Driehaus exits Korro Bio (KRRO) stake in amended 13G/A filing

Rhea-AI Filing Summary

Driehaus Capital Management LLC has amended its ownership report for Korro Bio, Inc., stating that it now beneficially owns 0 shares of Korro Bio common stock, representing 0% of the class as of 12/31/2025. The filer confirms it holds no sole or shared voting or dispositive power over any Korro Bio shares and notes this is an exit filing indicating ownership of 5 percent or less of the company’s common stock.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 2)

Korro Bio, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

500946108

(CUSIP Number)

12/31/2025

(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

DRIEHAUS 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

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 %

12

Type of Reporting Person (See Instructions)

IA

Comment for Type of Reporting Person: Exit Filing

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, Massachusetts, 02141
Item 2.
(a)	Name of person filing: Driehaus Capital Management LLC
(b)	Address or principal business office or, if none, residence: 25 East Erie Street, Chicago, Illinois 60611
(c)	Citizenship: USA
(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: 0
(b)	Percent of class: 0 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 0
	(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.

DRIEHAUS CAPITAL MANAGEMENT LLC

Signature:	Janet McWilliams
Name/Title:	Janet McWilliams, General Counsel
Date:	02/17/2026

FAQ

What does Korro Bio (KRRO) disclose in this Schedule 13G/A?

The filing shows Driehaus Capital Management LLC now reports owning 0 shares of Korro Bio common stock, representing 0% of the class as of December 31, 2025, indicating it no longer holds a reportable ownership stake.

Who is the reporting person in Korro Bio (KRRO)'s Schedule 13G/A?

The reporting person is Driehaus Capital Management LLC, organized in Delaware with a principal office at 25 East Erie Street, Chicago, Illinois 60611. It previously reported holdings in Korro Bio but now reports no beneficial ownership.

What ownership level does Driehaus report in Korro Bio (KRRO)?

Driehaus Capital Management LLC reports beneficial ownership of 0 shares of Korro Bio common stock, equal to 0% of the outstanding class. It also reports zero sole or shared voting and dispositive power over any Korro Bio shares.

What does “Ownership of 5 percent or less” mean for Korro Bio (KRRO)?

The filing states “Ownership of 5 percent or less of a class,” meaning Driehaus Capital Management LLC no longer holds at least 5% of Korro Bio’s common stock, and therefore reports its position as an exit filing with 0% beneficial ownership.

When did the ownership change triggering this Korro Bio (KRRO) filing occur?

The date of the event requiring the statement is December 31, 2025. As of that date, Driehaus Capital Management LLC reports that it beneficially owns no Korro Bio common shares and has no voting or dispositive power over any shares.

How does Driehaus describe the purpose of its Korro Bio (KRRO) holdings?

Driehaus certifies the securities referenced were acquired and held in the ordinary course of business, not to change or influence control of Korro Bio, and not in connection with any control-related transaction, other than activities solely tied to a nomination under Rule 240.14a-11.