Best Buy Co. Inc.

Corie S. Barry,  CFO

Exercised options: 3,700 Price: $41.19

Date: Aug. 3 Directly holds: na

C.H. Robinson Worldwide Inc.

Michael John Short,  officer

Exercised options: 4,527 Price:

–$74.57

Shares sold: 4,527 Price: $96.12

Date: Aug. 6 Directly holds: 14,392

ECOLAB INC.

Roberto Inchaustegui,  officer

Exercised options: 10,600 Price: $48.06

Shares sold: 10,600 Price: $145.71

Date: Aug. 2 Directly holds: 24,231

David W. Maclennan,  director

Shares purchased: 500 Price: $146.40

Date: Aug. 2 Directly holds: 9,563

Michael McCormick,  general counsel

Exercised options: 13,400 Price: $55.60

Shares sold: 13,400 Price: $146.45

Date: Aug. 3 Indirectly holds: 51,528

GENERAL MILLS Inc.

Kofi A. Bruce,  officer

Shares sold: 2,200 Price: $47.28

Date: Aug. 3 Directly holds: 19,813

INSIGNIA SYSTEMS INC.

AIR T Inc., beneficial owner

Shares purchased: 25,000 Price:

–$1.92

Directly holds: 3,501,014

Loren A. Unterseher, director

Shares purchased: 9,550 Price:

Date: Aug. 3 $1,90-$1.92

Directly holds: 19,550

SPS Commerce Inc.

James J. Frome, COO

Exercised options: 3,280 Price: $30.89

Shares sold: 3,280 Price: $90

Date: Aug. 7 Directly holds: 28,612

TCF Financial Corp.

Brian W. Maass, CFO

Shares sold: 12,236 Price: $25.74

Date: Aug. 2 Directly holds: 89,471

TACTILE SYSTEMS TECHNOLOGY INC.

Robert J Folkes, COO

Exercised options: 3,043 Price: $1.55

Shares sold: 3,043 Price: $47.54

Date: Aug. 1 Directly holds: 118,236

UnitedHealth Group

William C. Ballard Jr., director

Exercised options: 10,000 Price:

–$27.59

Shares sold: 10,000 Price:

–$258.84

Directly holds: 72,172

Richard Burke Sr., director

Shares sold: 15,000 Price: $254.79

Date: Aug. 1 Directly holds: 1,826,112

WINMARK CORP.

Ronald G. Olson, beneficial owner

Shares sold: 8,000 Price:

–$147.55

Directly holds: 484,863