# EDGAR Filing Document

**Accession Number:** 0001803407
**File Stem:** 0001213900-25-054271
**Filing Date:** 2025-6
**Character Count:** 8969
**Document Hash:** c404a0cf9f774bcadfaf463065e09e05
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-25-054271.hdr.sgml**: 20250613

**ACCESSION NUMBER**: 0001213900-25-054271

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

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250613

**DATE AS OF CHANGE**: 20250613

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Ostin Technology Group Co., Ltd.
- **CENTRAL INDEX KEY:** 0001803407
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRONIC COMPONENTS, NEC [3679]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 0930

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-94436
- **FILM NUMBER:** 251046279

**BUSINESS ADDRESS:**
- **STREET 1:** ROOM 101 BUILDING 2 KECHUANG ROAD 1
- **STREET 2:** QIXIA DISTRICT
- **CITY:** NANJIANG JIANGSU
- **STATE:** F4
- **ZIP:** 231300
- **BUSINESS PHONE:** 8602558595234

**MAIL ADDRESS:**
- **STREET 1:** ROOM 101 BUILDING 2 KECHUANG ROAD 1
- **STREET 2:** QIXIA DISTRICT
- **CITY:** NANJIANG JIANGSU
- **STATE:** F4
- **ZIP:** 231300
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Fong Shih-Song
- **CENTRAL INDEX KEY:** 0002070550

**ORGANIZATION NAME:**

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

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 3F., NO. 38, ALY. 9, LN. 10, DAREN ST
- **STREET 2:** ZHONGHE DISTRICT
- **CITY:** NEW TAIPEI CITY
- **PROVINCE COUNTRY:** F5
- **ZIP:** 235084

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

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**(Amendment No. 1)**

**Issuer:** Ostin Technology Group Co., Ltd.

**Title of Class of Securities:** Class A Ordinary Shares, $0.001 par value per share

**CUSIP Number:** G67927114

**Date of Event Which Requires Filing of this Statement:** 06/09/2025

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

- [ ] Rule 13d-1(b)

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

- [ ] Rule 13d-1(d)

---

| 1. | Names of Reporting Persons<br>FONG SHIH-SONG | Names of Reporting Persons<br>FONG SHIH-SONG |
|:---|:---|:---|:---|
| 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>F5 | Citizenship or Place of Organization<br>F5 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>4832595.00 |
| 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>4832595.00 |
| 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>4832595.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>4832595.00 |
| 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>4.50% | Percent of Class Represented by Amount in Row (9)<br>4.50% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

**Comment for Type of Reporting Person:** (1) Represents 4,832,595 Class A Ordinary Shares held by FONG SHIH-SONG.

(2) The percentage of the class of securities is calculated by dividing the number of shares beneficially owned by the reporting person by all of the issuer's issued and outstanding Class A ordinary shares as of May 12, 2025, as provided by the issuer in the Form 6-K filed on May 12, 2025 and the Form 20-F filed on January 17, 2025 by the issuer, 107,430,032 Class A ordinary shares and 200,000 Class B ordinary shares are issued and outstanding.

The shares beneficially owned by the reporting person represents 4.50% of the total outstanding Class A Ordinary Shares. The shares beneficially owned by the reporting person represents 3.79% of the total outstanding voting power. The percentage of voting power is calculated by dividing the voting power beneficially owned by the reporting person by the voting power beneficially owned by all of the issuer's holders of Class A ordinary shares and Class B ordinary shares as a single class as of May 12, 2025. Each holder of the Class A ordinary share is entitled to one vote per share and each holder of the Class B ordinary share is entitled to 100 votes per share.

---

**Item 1(a). Name of Issuer:**
Ostin Technology Group Co., Ltd.

**Item 1(b). Address of Issuer's Principal Executive Offices:**
Building 2, 101, 1 Kechuang Road, Qixia District, Nanjing, Jiangsu Province, China 210046

**Item 2(a). Name of Person Filing:**
FONG SHIH-SONG

**Item 2(b). Address of Principal Business Office:**
3F., NO. 38, ALY. 9, LN. 10, DAREN ST., ZHONGHE DIST., NEW TAIPEI CITY 235084, TAIWAN

**Item 2(c). Citizenship:**
Taiwan

**Item 2(d). Title of Class of Securities:**
Class A Ordinary Shares, $0.001 par value per share

**Item 2(e). CUSIP Number:**
G67927114

**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:**

According to the Form 6-K filed on May 12, 2025 by the issuer, 107,430,032 Class A ordinary shares are issued and outstanding. As of the date hereof, FONG SHIH-SONG holds 4,832,595 Class A Ordinary Shares and no longer owns more than five percent of the Class A ordinary shares. This filing represents an exit filing for the reporting person.

**(b) Percent of class:**

4.50%

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

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

4,832,595 Class A Ordinary Shares

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

0

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

4,832,595 Class A Ordinary Shares

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

0

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

[ ] 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:**

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

### 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.

**FONG SHIH-SONG**

**Date:** 06/13/2025

**By:** /s/ FONG SHIH-SONG

**Name & Title:** FONG SHIH-SONG