C3is Inc. (CISS) CFO files Form 3 with no insider trades

Rhea-AI Filing Summary

C3is Inc. filed an initial insider ownership report for Pyndiah Nina Sarojini, who serves as Chief Financial Officer. This Form 3 does not list any reported transactions or derivative positions and shows no buy, sell, acquisition, or disposition activity at this time.

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^*

Pyndiah Nina Sarojini

(Last) (First) (Middle)

C3IS INC.

331 KIFISSIAS AVENUE ERITHREA

(Street)

ATHENS GREECE 14561

(City) (State) (Zip)

GREECE

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
C3is Inc. [ CISS ]

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)

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

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:

Remarks:

Exhibit 24 - Power of Attorney

No securities are beneficially owned.

	/s/ Nina Pyndiah	03/18/2026
	** 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 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 the C3is Inc. (CISS) Form 3 filing for Pyndiah Nina Sarojini show?

The Form 3 shows that Chief Financial Officer Pyndiah Nina Sarojini has filed an initial insider ownership report. It reports no buy, sell, acquisition, or disposition transactions and no derivative positions in C3is Inc. at this time.

Who is the insider named in the C3is Inc. (CISS) Form 3 filing?

The insider is Pyndiah Nina Sarojini, listed as an officer of C3is Inc. with the title Chief Financial Officer. The filing indicates this role and confirms she is not a director or ten percent owner.

Does the C3is Inc. (CISS) Form 3 report any insider share purchases or sales?

No, the Form 3 reports no insider share purchases or sales. The transaction summary shows zero buy, sell, acquisition, disposition, exercise, gift, tax withholding, or restructuring transactions for the reporting officer in this filing.

Are there any derivative securities reported in the C3is Inc. (CISS) Form 3?

No, the Form 3 indicates no derivative securities for the reporting officer. The derivative summary is empty and derivativeTransactionCount is zero, meaning no options, warrants, or similar instruments are reported in this initial statement.

What is the overall transaction direction in the C3is Inc. (CISS) Form 3?

The overall transaction direction is neutral. The transaction summary shows zero net buy or sell shares and a netBuySellDirection of “neutral,” reflecting that no insider trading activity is reported in this initial ownership filing.