AETRIUM INC.

archer advisors major shareholder

Shares purchased: 7,600 Price: $0.72

Date: Feb. 28 Indirectly holds: 489,532

ALLETE INC.

mark schober chief financial officer

Exercised options: 17,366 Price:

$37.76-$39.10

Shares sold: 17,366 Price: $46.90

Date: March 1 Directly holds: 36,805

ALLiant techsystems inc.

michael kahn officer

Shares sold: 2,646 Price: $66.30-$67.10

Date: Feb. 28 Directly holds: 25,905

Buffalo Wild Wings Inc.

Kathleen Benning-Alberga officer

Exercised options: 300 Price: $9.08

Date: Feb. 25 Directly holds: NA

JOHN MAGGARD director

Exercised options: 1,334 Price: $6.38

Date: Feb. 26 Directly holdings: NA

Clearfield Inc.

CHARLES HAYSSEN director

Shares purchased: 10,742 Price: $5.50

Date: Feb. 25-26 Directly holds: 88,848

DATALINK CORP.

MICHAEL O’GRADY officer

Shares sold: 4,790 Price: $10.50

Date: March 4 Directly holds: 117,473

Deluxe Corp.

LAURA RADEWALD officer

Exercised options: 16,778 Price:

Date: Feb. 28 $18.28-$25.59

Shares sold: 7,000 $39.48

Date: March 1 Directly holds: 9,778

TRACEY ENGELHARDT officer

Exercised options: 3,232 Price:

Date: Feb. 26 $18.28- $25.59 Holdings: NA

DONALD McGRATH director

Shares sold: 8,000 Price: $39.63

Date: Feb. 25 Directly holds: 35,474

Enteromedics inc.

anthony jansz director

Shares purchased: 150,000 Price: $0.95

Date: Feb. 27 Indirectly holds: 175,000

Fair Isaac Corp.

Richard Deal officer

Exercised options: 12,989 Price: $35.50

Shares sold: 12,989 Price: $44.57

Date: Feb. 28 Directly holds: 34,462

GENERAL MILLS INC.

JERALD YOUNG officer

Exercised options: 5,084 Price: $23.49

Shares sold: 5,084 Price: $46

Date: Feb. 25 Directly holds: 46,337

Hmn Financial Inc.

Bradley Krehbiel president

Shares sold: 1,000 Price: $5.20

Date: March 5 Directly holds: 86,728

lawrence mcgraw officer

Shares sold: 500 Price: $5.31

Date: Feb. 27 Directly holds: 33,400

Hormel foods Corp.

dakota pippins director

Exercised options: 16,000 Price:

$16.77-$18.96

Shares sold: 16,000 Price: $37.41 Date: March 1 Directly holds: 44,015

IMAGE SENSING SYSTEMS

Kris Tufto CEO

Shares purchased: 200 Price: $5.39

Date: March 1 Directly holds: 1,800

LIFE TIME FITNESS Inc.

JACK EUGSTER director

Shares purchased: 3,000 Price: $41.95

Date: Feb. 26 Directly holds: 21,009

ERIC BUSS officer

Shares sold: 66,111 Price: $41.55-$41.90

Date: March 1-4 Directly holds: 164,022

MICHAEL ROBINSON CFO

Shares sold: 38,185 Price: $41.55-$41.90

Date: March 1-4 Directly holds: 196,954

JEFFREY ZWIEFEL officer

Shares sold: 23,854 Price: $41.55-$41.90

Date: March 1-4 Directly holds: 165,057

PATTERSON COMPANIES INC.

Paul Guggenheim officer

Exercised options: 3,124 Price: $19.97

Shares sold: 3,124 Price: $36.26

Date: Feb. 28 Directly holds: 97,235

POLARIS INDUSTRIES INC.

RAYMOND MARK SCHRECK director

Exercised options: 3,000 Price: $24.61

Shares purchased: 3,000 Price: $87.50

Date: Feb. 25 Directly holds: 480

PROTO LABS INC.

Bradley cleveland CEO

Shares sold: 20,000 Price: $44.05-$46.03

Date: March 1 Directly holds: 965,182

Edward bolton officer

Exercised options: 10,500 Price: $16

Shares sold: 10,710 Price: $46.13

Date: Feb. 27 Directly holds: 900

RIMAGE CORP.

SHErman black CEO

Shares purchased: 10,000 Price:

$6.80-$6.83

Date: March 4 Directly holds: 83,200

C.H. Robinson WORLDWIDE

Chris o’brien officer

Shares sold: 13,300 Price: $56.16

Date: March 4 Directly holds: 63,657

Rochester medical corp.

robert anglin officer

Exercised options: 4,000 Price: $4.63

Shares sold: 4,000 Price: $14.70

Date: March 1 Directly holds: 10,600

MARTYN SHOLTIS officer

Exercised options: 52,500 Price:

Date: Feb. 28-March 1 $4.63-$4.70

Shares sold: 16,500 Price: $14.75-$14.80

Date: Feb. 28-March 1 Directly holds:

40,000

SILVER BAY REALTY TRUST

David Miller CEO

Shares purchased: 10,000 Price: $19.47

Date: March 4 Directly holds: 22,500

TENNANT CO.

andrew eckert officer

Shares sold: 11,107 Price:

Date: Feb. 25-26 $45.89-$47.34

Directly holds: 14,392

thomas Dybsky officer

Exercised options: 11,000 Price: $20.82

Shares sold: 11,000 Price: $47.50

Date: Feb. 25 Directly holds: 11,709

U.S. BANCORP

jerry levin director

Exercised options: 1,535 Price: $20.32

Date: Feb. 27 Directly holds: NA

UNITEDHEALTH GROUP INC.

gail boudreaux officer

Exercised options: 66,292 Price:

Date: Feb. 25 $29.74-$33

Shares sold: 85,986 Price:

Date: Feb. 25-26 $53.18-$54.45

Directly holds: 170,820

LARRY RENFRO officer

Shares purchased: 84,114 Price: $52.89

Date: Feb. 26 Directly holds: 167,060

valspar corp.

john ballbach director

Shares purchased: 1,246 Price: $60

Date: Feb. 25 Directly holds: 2,682