Peng Ou reports 2.83M Sunlands Technology Group (STG) shares on Form 3

Rhea-AI Filing Summary

Sunlands Technology Group director and major shareholder Peng Ou filed an initial Form 3 reporting beneficial ownership in the company. The filing shows direct ownership of 2,833,024 shares of common stock, reflecting Ou’s status as both a director and a ten percent owner of Sunlands Technology Group.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Peng Ou

Role Director, 10% Owner

Type	Security	Shares	Price	Value
holding	Common stock	--	--	--

Holdings After Transaction: Common stock — 2,833,024 shares (Direct)

Footnotes (1)

Key Figures

Common shares owned: 2,833,024 shares

1 metrics

Common shares owned 2,833,024 shares Total shares following holdings entry in Form 3

Key Terms

Form 3, ten percent owner, beneficial ownership, common stock

4 terms

Form 3 regulatory

"initial Form 3 reporting beneficial ownership in the company"

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

ten percent owner regulatory

"identified as a ten percent owner of Sunlands Technology Group"

beneficial ownership financial

"initial Form 3 reporting beneficial ownership in the company"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

common stock financial

"direct ownership of 2,833,024 shares of common stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Understanding Insider Trading Forms →

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0104
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1. Name and Address of Reporting Person^*

Peng Ou

(Last) (First) (Middle)

BUILDING 6, CHAOLAI SCIENCE PARK

NO. 36 CHUANGYUAN ROAD

(Street)

BEIJING CHINA 100012

(City) (State) (Zip)

CHINA

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
04/01/2026

3. Issuer Name and Ticker or Trading Symbol
Sunlands Technology Group [ STG ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common stock	2,833,024	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	/s/ Peng Ou	04/01/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

FAQ

What does Peng Ou’s Form 3 filing for Sunlands Technology Group (STG) show?

The Form 3 shows that Peng Ou is both a director and a ten percent owner of Sunlands Technology Group, with 2,833,024 shares of common stock reported as directly owned in this initial statement of beneficial ownership.

How many Sunlands Technology Group (STG) shares does Peng Ou report owning?

Peng Ou reports direct ownership of 2,833,024 shares of common stock. This figure appears as the total shares following the reported holdings entry in the Form 3, indicating his beneficial ownership position in Sunlands Technology Group at the time of the filing.

Is Peng Ou a major shareholder of Sunlands Technology Group (STG)?

Yes. The Form 3 identifies Peng Ou as a ten percent owner of Sunlands Technology Group and also a director. His reported beneficial ownership of 2,833,024 common shares supports his classification as a major shareholder under SEC reporting rules.

Does Peng Ou’s Form 3 for Sunlands Technology Group (STG) show any recent stock transactions?

No specific buys or sells are reported. The entry is classified as a holding with an unknown transaction code, presenting 2,833,024 common shares as total shares following the reported position, typical for an initial statement of beneficial ownership.

What type of security does Peng Ou hold in Sunlands Technology Group (STG)?

The Form 3 states that Peng Ou’s reported position consists of common stock of Sunlands Technology Group. All 2,833,024 shares are listed under this security title and are shown as directly owned by the reporting person in the filing.