CooTek (CTKYY) CTO Kan Zhang buys 540M Class A shares at tiny price

Rhea-AI Filing Summary

CooTek(Cayman)Inc. director and executive officer Kan Zhang reported a very large open‑market purchase of 540,786,459 Class A ordinary shares of the company. The filing labels this as a direct holding. A footnote explains the actual purchase price was $0.000037 per share, with the reported price rounded to the system’s minimum increment.

In addition to this purchase, the filing lists existing holdings. Indirectly, an entity associated with Zhang holds 246,224,465 Class B ordinary shares, and options giving the right to buy 10,000,000 Class A ordinary shares at an exercise price of $0.0002 per share until January 5, 2030. The positions through Kan’s Global CoolStuff Investment Inc. are reported as indirect ownership.

Insights

Equity ownership analyst

Large insider share purchase at a minimal price, alongside sizable existing positions.

The filing shows CTO and Acting CFO Kan Zhang entering into an open‑market purchase of 540,786,459 Class A ordinary shares. A footnote states the actual price was approximately $0.000037 per share, so the dollar value of the transaction is small despite the high share count.

Beyond this transaction, Zhang reports significant existing holdings. These include direct and indirect stakes in both Class A and Class B ordinary shares and options over 10,000,000 Class A shares at an exercise price of $0.0002 per share that expire on January 5, 2030. The filing suggests a substantial overall equity exposure, though its proportion of total shares outstanding is not indicated.

Insider Trade Summary

4 transactions reported

Net Buy 4 txns

Insider ZHANG KAN

Role CTO and Acting CFO

Bought 540,786,459 shs ($0.00)

Type	Security	Shares	Price	Value
Purchase	Class A ordinary shares	540,786,459	$0.00	--
holding	Options (right to buy)	--	--	--
holding	Class A ordinary shares	--	--	--
holding	Class B ordinary shares	--	--	--

Holdings After Transaction: Class A ordinary shares — 540,786,459 shares (Direct, null); Options (right to buy) — 10,000,000 shares (Indirect, By Kan's Global CoolStuff Investment Inc.); Class B ordinary shares — 246,224,465 shares (Indirect, By Kan's Global CoolStuff Investment Inc.)

Footnotes (1)

1. Actual price is $0.000037 per share, reported at minimum increment permitted by system. Kan's Global CoolStuff Investment Inc. is wholly owned by Kan's Universe Investment Limited, a British Virgin Islands company, which is ultimately owned Kan Zhang.

Form 4 Insider Transactions: What Each Field Means →

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^*

ZHANG KAN

(Last) (First) (Middle)

7F, T3, LANE 360, XINLONG ROAD

MINHANG DISTRICT

(Street)

SHANGHAI 201101

(City) (State) (Zip)

CHINA

(Country)

2. Issuer Name and Ticker or Trading Symbol
CooTek(Cayman)Inc. [ CTKYY ]

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

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CTO and Acting CFO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/19/2026

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
Class A ordinary shares	05/19/2026		P		540,786,459	A	$0(1)	540,786,459	D
Class A ordinary shares								94,285,750	D
Class B ordinary shares								246,224,465	I	By Kan's Global CoolStuff Investment Inc.(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
Options (right to buy)	$0.0002							01/06/2020	01/05/2030	Class A ordinary shares	10,000,000		10,000,000	I	By Kan's Global CoolStuff Investment Inc.(2)

Explanation of Responses:

1. Actual price is $0.000037 per share, reported at minimum increment permitted by system.

2. Kan's Global CoolStuff Investment Inc. is wholly owned by Kan's Universe Investment Limited, a British Virgin Islands company, which is ultimately owned Kan Zhang.

	Karl Kan Zhang	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)