Western Asset Investment Grade Opportunity Trust Inc. Schedule 13G/A shows 1607 Capital Partners, LLC reports beneficial ownership of 406,754 shares (representing 6.79% of the class) and the Asset Management Committee of Dominion Energy, Inc. reports 321,704 shares (5.37%). The filing explains these amounts arise from investment management agreements where 1607 has sole voting and dispositive power; Dominion's ownership is recorded because it may terminate its IMA with less than sixty days' notice.
The filing lists exact share counts: 406,754 shares for 1607 and 321,704 shares for Dominion, with 1607 holding sole voting and dispositive authority under client IMAs. The percentages are presented as percent of class.
Key dependency is the IMA structure: Dominion is recorded due to a termination right under its IMA while lacking voting/dispositive authority. Subsequent filings would show changes to these positions.
Key Figures
1607 shares:406,754 shares1607 percent:6.79%Dominion committee shares:321,704 shares+4 more
7 metrics
1607 shares406,754 sharesbeneficial ownership reported on Schedule 13G/A
1607 percent6.79%percent of class as reported
Dominion committee shares321,704 sharesbeneficial ownership reported on Schedule 13G/A
Dominion percent5.37%percent of class as reported
CUSIP95790A101security identifier on cover
Cover date03/31/2026date shown on cover page
Signatures dated05/15/2026signature dates for joint filing agreement
"1607 clients who hold such shares in their investment advisory accounts managed by 1607"
beneficial ownershipregulatory
"1607 Capital Partners, LLC is the beneficial owner of the shares shown based on having sole voting power"
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.
Joint Filing Agreement pursuant to Rule 13d-1(k)regulatory
"JOINT FILING AGREEMENT PURSUANT TO RULE 13d-1(k) The undersigned acknowledge and agree"
What stake does 1607 Capital Partners report in IGI?
1607 Capital Partners reports 406,754 shares, equal to 6.79% of the class. The filing states 1607 has sole voting and dispositive power under client IMAs, and the count reflects those authorities.
Why is the Asset Management Committee of Dominion Energy listed for IGI?
The Committee is listed with 321,704 shares or 5.37% because it is a client of 1607 with a termination right under the IMA. The filing says Dominion has no voting or dispositive authority under the IMA.
Do these filings say 1607 or Dominion can vote the shares?
The filing states 1607 has sole current authority to vote and dispose of the shares; Dominion is recorded solely because it can terminate the IMA on less than sixty days' notice.
What dates and signatures appear on this Schedule 13G/A for IGI?
The cover lists 03/31/2026 and signatures are dated 05/15/2026. The joint filing agreement is signed by Kevin Rutherford for 1607 and Nicholas Everett for Dominion's committee.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 1)
Western Asset Investment Grade Opportunity Trust Inc.
(Name of Issuer)
Common Stock
(Title of Class of Securities)
95790A101
(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):
95790A101
1
Names of Reporting Persons
1607 Capital Partners, 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
406,754.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
406,754.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
406,754.00
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)
6.79 %
12
Type of Reporting Person (See Instructions)
IA
SCHEDULE 13G
CUSIP Number(s):
95790A101
1
Names of Reporting Persons
Asset Management Committee of Dominion Energy, 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
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
0.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
321,704.00
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)
5.37 %
12
Type of Reporting Person (See Instructions)
EP
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
Western Asset Investment Grade Opportunity Trust Inc.
(b)
Address of issuer's principal executive offices:
One Madison Avenue, 17th Floor, New York, NY 10010
Item 2.
(a)
Name of person filing:
1607 Capital Partners, LLC
Asset Management Committee of Dominion Energy, Inc.
(b)
Address or principal business office or, if none, residence:
13 S. 13TH STREET, SUITE 400, RICHMOND, VA, 23219
120 TREDEGAR ST. R4, RICHMOND, VA 23219
(c)
Citizenship:
Please refer to Item 4 on each cover sheet for each filing person
(d)
Title of class of securities:
Common Stock
(e)
CUSIP No.:
95790A101
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:
1607 Capital Partners, LLC (1607), an investment adviser, is the beneficial owner of the shares shown based on having sole voting power and sole power to dispose of these shares under all its client investment management agreements (IMAs). The Asset Management Committee of Dominion Energy, Inc. (Dominion) is a client of 1607 Capital Partners, LLC and is the beneficial owner of the shares shown solely due to being able to terminate its IMA with 1607 without cause or condition on less than sixty days written notice. Dominion has no authority under its IMA to either vote or dispose of the shares shown. The calculations in 4(c)(i) and (iii) reflect that under the Dominion IMA, 1607 has sole current authority, and Dominion has no current authority, to vote and dispose of the shares for which Dominion is deemed to have beneficial ownership due to its less than 60 day termination right.
1607 Capital Partners, LLC - 406,754
Asset Management Committee of Dominion Energy, Inc. - 321,704
(b)
Percent of class:
1607 Capital Partners, LLC - 6.79%
Asset Management Committee of Dominion Energy, Inc. - 5.37%
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
1607 Capital Partners, LLC - 406,754
Asset Management Committee of Dominion Energy, Inc. - 0
(ii) Shared power to vote or to direct the vote:
1607 Capital Partners, LLC - 0
Asset Management Committee of Dominion Energy, Inc. - 0
(iii) Sole power to dispose or to direct the disposition of:
1607 Capital Partners, LLC - 406,754
Asset Management Committee of Dominion Energy, Inc. - 0
(iv) Shared power to dispose or to direct the disposition of:
1607 Capital Partners, LLC - 0
Asset Management Committee of Dominion Energy, Inc. - 0
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.
With respect to the shares listed for 1607, the 1607 clients who hold such shares in their investment advisory accounts managed by 1607 have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of those shares. With respect to the shares listed for Dominion, no person other than Dominion has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of those shares.
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.
1607 Capital Partners, LLC
Signature:
Kevin Rutherford
Name/Title:
Kevin Rutherford | Chief Compliance Officer
Date:
05/15/2026
Asset Management Committee of Dominion Energy, Inc.
Signature:
Nicholas Everett
Name/Title:
Nicholas Everett | Director of Investments
Date:
05/15/2026
Exhibit Information
JOINT FILING AGREEMENT
PURSUANT TO RULE 13d-1(k)
The undersigned acknowledge and agree that the foregoing statement on Schedule 13G is filed on behalf of each of the undersigned and that allsubsequent amendments to this statement on Schedule 13G shall be filed on behalf of each of the undersigned without the necessity of filing additionaljoint acquisition statements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completenessand accuracy of the information concerning him or it contained therein, but shall not be responsible for the completeness and accuracy of the informationconcerning the others, except to the extent that he or it knows or has reason to believe that such information is inaccurate.
This agreement may be executed in multiple counterparts, each of which shall constitute an original, one and the same instrument.
Date: May 15, 2026
1607 Capital Partners, LLC
By:
/s/ Kevin Rutherford
Name:
Kevin Rutherford
Title:
Chief Compliance Officer
Asset Management Committee of Dominion Energy, Inc.
*This Reporting Person disclaims beneficial ownership in the securities reported herein, except to the extent of its pecuniary interest therein.
By:
/s/ Nicholas Everett
Name:
Nicholas Everett
Title:
Director of Investments
