1607 Capital reports 5.11% stake in Nuveen Select Maturities

1607 Capital Partners, LLC reported beneficial ownership of common shares of Nuveen Select Maturities Municipal Fund.

Rhea-AI Filing Summary

1607 Capital Partners, LLC reported beneficial ownership of common shares of Nuveen Select Maturities Municipal Fund. The firm holds 635,777 common shares, representing 5.11% of the outstanding class as of June 30, 2026. These shares carry sole voting power and sole dispositive power for the full 635,777 shares, with no shared voting or dispositive authority reported.

Key Figures

Beneficial ownership: 635,777 shares Percent of class: 5.11% Sole voting power: 635,777 shares +1 more

4 metrics

Beneficial ownership 635,777 shares Common shares of Nuveen Select Maturities Municipal Fund beneficially owned by 1607 Capital Partners as of June 30, 2026

Percent of class 5.11% Portion of NIM common share class beneficially owned by 1607 Capital Partners

Sole voting power 635,777 shares Shares for which 1607 Capital Partners has sole power to vote or direct the vote

Sole dispositive power 635,777 shares Shares for which 1607 Capital Partners has sole power to dispose or direct disposition

Key Terms

beneficially owned, sole voting power, sole dispositive power, percent of class

4 terms

beneficially owned financial

"Ownership (a) | Amount beneficially owned: 635,777"

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 voting power financial

"Sole power to vote or to direct the vote: 635,777"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

sole dispositive power financial

"Sole power to dispose or to direct the disposition of: 635,777"

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.

percent of class financial

"(b) | Percent of class: 5.11%"

Percent of class is the portion of a specific category of securities—such as a company’s common shares, preferred shares, or a bond series—that takes part in or approves a corporate action (vote, consent, tender, etc.). Investors watch this number because it reveals how much support or opposition exists within that particular shareholder group; like counting how many members of a club back a proposal, it can determine whether a plan passes or how influence is distributed.

FAQ

What percentage of Nuveen Select Maturities Municipal Fund (NIM) does 1607 Capital Partners own?

1607 Capital Partners, LLC reported beneficial ownership of 5.11% of Nuveen Select Maturities Municipal Fund’s common shares. This percentage is based on 635,777 shares beneficially owned as of June 30, 2026.

How many NIM shares are beneficially owned by 1607 Capital Partners?

1607 Capital Partners, LLC beneficially owns 635,777 common shares of Nuveen Select Maturities Municipal Fund. All of these shares are reported with sole voting and sole dispositive power, and no shared authority.

Does 1607 Capital Partners have sole or shared voting power over its NIM holdings?

1607 Capital Partners, LLC reports sole voting power over 635,777 NIM shares and no shared voting power. It also has sole dispositive power over the same number of shares, with no shared dispositive authority.

What class of securities of Nuveen Select Maturities Municipal Fund is held by 1607 Capital Partners?

1607 Capital Partners, LLC holds common shares of Nuveen Select Maturities Municipal Fund, each with a $0.01 par value. The reported beneficial ownership relates specifically to this class of securities.

Who signed the NIM ownership report for 1607 Capital Partners?

The ownership report was signed by Kevin Rutherford, Chief Compliance Officer of 1607 Capital Partners, LLC. His signature certifies the accuracy of the reported 635,777 shares and 5.11% beneficial ownership stake.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/14/2026 - 02:20 PM Accepted by SEC EDGAR 08/14/2026 - 02:19 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 5)

Nuveen Select Maturities Municipal Fund

(Name of Issuer)

Common shares, $0.01 par value

(Title of Class of Securities)

67061T101

(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): 67061T101

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 635,777.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 635,777.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

635,777.00

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)

5.11 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Nuveen Select Maturities Municipal Fund
(b)	Address of issuer's principal executive offices: 333 West Wacker Drive, Chicago, IL 60606
Item 2.
(a)	Name of person filing: 1607 Capital Partners, LLC
(b)	Address or principal business office or, if none, residence: 13 S. 13th Street, Suite 400, Richmond, Virginia 23219
(c)	Citizenship: Delaware, United States
(d)	Title of class of securities: Common shares, $0.01 par value
(e)	CUSIP No.: 67061T101
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: 635,777
(b)	Percent of class: 5.11%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 635,777
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 635,777
	(iv) Shared power to dispose or to direct the disposition of: 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.
	Not Applicable
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:	08/14/2026