ANI Pharmaceuticals INC.

Robert W. Schrepfer, officer

Exercised options: 7,145Price: $28.76–$33

Shares sold: 11,796Price: $64.43–$64.50

Directly holds: 47,842

Best Buy Co. Inc.

Richard M. Schulze, beneficial owner

Shares sold: 482,557Price: $68.87–$68.89

Date: March 11Indirectly holds: 37,489,340

Mathew Watson, officer

Shares sold: 380Price: $68.79

Date: March 13Directly holds: 20,206

Canterbury Park Holding Corp.

Randall D. Sampson, CEO

Exercised options: 4,722Price: $14.10

Date: March 8Directly holds: na

Donaldson Co. Inc.

Douglas A. Milroy, director

Shares purchased: 560Price: $49.05

Date: March 13Indirectly holds: 6,159

Ecolab Inc.

David W. MacLennan, director

Shares purchased: 1,000Price: $171.05

Date: March 6Indirectly holds: 10,954

Victoria J. Reich, director

Exercised options: 4,200Price: $51.74

Shares shared: 4,200Price: $170.07

Date: March 7Indirectly holds: 19,267

GRACO INC.

Jeffrey P. Johnson, officer

Exercised options: 54,000Price: $14.24

Shares sold: 54,000Price: $47.20

Date: March 8–11Directly holds: 43,437

Tactile Systems Technology Inc.

Robert J. Folkes, COO

Exercised options: 5,000Price: $0.96

Shares sold: 5,000Price: $61.72–$70.36

Date: March 12-14Directly holds: 109,154

Tennant Co.

William F. Austen, director

Exercised options: 2,000Price: $19.54

Date: March 7Directly holds: na

Toro Co.

Robert C. Buhrmaster, director

Exercised options: 9,000Price:

Date: March 12–13$67.23–$67.43

Directly holds: 23,091

UnitedHealth Group inc.

Richard Burke Sr., director

Shares sold: 5,000Price: $245.01

Date: March 12Indirectly holds:

1,761,872

Winmark Corp.

Ronald G. Olson, beneficial owner

Shares sold: 900Price: $171

Date: March 12Directly holds: 472,298

XCEL ENERGY CORP.

Darla Figoli, officer

Shares sold: 9,000Price: $56.40

Date: March 12Directly holds: 50,406

Benjamin Fowke III, CEO

Shares sold: 75,000Price: $55.13

Date: March 6Directly holds: 660,951

Judith M. Poferl, officer

Shares sold: 8,953Price: $55.86

Date: March 11Directly holds: 7,950