Armada Acquisition (AACIU) director holds 85,000 Class B Ordinary Shares

Rhea-AI Filing Summary

Armada Acquisition Corp. III director Celso L. White reported initial ownership of 85,000 Class B Ordinary Shares. These shares were granted under a Securities Assignment Agreement dated December 15, 2025. The Class B shares have no expiration date and automatically convert into Class A Ordinary Shares at the time of the company’s initial business combination, or earlier at the holder’s option, on a one-for-one basis.

Of the 85,000 Class B shares, 8,500 vested on February 19, 2026, defined as the Closing Date. The remaining 76,500 Class B shares vest in six equal quarterly installments through the 18‑month anniversary of the Closing Date.

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^*

White Celso L.

(Last) (First) (Middle)

C/O ARMADA ACQUISITION CORP. III

1760 MARKET STREET, SUITE 602

(Street)

PHILADELPHIA PA 19103

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
02/17/2026

3. Issuer Name and Ticker or Trading Symbol
Armada Acquisition Corp. III [ AACIU ]

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

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

5. If Amendment, Date of Original Filed (Month/Day/Year)

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
Class B Ordinary Shares	(1)	(1)	Class A Ordinary Shares	85,000(2)	(1)	D

Explanation of Responses:

1. The Class B Ordinary Shares have no expiration date and will automatically convert into Class A Ordinary Shares at the time of the Issuer's initial business combination, or earlier at the option of the holder, on a one-for-one basis.

2. The 85,000 Class B Ordinary Shares were granted pursuant to the Securities Assignment Agreement, dated December 15, 2025, by and between the Reporting Person, the Issuer, and Armada Sponsor III LLC, of which 8,500 Class B Ordinary Shares vested on February 19, 2026 (the "Closing Date") and the remaining 76,500 Class B Ordinary Shares vest in six equal quarterly installments through the 18-month anniversary of the Closing Date.

Remarks:

No securities are beneficially owned.

	/s/ Celso L. White	02/23/2026
	** 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.

FAQ

What does Armada Acquisition Corp. III (AACIU) director Celso L. White report on this Form 3?

Celso L. White reports initial ownership of 85,000 Class B Ordinary Shares of Armada Acquisition Corp. III. These shares were granted under a Securities Assignment Agreement and are subject to a specific vesting schedule and future conversion into Class A Ordinary Shares.

How many Armada Acquisition (AACIU) Class B shares are vested and unvested for Celso L. White?

Out of 85,000 Class B Ordinary Shares, 8,500 shares vested on February 19, 2026, the Closing Date. The remaining 76,500 shares vest in six equal quarterly installments through the 18‑month anniversary of that Closing Date.

How do Armada Acquisition Corp. III (AACIU) Class B shares convert into Class A shares?

The Class B Ordinary Shares have no expiration date and automatically convert into Class A Ordinary Shares at the time of Armada’s initial business combination, or earlier at the holder’s option, on a one-for-one basis according to the filing.

What agreement governs Celso L. White’s 85,000 Class B shares in Armada Acquisition (AACIU)?

The 85,000 Class B Ordinary Shares were granted under a Securities Assignment Agreement dated December 15, 2025, among Celso L. White, Armada Acquisition Corp. III, and Armada Sponsor III LLC, establishing the grant and vesting terms.

Over what period do Celso L. White’s unvested AACIU Class B shares vest?

After 8,500 shares vested on February 19, 2026, the remaining 76,500 Class B shares vest in six equal quarterly installments through the 18‑month anniversary of the Closing Date, creating a structured vesting timeline.