Southport Acquisition Corp. II sponsor holds 7.67M shares

Southport Acquisition Corp. II (PORT) is the issuer in an ownership report listing 7,666,667 Class B ordinary shares held indirectly by Southport Acquisition Sponsor II LLC as of September 30, 2026.

Rhea-AI Filing Summary

Southport Acquisition Corp. II (PORT) is the issuer in an ownership report listing 7,666,667 Class B ordinary shares held indirectly by Southport Acquisition Sponsor II LLC as of September 30, 2026. Up to 1,000,000 of those shares are subject to forfeiture if the underwriters do not exercise their over-allotment option in full. The Class B shares automatically convert one-for-one into Class A ordinary shares at the initial business combination, or may convert earlier at the holder’s option, subject to adjustments. Jeb S. Spencer, the issuer’s CEO and CFO, and Southport Sponsor Management II, LLC each disclaim beneficial ownership except to the extent of any pecuniary interest.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider SPENCER JEB S., SOUTHPORT SPONSOR MANAGEMENT II, LLC

Role CEO and CFO | 10% Owner

Type	Security	Shares	Price	Value
holding	Class B Ordinary Shares F1, F2, F3	--	--	--

Holdings After Transaction: Class B Ordinary Shares — 7,666,667 contracts (Indirect, See Footnotes)

Footnotes (3)

1. F1. As described in the Registration Statement on Form S-1 (File No. 333-298104) of Southport Acquisition Corp. II (the "Issuer") under the heading "Description of Securities--Founder Shares," Class B ordinary shares will automatically convert into Class A ordinary shares at the time of the Issuer's initial business combination, or at any time prior to the Issuer's initial business combination, at the option of the holder, on a one-for-one basis, subject to certain adjustments. The Class B ordinary shares have no expiration date.
2. F2. These shares represent the Class B ordinary shares held by Southport Acquisition Sponsor II LLC (the "Sponsor") acquired pursuant to a subscription agreement by and between the Issuer and the Sponsor. The Class B ordinary shares include up to 1,000,000 shares that are subject to forfeiture in the event the underwriters of the Issuer's initial public offering do not exercise in full their over-allotment option as described in the Issuer's Registration Statement.
3. F3. Represents shares held by the Sponsor. Southport Sponsor Management II, LLC is the managing member of the Sponsor and controls the management of the Sponsor, including the exercise of voting and investment discretion over the securities held by the Sponsor. The managing member of Southport Sponsor Management II, LLC is Jeb Spencer, the issuer's Chairman, Chief Executive Officer and Chief Financial Officer. Southport Sponsor Management II, LLC and Jeb Spencer each disclaims any beneficial ownership of the reported shares other than to the extent of any pecuniary interest they may have therein, directly or indirectly.

Key Figures

Class B ordinary shares held: 7,666,667 shares Shares subject to forfeiture: Up to 1,000,000 shares Conversion ratio: One-for-one

3 metrics

Class B ordinary shares held 7,666,667 shares Indirect holding as of September 30, 2026

Shares subject to forfeiture Up to 1,000,000 shares If the underwriters do not exercise the over-allotment option in full

Conversion ratio One-for-one Class B ordinary shares convert into Class A ordinary shares

Key Terms

initial business combination, over-allotment option, pecuniary interest, beneficial ownership

4 terms

initial business combination financial

"at the time of the Issuer's initial business combination"

An initial business combination is the deal in which a special-purpose acquisition company (SPAC) merges with or acquires an operating business to bring that business onto public markets. Think of the SPAC as an empty shell that raises money from investors, then uses that cash to buy a private company—this transaction turns the private company into a public one and often changes its ownership, valuation, and access to capital, so investors should watch for shifts in risk, future growth prospects, and shareholder rights.

over-allotment option financial

"do not exercise in full their over-allotment option"

An over-allotment option is a special agreement that allows underwriters to sell more shares than initially planned if demand is high. Think of it like a retailer offering extra units of a popular product to meet additional customer interest. This option helps ensure the full sale is completed and can also give investors extra shares if they want more.

pecuniary interest financial

"to the extent of any pecuniary interest they may have"

beneficial ownership financial

"disclaims any beneficial ownership of the reported shares"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

FAQ

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

How many PORT Class B ordinary shares are reported?

Southport Acquisition Sponsor II LLC held 7,666,667 Class B ordinary shares indirectly as of September 30, 2026. Jeb S. Spencer and Southport Sponsor Management II, LLC each disclaim beneficial ownership except to the extent of any pecuniary interest.

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

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Available on EDGAR 10/05/2026 - 08:59 PM Accepted by SEC EDGAR 09/30/2026 - 08:57 PM Learn about SEC filing dates

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

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

SPENCER JEB S.

(Last) (First) (Middle)

C/O SOUTHPORT ACQUISITION CORP. II

8 BOLLING PLACE

(Street)

GREENWICH CONNECTICUT 06830

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
09/30/2026

3. Issuer Name and Ticker or Trading Symbol
Southport Acquisition Corp. II [ PORT ]

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)

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

6. Individual or Joint/Group Filing (Check Applicable Line)

	Form filed by One Reporting Person
X	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
Class B Ordinary Shares(1)	(1)	(1)	Class A Ordinary Shares	7,666,667(2)	(1)	I	See Footnotes(2)(3)

1. Name and Address of Reporting Person^*

SPENCER JEB S.

(Last) (First) (Middle)

C/O SOUTHPORT ACQUISITION CORP. II

8 BOLLING PLACE

(Street)

GREENWICH CONNECTICUT 06830

(City) (State) (Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

SOUTHPORT SPONSOR MANAGEMENT II, LLC

(Last) (First) (Middle)

8 BOLLING PLACE

(Street)

GREENWICH CONNECTICUT 06830

(City) (State) (Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

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

Explanation of Responses:

1. As described in the Registration Statement on Form S-1 (File No. 333-298104) of Southport Acquisition Corp. II (the "Issuer") under the heading "Description of Securities--Founder Shares," Class B ordinary shares will automatically convert into Class A ordinary shares at the time of the Issuer's initial business combination, or at any time prior to the Issuer's initial business combination, at the option of the holder, on a one-for-one basis, subject to certain adjustments. The Class B ordinary shares have no expiration date.

2. These shares represent the Class B ordinary shares held by Southport Acquisition Sponsor II LLC (the "Sponsor") acquired pursuant to a subscription agreement by and between the Issuer and the Sponsor. The Class B ordinary shares include up to 1,000,000 shares that are subject to forfeiture in the event the underwriters of the Issuer's initial public offering do not exercise in full their over-allotment option as described in the Issuer's Registration Statement.

3. Represents shares held by the Sponsor. Southport Sponsor Management II, LLC is the managing member of the Sponsor and controls the management of the Sponsor, including the exercise of voting and investment discretion over the securities held by the Sponsor. The managing member of Southport Sponsor Management II, LLC is Jeb Spencer, the issuer's Chairman, Chief Executive Officer and Chief Financial Officer. Southport Sponsor Management II, LLC and Jeb Spencer each disclaims any beneficial ownership of the reported shares other than to the extent of any pecuniary interest they may have therein, directly or indirectly.

	/s/ Jeb Spencer	09/30/2026
	Southport Sponsor Management II, LLC, By: /s/ Jeb Spencer, Managing Member	09/30/2026
	** 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)