# EDGAR Filing Document

**Accession Number:** 0001957132
**File Stem:** 0001104659-26-022320
**Filing Date:** 2026-3
**Character Count:** 73334
**Document Hash:** 78976b936643c1ead5627d8b8b184bc9
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-022320.hdr.sgml**: 20260302

**ACCESSION NUMBER**: 0001104659-26-022320

**CONFORMED SUBMISSION TYPE**: POSASR

**PUBLIC DOCUMENT COUNT**: 6

**FILED AS OF DATE**: 20260302

**DATE AS OF CHANGE**: 20260302

**EFFECTIVENESS DATE**: 20260302

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** SharkNinja, Inc.
- **CENTRAL INDEX KEY:** 0001957132
- **STANDARD INDUSTRIAL CLASSIFICATION:** HOUSEHOLD APPLIANCES [3630]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 981377734
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** POSASR
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-289729
- **FILM NUMBER:** 26709054

**BUSINESS ADDRESS:**
- **STREET 1:** 89 A STREET, #100
- **CITY:** NEEDHAM
- **STATE:** MA
- **ZIP:** 02494
- **BUSINESS PHONE:** (617) 243-0235

**MAIL ADDRESS:**
- **STREET 1:** 89 A STREET, #100
- **CITY:** NEEDHAM
- **STATE:** MA
- **ZIP:** 02494

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** SharkNinja Global SPV, Ltd.
- **DATE OF NAME CHANGE:** 20221205

[**TABLE OF CONTENTS**](#TOC)

#### As filed with the Securities and Exchange Commission on March 2, 2026

#### Registration No. 333-289729

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549

#### Post-Effective Amendment No. 1 to Form F-3 on

### FORM S-3

#### REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
**SHARKNINJA, INC.** 

(Exact name of registrant as specified in its charter)

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| | | |
|:---|:---|:---|
| **Cayman Islands** <br> (State or other jurisdiction of <br> incorporation or organization)  | **3630** <br> (Primary Standard Industrial <br> Classification Code Number)  | **98-1738011** <br> (I.R.S. Employer <br> Identification Number)  |

---

#### 89 A Street Needham, MA 02494 (617) 243-0235
(Address, including zip code, and telephone number, including area code, of registrant's principal executive offices)

#### Mark Barrocas Chief Executive Officer SharkNinja, Inc. 89 A Street Needham, MA 02494 (617) 243-0235
(Name, address, including zip code, and telephone number, including area code, of agent for service)

#### Copies to:

---

| | | |
|:---|:---|:---|
| **Howard L. Ellin <br> Ryan J. Dzierniejko <br> Skadden, Arps, Slate, Meagher & Flom LLP <br> One Manhattan West <br> New York, New York 10001 <br> Telephone: (212) 735-3000 <br> Facsimile: (212) 735-2000**  | **Pedro J. Lopez-Baldrich <br> Chief Legal Officer <br> SharkNinja, Inc. <br> 89 A Street <br> Needham, MA 02494 <br> (617) 243-0235**  | **Michael Lockwood <br> Maples and Calder (Cayman) LLP <br> PO Box 309, Ugland House, <br> Grand Cayman, KY1- 1104 <br> Cayman Islands <br> Telephone: +1 (345) 949-8066 <br> Facsimile: +1 (345) 949-8080**  |

---

Approximate date of commencement of proposed sale to the public: From time to time after the effective date of this registration statement.

If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box. ☐

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities offered only in connection with dividend or interest reinvestment plans, check the following box. ☒

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a registration statement pursuant to General Instruction I.D. or a post-effective amendment thereto that shall become effective upon filing with the Commission pursuant to Rule 462(e) under the Securities Act, check the following box. ☒

If this Form is a post-effective amendment to a registration statement filed pursuant to General Instruction I.D. filed to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box. ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company" and "emerging growth company" in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer ☒ Accelerated filer ☐ <br> Non-accelerated filer ☐ Smaller reporting company ☐ <br> 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 7(a)(2)(B) of the Securities Act. ☐

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#### EXPLANATORY NOTE
On August 20, 2025, SharkNinja, Inc. (the "Company") filed a registration statement (the "Prior Registration Statement") on Form F-3 (File No. 333-289729) with the U.S. Securities and Exchange Commission (the "SEC") relating to the offering and sale by the Company and the offering and sale by certain selling shareholders of the Company's ordinary shares. As of such date, the Company was a foreign private issuer within the meaning of the Securities Act of 1933, as amended (the "Securities Act"). The Company determined that, effective July 1, 2025, it was no longer a foreign private issuer, and as a result is subject to the registration requirements applicable to a United States domestic registrant. This Post-Effective Amendment No. 1 to Form F-3 on Form S-3 is being filed by the Company to convert the Prior Registration Statement into a Registration Statement on Form S-3 and contains an updated prospectus relating to the offering and sale by the Company and the offering and sale by certain selling shareholders of the Company's ordinary shares that were registered under the Prior Registration Statement. Any future fees payable under the Registration Statement as amended by this Post-Effective Amendment No. 1 will be paid in accordance with Rule 456(b) and 457(r) under the Securities Act. This Registration Statement on Form S-3 became effective automatically upon filing with the SEC on March 2, 2026.

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#### Prospectus
![[MISSING IMAGE: lg_shark-bwlr.jpg]](lg_shark-bwlr.jpg)

### SharkNinja, Inc.

### Ordinary Shares Ordinary Shares Offered by the Selling Shareholders
We may offer, issue and sell from time to time in one or more offerings our ordinary shares. Certain selling shareholders to be identified in supplements to this prospectus may offer and sell ordinary shares from time to time. We will not receive any proceeds from the sale of ordinary shares by the selling shareholders.

We will provide the specific prices and terms of the ordinary shares in one or more supplements to this prospectus at the time of offering. You should read this prospectus and the accompanying prospectus supplement carefully before you make your investment decision.

#### This prospectus may not be used to sell securities unless accompanied by a prospectus supplement.
 **Investing in our securities involves a number of risks. See "Risk Factors" on page [5](#tRIFA), in our periodic reports filed from time to time with the Securities and Exchange Commission and in the applicable prospectus supplement before you make your investment decision.** 

We or a selling shareholder may offer securities through underwriting syndicates managed or co-managed by one or more underwriters or dealers, through agents or directly to purchasers. If required, the prospectus supplement for each offering of securities will describe the plan of distribution for that offering. For general information about the distribution of securities offered, please see "Plan of Distribution" in this prospectus.

Our ordinary shares are listed on the New York Stock Exchange ("NYSE") under the trading symbol "SN." On February 27, 2026, the last reported sale price of our ordinary shares as reported on the NYSE was $122.87 per share. Each prospectus supplement will indicate whether the securities offered thereby will be listed on any securities exchange.

