[SCHEDULE 13G/A] Korro Bio, Inc. SEC Filing

Rhea-AI Filing Summary

AllianceBernstein L.P. reports beneficial ownership of 7,700 shares of Korro Bio Inc. common stock, representing 0.1% of the class. The filing states AllianceBernstein has sole voting and sole dispositive power over all 7,700 shares and holds the position in client discretionary investment advisory accounts for investment purposes. The filing notes AllianceBernstein is majority owned by Equitable Holdings but operates under independent management and that Equitable reports ownership separately. The statement affirms the position was not acquired to influence control of Korro Bio.

Insights

Financial Analyst

TL;DR: A small, noncontrolling stake: 7,700 shares (0.1%), held for discretionary client accounts with sole voting and dispositive power.

The position reported is immaterial to Korro Bio’s capitalization and is unlikely to affect market dynamics or corporate control. At 0.1% ownership, this holding does not meet common materiality thresholds and should not change short-term valuation drivers. The filing clarifies voting and disposition rights, which is helpful for transparency, but investors should note this is a routine disclosure by an investment adviser rather than an activist or strategic investor move.

Compliance / Corporate Governance Expert

TL;DR: Compliance-oriented disclosure: clear statement of sole control and investment purpose, with parent-company reporting separation noted.

The Schedule 13G/A appropriately identifies AllianceBernstein as an investment adviser (type "IA") and confirms the shares are held in the ordinary course of business for discretionary accounts. The inclusion of the parent/subsidiary relationship and the separate reporting practice by Equitable Holdings aligns with SEC guidance and reduces ambiguity about aggregate beneficial ownership. This filing poses no governance or control concerns for Korro Bio given the very small stake and explicit non-control intent.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Korro Bio Inc

(Name of Issuer)

Common Stock

(Title of Class of Securities)

500946108

(CUSIP Number)

06/30/2025

(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)

SCHEDULE 13G

CUSIP No. 500946108

1

Names of Reporting Persons

AllianceBernstein 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 7,700.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 7,700.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

7,700.00

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)

0.1 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Korro Bio Inc
(b)	Address of issuer's principal executive offices: 60 FIRST STREET 2ND FLOOR,, SUITE 250, CAMBRIDGE, MA 02141
Item 2.
(a)	Name of person filing: AllianceBernstein L.P. ("AllianceBernstein L.P.")
(b)	Address or principal business office or, if none, residence: 501 Commerce Street, Nashville, TN 37203 All media outlets, please contact Jennifer Will at AllianceBernstein (212-969-1157) with any questions. All other questions can be directed to Section13USFilings@alliancebernstein.com.
(c)	Citizenship: Delaware
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 500946108
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: 7,700 shares acquired solely for investment purposes on behalf of client discretionary investment advisory accounts.* *AllianceBernstein L.P. is a majority owned subsidiary of Equitable Holdings, Inc. ("EQH"). AllianceBernstein operates under independent management and makes independent decisions from EQH and its respective subsidiaries, and EQH calculates and reports beneficial ownership separately from AllianceBernstein pursuant to guidance provided by the Securities and Exchange Commission in Release Number 34-39538 (January 12, 1998).
(b)	Percent of class: 0.1 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 7,700
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 7,700
	(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.

AllianceBernstein L.P.

Signature:	Melissa Guerra
Name/Title:	VP/Director of Compliance
Date:	08/13/2025

FAQ

Who filed the Schedule 13G/A for Korro Bio (KRRO)?

AllianceBernstein L.P. filed the Schedule 13G/A as the reporting person.

How many Korro Bio (KRRO) shares does AllianceBernstein report owning?

7,700 shares, representing 0.1% of the class.

Does AllianceBernstein have voting or dispositive power over the shares?

Yes. The filing states AllianceBernstein has sole voting and sole dispositive power over all 7,700 shares.

For what purpose are the shares held by AllianceBernstein?

The shares are held for investment purposes in client discretionary investment advisory accounts.

Is this ownership intended to influence control of Korro Bio (KRRO)?

No. The filing certifies the shares were not acquired and are not held to change or influence control of the issuer.

Does AllianceBernstein report any group affiliation or parent company reporting detail?

AllianceBernstein notes it is majority owned by Equitable Holdings and that Equitable reports beneficial ownership separately; no group filing is reported.