Rallybio Corp (RLYB) sees Balyasny group report 0% ownership in 13G/A

Rhea-AI Filing Summary

Rallybio Corp received an amended Schedule 13G filing from Balyasny Asset Management L.P. and related entities reporting that they are not beneficial owners of Rallybio’s common stock. The reporting group, including BAM GP LLC, Balyasny Asset Management Holdings LP, Dames GP LLC, and Dmitry Balyasny, reports beneficial ownership of 0 shares, representing approximately 0% of the outstanding common stock, based on 5,298,137 shares outstanding as of May 8, 2026 as reported by Rallybio. The filers state they have no sole or shared voting or dispositive power over any Rallybio shares and confirm ownership of 5 percent or less of the class.

Key Figures

Shares beneficially owned: 0 shares Percent of class owned: 0.0 % Shares outstanding: 5,298,137 shares +2 more

5 metrics

Shares beneficially owned 0 shares Reported amount beneficially owned by all reporting persons

Percent of class owned 0.0 % Approximate percentage of Rallybio common stock reported by each reporting person

Shares outstanding 5,298,137 shares Rallybio common shares outstanding as of May 8, 2026, per referenced Form 10-Q

Ownership threshold 5 percent or less Item 5 statement on ownership of 5 percent or less of the class

Filing signature date 08/14/2026 Authorization dates for signatures by Scott Schroeder and Dmitry Balyasny

Key Terms

beneficial owner, Sole Voting Power, dispositive power, percent of class, +1 more

5 terms

beneficial owner financial

"The Reporting Persons would not be deemed to be the beneficial owner of any shares."

A beneficial owner is the person who ultimately owns or controls a financial asset or property, even if their name isn't directly on official documents. Think of it like someone who secretly holds the keys to a safe deposit box—others may appear to have access, but the true owner is the one who benefits from what's inside. Identifying beneficial owners helps ensure transparency and prevent illegal activities like money laundering or fraud.

Sole Voting Power financial

"Each of the Reporting Persons has the sole power to vote or to direct the vote of 0 shares."

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.

dispositive power financial

"Each of the Reporting Persons has the sole power to dispose or to direct the disposition of 0 shares."

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.

percent of class financial

"Each of the Reporting Persons may be deemed to be the beneficial owner of approximately 0% of the Shares, based on 5,298,137 Shares Outstanding"

Percent of class is the portion of a specific category of securities—such as a company’s common shares, preferred shares, or a bond series—that takes part in or approves a corporate action (vote, consent, tender, etc.). Investors watch this number because it reveals how much support or opposition exists within that particular shareholder group; like counting how many members of a club back a proposal, it can determine whether a plan passes or how influence is distributed.

Ownership of 5 percent or less of a class financial

"Item 5. | Ownership of 5 Percent or Less of a Class. | Ownership of 5 percent or less of a class"

FAQ

What does the Schedule 13G/A filing report for Rallybio Corp (RLYB)?

The filing reports that the Balyasny-related reporting persons no longer beneficially own Rallybio common stock. They disclose 0 shares and approximately 0% of the outstanding common stock, with no voting or dispositive power over any shares.

How many Rallybio (RLYB) shares are outstanding according to this filing?

The reporting group bases its percentage on 5,298,137 Rallybio common shares outstanding as of May 8, 2026. This outstanding share figure comes from Rallybio’s Form 10-Q referenced in the ownership calculation.

What ownership percentage in Rallybio (RLYB) do the Balyasny entities report?

The Balyasny entities and Dmitry Balyasny collectively report beneficial ownership of approximately 0% of Rallybio’s common stock. They also state they would not be deemed the beneficial owner of any shares of the issuer.

Do the Balyasny reporting persons have any voting power in Rallybio (RLYB)?

No. Each reporting person states 0 shares with sole voting power and 0 shares with shared voting power. They similarly report 0 shares for both sole and shared power to dispose or direct the disposition.

Who are the reporting persons in this Rallybio (RLYB) Schedule 13G/A?

The reporting persons are Balyasny Asset Management L.P., BAM GP LLC, Balyasny Asset Management Holdings LP, Dames GP LLC, and Dmitry Balyasny. They file jointly regarding Rallybio’s common stock ownership.

What threshold statement is made about Rallybio (RLYB) ownership in Item 5?

