ECOLAB Inc.

Michael C. McCormick general counsel

Exercised options: 7,210 Price: $119.12

Date: Dec. 15 Directly holds: na

Elizabeth Simermeyer officer

Shares sold: 515 Price: $221.38

Date: Dec. 11 Directly holds: 7,827

Fastenal Co.

Sheryl A. Lisowski officer, treasurer

Exercised options: 10,458 Price: $23-$27.50

Shares sold: 7,114 Price: $49.59-$49.63

Date: Dec. 15 Directly holds: 5,812

Graco Inc.

Dale D. Johnson director

Exercised options: 54,000 Price: $19.58

Shares sold: 54,000 Price: $68.50

Date: Dec. 10-11 Directly holds: 222,316

IntriCon Corp.

Michael P. Geraci officer

Shares sold: 7,500 Price: $16.83

Date: Dec. 14 Directly holds: 43,385

Nicholas A. Giordano director

Exercised options: 942 Price: $4.53

Date: Dec. 8 Directly holds: na

Image Sensing Systems

Joseph Patrick Daly director

Shares purchased: 19,550 Price:

Date: Dec. 8-10 $4.26-$4.43

Directly holds: 89,108

Medtronic PLC

Karen L. Parkhill CFO

Shares sold: 670 Price: $114.33

Date: Dec. 15 Indirectly holds: 88,712

Northern OIl AND GAS INC.

Bahram Akradi director

Shares sold: 260,000 Price: $9.05-$9.60

Date: Dec. 9-10 Directly holds: 1,693,989

TENNANT CO.

Hans Chris Killingstad CEO

Exercised options: 3,270 Price: $40.21

Shares sold: 3,297 Price: $70

Date: Dec. 8-9 Directly holds: 153,236

Unitedhealth Group

Richard Burke Sr. director

Shares sold: 12,500 Price: $336.50-$349.78

Date: Dec. 8-11 Indirectly holds: 1,498,487