3M Corp.

Michael G. Vale, officer

Shares sold: 6,250Price: $159.165—$159.19

Date: Feb. 18Directly holds: 52,604

Ameriprise Financial Inc.

Walter Stanley Berman, CFO

Exercised options: 54,910Price: $107.61

Shares sold: 52,160Price: $176.2—$177.77

Date: Feb. 18Directly holds: 18,100

James M. Cracchiolo, CEO

Exercised options: 169,313Price: $107.61

Date: Feb. 18

Shares sold: 141,618Price: $177.46 —$178.59

Date: Feb. 14—19Directly holds: 235,172

William F. Truscott, officer

Exercised options: 54,910Price: $107.61

Shares sold: 11,998Price: $177.88

Date: Feb. 18Indirectly holds: 75,486

Bio-Techne Corp.

John L. Higgins, director

Exercised options: 5,000Price: $61.46

Shares sold: 5,000Price: $205.23

Date: Feb. 13—14Directly holds: 4,021

Fastenal Co.

Daniel L. Florness, CEO

Exercised options: 7,500Price: $27

Shares sold: 7,500Price: $38.20

Date: Feb. 12Directly holds: 229,038

H.B. Fuller Co.

Timothy J. Keenan, general counsel

Shares sold: 4,068Price: $48.74

Date: Feb. 12Directly holds: 22,478

Graco Inc.

William J. Carroll, director

Exercised options: 18,000Price: $19.84

Shares sold: 18,000Price: $56.11

Date: Feb. 18Directly holds: 56,644

Mark D. Eberlein, officer

Exercised options: 14,000Price: $19.58

Shares sold: 14,000Price: $56.05

Date: Feb. 18Directly holds: 4,931

Jody H. Feragen, director

Exercised options: 9,065Price: $23.60

Date: Feb. 13Directly holds: na

Angela F. Wordell, officer

Exercised options: 4,230Price: $14.24

Shares sold: 2,120Price: $56.95

Date: Feb. 19Directly holds: 13,197

Insignia Systems Inc.

Funicular Fund L.P., beneficial owner

Shares sold: 7,780Price: $0.78—$0.79

Date: Feb. 13—14Directly holds: 1.333.647

NVE Corp.

Curt A. Reynders, CFO

Shares sold: 1,429Price: $75.67

Date: Feb. 14Directly holds: 2,871

C.H. Robinson Worldwide

Michael Castagnetto, officer

Shares sold: 983Price: $72.03

Date: Feb. 18Directly holds: 4,457

Sleep Number Corp.

Suresh Krishna, officer

Exercised options: 5,470Price: $19.38

Date: Feb. 12Directly holds: na

SPS Commerce Inc.

Archie C. Black, CEO

Exercised options: 20,000Price: $24.04

Shares sold: 20,000Price: $60.04—$60.22

Date: Feb. 13—14Directly holds: 138,527

James J. Frome, COO

Exercised options: 36,908Price:

$24.04—$33.55

Shares sold: 36,908Price: $60.05—$62.07

Date: Feb. 13—14Directly holds: 49,163