Digi International Inc.

Ahmed Nawaz director

Exercised options: 20,513 Price: $7.88

Shares sold: 20,513 Price:

–Dec. 4 $11.21–$11.91

Directly holds: 146,564

Ecolab Inc.

Leslie S. Biller director

Shares sold: 2,811 Price: $160.40

Date: Nov. 30 Directly holds: 54,381

Fastenal Co.

Michael John Dolan director

Shares purchased: 5,000 Price: $60

Date: Dec. 3 Directly holds: 15,000

Hormel Foods Corp.

Thomas R. Day officer

Exercised options: 80,000 Price: $12.48

Shares sold: 48,596 Price: $45.54

Date: Dec. 4 Directly holds: 152,144

Susan K. Nestegard director

Exercised options: 21,232 Price:

–$9.78

Shares sold: 4,517 Price: $45.52

Date: Dec. 4 Directly holds: 96,386

James M. Splinter officer

Exercised options: 48,000 Price: $9.56

Shares sold: 48,000 Price: $44.98

Date: Dec. 3 Directly holds: 117,868

Intricon Corp.

Mark Stephen Gorder CEO

Exercised options: 20,000 Price: $4.69

Date: Dec. 4 Directly holds: na

MTS Systems Corp.

Jeffrey A. Graves CEO

Shares purchased: 2,000 Price: $45.98

Date: Nov. 28 Directly holds: 53,692

Steven B. Harrison officer

Shares purchased: 521 Price: $47.39

Date: Nov. 29 Directly holds: 3,752

Michael V. Schrock director

Shares purchased: 9,400 Price:

–Dec. 3 $49.27–$51.32

Directly holds: 18,430

NVE Corp.

Curt A. Reynders CFO

Shares sold: 2,075 Price: $95.15

Date: Nov. 30 Directly holds: 5,500

Pentair PLC

T. Michael Glenn director

Exercised options: 17,133 Price: $16.51

Shares sold: 17,133 Price: $43.40

Date: Dec. 3 Directly holds: 16,869

Surmodics Inc.

Gary R. Maharaj CEO

–$60.38

Date: Dec. 3 Directly holds: 179,867

Tactile Systems Technology Inc.

Robert J. Folkes COO

Exercised options: 26,233 Price:

–$1.55

Shares sold: 26,233 Price:

–Dec. 3 $52.58–$56.27

Directly holds: 113,236

Tile Shop Holdings Inc.

Peter J. Jacullo III director/owner

Shares purchased: 70,000 Price:

–Dec. 4 $5.79–$6

Indirectly holds: 5,717,866

Peter H. Kamin director

Shares purchased: 132,993 Price:

–Dec. 4 $5.82–$5.94

Directly/indirectly holds: 1,063,823

UnitedHealth Group

Richard Burke Sr. director

Shares sold: 6,090 Price: $281.72

Date: Nov. 28 Directly holds: 1,797,584

Stephen J. Hemsley officer, director

Exercised options: 169,683 Price:

Date: Nov. 30 $29.74

Directly holds: na

Gail R. Wilensky director

Exercised offers: 5,880 Price:

–$29.74

Shares sold: 5,880 Price:

–$279.81

Date: Nov. 28 Directly holds: 59,444

Winmark Corp.

Brett D. Heffes CEO

Exercised offers: 22,163 Price:

–$66.29

Shares sold: 2,000 Price:

–29 $150.55–150.61

Directly holds: 121,700