# EDGAR Filing Document

**Accession Number:** 0000080420
**File Stem:** 0000080420-26-000054
**Filing Date:** 2026-3
**Character Count:** 9102
**Document Hash:** e1131876dd9789e79ed0d67eaea7adf8
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000080420-26-000054.hdr.sgml**: 20260331

**ACCESSION NUMBER**: 0000080420-26-000054

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 12

**CONFORMED PERIOD OF REPORT**: 20260331

**ITEM INFORMATION**: Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260331

**DATE AS OF CHANGE**: 20260331

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** POWELL INDUSTRIES INC
- **CENTRAL INDEX KEY:** 0000080420
- **STANDARD INDUSTRIAL CLASSIFICATION:** SWITCHGEAR & SWITCHBOARD APPARATUS [3613]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 880106100
- **STATE OF INCORPORATION:** NV
- **FISCAL YEAR END:** 0930

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-12488
- **FILM NUMBER:** 26821977

**BUSINESS ADDRESS:**
- **STREET 1:** 8550 MOSLEY DR
- **STREET 2:** POST OFFICE BOX 12818
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77075
- **BUSINESS PHONE:** 7139446900

**MAIL ADDRESS:**
- **STREET 1:** 8550 MOSLEY DRIVE P O BOX 12818
- **STREET 2:** 8550 MOSLEY DRIVE P O BOX 12818
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77075

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** PROCESS SYSTEMS INC
- **DATE OF NAME CHANGE:** 19780926

?xml version='1.0' encoding='ASCII'? powl-20260331

**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): March 31, 2026**

**POWELL INDUSTRIES, INC.**

**(Exact Name of Registrant as Specified in Its Charter)**

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| | | |
|:---|:---|:---|
| **Delaware** | **001-12488** | **88-0106100** |
| **(State or other jurisdiction of<br>incorporation)** | **(Commission<br>File Number)** | **(I.R.S. Employer<br>Identification Number)** |

---

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| | | | |
|:---|:---|:---|:---|
| **8550 Mosley Road** | **Houston** | **Texas** | **77075-1180** |
| **(Address of principal executive offices)** | **(Address of principal executive offices)** | **(Address of principal executive offices)** | **(Zip Code)** |

---

**(713) 944-6900**

**(Registrant's Telephone Number, Including Area Code)**

**N/A**

**(Former Name or Former Address, if Changed Since Last Report)**

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:

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| | | |
|:---|:---|:---|
| Title of each class | Trading Symbol | Name of each exchange on which registered |
| Common Stock, par value $0.01 per share | POWL | Nasdaq Global Market |

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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

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. ☐

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

On March 6, 2026, Powell Industries, Inc. (NASDAQ: POWL) (the "Company") previously announced a three-for-one forward stock split (the "Stock Split") of the Company's common stock. On March 31, 2026, the Company filed an amendment (the "Amendment") to the Company's Amended and Restated Certificate of Incorporation with the Secretary of State of the State of Delaware to effect the previously announced Stock Split and proportionately increase the number of shares of the Company's authorized common stock from 30 million to 90 million. The Amendment, which will become effective at 5:00 p.m. Eastern Time on April 1, 2026, is filed as Exhibit 3.1 to this Current Report on Form 8-K.

Trading is expected to commence on a split-adjusted basis at market open on April 6, 2026.

**Item 9.01 – Financial Statements and Exhibits.**

(d) Exhibits. The following exhibits are furnished as part of this Report.

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| | |
|:---|:---|
| **<u>Exhibit</u> <u>Number</u>** | **<u>Description</u>** |
| 3.1 | <u>[Certificate of Amendment to Amended and Restated Certificate of Incorporation of the Company](ex31-certificateofamendmen.htm)</u> |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document) |

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**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.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

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| | | |
|:---|:---|:---|
| | POWELL INDUSTRIES, INC. | POWELL INDUSTRIES, INC. |
| Date: March 31, 2026 |  |  |
|  | By: | /s/ Michael W. Metcalf |
|  |  | Michael W. Metcalf |
|  |  | Executive Vice President |
|  |  | Chief Financial and Principal Accounting Officer |
|  |  | (Principal Financial and Principal Accounting Officer) |

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## Exhibit 3.1

Exhibit 3.1

**CERTIFICATE OF AMENDMENT**

**TO**

**AMENDED AND RESTATED CERTIFICATE OF INCORPORATION**

**OF**

**POWELL INDUSTRIES, INC.**

Powell Industries, Inc., a corporation (the "Corporation") organized and existing under and by virtue of the General Corporation Law of the State of Delaware (the "DGCL"), hereby adopts this Certificate of Amendment, which amends the Amended and Restated Certificate of Incorporation of the Corporation, as described below, and does hereby further certify that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.The name of the Corporation is Powell Industries, Inc.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.The Board of Directors of the Corporation duly adopted resolutions setting forth an Amendment to the Amended and Restated Certificate of Incorporation declaring that clause (a) of Article 4 be amended and restated so that clause (a) shall read in its entirety as follows:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)The total number of shares of all classes of stock which the corporation shall have authority to issue is 95 million (95,000,000) shares, of which 90 million (90,000,000) shall be shares of common stock, par value $.01 per share, and five million (5,000,000) shall be shares of preferred stock, par value $.01 per share. At the Effective Time, each share of common stock issued as of immediately prior to the Effective Time shall be automatically subdivided and reclassified into three validly issued, fully paid and non-assessable shares of common stock, without any further action by the Corporation or the holder thereof (the "Stock Split"). Each certificate that immediately prior to the Effective Time represented shares of common stock shall thereafter represent that number of shares of common stock into which the shares of common stock represented by such certificate shall have been subdivided and reclassified pursuant to the Stock Split.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.The foregoing amendment was duly adopted in accordance with the provisions of Section 141(f) and Section 242 of the DGCL. No meeting or vote of the Corporation's stockholders was required to adopt the Certificate of Amendment pursuant to Section 242(d)(1) of the DGCL.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.This Certificate of Amendment shall become effective at 5:00 p.m. Eastern Time on April 1, 2026 (the "Effective Time").

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.All other provisions of the Amended and Restated Certificate of Incorporation of the Corporation shall remain in full force and effect.

[*Signature page follows*]

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IN WITNESS WHEREOF, this Amendment to the Amended and Restated Certificate of Incorporation has been executed by an authorized officer of this Corporation as of March 31, 2026.

Powell Industries, Inc.

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| | |
|:---|:---|
| By: | /s/ Michael W. Metcalf |
| Name: | Michael W. Metcalf |
| Title: | Executive Vice President, Chief Financial and Principal Accounting Officer |

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