Weibo director exercises 6,250 ADS from awards

Weibo Corp director Pehong Chen reported routine equity award activity.

Rhea-AI Filing Summary

Weibo Corp director Pehong Chen reported routine equity award activity. He exercised vested restricted shares representing 6,250 ADS, converting them into Class A ordinary shares at an exercise price of $0.00 per share.

After the transaction, Chen holds 31,250 ADS directly and 141,376 ADS indirectly through the Chen Family Trust, which was established for the benefit of Chen and his family. The filing shows no open-market purchases or sales, only the vesting and conversion of previously granted restricted shares.

Insider Trade Summary

6,250 shares exercised/converted

Exercise 3 txns

Insider CHEN PEHONG

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Share	6,250	$0.00	$0.00
Exercise	ADS	6,250	$0.00	$0.00
holding	ADS	--	--	--

Holdings After Transaction: Restricted Share — 0 contracts (Direct); ADS — 31,250 shares (Direct); ADS — 141,376 shares (Indirect, Held by Trust)

Footnotes (5)

1. F1. Each American depositary share represents one Class A ordinary share.
2. F2. The shares are held by Chen Family Trust that is established by Mr. Pehong Chen (as the settlor) for the benefit of Mr. Pehong Chen and his family, with the trustee being with Pehong Chen and Adele W Chi Trustees.
3. F3. Represents restricted shares granted to the reporting person pursuant to the issuer's share incentive plans. Each restricted share represents the contingent right to receive one (1) Class A ordinary share of issuer upon vesting.
4. F4. The restricted shares vested on May 16, 2026.
5. F5. The restricted shares do not have an expiration date.

Key Figures

ADS acquired via vesting: 6,250 ADS Direct ADS holdings after transaction: 31,250 ADS Indirect ADS holdings in trust: 141,376 ADS +2 more

5 metrics

ADS acquired via vesting 6,250 ADS Restricted shares exercised/converted on May 16, 2026

Direct ADS holdings after transaction 31,250 ADS Total ADS directly owned following exercise

Indirect ADS holdings in trust 141,376 ADS Held by Chen Family Trust for Chen and family

Exercise price of restricted shares $0.00 per share Conversion of restricted shares to Class A ordinary shares

Restricted shares converted 6,250 shares Derivative transaction (code M) in Restricted Share line

Key Terms

American depositary share, restricted shares, share incentive plans, Class A ordinary share, +2 more

6 terms

American depositary share financial

"Each American depositary share represents one Class A ordinary share."

An American Depositary Share (ADS) is a U.S.-listed certificate that represents a specified number of shares in a foreign company, held by a custodian bank; it works like a receipt that allows U.S. investors to buy and trade foreign equity on American exchanges without dealing with another country’s markets. Investors care because ADSs make foreign stocks easier to access, improve liquidity and settlement in dollars, and can affect dividend payments, voting rights and regulatory oversight compared with buying the underlying foreign shares directly.

restricted shares financial

"Represents restricted shares granted to the reporting person pursuant to the issuer's share incentive plans."

Restricted shares are company stock that cannot be sold or transferred immediately because they are subject to legal or contractual limits, such as a required holding period or performance conditions. They matter to investors because these locked-up shares can affect a company’s available stock for trading, future dilution, and insider incentives—imagine a gift that can’t be cashed until certain conditions are met, which changes when and how much supply can suddenly enter the market.

share incentive plans financial

"Represents restricted shares granted to the reporting person pursuant to the issuer's share incentive plans."

Class A ordinary share financial

"Each restricted share represents the contingent right to receive one (1) Class A ordinary share of issuer upon vesting."

A Class A ordinary share is a type of common stock a company issues that carries a specific set of rights—most often particular voting power, dividend terms, or transfer rules—distinct from other share classes. For investors it matters because those rights affect control over company decisions, how income is paid out, and how easy shares are to buy or sell; think of it like a tiered ticket that gives different access and influence at the same event.

Chen Family Trust financial

"The shares are held by Chen Family Trust that is established by Mr. Pehong Chen."

settlor financial

"Chen Family Trust that is established by Mr. Pehong Chen (as the settlor) for the benefit of Mr. Pehong Chen and his family."

FAQ

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

What insider activity did Weibo (WB) director Pehong Chen report?

Director Pehong Chen reported the vesting and exercise of restricted shares into 6,250 ADS. These awards were granted under Weibo’s share incentive plans and converted into Class A ordinary shares without any open-market buying or selling.

How many Weibo (WB) ADS does Pehong Chen hold after this Form 4?

After the transactions, Pehong Chen holds 31,250 ADS directly and 141,376 ADS indirectly through the Chen Family Trust. These figures reflect his updated ownership position following the vesting and conversion of restricted shares.

Were the Weibo (WB) transactions open-market buys or sells?

No open-market buys or sells were reported. The Form 4 shows a derivative exercise (code M), where previously granted restricted shares vested and converted into 6,250 ADS at an exercise price of $0.00 per share under share incentive plans.

What are the Weibo (WB) restricted shares mentioned in the filing?

The restricted shares are equity awards granted under Weibo’s share incentive plans. Each restricted share represents a contingent right to receive one Class A ordinary share upon vesting, which in this case converted into 6,250 ADS on the vesting date.

How are Weibo (WB) ADS related to Class A ordinary shares?

Each American depositary share (ADS) represents one Class A ordinary share of Weibo Corp. In this filing, the vested restricted shares converted into underlying Class A ordinary shares, which are reflected as ADS for trading and reporting purposes.

What is the Chen Family Trust’s role in Weibo (WB) share ownership?

The Chen Family Trust holds 141,376 ADS for the benefit of Pehong Chen and his family. Chen established the trust as settlor, and the trustees are Pehong Chen and Adele W Chi Trustees, providing indirect ownership of Weibo ADS through the trust.

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

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Accepted by SEC EDGAR 05/19/2026 - 06:28 AM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

CHEN PEHONG

(Last) (First) (Middle)

8/F, QIHAO PLAZA, NO. 8

XINYUAN S. ROAD CHAOYANG DISTRICT

(Street)

BEIJING F4 100027

(City) (State) (Zip)

CHINA

(Country)

2. Issuer Name and Ticker or Trading Symbol
WEIBO Corp [ WB ]

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

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

2a. Foreign Trading Symbol
[[HKEX: 9898]]

3. Date of Earliest Transaction (Month/Day/Year)
05/16/2026

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

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

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

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
ADS(1)	05/16/2026		M		6,250	A	$0	31,250	D
ADS(1)								141,376	I	Held by Trust(2)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Share	(3)	05/16/2026		M			6,250	(4)	(5)	Class A Ordinary Share, par value US$ 0.00025	6,250	$0	0	D

Explanation of Responses:

1. Each American depositary share represents one Class A ordinary share.

2. The shares are held by Chen Family Trust that is established by Mr. Pehong Chen (as the settlor) for the benefit of Mr. Pehong Chen and his family, with the trustee being with Pehong Chen and Adele W Chi Trustees.

3. Represents restricted shares granted to the reporting person pursuant to the issuer's share incentive plans. Each restricted share represents the contingent right to receive one (1) Class A ordinary share of issuer upon vesting.

4. The restricted shares vested on May 16, 2026.

5. The restricted shares do not have an expiration date.

	/s/ Chen Pehong	05/19/2026
	** 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 4 (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 4: SEC 1474 (03-26)