UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 5, 2020 (October 5, 2020)

NUVEEN SENIOR INCOME FUND

(Exact name of registrant as specified in its charter)

Massachusetts

811-09571

36-4316644

(State or other jurisdiction

of incorporation)

(Commission

File Number)

(I.R.S. Employer

Identification No.)

333 West Wacker Drive

Chicago, Illinois

60606

(Address of principal executive offices)

(Zip Code)

Registrant’s telephone number, including area code: (800) 257-8787

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d- 2(b))

☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13-4(c))

Securities registered or to be registered pursuant to Section 12(b) of the Act.

Title of each class

Trading

Symbol(s)

Name of each exchange on which registered

Common Stock

NSL

New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 7.01 Regulation FD Disclosure.

Amended and Restated By-Laws. On October 5, 2020, the Board of Trustees of Nuveen Senior Income Fund, a registered closed-end management investment company (the “Fund”), amended and restated in its entirety the Amended and Restated By-Laws of the Fund (the “Amended and Restated By-Laws”). The Amended and Restated By-Laws are attached hereto as Exhibit 3.1 and are incorporated herein by reference.

On October 5, 2020, the Fund issued a press release in connection with the adoption of the Amended and Restated By-Laws.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits


3.1		Amended and Restated By-Laws

99.1		Press Release, dated October 5, 2020

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.


	NUVEEN SENIOR INCOME FUND

	By:	/s/ Gifford R. Zimmerman

	Name:	Gifford R. Zimmerman

	Title:	Vice President and Secretary
DATE: October 5, 2020

NUVEEN SENIOR INCOME FUND 8-K