Zipser Thomas at Clearthink 1 (NASDAQ: CTAAU) files initial Form 3

Rhea-AI Filing Summary

Clearthink 1 Acquisition Corp. director and officer Zipser Thomas filed an initial statement of beneficial ownership of securities. The Form 3 identifies him as a director and as the company’s CFO, Treasurer and Secretary. The filing does not report any insider buy or sell transactions.

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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

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1. Name and Address of Reporting Person^*

Zipser Thomas

(Last) (First) (Middle)

C/O CLEARTHINK 1 ACQUISITION CORP.

150 E. PALMETTO PARK ROAD, SUITE 202

(Street)

BOCA RATON, FL 33432

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
02/25/2026

3. Issuer Name and Ticker or Trading Symbol
Clearthink 1 Acquisition Corp. [ CTAA ]

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

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CFO, Treasurer and Secretary

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

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)

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:

No securities are beneficially owned.

	/s/ Thomas Zipser	03/06/2026
	** 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.

FAQ

What does the Clearthink 1 (CTAAU) Form 3 filing by Zipser Thomas represent?

The Form 3 for Clearthink 1 (CTAAU) is an initial statement of beneficial ownership for Zipser Thomas. It formally records his status as a director and as CFO, Treasurer and Secretary, without reporting any insider buy or sell transactions.

What roles does Zipser Thomas hold at Clearthink 1 Acquisition Corp. (CTAAU)?

Zipser Thomas is reported as both a director and an officer of Clearthink 1 Acquisition Corp., serving specifically as CFO, Treasurer and Secretary. These roles indicate senior responsibility over the company’s financial reporting, treasury activities and corporate records.

Does the Clearthink 1 (CTAAU) Form 3 show any insider stock transactions?

No insider stock transactions are shown in this Form 3 for Clearthink 1 (CTAAU). The structured data lists zero buy, sell, acquire, or dispose transactions, indicating the filing is purely an initial ownership statement, not a record of trades.

Is Zipser Thomas a 10% owner of Clearthink 1 Acquisition Corp. (CTAAU)?

The Form 3 data flags that Zipser Thomas is not a ten percent owner of Clearthink 1 Acquisition Corp. It instead highlights his status as a director and as CFO, Treasurer and Secretary, without classifying him as a major equity holder.

Why is a Form 3 important for Clearthink 1 (CTAAU) investors?

Form 3 filings help investors identify company insiders who must later report trades. For Clearthink 1 (CTAAU), this Form 3 confirms that Zipser Thomas holds key leadership roles and is now subject to ongoing insider transaction reporting requirements.