# EDGAR Filing Document

**Accession Number:** 0001819994
**File Stem:** 0001819994-26-000004
**Filing Date:** 2026-1
**Character Count:** 10453
**Document Hash:** 584d2370242fa95e1f784b1d345ac93d
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001819994-26-000004.hdr.sgml**: 20260122

**ACCESSION NUMBER**: 0001819994-26-000004

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 14

**CONFORMED PERIOD OF REPORT**: 20260121

**ITEM INFORMATION**: Regulation FD Disclosure

**ITEM INFORMATION**: Other Events

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260122

**DATE AS OF CHANGE**: 20260121

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Rocket Lab Corp
- **CENTRAL INDEX KEY:** 0001819994
- **STANDARD INDUSTRIAL CLASSIFICATION:** GUIDED MISSILES & SPACE VEHICLES & PARTS [3760]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 392182599
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39560
- **FILM NUMBER:** 26549525

**BUSINESS ADDRESS:**
- **STREET 1:** 3881 MCGOWEN STREET
- **CITY:** LONG BEACH
- **STATE:** CA
- **ZIP:** 90808
- **BUSINESS PHONE:** 714-465-5737

**MAIL ADDRESS:**
- **STREET 1:** 3881 MCGOWEN STREET
- **CITY:** LONG BEACH
- **STATE:** CA
- **ZIP:** 90808

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Rocket Lab USA, Inc.
- **DATE OF NAME CHANGE:** 20210831

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Vector Acquisition Corp
- **DATE OF NAME CHANGE:** 20200803

?xml version='1.0' encoding='ASCII'? rklb-20260121

**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): January 21, 2026**

**ROCKET LAB CORPORATION**

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

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| | | |
|:---|:---|:---|
| **Delaware** | **001-39560** | **39-2182599** |
| **(State or Other Jurisdiction<br>of Incorporation)** | **(Commission File Number)** | **(IRS Employer<br>Identification No.)** |
| **3881 McGowen Street** | | |
| **Long Beach, California** | | **90808** |
| **(Address of Principal Executive Offices)** | | **(Zip Code)** |

---

**Registrant's Telephone Number, Including Area Code: 714 465-5737**

**Not Applicable**

**(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:

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

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

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

☐&nbsp;&nbsp;&nbsp;&nbsp;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<br>Symbol(s)** | **Name of each exchange on which registered** |
| Common Stock, par value $0.0001 per share | RKLB | 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 (§ 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 7.01 Regulation FD Disclosure.**

On January 21, 2026, Rocket Lab Corporation (the "Company") issued a press release, providing an update relating to the development of its Neutron rocket. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

The information set forth under this Item 7.01 and in Exhibit 99.1 is not being filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and is not to be incorporated by reference into any filing of the registrant under the Securities Act of 1933, as amended, or the Exchange Act, whether made before or after the date hereof, regardless of any general incorporation language in any such filing, except as shall be expressly set forth by specific reference in such a filing.

**Item 8.01 Other Events.**

On January 21, 2026, the Company issued a press release, providing an update relating to the development of its Neutron rocket. Qualification testing of the Stage 1 tank resulted in a rupture during a hydrostatic pressure trial. The team is reviewing the Stage 1 test data, which will determine the extent of the impact to Neutron's launch schedule.

**Item 9.01 Financial Statements and Exhibits.**

(d) Exhibits.

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| | |
|:---|:---|
| Exhibit | Description |
| 99.1 | <u>[Press Release of Rocket Lab Corporation, dated January 21, 2026](rklb-01212026ex991.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.

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| | | | |
|:---|:---|:---|:---|
| | | | **ROCKET LAB CORPORATION** |
| Date: | January 21, 2026 | By: | /s/ Adam Spice |
|  |  |  | Adam Spice<br>Chief Financial Officer |

---

## Exhibit 99.1

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| | |
|:---|:---|
| **MEDIA RELEASE** | ![rocketlablogo.jpg](rocketlablogo.jpg) |

---

**Exhibit 99.1**

**Rocket Lab Neutron Test Update**

**Long Beach, Calif. January 21, 2026**: Rocket Lab Corporation (Nasdaq: RKLB) ("Rocket Lab" or "the Company"), a global leader in launch services and space systems, today announced an update relating to the development of its Neutron rocket.

As the Company pushes Neutron to the limits and beyond to qualify its systems and structures for launch, qualification testing of the Stage 1 tank overnight resulted in a rupture during a hydrostatic pressure trial. Testing failures are not uncommon during qualification testing. We intentionally test structures to their limits to validate structural integrity and safety margins to ensure the robust requirements for a successful launch can be comfortably met.

There was no significant damage to the test structure or facilities, the next Stage 1 tank is already in production, and Neutron's development campaign continues while the team assesses today's test outcome.

The team is reviewing the Stage 1 test data, which will determine the extent of the impact to Neutron's launch schedule. The Company intends to provide an update on the Neutron schedule during its 2025 Q4 earnings call in February.

**Rocket Lab Media Contact**

media@rocketlabusa.com

**About Rocket Lab** 

About Rocket Lab Rocket Lab is a leading space company that provides launch services, spacecraft, payloads and satellite components serving commercial, government, and national security markets. Rocket Lab's Electron rocket is the world's most frequently launched orbital small rocket; its HASTE rocket provides hypersonic test launch capability for the U.S. government and allied nations; and its Neutron launch vehicle in development will unlock medium launch for constellation deployment, national security and exploration missions. Rocket Lab's spacecraft and satellite components have enabled more than 1,700 missions spanning commercial, defense and national security missions including GPS, constellations, and exploration missions to the Moon, Mars, and Venus. Rocket Lab is a publicly listed company on the Nasdaq stock exchange (RKLB). Learn more at <u>www.rocketlabcorp.com</u>.

rocketlabcorp.com \| media@rocketlabusa.com

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| | |
|:---|:---|
| **MEDIA RELEASE** | ![rocketlablogo.jpg](rocketlablogo.jpg) |

---

**Forward Looking Statements**

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. We intend such forward-looking statements to be covered by the safe harbor provisions for forward-looking statements contained in Section 27A of the Securities Act of 1933, as amended (the "Securities Act") and Section 21E of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). All statements contained in this press release other than statements of historical fact, including, without limitation, statements regarding our launch and space systems operations, launch schedule and window, safe and repeatable access to space, Neutron development, operational expansion and business strategy, are forward-looking statements. The words "believe," "may," "will," "estimate," "potential," "continue," "anticipate," "intend," "expect," "strategy," "future," "could," "would," "project," "plan," "target," and similar expressions are intended to identify forward-looking statements, though not all forward-looking statements use these words or expressions. These statements are neither promises nor guarantees, but involve known and unknown risks, uncertainties and other important factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements, including but not limited to the factors, risks and uncertainties included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2024, as such factors may be updated from time to time in our other filings with the Securities and Exchange Commission (the "SEC"), accessible on the SEC's website at www.sec.gov and the Investor Relations section of our website at https://investors.rocketlabcorp.com which could cause our actual results to differ materially from those indicated by the forward-looking statements made in this press release. Any such forward-looking statements represent management's estimates as of the date of this press release. While we may elect to update such forward-looking statements at some point in the future, we disclaim any obligation to do so, even if subsequent events cause our views to change.

rocketlabcorp.com \| media@rocketlabusa.com