# EDGAR Filing Document

**Accession Number:** 0001780652
**File Stem:** 0001104659-26-015204
**Filing Date:** 2026-2
**Character Count:** 13244
**Document Hash:** 4231efdedb1755aaa25c8e7367c9cd41
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-015204.hdr.sgml**: 20260213

**ACCESSION NUMBER**: 0001104659-26-015204

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13G/A

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260213

**DATE AS OF CHANGE**: 20260213

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Canaan Inc.
- **CENTRAL INDEX KEY:** 0001780652
- **STANDARD INDUSTRIAL CLASSIFICATION:** FINANCE SERVICES [6199]
- **ORGANIZATION NAME:** 09 Crypto Assets
- **EIN:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-91380
- **FILM NUMBER:** 26632844

**BUSINESS ADDRESS:**
- **STREET 1:** 28 AYER RAJAH CRESCENT
- **STREET 2:** #06-08
- **CITY:** SINGAPORE
- **STATE:** U0
- **ZIP:** 139959
- **BUSINESS PHONE:** 65 6305 6618

**MAIL ADDRESS:**
- **STREET 1:** 28 AYER RAJAH CRESCENT
- **STREET 2:** #06-08
- **CITY:** SINGAPORE
- **STATE:** U0
- **ZIP:** 139959
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Zhang Nangeng
- **CENTRAL INDEX KEY:** 0001802993

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A

**MAIL ADDRESS:**
- **STREET 1:** 30/F, DICARA SILVER TOWER
- **STREET 2:** 29 JIEFANG EAST ROAD, JIANGGAN DISTRICT
- **CITY:** HANGZHOU
- **STATE:** F4
- **ZIP:** 310016

## Exhibit 99.1

**<u>Exhibit 99.1</u>**

**<u>Joint Filing Agreement</u>**

In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the Class A ordinary shares, US$0.00000005 par value per share, of Canaan Inc., a Cayman Islands company, and that this Agreement may be included as an Exhibit to such joint filing. This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.

[Signature Page Follows]

IN WITNESS WHEREOF, the undersigned hereby execute this Agreement as of February 13, 2026.

---

| | |
|:---|:---|
| **Nangeng Zhang** | **Nangeng Zhang** |
| By: | /s/ Nangeng Zhang |
| Name: | Nangeng Zhang |
| **Flueqel Ltd.** | **Flueqel Ltd.** |
| By: | /s/ Nangeng Zhang |
| Name: | Nangeng Zhang |
| Title: | Authorized Signatory |

---

*[Signature Page to the Joint Filing Agreement]*

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

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**(Amendment No. 6)**

**Issuer:** Canaan Inc.

**Title of Class of Securities:** Class A ordinary shares, par value US$0.00000005 per share

**CUSIP Number:** 134748102

**Date of Event Which Requires Filing of this Statement:** 12/31/2025

**Check the appropriate box to designate the rule pursuant to which this Schedule is filed:**

- [ ] Rule 13d-1(b)

- [ ] Rule 13d-1(c)

- [x] Rule 13d-1(d)

---

| 1. | Names of Reporting Persons<br>Zhang Nangeng | Names of Reporting Persons<br>Zhang Nangeng |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>F4 | Citizenship or Place of Organization<br>F4 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>576066269.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>576066269.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>0.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>576066269.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>576066269.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>5.8% | Percent of Class Represented by Amount in Row (9)<br>5.8% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

**Comment for Type of Reporting Person:** (1) Represent (a) 311,624,444 Class B ordinary shares held by Flueqel Ltd., each of which is convertible into one Class A ordinary share by Flueqel at any time, and (b) 264,441,825 Class A ordinary shares.

Flueqel Ltd. is indirectly wholly owned by a trust of which Nangeng Zhang is the beneficiary. Accordingly, Nangeng Zhang may thereby be deemed to beneficially own the 311,624,444 Class B ordinary shares owned by Flueqel Ltd.

(2) The percentage of the class of securities beneficially owned by each reporting person is calculated based on 9,939,193,337 issued and outstanding ordinary shares as a single class, being the sum of 9,627,568,893 Class A ordinary shares of the Issuer issued and outstanding and 311,624,444 Class B ordinary shares beneficially owned by the reporting person as of December 31, 2025, assuming conversion of all Class B ordinary shares into Class A ordinary shares.

(3) The voting power of the shares beneficially owned by Mr. Nangeng Zhang represents 34.5% of the total voting power. The percentage of voting power is calculated by dividing the voting power beneficially owned by such person or group by the voting power of all of Class A ordinary shares of the Issuer issued and outstanding and Class B ordinary shares beneficially owned by the reporting person as of December 31, 2025. In respect of all matters subject to a shareholders' vote, each Class A ordinary share is entitled to one vote, and each Class B ordinary share is entitled to 15 votes, voting together as one class. Each Class B ordinary share is convertible into one Class A ordinary share at any time by the holder thereof. Class A ordinary shares are not convertible into Class B ordinary shares under any circumstances.

