

Where can investors see the exact By-law changes for Vicor (VICR)?

Investors can review the exact changes in the By-laws through Exhibit 3.1 (unmarked version) and Exhibit 3.2 (marked version), which show the amended By-laws as of September 9, 2026 and how the text was revised.

Does the Vicor (VICR) 8-K disclose any financial results or major transactions?

No. The 8-K focuses on a governance-related By-law amendment about removal of directors. It does not present financial results, earnings data, or major business transactions.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/10/2026 - 04:26 PM Accepted by SEC EDGAR 09/10/2026 - 04:26 PM Learn about SEC filing dates

VICOR CORP false 0000751978 --12-31 0000751978 2026-09-09 2026-09-09

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): September 9, 2026

VICOR CORPORATION

(Exact Name of Registrant as Specified in its Charter)

Delaware		0-18277		04-2742817
(State or Other Jurisdiction of Incorporation)		(Commission File Number)		(IRS Employer Identification No.)

25 Frontage Road, Andover, Massachusetts 01810

(Address of Principal Executive Offices) (Zip Code)

(978) 470-2900

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Common Stock, par value $0.01 per share		VICR		The NASDAQ Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 of the Securities Exchange Act of 1934.

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 5.03. Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year

Effective September 9, 2026, the Board of Directors of Vicor Corporation (“Vicor”) amended Vicor’s By-laws to clarify provisions relating to the removal of directors in Article II, Section 6 thereof. The foregoing summary is qualified in its entirety by reference to the full text of the amended By-laws, which are attached hereto as Exhibit 3.1 (unmarked version) and Exhibit 3.2 (marked version), and are incorporated by reference herein.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits

Exhibit No.		Description
3.1		By-laws, as amended on September 9, 2026 (unmarked version)
3.2		By-laws, as amended on September 9, 2026 (marked version)
104		Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

				VICOR CORPORATION
Date: September 10, 2026				By:		/s/ James F. Schmidt
						James F. Schmidt
						Chief Financial Officer

Filing Exhibits & Attachments

5 documents

Other Documents

• EX-3.1 EX-3.1 70.8 KB
• EX-3.2 EX-3.2 73.3 KB
• EX-101 XBRL TAXONOMY EXTENSION SCHEMA 3.1 KB
• EX-101 XBRL TAXONOMY EXTENSION LABEL LINKBASE 17.6 KB
• EX-101 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE 11.0 KB