 **Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus or any accompanying prospectus supplement is truthful or complete. Any representation to the contrary is a criminal offense.** 

#### The date of this prospectus is March 2, 2026

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#### **TABLE OF CONTENTS**

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| | |
|:---|:---|
| [ABOUT THIS PROSPECTUS](#tATP)  | [1](#tATP) |
| [WHERE YOU CAN FIND MORE INFORMATION](#tWYCF)  | [1](#tWYCF) |
| [INCORPORATION BY REFERENCE](#tIBR)  | [2](#tIBR) |
| [CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS](#tCNRF)  | [3](#tCNRF) |
| [THE COMPANY](#tTHCO)  | [4](#tTHCO) |
| [RISK FACTORS](#tRIFA)  | [5](#tRIFA) |
| [USE OF PROCEEDS](#tUOP)  | [6](#tUOP) |
| [DESCRIPTION OF SHARE CAPITAL](#tDOSC)  | [7](#tDOSC) |
| [SELLING SHAREHOLDERS](#tSESH)  | [8](#tSESH) |
| [PLAN OF DISTRIBUTION](#tPOD)  | [9](#tPOD) |
| [LEGAL MATTERS](#tLEMA)  | [10](#tLEMA) |
| [EXPERTS](#tEXF4)  | [10](#tEXF4) |
| [ENFORCEMENT OF CIVIL LIABILITIES](#tEOCL)  | [10](#tEOCL) |

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#### ABOUT THIS PROSPECTUS
This prospectus is part of an "automatic shelf" registration statement that we filed with the SEC as a "well-known seasoned issuer" as defined in Rule 405 under the Securities Act, using a "shelf" registration process. Under this process, we or a selling shareholder may offer and sell from time to time ordinary shares. This prospectus only provides you with a general description of the ordinary shares that we or a selling shareholder may offer. Each time we or a selling shareholder sells ordinary shares, we will provide a supplement to this prospectus that contains specific information about the terms of that offering, including the specific amounts, prices and terms of the ordinary shares offered. The prospectus supplement may also add, update or change information contained in this prospectus. You should carefully read both this prospectus, any accompanying prospectus supplement and any free writing prospectus prepared by or on behalf of us, together with the additional information described under the heading "Where You Can Find More Information."

Neither we nor any selling shareholder has authorized anyone to provide you with any information other than that contained in or incorporated by reference into this prospectus, any accompanying prospectus supplement and any free writing prospectus prepared by or on behalf of us or any selling shareholder. Neither we nor any selling shareholder take responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. Neither we nor any selling shareholder is making any offer to sell the ordinary shares in any jurisdiction in which an offer or solicitation is not authorized or in which the person making such offer or solicitation is not qualified to do so or to anyone to whom it is unlawful to make an offer or solicitation.

You should assume that the information appearing in this prospectus, any prospectus supplement or any document incorporated by reference is accurate only as of the date of the applicable documents, regardless of the time of delivery of this prospectus or any sale of securities. Our business, financial condition, results of operations and prospects may have changed since that date.

When used in this prospectus, the terms "SharkNinja," the "Company," "we," "our" and "us" refer to SharkNinja, Inc. and its consolidated subsidiaries, unless otherwise specified or the context otherwise requires.

#### WHERE YOU CAN FIND MORE INFORMATION
This prospectus is part of the registration statement we filed with the SEC under the Securities Act, and does not contain all the information set forth in the registration statement and the exhibits and schedules to the registration statement. The rules and regulations of the SEC allow us to omit certain information from this prospectus that is included in the registration statement and the exhibits and schedules to the registration statement. For further information, we refer you to the registration statement and the exhibits and schedules filed as part of the registration statement.

Statements made in this prospectus concerning the contents of any contract, agreement or other document are not necessarily complete descriptions of all terms of these documents. If a document has been filed as an exhibit to the registration statement, we refer you to the copy of the document that has been filed for a complete description of its terms. Each statement in this prospectus relating to a document filed as an exhibit is qualified in all respects by the filed exhibit. You should read this prospectus and the documents that we have filed as exhibits to the registration statement of which this prospectus forms a part completely.

We are subject to the informational requirements of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). Accordingly, we are required to file reports and other information with the SEC, including annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and proxy information. The SEC maintains a website that contains reports and other information about issuers, like us, that file electronically with the SEC. The address of that website is www.sec.gov. We also maintain a website at www.sharkninja.com at which you may access these materials free of charge as soon as reasonably practicable after they are electronically filed with, or furnished to, the SEC. The information contained on, or that can be accessed through, these websites is not a part of this prospectus. We have included these website addresses in this prospectus solely as an inactive textual references.

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#### INCORPORATION BY REFERENCE
The rules of the SEC allow us to incorporate information into this prospectus by reference. The information incorporated by reference is considered to be a part of this prospectus, and information in documents that we file later with the SEC will automatically update and supersede information included or incorporated by reference in this prospectus. We incorporate by reference into this prospectus the documents listed below and any future filings made by us with the SEC under Section 13(a), 13(c), 14 or 15(d) of the Exchange Act, except for information "furnished" to the SEC which is not deemed filed and not incorporated in this prospectus, until the termination of the offering of securities described in the applicable prospectus supplement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • Our Annual Report on Form 10-K for the fiscal year ended December 31, 2025, filed on [March 2](https://www.sec.gov/ix?doc=/Archives/edgar/data/0001957132/000195713226000015/sharkninja-20251231.htm)[, 2026;](https://www.sec.gov/ix?doc=/Archives/edgar/data/0001957132/000195713226000015/sharkninja-20251231.htm)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • our Current Reports on Form 8-K, filed with the SEC on [January 7, 2026](http://www.sec.gov/ix?doc=/Archives/edgar/data/1957132/000195713226000003/sharkninja-20260105.htm), [January 20, 2026](http://www.sec.gov/ix?doc=/Archives/edgar/data/1957132/000195713226000005/sharkninja-20260119.htm), and [February 11, 2026](http://www.sec.gov/ix?doc=/Archives/edgar/data/1957132/000195713226000009/sharkninja-20260211.htm) (with respect to Item 8.01 only); and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • [the description of our share capital in our Registration Statement on Form 8-A (Registration Statement No. 001- 41754) filed on July 24, 2023.](http://www.sec.gov/Archives/edgar/data/1957132/000110465923083430/tm2321822d1_8a12b.htm)

Any statement made in a document incorporated by reference into this prospectus will be deemed to be modified or superseded for purposes of this prospectus to the extent that a statement contained in this prospectus modifies or supersedes that statement. Any statement so modified or superseded will not be deemed as so modified or superseded, except as so modified or superseded, to constitute a part of this prospectus.

You can obtain any of the filings incorporated by reference into this prospectus through us or from the SEC through the SEC's website at http://www.sec.gov. We will provide, without charge, to each person, including any beneficial owner, to whom a copy of this prospectus is delivered, upon written or oral request of such person, a copy of any or all of the reports and documents referred to above which have been or may be incorporated by reference into this prospectus. You should direct requests for those documents to: SharkNinja Investor Relations; IR@sharkninja.com; telephone: (617) 243-0235.

