Korro Bio, Inc. Schedule 13G/A shows Lynx1 Capital Management LP and Weston Nichols report beneficial ownership of 1,538,296 shares of Common Stock, representing 10.7% of 14,422,571 shares outstanding as of March 11, 2026. The disclosed position reflects shared voting and shared dispositive power over those shares.
Positive
None.
Negative
None.
Key Figures
Shares beneficially owned:1,538,296 sharesPercent of class:10.7%Shares outstanding used:14,422,571 shares
3 metrics
Shares beneficially owned1,538,296 sharesreported by Lynx1 and Weston Nichols
Percent of class10.7%of 14,422,571 shares outstanding as of March 11, 2026
Shares outstanding used14,422,571 sharesas of March 11, 2026 (Prospectus cited)
Key Terms
Schedule 13G/A, Beneficially owned, Shared dispositive power
3 terms
Schedule 13G/Aregulatory
"Amendment No. 1 ) Korro Bio, Inc. ... SCHEDULE 13G/A"
A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.
Beneficially ownedfinancial
"Amount beneficially owned: ... set forth in Row 9 of the cover page"
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.
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, par value $0.001 per share
(Title of Class of Securities)
500946108
(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):
500946108
1
Names of Reporting Persons
Lynx1 Capital Management 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
1,538,296.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,538,296.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,538,296.00
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)
10.7 %
12
Type of Reporting Person (See Instructions)
PN
SCHEDULE 13G
CUSIP Number(s):
500946108
1
Names of Reporting Persons
Weston Nichols
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
1,538,296.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,538,296.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,538,296.00
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)
10.7 %
12
Type of Reporting Person (See Instructions)
IN
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:
(i) Lynx1 Capital Management LP (the "Investment Manager"), a Delaware limited partnership, and the investment manager to Lynx1 Master Fund LP (the "Lynx1 Fund"), with respect to the shares of common stock, par value $0.001 per share ("Common Stock"), of Korro Bio, Inc., a Delaware corporation (the "Company"), directly held by the Lynx1 Fund; and
(ii) Mr. Weston Nichols ("Mr. Nichols"), the sole member of Lynx1 Capital Management GP LLC, the general partner of the Investment Manager, with respect to the shares of Common Stock directly held by the Lynx1 Fund.
The foregoing persons are hereinafter sometimes collectively referred to as the "Reporting Persons."
The filing of this statement should not be construed as an admission that any of the foregoing persons or any Reporting Person is, for the purposes of Section 13 of the Securities Exchange Act of 1934, the beneficial owner of the securities reported herein.
(b)
Address or principal business office or, if none, residence:
Lynx1 Capital Management LP
D81 Calle C
Suite 301, PMB 1202
Dorado, PR, 00646-2051
Weston Nichols
c/o Lynx1 Capital Management LP
D81 Calle C
Suite 301, PMB 1202
Dorado, PR, 00646-2051
(c)
Citizenship:
Investment Manager - Delaware
Mr. Nichols - United States of America
(d)
Title of class of securities:
Common Stock, par value $0.001 per share
(e)
CUSIP No.:
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 required by Item 4(a) is set forth in Row 9 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
The percentage set forth in this Schedule 13G is calculated based upon an aggregate of 14,422,571 shares of Common Stock outstanding as of March 11, 2026, as reported in the Company's Prospectus filed pursuant to Rule 424(b)(5) with the Securities and Exchange Commission on March 20, 2026.
(b)
Percent of class:
10.7%
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
The information required by Item 4(c)(i) is set forth in Row 5 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
(ii) Shared power to vote or to direct the vote:
The information required by Item 4(c)(ii) is set forth in Row 6 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
(iii) Sole power to dispose or to direct the disposition of:
The information required by Item 4(c)(iii) is set forth in Row 7 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
(iv) Shared power to dispose or to direct the disposition of:
The information required by Item 4(c)(iv) is set forth in Row 8 of the cover page for each of the Reporting Persons and 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.
If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
The Lynx1 Fund has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the shares of Common Stock reported herein.
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 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.
Lynx1 Capital Management LP
Signature:
/s/ Weston Nichols
Name/Title:
By: Lynx1 Capital Management GP LLC, General Partner, By: Weston Nichols, Sole Member
