The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

Names of reporting persons Mutual of America Capital Management LLC

Check the appropriate box if a member of a group (see instructions)

(a)  ☐        (b)  ☐

SEC use only

Citizenship or place of organization Delaware

Number of

shares

beneficially

owned by

each

reporting

person

with:

Sole voting power

761,454

Shared voting power

Sole dispositive power

761,454

Shared dispositive power

Aggregate amount beneficially owned by each reporting person 761,454

Check if the aggregate amount in Row (9) excludes certain shares (see instructions)

Percent of class represented by amount in Row (9)

Type of reporting person (see instructions) IA

1(a) Name of issuer:  Richardson Electronics

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:

Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);

Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);

Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);

Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C 80a-8);

An investment adviser in accordance with §240.13d–1 (b)(1 )(ii)(E);

An employee benefit plan or endowment fund in accordance with §240.13d–1 (b)(1)(ii)(F);

A parent holding company or control person in accordance with §240.13d–1 (b)(1)(ii)(G);

A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

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);

A non-U.S. institution in accordance with §240.13d–1 (b)(1 )(ii)(J);

Group, in accordance with §240.13d–1 (b)(1 )(ii)(K). If filing as a non-U.S. institution in accordance with §240.13d–1 (b)(1)(ii)(J), please specify the type of institution:

Ownership

Ownership of 5 Percent or Less of a Class. If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than 5 percent of the class of securities, check the following [    ].

Ownership of More than 5 Percent on Behalf of Another Person.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.

Identification and Classification of Members of the Group.

Notice of Dissolution of Group.

Certifications