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#### CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS
This prospectus, any accompanying prospectus supplement and any documents incorporated by reference may contain statements that are "forward-looking" within the meaning of the Private Securities Litigation Reform Act of 1995.

Forward-looking statements can often be identified by the use of forward-looking language such as "may," "should," "could," "predict," "potential," "believe," "will likely result," "expect," "continue," "will," "anticipate," "seek," "estimate," "intend," "plan," "projection," "would" and "outlook," or the negative version of those words or phrases or other comparable words or phrases of a future or forward-looking nature. Our actual results, performance or achievements could be materially different from the results expressed in, or implied by, forward-looking statements. Forward-looking statements are subject to risks and uncertainties, including but not limited to the risks described in this prospectus, any accompanying prospectus supplement and any documents incorporated by reference, including the "Risk Factors" sections of this prospectus, any accompanying prospectus supplement and our reports and other documents filed with the SEC. When considering forward-looking statements, you should keep in mind the risks, uncertainties and other cautionary statements made in this prospectus, any accompanying prospectus supplement and the documents incorporated by reference.

There can be no assurance that other factors not currently anticipated by us will not materially and adversely affect our business, financial condition and results of operations. You are cautioned not to place undue reliance on any forward-looking statements made by us or on our behalf. Please take into account that forward-looking statements speak only as of the date of this prospectus or, in the case of any accompanying prospectus supplement or documents incorporated by reference, the date of any such document. Except as required by applicable law, we do not undertake any obligation to publicly correct or update any forward-looking statement.

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#### THE COMPANY
SharkNinja is a global product design and technology company that creates 5-star rated lifestyle solutions through innovative products for consumers around the world. We seek to leverage our global, agile and cross-functional engineering know-how, product development and manufacturing expertise along with our solutions-driven marketing to increase the efficiency, convenience and enjoyment of consumers' daily tasks and improve everyday lives. We have built two billion-dollar brands, Shark and Ninja, and have a proven track record of establishing leadership positions by disrupting numerous household product categories, including Cleaning Appliances, Cooking and Beverage Appliances, Food Preparation Appliances and Beauty and Home Environment Appliances. We have successfully gained market share across geographies, taking share from competitors priced both above and below our offerings. We believe our success is centered around our advanced engineering and innovation capabilities coupled with our deep understanding of consumer needs, enabling us to solve consumer problems that others either do not see or are unable to solve.

We are driven by our relentless pursuit of perfection to deliver innovative products at compelling value to delight consumers. We regularly analyze consumers' interactions with small home appliances and leverage consumer reviews across multiple platforms, which we refer to as our "always-on" approach. Our global product design and engineering team applies these always-on consumer insights to create new technologies and intellectual property that differentiates our products. Further, we strive to enhance our products through rapid iteration and refinement with the goal of increasing the value of our legacy products while decreasing costs. We believe this pursuit of perfection through innovation extends our product life cycles and differentiates us from competitors with longer innovation cycles. Our approach aims to enable us to rapidly bring new products to market, grow share of shelf and market share and thus quickly establish leadership positions in both existing and new categories.

Our principal executive office is located at 89 A Street, Needham, MA 02494 and our telephone number is (617) 243-0235. We maintain a website at www.sharkninja.com. The information on our website is not incorporated by reference in this prospectus or any accompanying prospectus supplement, and you should not consider it a part of this prospectus or any accompanying prospectus supplement.

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#### RISK FACTORS
Investing in our ordinary shares involves risk. See the risk factors described in our most recent Annual Report on Form 10-K, any subsequent quarterly reports on Form 10-Q and current reports on Form 8-K we file after the date of this prospectus (together with any material changes thereto contained in subsequent filings with the SEC that are incorporated by reference in this prospectus and any accompanying prospectus supplement) and those contained in our other filings with the SEC that are incorporated by reference in this prospectus and any accompanying prospectus supplement. Before making an investment decision, you should carefully consider these risks as well as other information we include or incorporate by reference in this prospectus and any accompanying prospectus supplement. These risks could materially affect our business, financial condition or results of operations and cause the value of our securities to decline. You could lose all or part of your investment.

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#### USE OF PROCEEDS
We intend to use the net proceeds from the sale of the ordinary shares as set forth in the applicable prospectus supplement(s). We will not receive any of the proceeds from the sale of ordinary shares being offered by any of the selling shareholders.

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#### DESCRIPTION OF SHARE CAPITAL

#### General
Our affairs are governed principally by: (i) our Memorandum and Articles of Association, (ii) the Companies Act and (iii) the common law of the Cayman Islands. As provided in our Memorandum and Articles of Association, we have full capacity to carry on or undertake any business or activity, do any act or enter into any transaction, and, for such purposes, full rights, powers and privileges.

The following description summarizes certain important terms of our share capital and our Memorandum and Articles of Association and highlights certain differences in corporate law in the Cayman Islands and Delaware. Because this is only a summary, it does not contain all the information that may be important to you and is qualified in its entirety by reference to our organizational documents, which are filed as exhibits to our Annual Report, and by applicable law.

Our authorized share capital consists of 1,000,000,000 ordinary shares, par value $0.0001 per share and 100,000,000 preferred shares, par value $0.0001 per share. As of February 19, 2026, we had 141,242,859 ordinary shares issued and outstanding and no preferred shares.

#### Ordinary Shares

#### Voting Rights
Holders of our ordinary shares are entitled to one vote for each share held of record on all matters submitted to a vote of shareholders. Generally, all matters to be voted on by shareholders must be approved by either (i) an ordinary resolution, which requires the affirmative vote of at least a majority of the votes entitled to be cast by all holders of ordinary shares present at a general meeting in person or represented by proxy, or (ii) a special resolution, which requires the affirmative vote of at least two thirds of the votes entitled to be cast by all holders of ordinary shares present at a general meeting in person or represented by proxy.

#### Cumulative Voting
Cumulative voting potentially facilitates the representation of minority shareholders on a board of directors since it permits the minority shareholder to cast all the votes to which the shareholder is entitled on a single director, which increases the shareholder's voting power with respect to electing such director. As permitted under Cayman Islands Law, our Memorandum and Articles of Association do not provide for cumulative voting.

#### Dividends
Subject to preferences that may apply to any ordinary shares issued and outstanding at the time, the holders of our ordinary shares are entitled to receive dividends as may be declared from time to time at the discretion of our Board out of lawfully available funds. See "Dividend Policy" for additional information.

#### No Preemptive or Similar Rights
Holders of our ordinary shares do not have preemptive, subscription or redemption rights. There are no redemption or sinking fund provisions applicable to our ordinary shares.

