Aristeia Capital holds 1.4M shares in GigCapital9 (GIX), 5.45% stake

Rhea-AI Filing Summary

GigCapital9 Corp. reports that Aristeia Capital, L.L.C. beneficially owns 1,400,000 Class A ordinary shares, representing 5.45% of the outstanding Class A shares. The ownership stake is calculated using 25,688,954 shares outstanding as of March 30, 2026, per the issuer's 10-K.

The filing lists sole voting and dispositive power over the 1,400,000 shares and is signed by Andrew B. David as Chief Operating Officer of Aristeia Capital, L.L.C.

Insights

Institutional Ownership Analyst

Aristeia holds a mid-single-digit stake with full voting control of its shares.

Aristeia Capital reports beneficial ownership of 1,400,000 shares (5.45%) using an outstanding share base of 25,688,954 as of March 30, 2026. The filing states sole voting and dispositive power over all reported shares, indicating direct control of how those shares are voted.

Subsequent disclosures or transactions would change its percentage; future Schedule 13D/13G or Form 4 filings would update holdings or intent.

Corporate Governance Specialist

Filing is a passive ownership disclosure under Schedule 13G mechanics.

The filing identifies Aristeia as the reporting person and attributes the position to the entity, signed by an authorized officer. It documents ownership and voting authority without describing any change in control proposal or plans.

Stake size (5.45%) is below typical 10% activist thresholds; any shift in intentions would require amended disclosures.

Key Figures

Beneficial ownership: 1,400,000 shares Ownership percent: 5.45% Shares outstanding used: 25,688,954 shares +1 more

4 metrics

Beneficial ownership 1,400,000 shares Class A ordinary shares held by Aristeia Capital

Ownership percent 5.45% Percent of Class A outstanding as reported in Schedule 13G

Shares outstanding used 25,688,954 shares Shares outstanding as of March 30, 2026 per the issuer's 10-K

Filing date / signature May 14, 2026 Signature date on Schedule 13G

Key Terms

beneficially owned, sole voting power, Schedule 13G, dispositive power

4 terms

beneficially owned regulatory

"The Reporting Person may be deemed the beneficial owner of 1,400,000 Class A ordinary shares"

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.

sole voting power governance

"Sole power to vote or to direct the vote: 1,400,000"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

Schedule 13G regulatory

"Item 1. (a) Name of issuer: GigCapital9 Corp."

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.

dispositive power governance

"Sole power to dispose or to direct the disposition of: 1,400,000"

Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.

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

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Accepted by SEC EDGAR 05/14/2026 - 09:03 AM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

GigCapital9 Corp.

(Name of Issuer)

Class A ordinary share, par value $0.0001 per share

(Title of Class of Securities)

G3865B114

(CUSIP Number)

03/31/2026

(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): G3865B114

1

Names of Reporting Persons

Aristeia Capital, L.L.C.

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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,400,000.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,400,000.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,400,000.00

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)

5.45 %

12

Type of Reporting Person (See Instructions)

IA, OO

SCHEDULE 13G

Item 1.
(a)	Name of issuer: GigCapital9 Corp.
(b)	Address of issuer's principal executive offices: 1731 Embarcadero Rd., Suite 200, Palo Alto, CA 94303
Item 2.
(a)	Name of person filing: Aristeia Capital, L.L.C.
(b)	Address or principal business office or, if none, residence: One Greenwich Plaza, Suite 300, Greenwich, CT 06830
(c)	Citizenship: Delaware
(d)	Title of class of securities: Class A ordinary share, par value $0.0001 per share
(e)	CUSIP Number(s): G3865B114
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: 1,400,000 The Reporting Person may be deemed the beneficial owner of 1,400,000 Class A ordinary shares, which is approximately 5.45% of the outstanding shares. This percentage was determined by dividing 1,400,000 by 25,688,954, which is the number of shares outstanding as of March 30, 2026, as reported in the Issuer's 10-K filed with the SEC on March 31, 2026.
(b)	Percent of class: 5.45%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 1,400,000
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 1,400,000
	(iv) Shared power to dispose or to direct the disposition of: 0
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.
	Not Applicable
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.

Aristeia Capital, L.L.C.

Signature:	/s/ Andrew B. David
Name/Title:	Andrew B. David / Chief Operating Officer, Aristeia Capital, L.L.C.
Date:	05/14/2026