Ridgetech investor reports 3.2% ownership stake

Lingtao Kong filed Amendment No. 2 reporting his beneficial ownership of Ridgetech Inc. ordinary shares.

Accepted by SEC EDGAR 07/20/2026 - 05:16 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Lingtao Kong filed Amendment No. 2 reporting his beneficial ownership of Ridgetech Inc. ordinary shares. He beneficially owns 114,834 Ordinary Shares, representing 3.2% of the outstanding ordinary shares, and holds sole voting and sole dispositive power over this entire amount.

The position consists of 14,834 Ordinary Shares and 100,000 Series A Preferred Shares, each Series A Preferred Share being convertible into one Ordinary Share under its Statement of Rights. The percentage interest is calculated using 3,629,540 Ordinary Shares outstanding as of July 16, 2026. Following a 1-for-150 reverse share split effective April 7, 2026, Kong held 14,834 Ordinary Shares, and on July 15, 2026 he acquired the 100,000 Series A Preferred Shares.

Key Figures

Beneficial Ownership: 114,834 Ordinary Shares Ownership Percentage: 3.2% Shares Outstanding: 3,629,540 Ordinary Shares +4 more

7 metrics

Beneficial Ownership 114,834 Ordinary Shares Total ordinary shares beneficially owned by Lingtao Kong

Ownership Percentage 3.2% Percent of Ridgetech ordinary shares beneficially owned by Lingtao Kong

Shares Outstanding 3,629,540 Ordinary Shares Ordinary shares outstanding as of July 16, 2026

Series A Preferred Shares 100,000 shares Series A Preferred Shares held, each convertible into one Ordinary Share

Post-Split Ordinary Shares 14,834 Ordinary Shares Ordinary Shares beneficially owned after 1-for-150 reverse split

Reverse Share Split Ratio 1-for-150 Reverse share split effective April 7, 2026

Sole Voting Power 114,834 Ordinary Shares Shares over which Kong has sole voting power

Key Terms

beneficially owned, Series A Preferred Shares, reverse share split, Rule 13d-3(d)(1), +1 more

5 terms

beneficially owned regulatory

"The aggregate number and percentage of the ordinary shares beneficially owned by the Reporting Person"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Series A Preferred Shares financial

"100,000 Series A Preferred Shares, each of which is convertible at the option of the holder"

Series A preferred shares are an early-stage class of ownership sold to investors that gives them special protections and payment priority over regular common stock. Think of them as a safer seat on a bus: if the company earns money or is sold, holders get paid before ordinary shareholders, and they often can convert to common shares later to share upside; that mix of safety and growth potential helps investors manage risk and reward.

reverse share split financial

"Following the Issuer's 1-for-150 reverse share split effective April 7, 2026"

A reverse share split is when a company reduces the number of its shares outstanding by combining multiple shares into one, effectively increasing the price of each share. For investors, this can help improve the company's image or meet stock exchange listing requirements, but it does not change the total value of their investment. It’s similar to turning many small pieces of a puzzle into fewer larger pieces—nothing new is added or lost, just rearranged.

Rule 13d-3(d)(1) regulatory

"In accordance with Rule 13d-3(d)(1), the 100,000 Ordinary Shares issuable upon conversion"

Statement of Rights regulatory

"subject to the terms of the Statement of Rights applicable to such Series A Preferred Shares"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What ownership stake in Ridgetech Inc (RDGT) does Lingtao Kong report in this Schedule 13D/A?

Lingtao Kong reports beneficial ownership of 114,834 Ordinary Shares of Ridgetech Inc, representing 3.2% of the company’s outstanding ordinary shares, based on 3,629,540 ordinary shares outstanding as of July 16, 2026.

How is Lingtao Kong’s 114,834-share position in Ridgetech Inc (RDGT) structured?

The 114,834 beneficially owned shares consist of 14,834 Ordinary Shares and 100,000 Series A Preferred Shares. Each Series A Preferred Share is convertible into one Ordinary Share under the applicable Statement of Rights.

What corporate action by Ridgetech Inc (RDGT) affected Lingtao Kong’s share count?