#### Fully Paid and Non-Assessable
All of the issued and outstanding ordinary shares are fully paid and non-assessable.

#### Transfer Agent and Registrar
The transfer agent and registrar for our ordinary shares is Computershare Trust Company, N.A. The transfer agent and registrar's address is 150 Royall Street, Canton, MA 02021.

#### Listing
Our ordinary shares are listed on NYSE under the symbol "SN."

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#### SELLING SHAREHOLDERS
Selling shareholders are persons or entities that, directly or indirectly, have acquired or will from time to time acquire from us, our ordinary shares in various private transactions. Such selling shareholders may be parties to a registration rights agreement with us, or we otherwise may have agreed or will agree to register their ordinary shares for resale. The initial purchasers of our ordinary shares, as well as their transferees, pledgees, donees or successors, all of whom we refer to as "selling shareholders," may from time to time offer and sell the ordinary shares pursuant to this prospectus and any applicable prospectus supplement.

The applicable prospectus supplement will set forth the name of each selling shareholder and the number of ordinary shares beneficially owned by such selling shareholder that are covered by such prospectus supplement. The applicable prospectus supplement also will disclose whether any of the selling shareholders have held any position or office with, have been employed by or otherwise have had a material relationship with us during the three years prior to the date of the prospectus supplement.

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#### PLAN OF DISTRIBUTION
We or the selling shareholders may sell the ordinary shares being offered hereby in one or more of the following ways from time to time:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • to underwriters for resale to purchasers;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • directly to purchasers;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • through agents or dealers to purchasers; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • through a combination of any of these methods.

In addition, we or the selling shareholders may enter into derivative or hedging transactions with third parties, or sell ordinary shares not covered by this prospectus to third parties in privately negotiated transactions. In connection with such a transaction, the third parties may sell ordinary shares covered by and pursuant to this prospectus and any accompanying prospectus supplement. If so, the third party may use ordinary shares borrowed from us or the selling shareholders or others to settle such sales and may use ordinary shares received from us to close out any related short positions. We or the selling shareholders may also loan or pledge ordinary shares covered by this prospectus and any accompanying prospectus supplement to third parties, who may sell the loaned ordinary shares or, in an event of default in the case of a pledge, sell the pledged ordinary shares pursuant to this prospectus and any accompanying prospectus supplement.

We or the selling shareholders will identify the specific plan of distribution, including any underwriters, dealers, agents or direct purchasers and their compensation, in a prospectus supplement. The applicable prospectus supplement will set forth whether or not an underwriter may engage in stabilizing transactions, over-allotment transactions, syndicate covering transactions and penalty bids.

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#### LEGAL MATTERS
Unless otherwise indicated in any accompanying prospectus supplement, Maples and Calder (Cayman) LLP will provide opinions regarding the authorization and validity of the ordinary shares. Skadden, Arps, Slate, Meagher & Flom LLP may also provide opinions regarding certain other matters. Any underwriters will be advised about legal matters by their own counsel, which will be named in an accompanying prospectus supplement.

#### EXPERTS
The consolidated financial statements of SharkNinja, Inc. appearing in SharkNinja, Inc.'s Annual Report (Form 10-K) for the year ended December 31, 2025, and the effectiveness of SharkNinja, Inc.'s internal control over financial reporting as of December 31, 2025 have been audited by Ernst & Young LLP, independent registered public accounting firm, as set forth in their reports thereon, included therein, and incorporated herein by reference. Such consolidated financial statements are incorporated herein by reference in reliance upon such reports given on the authority of such firm as experts in accounting and auditing.

#### ENFORCEMENT OF CIVIL LIABILITIES
We are an exempted company incorporated under the laws of the Cayman Islands. As a result, the rights of holders of our ordinary shares are governed by our Memorandum and Articles of Association and the Companies Act and the common law of the Cayman Islands. The rights of shareholders to take action against the directors, actions by minority shareholders and the fiduciary responsibilities of our directors to us under Cayman Law are to a large extent governed by the common law of the Cayman Islands. The common law of the Cayman Islands is derived in part from comparatively limited judicial precedent in the Cayman Islands as well as from English common law, the decisions of whose courts are of persuasive authority, but are not binding on a court in the Cayman Islands. The rights of our shareholders and the fiduciary responsibilities of our directors under Cayman Law are different from what they would be under statutes or judicial precedent in some jurisdictions in the United States. In particular, the Cayman Islands has a different body of securities laws as compared to the United States, and certain states, such as Delaware, may have more fully developed and judicially interpreted bodies of corporate law. In addition, Cayman Islands companies may not have standing to initiate a shareholders derivative action in a federal court of the United States.

We have been advised by Maples and Calder (Cayman) LLP, our Cayman Islands legal counsel, that the courts of the Cayman Islands are unlikely (i) to recognize or enforce against us judgments of courts of the United States predicated upon the civil liability provisions of the federal securities laws of the United States or any state; and (ii) in original actions brought in the Cayman Islands, to impose liabilities against us predicated upon the civil liability provisions of the federal securities laws of the United States or any state, so far as the liabilities imposed by those provisions are penal in nature. In those circumstances, although there is no statutory enforcement in the Cayman Islands of judgments obtained in the United States, the courts of the Cayman Islands will recognize and enforce a foreign money judgment of a foreign court of competent jurisdiction without retrial on the merits based on the principle that a judgment of a competent foreign court imposes upon the judgment debtor an obligation to pay the sum for which judgment has been given provided certain conditions are met. For a foreign judgment to be enforced in the Cayman Islands, such judgment must be final and conclusive and for a liquidated sum, and must not be in respect of taxes or a fine or penalty, inconsistent with a Cayman Islands judgment in respect of the same matter, impeachable on the grounds of fraud or obtained in a manner, or be of a kind the enforcement of which is, contrary to natural justice or the public policy of the Cayman Islands (awards of punitive or multiple damages may well be held to be contrary to public policy). A Cayman Islands Court may stay enforcement proceedings if concurrent proceedings are being brought elsewhere.

As a result of all of the above, shareholders may have more difficulty in protecting their interests in the face of actions taken by management, members of our Board or controlling shareholders than they would as public shareholders of a U.S. company.

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#### PART II INFORMATION NOT REQUIRED IN PROSPECTUS

#### Item 14. Other Expenses of Issuance and Distribution.
The following table sets forth the expenses (other than underwriting discounts and commissions or agency fees and other items constituting underwriters' or agents' compensation, if any) expected to be incurred by us in connection with a possible offering of the ordinary shares registered under the registration statement of which this prospectus forms a part.

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| | |
|:---|:---|
| Securities and Exchange Commission Registration Fee  | $\* |
| FINRA Filing Fee  | $\*\* |
| Legal and Accounting Fees and Expenses  | $\*\* |
| Transfer Agents and Trustees' Fees and Expenses  | $\*\* |
| Miscellaneous  | $\*\* |
| Total  | $— |

---

\*

Unknown because the filing fee is being deferred pursuant to Rules 456(b) and 457(r) under the Securities Act.

