# EDGAR Filing Document

**Accession Number:** 0002057625
**File Stem:** 0001213900-25-116719
**Filing Date:** 2025-12
**Character Count:** 7922
**Document Hash:** c0d7580832aca9cbae4ebccb66f7c828
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-25-116719.hdr.sgml**: 20251201

**ACCESSION NUMBER**: 0001213900-25-116719

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

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251201

**DATE AS OF CHANGE**: 20251201

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Ridgetech Inc.
- **CENTRAL INDEX KEY:** 0001856084
- **STANDARD INDUSTRIAL CLASSIFICATION:** RETAIL-DRUG STORES AND PROPRIETARY STORES [5912]
- **ORGANIZATION NAME:** 07 Trade & Services
- **EIN:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-93986
- **FILM NUMBER:** 251540016

**BUSINESS ADDRESS:**
- **STREET 1:** 4TH FLOOR, BUILDING 5, RENXIN YAJU
- **STREET 2:** GONG SHU DISTRICT
- **CITY:** HANGZHOU CITY
- **STATE:** F4
- **ZIP:** 310014
- **BUSINESS PHONE:** 8657188219579

**MAIL ADDRESS:**
- **STREET 1:** 4TH FLOOR, BUILDING 5, RENXIN YAJU
- **STREET 2:** GONG SHU DISTRICT
- **CITY:** HANGZHOU CITY
- **STATE:** F4
- **ZIP:** 310014

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** China Jo-Jo Drugstores, Inc.
- **DATE OF NAME CHANGE:** 20230705

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** China Jo-Jo Drugstores Holdings, Inc.
- **DATE OF NAME CHANGE:** 20210408
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Kong Lingtao
- **CENTRAL INDEX KEY:** 0002057625

**ORGANIZATION NAME:**

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

**MAIL ADDRESS:**
- **STREET 1:** 23 SUNG ON STREET, UPPER EAST, HUNG HOM
- **STREET 2:** FLAT M 17/F, TOWER 1C
- **CITY:** HONG KONG
- **STATE:** K3
- **ZIP:** 000000

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

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 1)**

**RIDGETECH INC.**

*(Name of Issuer)*

**Ordinary Shares, par value $0.001 per share**

*(Title of Class of Securities)*

**G2124G120**

*(CUSIP Number)*

**Lingtao Kong**<br>5th Flr, Bld 6, No.100, 18th St, Baiyang<br>Sub Dist, antang Dist, Zhejiang Province<br>Hangzhou City F4 310008<br>86-571-88219579

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**11/24/2025**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **G2124G120** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**LINGTAO KONG** | Name of reporting person<br>**LINGTAO KONG** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**HONG KONG** | Citizenship or place of organization<br>**HONG KONG** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**2225000.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**2225000.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**2225000.00** | Aggregate amount beneficially owned by each reporting person<br>**2225000.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**12.2%** | Percent of class represented by amount in Row (11)<br>**12.2%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** (1) The percentage calculation is based on an aggregate of 18,285,638 ordinary shares outstanding as of the date of this report, based on information provided by the Issuer.

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Ordinary Shares, par value $0.001 per share

**(b) Name of Issuer:**
RIDGETECH INC.

**(c) Address of Issuer's Principal Executive Offices:**
5th Flr, Bld 6, No.100, 18th St, Baiyang Sub Dist, antang Dist, Zhejiang Province Hangzhou Cit, F4, 310008

This Amendment No. 1 to Schedule 13D (this "Amendment No. 1"), amends and supplements the Schedule 13D filed by the Reporting Person on March 6, 2025 (the "Schedule 13D"), relating to the ordinary shares of Ridgetech Inc. (the "Issuer").

The Items below amend and supplement the information disclosed under the corresponding Items of the Schedule 13D as described below. Except as specifically provided herein, this Amendment No. 1 does not modify any of the information previously reported in the Schedule 13D.

**Item 5. Interest in Securities of the Issuer**

**(a)**
Item 5 of the Schedule 13D is hereby amended as set forth below.

Calculations of the percentage of shares of ordinary shares beneficially owned assumes that there were 18,285,638 ordinary shares outstanding as of the date of this report, based on information provided by the Issuer. The change in the Reporting Person's percentage beneficial ownership reported in this Amendment No. 1 resulted solely from the increase in the number of outstanding ordinary shares. The Reporting Person has not disposed of or acquired any ordinary shares since the filing of Schedule 13D on March 6, 2025.

The aggregate number and percentage of the ordinary shares beneficially owned by the Reporting Person, the number of shares as to which there is sole power to vote or to direct the vote, shares power to vote or to direct the vote, sole power to dispose or to direct the disposition, or shared power to dispose or to direct the disposition are set forth on rows 7 through 11 and row 13 of, and the footnotes included on, the cover pages of this Amendment No. 1, all of which are incorporated herein by reference.

**(b)**
Item 5 of the Schedule 13D is hereby amended as set forth below.

Calculations of the percentage of shares of ordinary shares beneficially owned assumes that there were 18,285,638 ordinary shares outstanding as of the date of this report, based on information provided by the Issuer. The change in the Reporting Person's percentage beneficial ownership reported in this Amendment No. 1 resulted solely from the increase in the number of outstanding ordinary shares. The Reporting Person has not disposed of or acquired any ordinary shares since the filing of Schedule 13D on March 6, 2025.

The aggregate number and percentage of the ordinary shares beneficially owned by the Reporting Person, the number of shares as to which there is sole power to vote or to direct the vote, shares power to vote or to direct the vote, sole power to dispose or to direct the disposition, or shared power to dispose or to direct the disposition are set forth on rows 7 through 11 and row 13 of, and the footnotes included on, the cover pages of this Amendment No. 1, all of which are incorporated herein by reference.

**(c)**
—

### 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.

**Reporting Person:** LINGTAO KONG

**Signature:** /s/ Lingtao Kong

**Name/Title:** Lingtao Kong

**Date:** 12/01/2025