3M Co.

W. James Farrell director

Shares purchased: 6,625 Price: $114.41

Date: Aug. 22 Directly holds: 6,625

Appliance Recycling Centers Of America Inc.

Bradley Bremer officer

Exercised options: 10,000 Price: $2.38

Date: Aug. 20 Holdings: 10,000

Arctic Cat Inc.

Roger Skime officer

Exercised options: 3,800 Price: $27.69

Shares sold: 1,300 Price: $57.50

Date: Aug. 26 Directly holds: 50,851

Best Buy Co. Inc.

Allen Lenzmeier director

Shares sold: 60,000 Price: $35.04

Date: Aug. 27 Indirectly holds: 753,482

Buffalo Wild Wings Inc.

Kathleen Benning-Alberga officer

Shares sold: 3,000 Price: $108.83

Date: Aug. 22 Holdings: 11,814

Clearfield Inc..

Ronald Roth chairman

Shares purchased: 10,000 Price:

–22 $11.24–$11.45

Directly holds: 1,265,280

Digi International Inc.

Guy Jackson director

Exercised options: 7,500 Price: $8.23

–$9.51

–27 Directly holds: 12,438

Ecolab Inc.

Stephen Chazen director

Shares purchased: 2,000 Price: $91.61

Date: Aug. 27 Directly holds: 5,245

General Mills, Inc.

William Esrey director

Exercised options: 20,000 Price: $23.46

Shares sold: 9,560 Price: $49.07

Date: Aug. 21 Holdings: 115,352

Raymond Gilmartin director

Exercised options: 20,000 Price: $23.46

Shares sold: 9,500 Price: $49.38

Date: Aug. 26 Holdings: 118,961

Hmn Financial Inc.

Bradley Krehbiel president

Shares purchased: 100 Price: $7.20

Date: Aug. 22 Directly holds:77,297

Hutchinson Technology

Frank Russomanno director

Shares purchased: 2,000 Price: $3.42

Date: Aug. 27 Directly holds: 47,042

Medtronic Inc.

Richard Anderson director

Exercised options: 4,842 Price: $49.58

Date: Aug. 22 Holdings: 43,628

Hiram Dallas officer

Exercised options: 38,999 Price:

–$38.81

–$53.19

–22 Directly holds: 59,141

Shirley Ann Jackson director

Exercised options: 8,723 Price:

–$49.58

Shares sold: 8,033 Price: $52.84

Date: Aug. 21 Directly holds: 24,943

Denise O’Leary director

Exercised options: 6,052 Price: $49.58

Date: Aug. 23 Holdings: NA

Catherine Szyman officer

Exercised options: 53,418 Price:

–$50.46

Shares sold: 56,998 Price: $52.60

Date: Aug. 26 Directly holds: 21,217

Navarre Corp.

M. David Bryant director

Shares purchased: 7,300 Price:

–27 $3.09–$3.13

Shares purchased: 5,000 Price: $3.06

Date: Aug. 28 Directly holds: 3,936,980

Patterson Companies Inc.

Ann Gugino officer

Shares sold: 3,121 Price: $40.11

Date: Aug. 27 Directly holds: 33,861

Polaris Industries Inc.

William Fisher chief technology officer

Shares sold: 6,000 Price: $113.86

Date: Aug. 20 Directly holds: 25,869

Suresh Krishna officer

Exercised options: 16,000 Price: $25.99

Shares sold: 7,984 Price: $109.95

Date: Aug. 27 Directly holds: 28,967

Proto Labs Inc.

John Tumelty officer

Exercised options: 1,750 Price: $7.86

Shares sold: 1,750 Price: $68.43

Date: Aug. 21 Directly holds: NA

Silver Bay Realty Trust

Brian Taylor director

Shares purchased: 5,000 Price: $15.95

Date: Aug. 22 Directly holds: 40,449

Ronald Weiser director

Shares purchased: 10,000 Price:

–$16.26

Indirectly holds: 16,867

Tennant Co.

Chris Killingstad CEO

Exercised options: 83,100 Price:

–$20.82

–$54.91

–26 Directly holds: 100,530