\*\*

Fees and expenses will depend on the number and nature of the offerings, and cannot be estimated at this time. An estimate of the aggregate expenses in connection with the issuance and distribution of ordinary shares being offered will be included in any applicable prospectus supplement.

#### Item 15. Indemnification of Directors and Officers.
Cayman Law does not limit the extent to which a company's memorandum and articles of association may provide for indemnification of directors and officers, except to the extent any such provision may be held by Cayman Courts to be contrary to public policy, such as to provide indemnification against willful default, willful neglect, civil fraud or the consequences of committing a crime. The Registrant's Memorandum and Articles of Association provides, to the fullest extent permissible under Cayman Law, that its directors and officers shall be indemnified against any liability, action, proceeding, claim, demand, costs damages or expenses, including legal expenses, incurred in their capacities as such unless such liability (if any) arises from actual fraud, willful neglect or willful default, as determined by a court of competent jurisdiction in a final non-appealable order.

The Registrant has entered into indemnification agreements with each of its directors and officers that provide for, among other things, indemnification to the fullest extent permitted by law against any and all expenses, judgments, fines, penalties and amounts paid in settlement (with the Registrant's consent) of any threatened, pending or completed action, suit or proceeding, whether civil, criminal, administrative or investigative. The indemnification agreements also provide for the advancement or payment of all expenses to the Registrant's directors and officers and for reimbursement of such advanced expenses to the Registrant if it is found that such director or officer is not entitled to such indemnification under applicable law.

The Registrant has obtained a general liability insurance policy that covers certain liabilities of its directors and officers arising out of claims based on acts or omissions in their capacities as directors or officers.

Insofar as indemnification for liabilities arising under the Securities Act may be permitted to the Registrant, its directors, its officers or persons who control the Registrant pursuant to the foregoing provisions, the Registrant has been informed that, in the opinion of the SEC, such indemnification is against public policy as expressed in the Securities Act and is therefore unenforceable.

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#### Item 16. Exhibits.
The Exhibits to this registration statement are listed in the Exhibit Index set forth below.

---

| | |
|:---|:---|
| **Exhibit <br> No.**  | **Description of Exhibits**  |
| &nbsp;&nbsp; 1.1\* | Form of Underwriting Agreement. |
| &nbsp;&nbsp; 3.1 | [Amended and Restated Memorandum and Articles of Association of the Registrant (incorporated by reference to Exhibit 4.2 filed with the Registrant's Registration Statement on Form S-8 (File No. 333-273518), filed with the SEC on July 28, 2023).](http://www.sec.gov/Archives/edgar/data/1957132/000110465923085367/tm2322218d1_ex4-2.htm) |
| &nbsp;&nbsp; 4.1 | [Specimen Share Certificate, evidencing the ordinary shares of the Registrant (incorporated by reference to Exhibit 4.1 to the Registrant's Registration Statement on Form F-1/A (File No. 333-272973), filed with the SEC on July 11, 2023).](http://www.sec.gov/Archives/edgar/data/1957132/000110465923079846/tm2232060d10_ex4-1.htm) |
| &nbsp;&nbsp; 5.1 | [Opinion of Maples and Calder (Cayman) LLP.](tm266681d3_ex5-1.htm)  |
| 23.1 | [Consent of Ernst & Young LLP, independent registered public accounting firm.](tm266681d3_ex23-1.htm)  |
| 23.2 | [Consent of Maples and Calder (Cayman) LLP (included in Exhibit 5.1).](tm266681d3_ex5-1.htm)  |
| 24.1 | [Powers of Attorney (included on signature pages hereto).](#tSIG)  |
| 107 | [Filing Fee Table (incorporated by reference to Exhibit 107 to the Registrant's Registration Statement on Form F-3 (File No. 333-289729), filed with the SEC on August 20, 2025).](https://www.sec.gov/ix?doc=/Archives/edgar/data/1957132/000110465925080923/tm2523852d1_ex-filingfees.htm) |

---

\*

To be filed by amendment to the Registration Statement or incorporated by reference from documents filed or to be filed with the SEC under the Securities Exchange Act of 1934, as amended.

#### Item 17. Undertakings.
The undersigned registrant hereby undertakes:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (1)

To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (i)

To include any prospectus required by Section 10(a)(3) of the Securities Act of 1933;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (ii)

To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the registration statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the SEC pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than 20 percent change in the maximum aggregate offering price set forth in the "Calculation of Registration Fee" table in the effective registration statement;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (iii)

To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement;

provided, however, that paragraphs (i), (ii) and (iii) of this section do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in reports filed with or furnished to the SEC by the registrant pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934 that are incorporated by reference in this registration statement, or is contained in a form of prospectus filed pursuant to Rule 424(b) that is part of this registration statement;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (2)

That, for the purpose of determining any liability under the Securities Act of 1933, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

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&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; (3)

To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (4)

That, for the purpose of determining liability under the Securities Act of 1933 to any purchaser:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (i)

Each prospectus filed by the registrant pursuant to Rule 424(b)(3) shall be deemed to be part of this registration statement as of the date the filed prospectus was deemed part of and included in this registration statement; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (ii)

Each prospectus required to be filed pursuant to Rule 424(b)(2), (b)(5), or (b)(7) as part of a registration statement in reliance on Rule 430B relating to an offering made pursuant to Rule 415(a)(1)(i), (vii) or (x) for the purpose of providing the information required by section 10(a) of the Securities Act of 1933 shall be deemed to be part of and included in this registration statement as of the earlier of the date such form of prospectus is first used after effectiveness or the date of the first contract of sale of securities in the offering described in the prospectus. As provided in Rule 430B, for liability purposes of the issuer and any person that is at that date an underwriter, such date shall be deemed to be a new effective date of the registration statement relating to the securities in the registration statement to which that prospectus relates, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. Provided, however, that no statement made in a registration statement or prospectus that is part of this registration statement or made in a document incorporated or deemed incorporated by reference into this registration statement or prospectus that is part of this registration statement will, as to a purchaser with a time of contract of sale prior to such effective date, supersede or modify any statement that was made in this registration statement or prospectus that was part of this registration statement or made in any such document immediately prior to such effective date.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (5)

That, for the purpose of determining liability of the registrant under the Securities Act of 1933 to any purchaser in the initial distribution of the securities, the undersigned registrant undertakes that in a primary offering of securities of the undersigned registrant pursuant to this registration statement, regardless of the underwriting method used to sell the securities to the purchaser, if the securities are offered or sold to such purchaser by means of any of the following communications, the undersigned registrant will be a seller to the purchaser and will be considered to offer or sell such securities to such purchaser:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (i)

Any preliminary prospectus or prospectus of the undersigned registrant relating to the offering required to be filed pursuant to Rule 424;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (ii)

Any free writing prospectus relating to the offering prepared by or on behalf of the undersigned registrant or used or referred to by the undersigned registrant;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (iii)

The portion of any other free writing prospectus relating to the offering containing material information about the undersigned registrant or its securities provided by or on behalf of the undersigned registrant; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (iv)

Any other communication that is an offer in the offering made by the undersigned registrant to the purchaser.

