Ameriprise Financial

David K. Stewart officer

Exercised options: 11,874 Price: $37.23

Shares sold: 4,817 Price: $171.51

Date: Dec. 22 Directly holds: 18,110

Insignia Systems Inc.

aIr T Inc. major shareholder

Shares purchased: 50,000 Price:

–27 $1.21–$1.24

Directly holds: 1,897,103

Insignia Systems Inc.

Sardar Biglari major shareholder

–$1.25

–28 Indirectly holds:

1,983,438

Tactile Systems Technology Inc.

Bryan Rishe officer

Shares sold: 1,500 Price: $29.54

Date: Dec. 20 Directly holds: 100,807

Unitedhealth Group

David Wichmann CEO

Exercised options: 203,642 Price:

Date: Dec. 21 $33.94

Directly holds: na

Winmark Corp.

Paul Reyelts director

Exercised options: 10,250 Price:

–$82.72

Directly holds: na