6-K

UNITEDSTATES

SECURITIESAND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM6-K

REPORTOF FOREIGN PRIVATE ISSUER

PURSUANTTO RULE 13a-16 OR 15d-16

UNDERTHE SECURITIES EXCHANGE ACT OF 1934

Forthe month of May 2026

CommissionFile Number: 001-42669

PITANIUMLIMITED

(Registrant’sName)

30F, Gravity, 29 Hing Yip Street,

KwunTong, Kowloon, Hong Kong

(Addressof Principal Executive Offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F ☒ Form 40-F ☐

CONTENTS

PressRelease

On May 4 , 2026, Pitanium Limited (the “Company”) issued a press release, which was published on its official website, announcing the gradual introduction of two new product lines under its Pitanium brand. A copy of which is furnished as Exhibit 99.1 with this Report of Foreign Private Issuer on Form 6-K.

Forward-LookingStatements

The press release may contain forward-looking statements. Certain statements are not historical facts, and are based on management’s current view and estimates of future economic circumstances, industry conditions, company performance and financial results. These statements include, but are not limited to, statements regarding the expected launch, availability, and potential benefits of the Company’s new product lines. The words “anticipates”, “believes”, “estimates”, “expects”, “plans” and similar expressions, as they relate to the Company, are intended to identify forward-looking statements. Forward-looking statements are subject to a number of risks and uncertainties that could cause actual results to differ materially from those described in such statements. These risks and uncertainties include, among others, changes in market conditions, regulatory developments, product development and commercialization risks. The Company undertakes no obligation to update or revise any forward-looking statements, except as required by applicable law.

Updateon Trading Halt of Securities and Company Responses

Reference is made to the Company’s Reports on Form 6-K furnished on October 31, 2025 and November 21, 2025, which disclosed the trading halt of the Company’s securities, related information requests, and the Company’s written responses thereto.

On April 20, 2026, the Company received additional information requests from The Nasdaq Stock Market (Nasdaq) for certain information and documents, and the Company submitted its written response with supporting materials to Nasdaq on May 4, 2026. As of the date of this report, the Company has responded to all comments and document requests received from the U.S. Securities and Exchange Commission (SEC), Nasdaq, Financial Industry Regulatory Authority (FINRA), as applicable. The Company continues to monitor the matter and remains committed to cooperating in a transparent and timely manner. The Company’s business operations remain normal and uninterrupted as of the date of this report.

This Report on Form 6-K and the information contained herein shall be deemed to be furnished and not filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and shall not be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

EXHIBITINDEX

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, thereunto duly authorized.

Exhibit99.1

Pitanium’sAll-New Series Debut:

Pi-ologyand Pi-Formance Offer a New Approach for Inside-Out Care

HONGKONG, China, May 4, 2026 — PITAMIUM LIMITED (Nasdaq: PTNM) introduces two major new product lines: the Pi-ology Series, which focuses on biotechnological skincare, and the Pi-Formance Series, dedicated to body function and wellness. Through the dual synergistic effect of “external care and internal health,” Pitanium aims to enhance personal care and anti-aging management.

(Source:Pitanium Limited)

ThePi-ology Series: Biotechnological Skincare

This series applies advanced biotechnology and ingredient fermentation techniques to the realm of skincare. Through fermentation processes, core ingredients undergo a profound transformation, offering certain benefits:

Five-DimensionalEnhancement: The activity, purity, stability, penetrability, and longevity of the ingredients are enhanced.

ImprovedSkin Compatibility: The fermented molecular structure is designed to support skin affinity. Nutrients are expected to reach the deeper layers of the skin with “zero rejection,” exerting the purest and most highly effective skincare benefits.

ThePi-Formance Series: Building a Healthy Constitution from Within

The Pi-Formance Series is expected to introduce targeted supplements, including women’s probiotics and hair follicle health formulas. Through internal wellness support, Pitanium aims to comprehensively fortify the body’s foundation. This empowers individuals to navigate daily challenges with optimal health and vitality, while simultaneously creating a powerful synergy with our skincare lines to support overall health and complement daily routines.

By combining the skincare technology of Pi-ology with the robust physiological support of Pi-Formance, Pitanium brings together dermatological science with biological wellness. The new product lines will be rolling out soon, inviting all users to step into a new era of personal care together.

Thestatements above are intended to describe product features and are not intended as medical or therapeutic claims. Results may vary amongindividuals.