Flag Ship 10% holder sells 85K shares at $11.23

Flag Ship Acquisition Corp (FSHP) reported that Mizuho Securities USA LLC, a ten percent owner, executed a sale of 85,000 shares of Common Stock on 2026-08-17 in an open-market or private transaction at $11.23 per share.

Rhea-AI Filing Summary

Flag Ship Acquisition Corp (FSHP) reported that Mizuho Securities USA LLC, a ten percent owner, executed a sale of 85,000 shares of Common Stock on 2026-08-17 in an open-market or private transaction at $11.23 per share. Following this transaction, the reporting holder directly owns 315,000 shares of FSHP common stock.

Insider Trade Summary

Net Seller: 85,000 shares

Net Sell 1 txn

Insider MIZUHO SECURITIES USA LLC

Role 10% Owner

Sold 85,000 shs ($955K)

Type	Security	Shares	Price	Value
Sale	Common Stock	85,000	$11.23	$955K

Holdings After Transaction: Common Stock — 315,000 shares (Direct)

Key Figures

Shares sold: 85,000 shares Sale price per share: $11.23 per share Shares owned after transaction: 315,000 shares +1 more

4 metrics

Shares sold 85,000 shares Common Stock sale reported on 2026-08-17

Sale price per share $11.23 per share Per-share price for the 85,000-share Common Stock sale

Shares owned after transaction 315,000 shares Total Common Stock directly held by reporting person after sale

Net shares sold 85,000 shares Net sell direction across all reported transactions in this Form 4

Key Terms

ten percent owner, Sale in open market or private transaction, Section 16

3 terms

ten percent owner regulatory

"MIZUHO SECURITIES USA LLC is marked as a ten percent owner"

Sale in open market or private transaction regulatory

"transaction_code_description: Sale in open market or private transaction"

Section 16 regulatory

"ten percent owner subject to Section 16 reporting requirements"

Section 16 is a U.S. securities law rule that governs the trading and disclosure obligations of company insiders — typically officers, directors and large shareholders — to promote transparency and deter unfair profit-taking. It requires insiders to publicly report their stock trades and allows companies or the issuer to reclaim quick, short-term profits from certain insider trades, like a scoreboard and a refund policy that help investors see and limit possible insider advantage.

FAQ

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

What insider transaction did FSHP report involving Mizuho Securities USA LLC?

Flag Ship Acquisition Corp reported that Mizuho Securities USA LLC sold 85,000 FSHP common shares on 2026-08-17. The transaction was coded as a sale in open market or private transaction under Form 4 reporting rules.

At what price were the 85,000 FSHP shares sold by Mizuho Securities USA LLC?

The 85,000 FSHP common shares were sold at an average price of $11.23 per share. This per-share price is explicitly identified as a per-share transaction price for the reported Form 4 sale.

How many FSHP shares does Mizuho Securities USA LLC hold after the reported sale?

After the sale, Mizuho Securities USA LLC directly holds 315,000 shares of FSHP common stock. This post-transaction figure is reported as the total shares following the transaction on the Form 4.

What is the role of Mizuho Securities USA LLC in relation to FSHP?

Mizuho Securities USA LLC is identified as a ten percent owner of Flag Ship Acquisition Corp. It is not listed as a director or officer, but as a significant shareholder subject to Section 16 reporting requirements.

Was the FSHP insider sale by Mizuho under a Rule 10b5-1 trading plan?

The filing shows the Rule 10b5-1 checkbox as not affirmed (false). There is no indication in the structured data that this 85,000-share sale was executed pursuant to a Rule 10b5-1 trading plan.

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

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Available on EDGAR 08/18/2026 - 12:35 PM Accepted by SEC EDGAR 08/18/2026 - 12:34 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

X

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^*

MIZUHO SECURITIES USA LLC

(Last) (First) (Middle)

1271 AVENUE OF THE AMERICAS

FLOORS - 2,3,4,18,19

(Street)

NEW YORK NEW YORK 10020

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Flag Ship Acquisition Corp [ FSHP ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/14/2026

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

X	Form filed by One Reporting Person
	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
Common Stock	08/17/2026		S		85,000	D	$11.23	315,000	D

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

Explanation of Responses:

	Jing Jing Lin	08/18/2026
	** 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 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)