Filing Details

1.

Names of Reporting Persons

I.R.S. Identification Nos. of Above Persons (Entities Only)

Robert W. Baird & Co. Incorporated

39-6037917

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

Wisconsin

5.  Sole Voting Power

5,463

6.  Shared Voting Power

0

7.  Sole Dispositive Power

0

8.  Shared Dispositive Power

5,463

9.

Aggregate Amount Beneficially Owned by Each Reporting Person

5,463

10.

Check if the Aggregate Amount in Row (9) Excludes Certain Shares

      (See Instructions)   [ ]

11.

Percent of Class Represented by Amount in Row (9)

3.6%

12.

Type of Reporting Person (See Instructions)

IA

(a)

Name of Issuer:

Union Electric Company

(b)

Address of Issuer’s Principal Executive Offices:

1901 Chouteau Avenue

St. Louis, Missouri  63103

(a)

Name of Person Filing:

Robert W. Baird & Co. Incorporated

(b)

Address of Principal Business Office or, if none, Residence:

777 East Wisconsin Avenue

Milwaukee, Wisconsin 53202

(c)

Citizenship:

Wisconsin corporation

(d)

Title of Class of Securities:

$4.00 Series Cumulative Preferred Stock

(e)

CUSIP Number:

906548409

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 (15 U.S.C. 80a-8).

(e)

[X]

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 plan, in accordance with §240.13d-1(b)(1)(ii)(G).  (Note:  See Item 7).

(h)

[ ]

A savings association 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)

[ ]

Group, in accordance with §240.13d-1(b)(1)(ii)(J).

Item 4.

Ownership.

(a)

Amount Beneficially Owned:

5,463. All 5,463 Shares of $4.00 Series Cumulative Preferred Stock (“Shares”) are ultimately owned by certain individual and institutional clients for which Robert W. Baird & Co. Incorporated (“Baird”) serves as investment advisor.   Baird may be deemed to beneficially own such Shares within the meaning of Rule 13d-3 of the Securities Exchange Act of 1934, as amended (the “Act”), by virtue of the investment discretion and voting authority granted to Baird by such clients over such Shares.  The investment discretion and voting authority granted to Baird may be revoked at any time.

 (b)

Percent of Class:

3.6%.  The percentage was calculated based upon 150,000 Shares of $4.00 Series Cumulative Preferred Stock outstanding as reported by the Issuer in its Annual Report on Form 10-K for the year ended December 31, 2019.

(c)

Number of shares as to which such person has:

(i)

Sole power to vote or to direct the vote

5,463.

(ii)

Shared power to vote or to direct the vote

0.

 (iii)

Sole power to dispose or to direct the disposition of

0.

(iv)

Shared power to dispose or to direct the disposition of

5,463.

Item 10.

Certification.

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.

Date

/s/ Paul L. Schultz

Paul L. Schultz, Secretary & General Counsel

Name/Title