---

| 1. | Names of Reporting Persons<br>Flueqel Ltd. | Names of Reporting Persons<br>Flueqel Ltd. |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>D8 | Citizenship or Place of Organization<br>D8 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>311624444.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>311624444.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>0.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>311624444.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>311624444.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>3.1% | Percent of Class Represented by Amount in Row (9)<br>3.1% |
| 12. | Type of Reporting Person (See Instructions)<br>CO | Type of Reporting Person (See Instructions)<br>CO |

**Comment for Type of Reporting Person:** (1) Represents 311,624,444 shares held by Flueqel Ltd.

(2) The percentage of the class of securities beneficially owned by each reporting person is calculated based on 9,939,193,337 ordinary shares as a single class, being the sum of 9,627,568,893 Class A ordinary shares of the Issuer issued and outstanding and 311,624,444 Class B ordinary shares beneficially owned by the reporting person as of December 31, 2025, assuming conversion of all Class B ordinary shares into Class A ordinary shares.

(3) The voting power of the shares beneficially owned by Flueqel Ltd., represent 32.7% of the total voting power. The percentage of voting power is calculated by dividing the voting power beneficially owned by such person or group by the voting power of all of Class A ordinary shares of the Issuer issued and outstanding and Class B ordinary shares beneficially owned by the reporting person as of December 31, 2025. In respect of all matters subject to a shareholders' vote, each Class A ordinary share is entitled to one vote, and each Class B ordinary share is entitled to 15 votes, voting together as one class. Each Class B ordinary share is convertible into one Class A ordinary share at any time by the holder thereof. Class A ordinary shares are not convertible into Class B ordinary shares under any circumstances.

---

**Item 1(a). Name of Issuer:**
Canaan Inc.

**Item 1(b). Address of Issuer's Principal Executive Offices:**
28 AYER RAJAH CRESCENT, #06-08, Singapore, SINGAPORE 139959

**Item 2(a). Name of Person Filing:**
(i) Nangeng Zhang, a citizen of the People's Republic of China; and

(ii) Flueqel Ltd., a company organized under the law of the British Virgin Islands and indirectly wholly owned by a trust of which Nangeng Zhang is the beneficiary.

**Item 2(b). Address of Principal Business Office:**
(i) The address of Nangeng Zhang is 28 Ayer Rajah Crescent #06-08, S139959, Singapore.

(ii) The registered address of Flueqel Ltd. is Sertus Chambers, P.O. Box 905, Quastisky Building, Road Town, Tortola, British Virgin Islands.

**Item 2(c). Citizenship:**
Nangeng Zhang is a citizen of the People's Republic of China. Flueqel is organized under the law of the British Virgin Islands.

**Item 2(d). Title of Class of Securities:**
Class A ordinary shares, par value US$0.00000005 per share

**Item 2(e). CUSIP Number:**
134748102

**Item 3. If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:**

(a) [ ] Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b) [ ] Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c) [ ] Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d) [ ] Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).

(e) [ ] An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f) [ ] An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g) [ ] A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h) [ ] A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i) [ ] A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j) [ ] A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), if filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:

(k) [ ] Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).

**Item 4. Ownership:**

**(a) Amount beneficially owned:**

See Row (9) of each cover page.

**(b) Percent of class:**

See Row (11) of each cover page.

**(c) Number of shares as to which the person has:**

**(i) Sole power to vote or to direct the vote:**

See Row (5) of each cover page.

**(ii) Shared power to vote or to direct the vote:**

See Row (6) of each cover page.

**(iii) Sole power to dispose or to direct the disposition of:**

See Row (7) of each cover page.

**(iv) Shared power to dispose or to direct the disposition of:**

See Row (8) of each cover page.

**Item 5. Ownership of Five Percent or Less of a Class.**

[x] If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following.

**Item 6. Ownership of More than 5 Percent on Behalf of Another Person.**

Not Applicable

**Item 7. Identification and Classification of the Subsidiary**

Not Applicable

**Item 8. Identification and Classification of Members of the Group**

Not Applicable

**Item 9. Notice of Dissolution of Group**

Not Applicable

**Item 10. Certification:**

—

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Zhang Nangeng**

**Date:** 02/13/2026

**By:** /s/ Nangeng Zhang

**Name & Title:** Nangeng Zhang

**Flueqel Ltd.**

**Date:** 02/13/2026

**By:** /s/ Nangeng Zhang

**Name & Title:** Nangeng Zhang/Authorized Signatory