HORMEL FOODS CORP.

Larry L. Vorpahl officer

Exercised options: 180,000 Price: $9.56

Shares sold: 180,000 Price: $34.21

Date: April 3 Directly holds: 106,948

INSIGNIA SYSTEMS Inc.

Air T Inc. beneficial owner

Shares purchased: 56,198 Price:

Date: March 28-April 4 $1.55-$1.65

Directly holds: 3,391,014

SLEEP NUMBER CORP.

Michael A. Peel director

Exercised options: 4,250 Price: $2.97

Date: March 29 Directly holds: na

SLEEP NUMBER CORP.

Mark A. Kimball officer

Shares sold: 8,000 Price: $35.12

Date: April 2 Directly holds: 43,271

Surmodics Inc.

Timothy J. Arens officer

Exercised options: 13,262 Price:

Date: March 27 $20.37-$22.58

Directly holds: na

Charles W. Olson officer

Exercised options: 47,347 Price:

Date: March 27-28 $12.40­-$22.58

Directly holds: na

Susan E. Knight director

Exercised options: 11.450 Price: $12.40

Date: March 29 Directly holds: na

Target Corp.

John J. Mulligan officer

Exercised options: 118,373 Price:

Price: $48.88-$55.46

Shares sold: 118,373 Price: $69.37

Date: April 3 Directly holds: 127,295

UNITEDHEALTH GROUP

Richard Burke Sr. director

Exercised options: 5,0000 Price: $36.25

Date: March 29 Directly holds: na