Beneficial Ownership Report · SCHEDULE 13G/A
FIRST TRUST MORTGAGE INCOME FUND
Beneficial Ownership Report
Structured filing — SCHEDULE 13G/A
primary_doc.xml
Amendment · This filing reports the amendment as submitted.
Subject company
- Company
- FIRST TRUST MORTGAGE INCOME FUND
- Company CIK
- 0001319183
- Street
- 120 EAST LIBERTY DRIVE, SUITE 400
- Street (continued)
- 120 EAST LIBERTY DRIVE, SUITE 400
- City
- WHEATON
- State / country code
- IL
- Postal code
- 60187
Statement details
- Amendment number
- 15
- Security class
- Common Stock
- Event date
- 09/29/2026
- Rule designation
- Rule 13d-1(b)
Reporting person 1
- Name
- SIT INVESTMENT ASSOCIATES INC
- Citizenship / organization
- MN
- Reporting person type
- IA
- Group designation
- b
- Aggregate amount owned
- 2,320,350.00
- Percent of class
- 55.1
- Shared voting power
- 2,320,350.00
- Shared dispositive power
- 2,320,350.00
- Comments
- The Reporting Persons initially filed a Schedule 13G with respect to securities of the Issuer on 1/25/2007, and filed amendments thereto. Subsequently, the Reporting Persons' investment intent changed with respect to the securities of the Issuer and the Reporting Persons filed a Schedule 13D on 3/18/2015, and filed amendments thereto in accordance with Rule 13d-1(e) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). As of 9/29/2026 the Reporting Persons no longer hold securities of the Issuer with a purpose or effect of changing or influencing control of the Issuer, or in connection with or as a participant in any transaction having that purpose or effect. Accordingly, the Reporting Persons are transitioning back to a Schedule 13G pursuant to Rule 13d-1(c) of the Exchange Act in accordance with Rule 13d-1(h) of the Exchange Act, and this Amendment No. 15 will serve as the Reporting Persons' exit Schedule 13D.
Reporting person 2
- Name
- SIT FIXED INCOME ADVISORS II LLC /ADV
- Citizenship / organization
- DE
- Reporting person type
- IA
- Group designation
- b
- Aggregate amount owned
- 2,320,350.00
- Percent of class
- 55.1
- Shared voting power
- 2,320,350.00
- Shared dispositive power
- 2,320,350.00
- Comments
- The Reporting Persons initially filed a Schedule 13G with respect to securities of the Issuer on 1/25/2007, and filed amendments thereto. Subsequently, the Reporting Persons' investment intent changed with respect to the securities of the Issuer and the Reporting Persons filed a Schedule 13D on 3/18/2015, and filed amendments thereto in accordance with Rule 13d-1(e) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). As of 9/29/2026 the Reporting Persons no longer hold securities of the Issuer with a purpose or effect of changing or influencing control of the Issuer, or in connection with or as a participant in any transaction having that purpose or effect. Accordingly, the Reporting Persons are transitioning back to a Schedule 13G pursuant to Rule 13d-1(c) of the Exchange Act in accordance with Rule 13d-1(h) of the Exchange Act, and this Amendment No. 15 will serve as the Reporting Persons' exit Schedule 13D.
Item 1
Issuer
FIRST TRUST MORTGAGE INCOME FUND
Principal executive office address
120 EAST LIBERTY DRIVE, SUITE 400, 120 EAST LIBERTY DRIVE, SUITE 400, WHEATON, ILLINOIS, 60187.
Item 2
Citizenship
Sit Investment Associates, Inc. Minnesota Sit Fixed Income Advisors II, LLC Delaware
Filing person
Sit Investment Associates, Inc. Sit Fixed Income Advisors II, LLC
Principal business or residence address
80 South 8th Street, Suite 3300 Minneapolis, MN 55402
Item 3
Not applicable indication
N
Type of filing person
IA
Item 4
Percent of class
See response to item 11 on each cover page
Amount beneficially owned
See response to item 9 on each cover page
Sole voting power
See response to item 5 on each cover page
Shared voting power
See response to item 6 on each cover page
Sole dispositive power
See response to item 7 on each cover page
Shared dispositive power
See response to item 8 on each cover page. The ownership percentages reported are based on 4,2213,115 shares of common stock outstanding as of 10/31/2025, as reported in the Issuer's Report on Form N-CSR filed with the Securities Exchange Commission. Sit Investment Associates, Inc. ("SIA") is an investment adviser registered under section 203 of the Investment Advisers Act of 1940. Sit Fixed Income Advisors II, LLC ("SFI") is an investment adviser registered under section 203 of the Investment Advisers Act of 1940 and a subsidiary of SIA. SIA and SFI provide investment management services to client accounts ("Accounts"). In their roles as investment advisers SIA and SFI possess shared voting and investment power over securities of the Issuer described in this schedule 13G owned by the Accounts and may be deemed to be the beneficial owner of such shares of the Issuer owned by the Accounts. All securities reported in this schedule 13G are owned by the Accounts. Pursuant to Rule 13d-4 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), SIA and SFI disclaim beneficial ownership of such securities.
Item 5
Not applicable indication
Y
Item 6
Not applicable indication
N
Ownership on behalf of another person
Except as may be indicated if this is a joint filing with a registered investment company managed by SIA or SFI, not more than 5% of the class of such securities is owned by any one Account subject to the investment advice of SIA or SFI.
Item 7
Not applicable indication
Y
Item 8
Not applicable indication
Y
Item 9
Not applicable indication
Y
Item 10
Not applicable indication
N
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.
Exhibits
Exhibit A Joint Filing Agreement
Signature 1
- Reporting person
- SIT INVESTMENT ASSOCIATES INC
- Signed
- Paul Rasmussen
- Title
- Vice President
- Date
- 09/30/2026
Signature 2
- Reporting person
- SIT FIXED INCOME ADVISORS II LLC /ADV
- Signed
- Paul Rasmussen
- Title
- Vice President
- Date
- 09/30/2026
Filed exhibits
- JOINT FILING AGREEMENT ↗exhibitA20260930-FMY.pdf