PL Capital Advisors SC 13D HAWTHORN BANCSHARES / PL Capital Advisors ownership change

Exhibit 99.1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, the undersigned agree to the joint filing on behalf of each of them of a Schedule 13D (including any and all amendments thereto) with respect to the common stock, $1.00 par value, of Hawthorn Bancshares, Inc., and further agree that this Joint Filing Agreement shall be included as an Exhibit to such joint filing(s).

The undersigned further agree that each party hereto is responsible for the timely filing of such Schedule 13D and any amendments thereto, and for the accuracy and completeness of the information concerning such party contained therein; provided, however, that no party is responsible for the accuracy or completeness of the information concerning any other party, unless such party knows or has reason to believe that such information is inaccurate.

This Joint Filing Agreement may be signed in counterparts with the same effect as if the signature on each counterpart were upon the same instrument.

IN WITNESS WHEREOF, the undersigned have executed this Joint Filing Agreement as of February 17, 2022.

PL CAPITAL ADVISORS, LLC

By:/s/ John W. Palmer/s/ Richard J. Lashley

      John W. Palmer                 Richard J. Lashley

      Managing Member            Managing Member

By:/s/ John W. Palmer

      John W. Palmer

By:/s/ Richard J. Lashley

      Richard J. Lashley