The undersigned registrant hereby undertakes that, for purposes of determining any liability under the Securities Act of 1933, each filing of the registrant's annual report pursuant to Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934 (and, where applicable, each filing of an employee benefit plan's annual report pursuant to Section 15(d) of the Securities Exchange Act of 1934) that is incorporated by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the SEC such indemnification is against public

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policy as expressed in the Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Act and will be governed by the final adjudication of such issue.

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#### SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3 and has duly caused this Post-Effective Amendment No. 1 to Form F-3 on Form S-3 to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Needham, Commonwealth of Massachusetts on March 2, 2026.

#### SHARKNINJA, INC.
By:

/s/ Mark Barrocas

Name: Mark Barrocas

Title: Chief Executive Officer

In accordance with the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates stated. Each person whose signature appears below constitutes and appoints Mark Barrocas and Adam Quigley and each of them severally, as his or her true and lawful attorney-in-fact and agent, each acting along with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign any or all amendments (including post-effective amendments) and exhibits to the Registration Statement, and to any registration statement filed under SEC Rule 462, and to file the same, with all exhibits thereto, and all documents in connection therewith, with the SEC, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities indicated on March 2, 2026.

---

| | |
|:---|:---|
| **Signature**  | **Title**  |
| /s/ Mark Barrocas <br>Mark Barrocas  | Chief Executive Officer and Director (Principal Executive Officer) |
| /s/ Adam Quigley <br>Adam Quigley  | Chief Financial Officer (Principal Financial Officer) |
| /s/ Kaitlin Folan <br>Kaitlin Folan  | Chief Accounting Officer (Principal Accounting Officer) |
| **\*** <br>CJ Xuning Wang  | Director |
| **\*** <br>Kathryn J. Barton  | Director |
| **\*** <br>Peter Feld  | Director |
| **\*** <br>Chi Kin Max Hui  | Director |
| **\*** <br>Dennis Paul  | Director |

---

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---

| | |
|:---|:---|
| **Signature**  | **Title**  |
| **\*** <br>Barney Tianhao Wang  | Director |
| **\*** <br>Timothy R. Warner  | Director |
| /s/ Jason Wortendyke <br>Jason Wortendyke  | Director |

---

\*By:

/s/ Mark Barrocas

Mark Barrocas

Attorney-in-fact

#### SIGNATURE OF AUTHORIZED U.S. REPRESENTATIVE OF THE REGISTRANT
Pursuant to the requirements of the Securities Act of 1933, as amended, the undersigned certifies that it is the duly authorized United States representative of the Registrant and has duly caused this registration statement to be signed by the undersigned, thereunto duly authorized, in the city of Needham, Commonwealth of Massachusetts on March 2, 2026.

#### SHARKNINJA, INC.
By:

/s/ Mark Barrocas

Name: Mark Barrocas

Title: Chief Executive Officer

------

## Exhibit 5.1

**Exhibit 5.1**

![](tm266681d3_ex5-1img001.jpg)

SharkNinja, Inc.

PO Box 309, Ugland House

Grand Cayman

KY1-1104

Cayman Islands

March 2, 2026

**SharkNinja, Inc.**

We have acted as counsel as to Cayman Islands law to SharkNinja. Inc. (the "**Company**") in connection with the Company's post-effective amendment no.1 to registration statement on Form F-3 (the "**Prior Registration Statement**") on registration statement on Form S-3, including all amendments or supplements thereto, filed with the United States Securities and Exchange Commission (the "**Commission**") under the United States Securities Act of 1933, as amended (the "**Act**") (including its exhibits, the "**Registration Statement**") for the purposes of, registering with the Commission under the Act, the: (i) offering and sale to the public certain ordinary shares of par value of US$0.0001 each in the Company (the "**Ordinary Shares**") by the Company (the "**Primary Shares**"); and (ii) the offering and sale to the public of certain Ordinary Shares by certain selling shareholders (the "**Selling Shareholders**") (the "**Secondary Shares**" and together with the Primary Shares, the "**Shares**"), that were registered under the Prior Registration Statement from time to time in one or more offerings.

This opinion letter is given in accordance with the terms of the Legal Matters section of the Registration Statement.

---

| | |
|:---|:---|
| **1** | **Documents Reviewed** |

---

We have reviewed originals, copies, drafts or conformed copies of the following documents:

1.1 The certificate of incorporation dated 17 May 2023 and the amended and restated memorandum and articles
of association of the Company as registered or adopted 28 July 2023 (the "**Memorandum and Articles** ").

1.2 The written resolutions of the board of directors of the Company dated 28 June 2023 (the "**First Resolutions** "), 28 July 2023 (the "**Second Resolutions** "), 28 November 2023 (the "**Third Resolutions** "),
6 March 2024 (the "**Fourth Resolutions**" and together with the First Resolutions, Second Resolutions and Third Resolutions,
the "**Resolutions** "), and the certified extract of the minutes (the "**First Minutes**") of the meeting of
the board of directors of the Company held on 18 August 2025 (the "**First Meeting**") and the certified extract of
the minutes (the "**Second Minutes**" and together with the First Minutes, the "**Minutes**") of the meeting
of the board of directors of the Company held of 25 February 2026 (the "**Second Meeting**" and together with the First
Meeting, the "**Meetings** ").

![](tm266681d3_ex5-1img002.jpg)

1.3 The following corporate records of the Company maintained at its registered office in the Cayman Islands,
each as at the date of this opinion letter:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) Register of Directors and Officers; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Register of Mortgages and Charges.

1.4 A certificate of good standing with respect to the Company issued by the Registrar of Companies (the "**Certificate of Good Standing** ").

1.5 A certificate from a director of the Company a copy of which is attached to this opinion letter (the "**Director's Certificate** ").

1.6 The Registration Statement.

1.7 The Prior Registration Statement.

1.8 The underwriting agreement among the Company, Goldman Sachs & Co. LLC and J.P. Morgan Securities
LLC, as representatives of the several Underwriters named in Schedule I thereto (the "**Representatives** "), and certain
Selling Shareholders dated December 2023.

1.9 The underwriting agreement among the Company, the Representatives and certain Selling Shareholders dated
March 2024.

1.10 The Underwriting Agreement among the Company, the Representatives and certain Selling Shareholders dated
August 2025.

The documents listed in paragraphs 1.6 to 1.10 inclusive above shall be referred to collectively herein as the "**Documents**".

