Research Alliance Corp III (RACC) CEO reports 1.25M sponsor-held Class B shares

Rhea-AI Filing Summary

Research Alliance Corp III director and Chief Executive Officer Matthew Hammond filed a Form 3 to report his initial ownership position. The filing shows indirect ownership of 1,245,269 Class B Ordinary Shares through Research Alliance Holdings III LLC, the sponsor entity. These Class B shares have no expiration date and are convertible into Class A Ordinary Shares on a one-for-one basis in connection with the company’s initial business combination or earlier at the holder’s option, subject to stated anti-dilution adjustments. Hammond may be deemed to have beneficial ownership through his control of the sponsor but disclaims beneficial ownership except to the extent of any pecuniary interest.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Hammond Matthew

Role Chief Executive Officer

Type	Security	Shares	Price	Value
holding	Class B Ordinary Shares	--	--	--

Holdings After Transaction: Class B Ordinary Shares — 1,245,269 shares (Indirect, Research Alliance Holdings III LLC)

Footnotes (1)

1. Class B Ordinary Shares have no expiration date and will automatically convert into Class A Ordinary Shares of the Issuer at the time of the Issuer's initial business combination on a one-for-one basis (subject to adjustment for sub-divisions, share dividends, reorganizations, recapitalizations and the like), or at any time prior thereto at the option of the holder on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights. Mr. Hammond is the sole director of Research Alliance Holdings III LLC (the "Sponsor"). As such, he has voting and investment discretion with respect to the securities held of record by the Sponsor and may be deemed to have beneficial ownership of the securities held directly by the Sponsor. Mr. Hammond disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, if any.

Key Figures

Indirect Class B holdings: 1,245,269 shares Underlying Class A shares: 1,245,269 shares Conversion price: $0.0000 per share

3 metrics

Indirect Class B holdings 1,245,269 shares Class B Ordinary Shares indirectly held via sponsor

Underlying Class A shares 1,245,269 shares Underlying Class A Ordinary Shares on 1-for-1 conversion

Conversion price $0.0000 per share Stated exercise/conversion price for Class B to Class A

Key Terms

Class B Ordinary Shares, Class A Ordinary Shares, beneficial ownership, anti-dilution rights, +1 more

5 terms

Class B Ordinary Shares financial

"Class B Ordinary Shares have no expiration date and will automatically convert into Class A Ordinary Shares"

Class B ordinary shares are a type of ownership stake in a company that typically come with different voting rights or privileges compared to other share classes. For investors, they represent a way to hold part of the company’s value and influence its decisions, often with fewer voting rights than Class A shares. Understanding these shares helps investors assess their level of control and potential returns within a company.

Class A Ordinary Shares financial

"automatically convert into Class A Ordinary Shares of the Issuer at the time of the Issuer's initial business combination"

Class A ordinary shares are a type of ownership stake in a company that typically grants voting rights to shareholders, allowing them to have a say in important company decisions. They often come with priority in receiving dividends or profits, making them attractive to investors seeking influence and potential income. These shares help distinguish different levels of ownership and rights within a company's stock structure.

beneficial ownership financial

"may be deemed to have beneficial ownership of the securities held directly by the Sponsor"

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.

anti-dilution rights financial

"subject to adjustment pursuant to certain anti-dilution rights"

pecuniary interest financial

"disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein"

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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^*

Hammond Matthew

(Last) (First) (Middle)

C/O RESEARCH ALLIANCE CORPORATION III

600 FIFTH AVENUE, 23RD FLOOR

(Street)

NEW YORK NEW YORK 10020

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
05/19/2026

3. Issuer Name and Ticker or Trading Symbol
Research Alliance Corp III [ RACC ]

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)
	Chief Executive Officer

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	1,245,269	(1)	I	Research Alliance Holdings III LLC(2)

Explanation of Responses:

1. Class B Ordinary Shares have no expiration date and will automatically convert into Class A Ordinary Shares of the Issuer at the time of the Issuer's initial business combination on a one-for-one basis (subject to adjustment for sub-divisions, share dividends, reorganizations, recapitalizations and the like), or at any time prior thereto at the option of the holder on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights.

2. Mr. Hammond is the sole director of Research Alliance Holdings III LLC (the "Sponsor"). As such, he has voting and investment discretion with respect to the securities held of record by the Sponsor and may be deemed to have beneficial ownership of the securities held directly by the Sponsor. Mr. Hammond disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, if any.

	/s/ Henry Stusnick, Attorney-in-Fact	05/19/2026
	** 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)