Southport Acquisition Corp. II sponsor buys 500K shares

Southport Acquisition Corp. II (PORT) reports that Southport Acquisition Sponsor II LLC purchased 500,000 Class A ordinary shares on September 30, 2026, at a reported $10.0000 per share under a Private Placement Units Purchase Agreement.

Rhea-AI Filing Summary

Southport Acquisition Corp. II (PORT) reports that Southport Acquisition Sponsor II LLC purchased 500,000 Class A ordinary shares on September 30, 2026, at a reported $10.0000 per share under a Private Placement Units Purchase Agreement. Each unit consisted of one Class A ordinary share and one-half of one warrant; each whole warrant is exercisable to purchase one Class A ordinary share. The sponsor held 500,000 shares after the transaction, and no Rule 10b5-1 plan is reported. Southport Sponsor Management II, LLC controls voting and investment discretion over the sponsor’s securities; it and Jeb S. Spencer, the issuer’s Chairman, Chief Executive Officer and Chief Financial Officer, disclaim beneficial ownership except to the extent of any pecuniary interest.

Insider Trade Summary

Net Buyer: 500,000 shares

Net Buy 1 txn

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

Role CEO and CFO | 10% Owner

Bought 500,000 shs ($5.00M)

Type	Security	Shares	Price	Value
Purchase	Class A ordinary shares F1, F2	500,000	$10.00	$5.00M

Holdings After Transaction: Class A ordinary shares — 500,000 shares (Indirect, See Footnotes)

Footnotes (2)

1. F1. Represents shares underlying the private placement units (each unit consisting of one Class A ordinary share and one-half of one warrant, each whole warrant exercisable to purchase one Class A ordinary share) directly held by Southport Acquisition Sponsor II LLC (the "Sponsor"), and which were acquired pursuant to a Private Placement Units Purchase Agreement by and between the Sponsor and Southport Acquisition Corp. II (the "Issuer"). Does not include previously reported 7,666,667 Class B ordinary shares, which shares will automatically convert into Class A ordinary shares at the time of the Issuer's initial business combination on a one-for-one basis, or at any time prior to the Issuer's initial business combination, at the option of the holder, subject to adjustment as described under the heading "Description of Securities--Founder Shares" in the Issuer's registration statement on Form S-1 (File No. 333-298104).
2. F2. 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 A ordinary shares purchased: 500,000 shares Reported transaction price: $10.0000 per share Class A ordinary shares held after transaction: 500,000 shares +4 more

7 metrics

Class A ordinary shares purchased 500,000 shares Southport Acquisition Sponsor II LLC; September 30, 2026

Reported transaction price $10.0000 per share Purchase on September 30, 2026

Class A ordinary shares held after transaction 500,000 shares Shares held by Southport Acquisition Sponsor II LLC

Class A ordinary shares per private placement unit 1 share Each private placement unit

Warrants per private placement unit one-half warrant Each private placement unit

Class A ordinary shares per whole warrant 1 share Each whole warrant is exercisable to purchase one Class A ordinary share

Previously reported Class B ordinary shares excluded 7,666,667 shares The footnote states these shares automatically convert one-for-one at the initial business combination, or earlier at the holder’s option, subject to adjustment

Key Terms

Private Placement Units Purchase Agreement, warrant, beneficial ownership, pecuniary interest, +1 more

5 terms

Private Placement Units Purchase Agreement financial

"acquired pursuant to a Private Placement Units Purchase Agreement"

warrant financial

"each whole warrant exercisable to purchase one Class A ordinary share"

A warrant is a time-limited financial contract that gives its holder the right to buy a company's shares at a set price before a specified date, like a coupon that lets you purchase stock at a fixed discount for a limited time. It matters to investors because warrants offer leveraged exposure to a stock’s upside and can dilute existing shareholders if exercised, so they affect potential gains and the company’s outstanding share count.

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.

pecuniary interest financial

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

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.

FAQ

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

How many PORT shares did the sponsor buy, and at what price?

Southport Acquisition Sponsor II LLC purchased 500,000 Class A ordinary shares on September 30, 2026, at a reported $10.0000 per share; it held 500,000 shares after the transaction.

What did PORT’s private placement units include?

Each private placement unit consisted of one Class A ordinary share and one-half of one warrant; each whole warrant is exercisable to purchase one Class A ordinary share.

Who controls voting and investment decisions over the PORT sponsor shares?

Southport Sponsor Management II, LLC, the sponsor’s managing member, controls voting and investment discretion over securities held by Southport Acquisition Sponsor II LLC. Jeb S. Spencer is the managing member of Southport Sponsor Management II, LLC; both 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 - 08:26 PM Accepted by SEC EDGAR 10/02/2026 - 04:30 PM Learn about SEC filing dates

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^*

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

5. 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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2026

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

	Form filed by One Reporting Person
X	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	09/30/2026		P		500,000(1)	A	$10	500,000(2)	I	See Footnotes(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

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. Represents shares underlying the private placement units (each unit consisting of one Class A ordinary share and one-half of one warrant, each whole warrant exercisable to purchase one Class A ordinary share) directly held by Southport Acquisition Sponsor II LLC (the "Sponsor"), and which were acquired pursuant to a Private Placement Units Purchase Agreement by and between the Sponsor and Southport Acquisition Corp. II (the "Issuer"). Does not include previously reported 7,666,667 Class B ordinary shares, which shares will automatically convert into Class A ordinary shares at the time of the Issuer's initial business combination on a one-for-one basis, or at any time prior to the Issuer's initial business combination, at the option of the holder, subject to adjustment as described under the heading "Description of Securities--Founder Shares" in the Issuer's registration statement on Form S-1 (File No. 333-298104).

2. 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	10/02/2026
	Southport Sponsor Management II, LLC, By: /s/ Jeb Spencer, Managing Member of Southport Sponsor Management II, LLC	10/02/2026
	** 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)