Research Alliance Corporation III (RACC) gets 8.4% passive stake filing by ADAR1 Capital

Rhea-AI Filing Summary

Research Alliance Corporation III received a Schedule 13G filing from ADAR1 Capital Management, LLC and its sole manager, Daniel Schneeberger, reporting a passive ownership stake in the company’s Class A Ordinary Shares. The reporting persons beneficially own 650,000 Class A Ordinary Shares through private investment funds managed by ADAR1 Capital Management, with shared voting and dispositive power over these shares and no sole voting or dispositive power. This position represents 8.4% of the 7,775,000 Class A Ordinary Shares outstanding as of June 30, 2026, based on the issuer’s Form 10-Q. ADAR1 Capital Management is reported as an investment adviser, and Schneeberger files as a control person with indirect beneficial ownership of the same shares.

Key Figures

Shares beneficially owned: 650,000 Class A Ordinary Shares Ownership percentage: 8.4% Shares outstanding: 7,775,000 Class A Ordinary Shares +2 more

5 metrics

Shares beneficially owned 650,000 Class A Ordinary Shares Beneficially owned by ADAR1 Capital-managed funds and attributed to both reporting persons

Ownership percentage 8.4% Percent of Class A Ordinary Shares beneficially owned by each reporting person

Shares outstanding 7,775,000 Class A Ordinary Shares Shares outstanding as of June 30, 2026, used to calculate ownership percentage

Shared voting power 650,000 shares Number of Class A shares over which each reporting person has shared voting power

Shared dispositive power 650,000 shares Number of Class A shares over which each reporting person has shared dispositive power

Key Terms

beneficially owned, shared voting power, shared dispositive power, control person, +2 more

6 terms

beneficially owned financial

"The amounts reported in boxes 6, 8, and 9 represent 650,000 shares... may be deemed to be indirectly beneficially owned"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

shared voting power financial

"6 | Shared Voting Power 650,000.00 7 | Sole Dispositive Power 0.00 8 | Shared Dispositive Power 650,000.00"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

shared dispositive power financial

"6 | Shared Voting Power 650,000.00 7 | Sole Dispositive Power 0.00 8 | Shared Dispositive Power 650,000.00"

control person financial

"Mr. Schneeberger is filing this as a control person in respect of shares beneficially owned"

A control person is an individual or entity that can significantly influence a company’s decisions and direction through ownership, voting power, or contractual rights—think of them as the captain who can steer the ship. Investors care because a control person’s choices affect corporate strategy, board appointments, and transactions that can raise or lower a stock’s value, and they often carry additional legal responsibilities and disclosure requirements to protect other shareholders.

investment adviser financial

"ADAR1 Capital Management, an investment adviser as described in SS 240.13d-1(b)(1)(ii)(E)"

An investment adviser is a person or firm that professionally manages money and gives recommendations about buying, selling, or holding investments. Like a financial coach or guide, they have a legal duty to act in a client's best financial interest, so their advice, fees and potential conflicts can directly affect returns and risk — making their role important for investors who want informed, accountable help with portfolios.

Schedule 13G regulatory

"This Schedule is being filed on behalf of each of the following persons"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

FAQ

What stake in Research Alliance Corporation III (RACC) does ADAR1 Capital Management report?

ADAR1 Capital Management reports beneficial ownership of 650,000 Class A Ordinary Shares of Research Alliance Corporation III. These shares are held by private investment funds it manages and represent a significant passive position in the company.

What percentage of RACC’s Class A shares is owned according to this Schedule 13G?

The filing reports ownership of 8.4% of the Class A Ordinary Shares of Research Alliance Corporation III. This percentage is calculated using 7,775,000 shares outstanding as of June 30, 2026, as disclosed in the company’s Form 10-Q.

Who are the reporting persons in the RACC Schedule 13G filing?

The reporting persons are ADAR1 Capital Management, LLC and Daniel Schneeberger. ADAR1 is a Texas limited liability company investment adviser, and Schneeberger, a Swiss citizen, is its sole manager and files as a control person with indirect beneficial ownership.

What voting and dispositive powers over RACC shares are reported by ADAR1 Capital Management?

ADAR1 Capital Management reports 0 shares with sole voting or dispositive power and 650,000 shares with shared voting and shared dispositive power. These powers relate to Class A Ordinary Shares held by private investment funds it manages.

How is Daniel Schneeberger’s interest in RACC shares characterized in the Schedule 13G?