Ridgetech Inc completed a 1-for-150 reverse share split effective April 7, 2026. After this reverse split, Lingtao Kong beneficially owned 14,834 Ordinary Shares before acquiring the additional Series A Preferred Shares.

When did Lingtao Kong acquire the Series A Preferred Shares of Ridgetech Inc (RDGT)?

Lingtao Kong acquired 100,000 Series A Preferred Shares on July 15, 2026. Each of these preferred shares is convertible, at his option and subject to its terms, into one Ordinary Share of Ridgetech Inc.

What voting and dispositive powers over Ridgetech Inc (RDGT) shares does Lingtao Kong report?

Lingtao Kong reports sole voting power and sole dispositive power over 114,834 Ordinary Shares. He reports no shared voting power and no shared dispositive power over any Ridgetech Inc ordinary shares.

How was the 3.2% beneficial ownership percentage in Ridgetech Inc (RDGT) calculated?

The 3.2% figure assumes 3,629,540 Ordinary Shares outstanding as of July 16, 2026. Under Rule 13d-3(d)(1), the 100,000 Ordinary Shares issuable upon conversion of Kong’s Series A Preferred Shares are deemed outstanding for his percentage calculation.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 2)

Ridgetech Inc.

(Name of Issuer)

Ordinary Shares, par value $0.15 per share

(Title of Class of Securities)

G2124G203

(CUSIP Number)

Lingtao Kong
5/F, Bldg 6, No. 100, 18th Street, Baiyang Sub-dist., Qiantang Dist
Zhejiang Province, F4, 310008
86-571-88219579

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

07/16/2026

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

schemaVersion:

SCHEDULE 13D

CUSIP Number(s): G2124G203

1

Name of reporting person

LINGTAO KONG

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

OO

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

HONG KONG

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 114,834.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 114,834.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

114,834.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

3.2 %

14

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person:

(1) Consists of (i) ordinary shares, par value $0.15 per share (the "Ordinary Shares") held of record by Lingtao Kong, and (ii) Series A preferred shares, par value $0.001 (the "Series A Preferred Shares"), held of record by Lingtao Kong. (2) Each Series A Preferred Share is convertible at the option of the holder at any time into one Ordinary Share, subject to the terms of the Statement of Rights applicable to such Series A Preferred Shares. (3) The percentage calculation is based on an aggregate of 3,629,540 ordinary shares outstanding as of the date of this report, based on information provided by the Issuer.

SCHEDULE 13D

Item 1.	Security and Issuer
(a)	Title of Class of Securities: Ordinary Shares, par value $0.15 per share
(b)	Name of Issuer: Ridgetech Inc.
(c)	Address of Issuer's Principal Executive Offices: 5/F, Bldg 6, No. 100, 18th Street, Baiyang Sub-dist., Qiantang Dist, Hangzhou, CHINA , 310008.
Item 5.	Interest in Securities of the Issuer
(a)	(a)-(b) of Item 5 of the Schedule 13D is hereby amended as set forth below. (a) - (b) Calculations of the percentage of Ordinary Shares beneficially owned assume that there were 3,629,540 Ordinary Shares outstanding as of July 16, 2026, based on information provided by the Issuer. In accordance with Rule 13d-3(d)(1), the 100,000 Ordinary Shares issuable upon conversion of the 100,000 Series A Preferred Shares beneficially owned by the Reporting Person are deemed outstanding for purposes of calculating the Reporting Person's percentage of beneficial ownership. Following the Issuer's 1-for-150 reverse share split effective April 7, 2026, the Reporting Person beneficially owned 14,834 Ordinary Shares. On July 15, 2026, the Reporting Person acquired 100,000 Series A Preferred Shares, each of which is convertible at the option of the holder at any time into one Ordinary Share, subject to the terms of the Statement of Rights applicable to such Series A Preferred Shares. Except for the acquisition of the Series A Preferred Shares, the Reporting Person has not disposed of or acquired any Ordinary Shares since the filing of Amendment No. 1 to Schedule 13D on December 1, 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. 2, all of which are incorporated herein by reference.

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.

LINGTAO KONG

Signature:	/s/ Lingtao Kong
Name/Title:	Lingtao Kong
Date:	07/20/2026