---

| | |
|:---|:---|
| **2** | **Assumptions** |

---

The following opinions are given only as to, and based on, circumstances and matters of fact existing and known to us on the date of this opinion letter. These opinions only relate to the laws of the Cayman Islands which are in force on the date of this opinion letter. In giving the following opinions, we have relied (without further verification) upon the completeness and accuracy, as at the date of this opinion letter, of the Director's Certificate and the Certificate of Good Standing. We have also relied upon the following assumptions, which we have not independently verified:

2.1 The Documents have been or will be authorised and duly executed and unconditionally delivered by or on
behalf of all relevant parties in accordance with all relevant laws (other than, with respect to the Company, the laws of the Cayman Islands).

2.2 The Documents are, or will be, legal, valid, binding and enforceable against all relevant parties in accordance
with their terms under the laws of the State of New York (the "**Relevant Law**") and all other relevant laws (other than,
with respect to the Company, the laws of the Cayman Islands).

2.3 The choice of the Relevant Law as the governing law of the Documents has been made in good faith and would
be regarded as a valid and binding selection which will be upheld by the courts of the State of New York and any other relevant jurisdiction
(other than the Cayman Islands) as a matter of the Relevant Law and all other relevant laws (other than the laws of the Cayman Islands).

2.4 Copies of documents, conformed copies or drafts of documents provided to us are true and complete copies
of, or in the final forms of, the originals.

2.5 All signatures, initials and seals are genuine.

2.6 The capacity, power, authority and legal right of all parties under all relevant laws and regulations
(other than, with respect to the Company, the laws and regulations of the Cayman Islands) to enter into, execute, unconditionally deliver
and perform their respective obligations under the Documents.

2.7 No invitation has been or will be made by or on behalf of the Company to the public in the Cayman Islands
to subscribe for any of the Shares.

2.8 There is no contractual or other prohibition or restriction (other than as arising under Cayman Islands
law) binding on the Company prohibiting or restricting it from entering into and performing its obligations under the Documents.

2.9 No monies paid to or for the account of any party under the Documents or any property received or disposed
of by any party to the Documents in each case in connection with the Documents or the consummation of the transactions contemplated thereby
represent or will represent proceeds of criminal conduct or criminal property or terrorist property (as defined in the Proceeds of Crime
Act (As Revised) and the Terrorism Act (As Revised), respectively).

2.10 There is nothing contained in the minute book or corporate records of the Company (which, other than the
records set out in paragraph 1.3 of this opinion letter, we have not inspected) which would or might affect the opinions set out below.

2.11 There is nothing under any law (other than the laws of the Cayman Islands) which would or might affect
the opinions set out below. Specifically, we have made no independent investigation of the Relevant Law.

2.12 The Company will receive money or money's worth in consideration for the issue of the Shares and none
of the Shares were or will be issued for less than par value.

Save as aforesaid we have not been instructed to undertake and have not undertaken any further enquiry or due diligence in relation to the transaction the subject of this opinion letter.

---

| | |
|:---|:---|
| **3** | **Opinions** |

---

Based upon, and subject to, the foregoing assumptions and the qualifications set out below, and having regard to such legal considerations as we deem relevant, we are of the opinion that:

3.1 The Company has been duly incorporated as an exempted company with limited liability and is validly existing
and in good standing with the Registrar of Companies under the laws of the Cayman Islands.

3.2 The Primary Shares to be offered and issued by the Company as contemplated by the Registration Statement
have been duly authorised for issue, and when issued by the Company against payment in full of the consideration as set out in the Registration
Statement and in accordance with the terms set out in the Registration Statement, such Primary Shares will be validly issued, fully paid
and non-assessable. As a matter of Cayman Islands law, a share is only issued when it has been entered in the register of members (shareholders).

3.3 The Secondary Shares to be offered and sold by the Selling Shareholders as contemplated by the Registration
Statement have been duly authorised for issue, and such Secondary Shares are validly issued, fully paid and non-assessable. As a matter
of Cayman Islands law, a share is only issued when it has been entered in the register of members (shareholders).

3.4 The execution, delivery and performance of the Documents have been authorised by and on behalf of the
Company and, once the Documents have been executed and delivered by any director or officer of the Company, the Documents will be duly
executed and delivered on behalf of the Company and will constitute the legal, valid and binding obligations of the Company enforceable
in accordance with their terms.

---

| | |
|:---|:---|
| **4** | **Qualifications** |

---

The opinions expressed above are subject to the following qualifications:

4.1 The obligations assumed by the Company under the Documents will not necessarily be enforceable in all
circumstances in accordance with their terms. In particular:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) enforcement may be limited by bankruptcy, insolvency, liquidation, reorganisation, readjustment of debts
or moratorium or other laws of general application relating to protecting or affecting the rights of creditors and/or contributories;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) enforcement may be limited by general principles of equity. For example, equitable remedies such as specific
performance may not be available, *inter alia*, where damages are considered to be an adequate remedy;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) where obligations are to be performed in a jurisdiction outside the Cayman Islands, they may not be enforceable
in the Cayman Islands to the extent that performance would be illegal under the laws of that jurisdiction; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) some claims may become barred under relevant statutes of limitation or may be or become subject to defences
of set off, counterclaim, estoppel and similar defences.

4.2 To maintain the Company in good standing with the Registrar of Companies under the laws of the Cayman
Islands, annual filing fees must be paid and returns made to the Registrar of Companies within the time frame prescribed by law.

4.3 Under Cayman Islands law, the register of members (shareholders) is *prima facie* evidence of title
to shares and this register would not record a third party interest in such shares. However, there are certain limited circumstances where
an application may be made to a Cayman Islands court for a determination on whether the register of members reflects the correct legal
position. Further, the Cayman Islands court has the power to order that the register of members maintained by a company should be rectified
where it considers that the register of members does not reflect the correct legal position. As far as we are aware, such applications
are rarely made in the Cayman Islands and for the purposes of the opinion given in paragraph 3.2, there are no circumstances or matters
of fact known to us on the date of this opinion letter which would properly form the basis for an application for an order for rectification
of the register of members of the Company, but if such an application were made in respect of the Shares,
then the validity of such shares may be subject to re-examination by a Cayman Islands court.

4.4 In this opinion letter the phrase "non-assessable" means, with respect to the issuance of shares,
that a shareholder shall not, in respect of the relevant shares and in the absence of a contractual arrangement, or an obligation pursuant
to the memorandum and articles of association, to the contrary, have any obligation to make further contributions to the Company's assets
(except in exceptional circumstances, such as involving fraud, the establishment of an agency relationship or an illegal or improper purpose
or other circumstances in which a court may be prepared to pierce or lift the corporate veil).

We hereby consent to the filing of this opinion letter as an exhibit to the Registration Statement and to the references to our firm under the headings "Legal Matters", "Risk Factors", "Shareholders' Suits" and "Enforcement of Civil Liabilities" in the prospectus included in the Registration Statement. In providing our consent, we do not thereby admit that we are in the category of persons whose consent is required under section 7 of the Act or the Rules and Regulations of the Commission thereunder.

