Korro Bio, Inc. ownership disclosure: Point72 reporting persons state beneficial ownership of 276,831 shares of Common Stock, representing 1.9% of the class as of March 31, 2026.
The amendment names Point72 Asset Management, Point72 Capital Advisors, Point72 Biotech Private Investments, Differentiated Ventures, 72 Investment Holdings, and Steven A. Cohen and describes shared voting and dispositive power for the listed shares.
Positive
None.
Negative
None.
Insights
Point72 reports a sub-5% passive stake held through related entities.
The filing shows 276,831 shares and a 1.9% ownership stake as of March 31, 2026, held across Point72-related vehicles. Disclosure focuses on shared voting and dispositive power rather than sole control.
Timing is an ownership snapshot; subsequent filings would show changes. Cash-flow treatment and trading intent are not stated in the excerpt.
Key Figures
Shares beneficially owned:276,831 sharesPercent of class:1.9%CUSIP:500946108
3 metrics
Shares beneficially owned276,831 sharesas of March 31, 2026
"The filing states beneficial ownership of the Common Stock was as of the close of business on March 31, 2026."
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
shared dispositive powerregulatory
"Row 8 lists Shared Dispositive Power 276,831.00 for certain reporting persons."
Section 13regulatory
"The filing notes the statement should not be construed as an admission of beneficial ownership for purposes of Section 13."
Section 13 of the U.S. Securities Exchange Act requires public companies and large shareholders to disclose important ownership and reporting information to the market, including regular financial reports and filings when someone builds a significant stake. For investors it acts like a public checkbook and alert system: it provides verified updates on a company’s health and who controls it, helping buyers judge risk, spot takeover activity, and make informed decisions.
What stake does Point72 report in Korro Bio (KRRO)?
Point72 reporting persons disclose ownership of 276,831 shares, equal to 1.9% of Korro Bio's common stock as of March 31, 2026. The shares are held across several Point72-related entities and aggregated for reporting purposes.
Which Point72 entities are named in the KRRO Schedule 13G/A?
The filing lists Point72 Asset Management, Point72 Capital Advisors, Point72 Biotech Private Investments, Differentiated Ventures, 72 Investment Holdings, and Steven A. Cohen. The address for these reporting persons is Stamford, Connecticut.
Does the filing indicate who has voting or dispositive power over the shares?
The amendment reports shared voting and shared dispositive power for 276,831 shares as of March 31, 2026. Row-level cover-page entries cited in Item 4 detail sole versus shared powers for each reporting person.
Is the reported ownership more than 5% of Korro Bio?
No. The filing explicitly states the holding equals 1.9% of the class as of March 31, 2026, which is below the 5% threshold that triggers different disclosure requirements.
Does this amendment explain why the ownership changed or trading intent?
No. The amendment provides an ownership snapshot and organizational attributions; it does not state trading intent, purchases, sales, or proceeds. Any changes or trading rationale would appear in separate filings if disclosed.
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
Point72 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 %
12
Type of Reporting Person (See Instructions)
PN
SCHEDULE 13G
CUSIP Number(s):
500946108
1
Names of Reporting Persons
Point72 Capital Advisors, Inc.
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)
CO
SCHEDULE 13G
CUSIP Number(s):
500946108
1
Names of Reporting Persons
Point72 Biotech Private Investments, 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
276,831.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
276,831.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
276,831.00
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)
1.9 %
12
Type of Reporting Person (See Instructions)
OO
SCHEDULE 13G
CUSIP Number(s):
500946108
1
Names of Reporting Persons
Differentiated Ventures Investments, 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
276,831.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
276,831.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
276,831.00
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)
1.9 %
12
Type of Reporting Person (See Instructions)
OO
SCHEDULE 13G
CUSIP Number(s):
500946108
1
Names of Reporting Persons
72 Investment Holdings, 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
276,831.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
276,831.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
276,831.00
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)
1.9 %
12
Type of Reporting Person (See Instructions)
OO
SCHEDULE 13G
CUSIP Number(s):
500946108
1
Names of Reporting Persons
Steven A. Cohen
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
276,831.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
276,831.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
276,831.00
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)
1.9 %
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:
This statement is filed by: (i) Point72 Asset Management, L.P. ("Point72 Asset Management") with respect to the shares of common stock, par value $0.001 per share ("Common Stock"), of Korro Bio, Inc. that were held by an investment fund it manages; (ii) Point72 Capital Advisors, Inc. ("Point72 Capital Advisors Inc."), the general partner of Point72 Asset Management, with respect to the shares of Common Stock that were held by an investment fund managed by Point72 Asset Management; (iii) Point72 Biotech Private Investments, LLC ("Point72 Biotech") with respect to the shares of Common Stock of which it is the holder; (iv) Differentiated Ventures Investments, LLC ("Differentiated Ventures"), the managing member of Point72 Biotech, with respect to the shares of Common Stock held by Point72 Biotech; (v) 72 Investment Holdings, LLC ("72 Investment Holdings"), the sole member of Differentiated Ventures, with respect to the shares of Common Stock held by Point72 Biotech, and (vi) Steven A. Cohen ("Mr. Cohen"), the sole member of 72 Investment Holdings and sole shareholder of Point72 Capital Advisors Inc., with respect to the shares of Common Stock that were beneficially owned by Point72 Asset Management and Point72 Capital Advisors Inc., and shares of Common Stock beneficially owned by Point72 Biotech, Differentiated Ventures, and 72 Investment Holdings.
(b)
Address or principal business office or, if none, residence:
The address of the principal business office of Point72 Asset Management, Point72 Capital Advisors Inc., Point72 Biotech, Differentiated Ventures, 72 Investment Holdings, and Mr. Cohen is 72 Cummings Point Road, Stamford, CT 06902.
(c)
Citizenship:
Point72 Asset Management is a Delaware limited partnership. Point72 Capital Advisors Inc. is a Delaware corporation. Point72 Biotech, Differentiated Ventures, and 72 Investment Holdings are Delaware limited liability companies. Mr. Cohen is a United States citizen.
(d)
Title of class of securities:
Common Stock, par value $0.001 per share
(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:
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. Such information is as of the close of business on March 31, 2026.
Differentiated Ventures is the managing member of Point72 Biotech and may be deemed to share beneficial ownership over the shares of Common Stock held by Point72 Biotech. 72 Investment Holdings is the sole member of Differentiated Ventures and may be deemed to share beneficial ownership of the shares of Common Stock of which Differentiated Ventures may be deemed the beneficial owner. Mr. Cohen controls each of Point72 Biotech, Differentiated Ventures, and 72 Investment Holdings.
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 Common Stock reported herein.
(b)
Percent of class:
1.9%
(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. Such information is as of the close of business on March 31, 2026.
(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. Such information is as of the close of business on March 31, 2026.
(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. Such information is as of the close of business on March 31, 2026.
(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. Such information is as of the close of business on March 31, 2026.
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.
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.
See Item 2(a).
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.
