JOINT FILING UNDERTAKINGJoint Filing Undertaking • February 7th, 2020 • Bergstrom Edith H.
The undersigned, being authorized thereunto, hereby execute this agreement as an exhibit to this Schedule 13G to evidence the agreement of the below-named parties, in accordance with rules promulgated pursuant to the Securities Exchange Act of 1934, to file this Schedule, as it may be amended, jointly on behalf of each of such parties.
