Adagene (ADAG) director adds 2,000 ADS in open-market buy

Rhea-AI Filing Summary

Adagene Inc. (ADAG) reported that director Do Cuong V purchased American Depositary Shares in the company. On 2026-08-14, the reporting person bought 2,000 ADS in open-market or private transactions at a price of $3.75 per ADS, resulting in direct ownership of 2,000 ADS.

Insider Trade Summary

Net Buyer: 2,000 shares

Net Buy 1 txn

Insider DO CUONG V

Role Director

Bought 2,000 shs ($8K)

Type	Security	Shares	Price	Value
Purchase	American Depositary Shares (ADS) F1	2,000	$3.75	$8K

Holdings After Transaction: American Depositary Shares (ADS) — 2,000 shares (Direct)

Footnotes (1)

1. F1. These shares were purchased in multiple transactions at prices $3.75 per share.

Key Figures

Shares purchased: 2,000 ADS Purchase price: $3.75 per ADS Shares owned after transaction: 2,000 ADS

3 metrics

Shares purchased 2,000 ADS Non-derivative open-market or private purchase on 2026-08-14

Purchase price $3.75 per ADS Price for multiple purchase transactions on 2026-08-14

Shares owned after transaction 2,000 ADS Total direct holdings of Do Cuong V following the reported purchase

Key Terms

American Depositary Shares (ADS), open market or private transaction, non-derivative

3 terms

American Depositary Shares (ADS) financial

"The security title is listed as "American Depositary Shares (ADS)""

American depositary shares (ADS) are a way for investors in the United States to buy shares of foreign companies without dealing with the complexities of international markets. They represent ownership in a foreign company's stock and are traded on U.S. exchanges, making it easier and more convenient for Americans to invest internationally. ADSs allow investors to diversify their portfolios with foreign companies while using familiar trading platforms.

open market or private transaction financial

"Transaction code P is described as "Purchase in open market or private transaction""

non-derivative financial

"The transaction_type is identified as "non-derivative""

FAQ

What insider transaction did ADAG report for director Do Cuong V?

Adagene Inc. reported that director Do Cuong V purchased 2,000 ADS on 2026-08-14 at $3.75 per ADS. The transaction was reported as a direct open-market or private purchase.

How many Adagene (ADAG) ADS does Do Cuong V own after this Form 4 transaction?

Following the reported transaction, Do Cuong V directly owns 2,000 American Depositary Shares of Adagene Inc. The filing shows these 2,000 ADS as the total direct holdings after the purchase.

At what price were the Adagene (ADAG) shares bought in the latest insider trade?

The reported purchase price was $3.75 per ADS. A footnote explains the shares were acquired in multiple transactions, all at prices of $3.75 per share, on 2026-08-14.

Was the recent ADAG insider purchase by Do Cuong V under a Rule 10b5-1 plan?

The filing’s Rule 10b5-1 checkbox is not marked as affirming a trading plan. The footnote only states the shares were purchased in multiple transactions at $3.75 per share, without referencing a trading plan.

What type of security did Do Cuong V buy in Adagene (ADAG)?

Do Cuong V bought American Depositary Shares (ADS) of Adagene Inc. The Form 4 identifies the security title as American Depositary Shares, representing the company’s equity in depositary form.

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/18/2026 - 06:11 PM Accepted by SEC EDGAR 08/18/2026 - 06:11 PM 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^*

DO CUONG V

(Last) (First) (Middle)

4F, BUILDING C14, NO. 218 XINGHU STREET

(Street)

SUZHOU JIANGSU 215123

(City) (State) (Zip)

CHINA

(Country)

2. Issuer Name and Ticker or Trading Symbol
Adagene Inc. [ ADAG ]

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

3. Date of Earliest Transaction (Month/Day/Year)
08/14/2026

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
American Depositary Shares (ADS)	08/14/2026		P		2,000(1)	A	$3.75	2,000	D

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

Explanation of Responses:

1. These shares were purchased in multiple transactions at prices $3.75 per share.

	/s/ Cuong Do	08/18/2026
	** 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)