Cayson Acquisition amends Schedule 13G/A reporting 0% ownership

Cayson Acquisition Corp. files an amended Schedule 13G/A reporting zero beneficial ownership.

Accepted by SEC EDGAR 05/15/2026 - 04:08 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Cayson Acquisition Corp. files an amended Schedule 13G/A reporting zero beneficial ownership. The amendment lists Antonio Ruiz-Gimenez and Kerry Propper as reporting persons and states each holds 0 shares and 0.0% of the outstanding Ordinary Shares, par value $0.0001 per share. The filing includes a joint filing statement and signatures dated 05/15/2026.

Key Figures

Form: Schedule 13G/A Shares held: 0 shares Percent of class: 0.0% +3 more

6 metrics

Form Schedule 13G/A Amendment No. 1 for Cayson Acquisition Corp.

Shares held 0 shares Antonio Ruiz-Gimenez and Kerry Propper

Percent of class 0.0% Each reporting person

CUSIP G1993W109 Ordinary Shares, par value $0.0001

Signature date 05/15/2026 Signatures by reporting persons

Reporting persons' address 1 Pennsylvania Plaza, Suite 4810, New York, NY 10119 Filing contact address

Key Terms

Schedule 13G/A, beneficially owned, joint filing statement, pecuniary interest

4 terms

Schedule 13G/A regulatory

"Amendment No. 1) Cayson Acquisition Corp. Ordinary Shares"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

beneficially owned regulatory

"Amount beneficially owned: Antonio Ruiz-Gimenez - 0* Kerry Propper - 0*"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

joint filing statement regulatory

"Exhibit I - JOINT FILING STATEMENT"

pecuniary interest financial

"Each of the reporting persons disclaims beneficial ownership ... except to the extent of each of their pecuniary interest"

FAQ

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

What does the Cayson Acquisition Corp. (CAPN) Schedule 13G/A say about ownership?

Both reporting persons state zero beneficial ownership. The amendment lists Antonio Ruiz-Gimenez and Kerry Propper with 0 shares and 0.0% ownership as of the filing, with a joint filing statement and dated signatures.

Who are the reporting persons on the CAPN Schedule 13G/A amendment?

The reporting persons are Antonio Ruiz-Gimenez and Kerry Propper. Their addresses are shown at 1 Pennsylvania Plaza, Suite 4810, New York, NY 10119, and citizenship is listed as Spain and United States, respectively.

Does the filing disclose any voting or dispositive power for the reporting persons?

No voting or dispositive power is reported. The form shows sole and shared voting and dispositive power of 0 for both reporting persons and includes a disclaimer disavowing beneficial ownership except to any pecuniary interest.

What is the security and CUSIP referenced in the Schedule 13G/A for CAPN?

The security is Ordinary Shares, par value $0.0001 per share. The CUSIP shown in the filing is G1993W109, tied to the reported ownership statements in the amendment.

When were the signatures on the amendment dated?

Both reporting persons signed on 05/15/2026. The filing includes electronic signatures by Kerry Propper and Antonio Ruiz-Gimenez and an Exhibit I joint filing statement.

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

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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Cayson Acquisition Corp.

(Name of Issuer)

Ordinary Shares, par value $0.0001 per share

(Title of Class of Securities)

G1993W109

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): G1993W109

1

Names of Reporting Persons

Kerry Propper

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

0.0 %

12

Type of Reporting Person (See Instructions)

HC, IN

Comment for Type of Reporting Person: Please see note in Item 4(a).

SCHEDULE 13G

CUSIP Number(s): G1993W109

1

Names of Reporting Persons

Antonio Ruiz-Gimenez

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

SPAIN

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

0.0 %

12

Type of Reporting Person (See Instructions)

HC, IN

Comment for Type of Reporting Person: Please see note in Item 4(a).

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Cayson Acquisition Corp.
(b)	Address of issuer's principal executive offices: 205 W 37th St New York, New York 10018
Item 2.
(a)	Name of person filing: Antonio Ruiz-Gimenez* Kerry Propper*
(b)	Address or principal business office or, if none, residence: 1 Pennsylvania Plaza, Suite 4810 New York, New York 10119
(c)	Citizenship: Antonio Ruiz-Gimenez - Spain Kerry Propper - United States
(d)	Title of class of securities: Ordinary Shares, par value $0.0001 per share
(e)	CUSIP No.: G1993W109
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: Antonio Ruiz-Gimenez - 0* Kerry Propper - 0* *This report shall not be deemed an admission that any of the reporting persons or any other person is the beneficial owner of the securities reported herein, or on previous filings, for purposes of Section 13 of the Securities Exchange Act of 1934, as amended, or for any other purpose. Each of the reporting persons disclaims beneficial ownership of the Shares reported herein (or previously reported herein) except to the extent of each of their pecuniary interest, if any, therein.
(b)	Percent of class: Antonio Ruiz-Gimenez - 0.0% Kerry Propper - 0.0%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: Antonio Ruiz-Gimenez - 0 Kerry Propper - 0
	(ii) Shared power to vote or to direct the vote: Antonio Ruiz-Gimenez - 0* Kerry Propper - 0*
	(iii) Sole power to dispose or to direct the disposition of: Antonio Ruiz-Gimenez - 0 Kerry Propper - 0
	(iv) Shared power to dispose or to direct the disposition of: Antonio Ruiz-Gimenez - 0* Kerry Propper - 0*
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Kerry Propper

Signature:	/s/ Kerry Propper
Name/Title:	Individually
Date:	05/15/2026

Antonio Ruiz-Gimenez

Signature:	/s/ Antonio Ruiz-Gimenez
Name/Title:	Individually
Date:	05/15/2026

Exhibit Information

Exhibit I - JOINT FILING STATEMENT