Daniel Schneeberger is reported as indirectly beneficially owning 650,000 Class A Ordinary Shares of RACC. His interest arises as the sole manager of ADAR1 Capital Management, LLC, which manages the private investment funds holding the shares.

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Available on EDGAR 08/14/2026 - 09:32 PM Accepted by SEC EDGAR 08/14/2026 - 09:31 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Research Alliance Corporation III

(Name of Issuer)

Class A Ordinary Shares, par value $0.0001 per share

(Title of Class of Securities)

G75226103

(CUSIP Number)

06/30/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): G75226103

1

Names of Reporting Persons

ADAR1 Capital Management, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

TEXAS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 650,000.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 650,000.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

650,000.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

8.4 %

12

Type of Reporting Person (See Instructions)

IA, OO

Comment for Type of Reporting Person: The amounts reported in boxes 6, 8, and 9 represent 650,000 shares of Class A ordinary shares, par value $0.0001 per share ("Class A Ordinary Shares"), of Research Alliance Corporation III (the "Issuer") owned directly by private investment funds managed by ADAR1 Capital Management, LLC. Such securities may be deemed to be indirectly beneficially owned by ADAR1 Capital Management, LLC. The percentage in box 11 is based on 7,775,000 Class A Ordinary Shares outstanding as of June 30, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the Securities and Exchange Commission on August 12, 2026.

SCHEDULE 13G

CUSIP Number(s): G75226103

1

Names of Reporting Persons

Daniel Schneeberger

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

SWITZERLAND

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 650,000.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 650,000.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

650,000.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

8.4 %

12

Type of Reporting Person (See Instructions)

HC, IN

Comment for Type of Reporting Person: The amounts reported in boxes 6, 8, and 9 represent 650,000 shares of Class A ordinary shares, par value $0.0001 per share ("Class A Ordinary Shares"), of Research Alliance Corporation III (the "Issuer") owned directly by private investment funds managed by ADAR1 Capital Management, LLC. Such securities may be deemed to be indirectly beneficially owned by Daniel Schneeberger, the sole manager of ADAR1 Capital Management, LLC. The percentage in box 11 is based on 7,775,000 Class A Ordinary Shares outstanding as of June 30, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the Securities and Exchange Commission on August 12, 2026.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Research Alliance Corporation III
(b)	Address of issuer's principal executive offices: 600 Fifth Avenue, 23rd Floor, New York, NY 10020
Item 2.
(a)	Name of person filing: This Schedule is being filed on behalf of each of the following persons (each, a "Reporting Person" and collectively, the "Reporting Persons"): (i) ADAR1 Capital Management, LLC ("ADAR1 Capital Management"); and (ii) Daniel Schneeberger ("Mr. Schneeberger").
(b)	Address or principal business office or, if none, residence: The address of the principal business office of each of the Reporting Persons is 3503 Wild Cherry Drive, Building 9, Austin, Texas 78738.
(c)	Citizenship: (i) ADAR1 Capital Management is a Texas limited liability company; and (ii) Mr. Schneeberger is a citizen of Switzerland.
(d)	Title of class of securities: Class A Ordinary Shares, par value $0.0001 per share
(e)	CUSIP Number(s): G75226103
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: The information contained on the cover pages of this Schedule 13G is incorporated herein by reference.
(b)	Percent of class: The information contained on the cover pages of this Schedule 13G is incorporated herein by reference.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: The information contained on the cover pages of this Schedule 13G is incorporated herein by reference.
	(ii) Shared power to vote or to direct the vote: The information contained on the cover pages of this Schedule 13G is incorporated herein by reference.
	(iii) Sole power to dispose or to direct the disposition of: The information contained on the cover pages of this Schedule 13G is incorporated herein by reference.
	(iv) Shared power to dispose or to direct the disposition of: The information contained on the cover pages of this Schedule 13G is incorporated herein by reference.
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. Mr. Schneeberger is filing this Schedule 13G as a control person in respect of shares beneficially owned by ADAR1 Capital Management, an investment adviser as described in SS 240.13d-1(b)(1)(ii)(E).
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

ADAR1 Capital Management, LLC

Signature:	/s/ Daniel Schneeberger
Name/Title:	Daniel Schneeberger, Manager
Date:	08/14/2026

Daniel Schneeberger

Signature:	/s/ Daniel Schneeberger
Name/Title:	Daniel Schneeberger, in his individual capacity
Date:	08/14/2026

Exhibit Information

Exhibit A: Joint Filing Agreement