We express no view as to the commercial terms of the Documents or whether such terms represent the intentions of the parties and make no comment with regard to warranties or representations that may be made by the Company.

The opinions in this opinion letter are strictly limited to the matters contained in the opinions section above and do not extend to any other matters. We have not been asked to review and we therefore have not reviewed any of the ancillary documents relating to the Documents and express no opinion or observation upon the terms of any such document.

This opinion letter is addressed to you and may be relied upon by you, your counsel and purchasers of Units pursuant to the Registration Statement. This opinion letter is limited to the matters detailed herein and is not to be read as an opinion with respect to any other matter.

Yours faithfully

/s/ Maples and Calder (Cayman) LLP

Maples and Calder (Cayman) LLP

SharkNinja, Inc.

PO Box 309, Ugland House

Grand Cayman

KY1-1104

Cayman Islands

---

| | |
|:---|:---|
| To: | Maples and Calder (Cayman) LLP |
|  | PO Box 309, Ugland House |
|  | Grand Cayman |
|  | KY1-1104 |
|  | Cayman Islands |

---

March 2, 2026

**SharkNinja, Inc.** (the "**Company**")

I, the undersigned, being a director of the Company, am aware that you are being asked to provide an opinion letter (the "**Opinion**") in relation to certain aspects of Cayman Islands law. Unless otherwise defined herein, capitalised terms used in this certificate have the respective meanings given to them in the Opinion. I hereby certify that:

1 The Memorandum and Articles remain in full force and effect and are unamended.

2 The Company has not entered into any mortgages or charges over its property or assets other than those entered in the register of mortgages and charges of the Company.

3 The Resolutions were duly passed in the manner prescribed in the Memorandum and Articles (including, without limitation, with respect to the disclosure of interests (if any) by directors of the Company) and have not been amended, varied or revoked in any respect.

---

| | |
|:---|:---|
| 4 | The Minutes are a true and correct record of the proceedings of the Meetings, which were duly convened and held, and at which a quorum was present throughout, in each case, in the manner prescribed in the Memorandum and Articles. The resolutions set out in the Minutes were duly passed in the manner prescribed in the Memorandum and Articles (including, without limitation, with respect to the disclosure of interests (if any) by directors of the Company) and have not been amended, varied or revoked in any respect. |

---

---

| | |
|:---|:---|
| 5 | The authorised share capital of the Company is US$110,000 divided into 1,000,000,000 ordinary shares of a par value of US$0.0001 each and 100,000,000 preferred shares of a par value of US$0.0001. |

---

---

| | |
|:---|:---|
| 6 | The shareholders of the Company (the "**Shareholders**") have not restricted the powers of the directors of the Company in any way. |

---

---

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|:---|:---|
| 7 | The directors of the Company at the date of the First Resolutions and the Second Resolutions were Xuning Wang and Mark Barrocas. The directors of the Company at the date of the Third Resolutions and the Fourth Resolutions were as follows: Xuning Wang, Mark Barrocas, Peter Feld, Wendy Hayes, Chi Kin Max Hui, Dennis Paul and Timothy R. Warner. The directors of the Company at the date of the First Meeting were as follows: CJ Xuning Wang, Mark Barrocas, Kathryn Barton, Peter Feld, Chi Kin Max Hui, Dennis Paul, Timothy R. Warner, and Barney Tianhao Wang. The directors of the Company at the date of the Second Meeting and the date of this certificate are as follows: CJ Xuning Wang, Mark Barrocas, Peter Feld, Chi Kin Max Hui, Dennis Paul, Timothy R. Warner, Kathryn Barton, Barney Tianhao Wang, and Jason Wortendyke. |

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| 8 | The minute book and corporate records of the Company as maintained at its registered office in the Cayman Islands and made available to you are complete and accurate in all material respects, and all minutes and resolutions filed therein represent a complete and accurate record of all meetings of the Shareholders and directors (or any committee thereof) of the Company (duly convened in accordance with the Memorandum and Articles) and all resolutions passed at the meetings or passed by written resolution or consent, as the case may be. |

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| 9 | Prior to, at the time of, and immediately following the approval of the transactions contemplated by the Registration Statement, the Company was, or will be, able to pay its debts as they fell, or fall, due and has entered, or will enter, into the transactions contemplated by the Registration Statement for proper value and not with an intention to defraud or wilfully defeat an obligation owed to any creditor or with a view to giving a creditor a preference. |

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| 10 | Each director of the Company considers the transactions contemplated by the Registration Statement to be of commercial benefit to the Company and has acted in good faith in the best interests of the Company, and for a proper purpose of the Company, in relation to the transactions which are the subject of the Opinion. |

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| 11 | To the best of my knowledge and belief, having made due inquiry, the Company is not the subject of legal, arbitral, administrative or other proceedings in any jurisdiction and neither the directors nor Shareholders have taken any steps to have the Company struck off or placed in liquidation. Further, no steps have been taken to wind up the Company or to appoint restructuring officers or interim restructuring officers, and no step has been taken to appoint a receiver in relation to any of the Company's property or assets. |

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12 To the best of my knowledge and belief, having made due inquiry, there are no circumstances or matters of fact existing which may properly form the basis for an application for an order for rectification of the register of members of the Company.

13 The Registration Statement has been, or will be, authorised and duly executed and delivered by or on behalf of all relevant parties in accordance with all relevant laws.

14 No invitation has been made or will be made by or on behalf of the Company to the public in the Cayman Islands to subscribe for any of the Shares.

15 The Shares to be issued pursuant to the Registration Statement have been, or will be, duly registered, and will continue to be registered, in the Company's register of members (shareholders).

16 The Company is not a central bank, monetary authority or other sovereign entity of any state and is not a subsidiary, direct or indirect, of any sovereign entity or state.

17 There is no contractual or other prohibition or restriction (other than as arising under Cayman Islands law) binding on the Company prohibiting or restricting it from entering into and performing its obligations under the Documents.

(Signature Page follows)

I confirm that you may continue to rely on this certificate as being true and correct on the day that you issue the Opinion unless I shall have previously notified you in writing personally to the contrary.

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| Signature: | /s/ Mark Barrocas |
| Name: | Mark Barrocas |
| Title: | Director |

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## Exhibit 23.1

**Exhibit 23.1**

**Consent of Independent Registered Public Accounting Firm**

We consent to the reference to our firm under the caption "Experts" and to the use of our reports dated March 2, 2026, incorporated by reference in this Post-Effective Amendment No. 1 to the Registration Statement (Form F-3 No. 333-289729) on Form S-3 and related Prospectus of SharkNinja, Inc. for the registration of ordinary shares.

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| /s/ Ernst & Young LLP |
| Boston, Massachusetts |
| March 2, 2026 |

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