SOUTH BOW CORP reports an institutional beneficial-ownership disclosure by FMR LLC. FMR LLC beneficially owns 21,852,470.53 shares of Common Stock, representing 10.5% of the class as reported. The cover shows the reporting date 06/30/2026. The filing lists sole voting power of 21,542,412 and sole dispositive power of 21,852,470.53 attributed to FMR LLC; Abigail P. Johnson is named with shared dispositive attribution consistent with the cover responses.
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Insights
FMR LLC holds a disclosed 10.5% passive position in SOUTH BOW CORP as of 06/30/2026.
FMR LLC is reported as beneficial owner of 21,852,470.53 shares with sole dispositive power. The filing is a Schedule 13G-style disclosure that typically indicates passive/institutional ownership rather than an active control stake.
Timing and cash-flow treatment are not described here; subsequent filings would be required to show any changes in position or transaction activity.
Voting and dispositive power are itemized, highlighting where authority resides within the FMR group.
The cover reports 21,542,412 sole voting power and 21,852,470.53 sole dispositive power, tying control attributes to FMR LLC and naming Abigail P. Johnson in the responses. The exhibit references a power of attorney and Exhibit 99.
Shareholders seeking further attribution should consult the cited exhibits and any Form 13D/13G amendments for changes after 06/30/2026.
Key Figures
Reporting date:06/30/2026Beneficial ownership:21,852,470.53 sharesPercent of class:10.5%+2 more
5 metrics
Reporting date06/30/2026cover period shown on the schedule
Beneficial ownership21,852,470.53 sharesAmount beneficially owned reported in Item 4
Percent of class10.5%Percent of common stock reported in Item 4
Sole voting power21,542,412 sharesSole voting power reported on the cover
Sole dispositive power21,852,470.53 sharesSole dispositive power reported on the cover
Key Terms
Schedule 13G, beneficially owned, sole dispositive power, power of attorney
4 terms
Schedule 13Gregulatory
"Item 1: Name of issuer: SOUTH BOW CORP"
A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.
beneficially ownedfinancial
"Item 4: Amount beneficially owned: 21852470.53"
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.
sole dispositive powerregulatory
"cover: Sole Dispositive Power 21,852,470.53"
Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.
power of attorneylegal
"Signed: Duly authorized under Power of Attorney effective as of April 13, 2026"
A power of attorney is a legal document that allows one person to make decisions and act on behalf of another person, often in financial or legal matters. It’s like giving someone a trusted helper or agent the authority to handle important tasks if you are unable to do so yourself. This matters to investors because it can impact how their assets are managed or transferred if they become unable to oversee their affairs.
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What stake does FMR LLC report in SOUTH BOW CORP (SOBO)?
FMR LLC reports beneficial ownership of 21,852,470.53 shares, equal to 10.5% of the common stock as shown on the schedule dated 06/30/2026. The filing lists voting and dispositive powers attributed to FMR LLC.
Who is named alongside FMR LLC in the Schedule 13G for SOBO?
The filing names Abigail P. Johnson in the cover responses with dispositive power aligned to the FMR disclosures. Signatures reference authorization under a power of attorney executed April 13, 2026 and signed July 7, 2026.
What voting and disposition powers does the filing show for FMR LLC?
The schedule reports sole voting power of 21,542,412 shares and sole dispositive power of 21,852,470.53 shares for FMR LLC. Shared voting and dispositive powers are reported as 0.00 in the excerpt.
Does the Schedule 13G indicate any person holds more than 5% besides FMR LLC?
The filing states that other persons may have rights to dividends or proceeds, but specifies that no other single person's interest exceeds 5% of the outstanding common stock of SOUTH BOW CORP.
Where can I find supporting exhibits referenced in the SOBO filing?
The disclosure references Exhibit 99 for a 13d-1(k)(1) agreement and incorporates a power of attorney by reference to an Exhibit 24 filed April 29, 2026. Those exhibits contain subsidiary and authorization details.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
SOUTH BOW CORP
(Name of Issuer)
COMMON STOCK
(Title of Class of Securities)
83671M105
(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):
83671M105
1
Names of Reporting Persons
FMR 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
21,542,412.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
21,852,470.53
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
21,852,470.53
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)
10.5 %
12
Type of Reporting Person (See Instructions)
HC
SCHEDULE 13G
CUSIP Number(s):
83671M105
1
Names of Reporting Persons
Abigail P. Johnson
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
21,852,470.53
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
21,852,470.53
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)
10.5 %
12
Type of Reporting Person (See Instructions)
IN
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
SOUTH BOW CORP
(b)
Address of issuer's principal executive offices:
707 5 STREET SW,SUITE 900,CALGARY,Z4,Canada,T2P 1V8
Item 2.
(a)
Name of person filing:
FMR LLC
(b)
Address or principal business office or, if none, residence:
245 Summer Street, Boston, Massachusetts 02210
(c)
Citizenship:
Not applicable
(d)
Title of class of securities:
COMMON STOCK
(e)
CUSIP Number(s):
83671M105
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:
21852470.53
(b)
Percent of class:
10.5 %
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
Please see the responses to Items 5 and 6 on the cover page.
(ii) Shared power to vote or to direct the vote:
0.00
(iii) Sole power to dispose or to direct the disposition of:
21852470.53
(iv) Shared power to dispose or to direct the disposition of:
0.00
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.
One or more other persons are known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the COMMON STOCK of SOUTH BOW CORP. No one other person's interest in the COMMON STOCK of SOUTH BOW CORP is more than five percent of the total outstanding COMMON STOCK.
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary.
See attached Exhibit 99.
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.
FMR LLC
Signature:
Richard Bourgelas
Name/Title:
Duly authorized under Power of Attorney effective as of April 13, 2026, by and on behalf of FMR LLC and its direct and indirect subsidiaries*
Date:
07/07/2026
Abigail P. Johnson
Signature:
Richard Bourgelas
Name/Title:
Duly authorized under Power of Attorney effective as of April 13, 2026, by and on behalf of Abigail P. Johnson*
Date:
07/07/2026
Comments accompanying signature: *This power of attorney is incorporated herein by reference to Exhibit 24 to the Schedule 13G filed by FMR LLC on April 29,2026, accession number: 0000315066-26-000738.