Item 5 states Ownership of 5 percent or less of a class for Rallybio’s common stock. This confirms the reporting persons’ beneficial ownership is at or below the 5% reporting threshold for the security class.

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

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Available on EDGAR 08/14/2026 - 06:09 AM Accepted by SEC EDGAR 08/14/2026 - 06:08 AM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Rallybio Corp

(Name of Issuer)

Common Stock

(Title of Class of Securities)

75120L209

(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): 75120L209

1

Names of Reporting Persons

BALYASNY ASSET MANAGEMENT L.P.

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 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0.0 %

12

Type of Reporting Person (See Instructions)

IA, PN

SCHEDULE 13G

CUSIP Number(s): 75120L209

1

Names of Reporting Persons

BAM GP 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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0.0 %

12

Type of Reporting Person (See Instructions)

HC, OO

SCHEDULE 13G

CUSIP Number(s): 75120L209

1

Names of Reporting Persons

Balyasny Asset Management Holdings LP

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 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0.0 %

12

Type of Reporting Person (See Instructions)

HC, PN

SCHEDULE 13G

CUSIP Number(s): 75120L209

1

Names of Reporting Persons

Dames GP 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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0.0 %

12

Type of Reporting Person (See Instructions)

HC, OO

SCHEDULE 13G

CUSIP Number(s): 75120L209

1

Names of Reporting Persons

Dmitry Balyasny

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

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0.0 %

12

Type of Reporting Person (See Instructions)

HC, IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Rallybio Corp
(b)	Address of issuer's principal executive offices: 234 Church Street, Suite 1020, New Haven, CT 06510
Item 2.
(a)	Name of person filing: This statement is being filed by (1) Balyasny Asset Management L.P., a Delaware limited partnership ("BAM"), (2) BAM GP LLC, a Delaware limited liability company ("BAM GP"), (3) Balyasny Asset Management Holdings LP, a Delaware limited partnership ("BAM Holdings"), (4) Dames GP LLC, a Delaware limited liability company ("Dames"), and (5) Dmitry Balyasny, a United States citizen (collectively, the "Reporting Persons"). BAM GP is the General Partner of BAM. BAM Holdings is the Sole Member of BAM GP. Dames is the General Partner of BAM Holdings. Dmitry Balyasny is the Managing Member of Dames.
(b)	Address or principal business office or, if none, residence: The principal business address of each of BAM, BAM GP, BAM Holdings, Dames, and Mr. Balyasny is located at 444 West Lake Street, 50th Floor, Chicago, IL 60606.
(c)	Citizenship: (1) BAM is a Delaware limited partnership, (2) BAM GP is a Delaware limited liability company, (3) BAM Holdings is a Delaware limited partnership, (4) Dames is a Delaware limited liability company, and (5) Mr. Balyasny is a United States citizen.
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 75120L209
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 Reporting Persons would not be deemed to be the beneficial owner of any shares.
(b)	Percent of class: Each of the Reporting Persons may be deemed to be the beneficial owner of approximately 0% of the Shares, based on 5,298,137 Shares Outstanding as of May 8, 2026 as reported in the Issuer's Form 10-Q filed with the Securities and Exchange Commission on May 13, 2026. The report amount consist of 0 Shares.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: Each of the Reporting Persons has the sole power to vote or to direct the vote of 0 shares.
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: Each of the Reporting Persons has the sole power to dispose or to direct the disposition of 0 shares.
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
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.

BALYASNY ASSET MANAGEMENT L.P.

Signature:	/s/ Scott Schroeder
Name/Title:	Scott Schroeder / Authorized Signatory
Date:	08/14/2026

BAM GP LLC

Signature:	/s/ Scott Schroeder
Name/Title:	Scott Schroeder / Authorized Signatory
Date:	08/14/2026

Balyasny Asset Management Holdings LP

Signature:	/s/ Scott Schroeder
Name/Title:	Scott Schroeder / Authorized Signatory
Date:	08/14/2026

Dames GP LLC

Signature:	/s/ Scott Schroeder
Name/Title:	Scott Schroeder / Authorized Signatory
Date:	08/14/2026

Dmitry Balyasny

Signature:	/s/ Dmitry Balyasny
Name/Title:	Dmitry Balyasny / Self
Date:	08/14/2026