3M Co.

Joaquin Delgado, officer

Shares sold: 4,897Price:

Date: Feb. 15$207.30–$207.33

Directly holds: 23,746

Digi International Inc.

Jon A. Nyland, officer

Exercised options: 64,898Price:

$7.40–$10.81

Shares sold: 91,212Price:

Date: Feb. 13-20$13.30–$13.47

Directly holds: 17,052

Ecolab Inc.

Leslie S. Biller, director

Exercised options: 5,200Price: $38.63

Date: Feb. 15Directly holds: na

Fastenal Co.

Sheryl A. Lisowski, officer, treasurer

Exercised options: 10,000Price: $42

Shares sold: 10,000Price: $62.50

Date: Feb. 14Directly holds: 1,164

John L. Soderberg, officer

Exercised options: 7,500Price: $42

Shares sold: 7,500Price: $63

Date: Feb. 15Directly holds: 5,741

H.B. Fuller Co.

Robert J. Martsching, officer

Shares sold: 3,215Price: $48.86

Date: Feb. 15Directly holds: 9,950

Graco Inc.

John Kevin Gilligan, director

Exercised options: 21,300Price: $15.03

Shares sold: 21,300Price: $46.48

Date: Feb. 19Directly holds: 46,101

Northern Oil And Gas

Crestview Partners III, owner

Shares sold: 846,215Price:

Date: Feb. 15-21$2.51–$2.55

Indirectly holds: 38,464,048

C.H. Robinson Worldwide Inc.

Angela K. Freeman, officer

Shares sold: 2,914Price: $91.01

Date: Feb. 14Directly holds: 32,894

Sleep Number Corp.

Kevin Brown, officer

Shares sold: 3,500Price: $43.41

Date: Feb. 19Directly holds: 9,892

Andrew P. Carlin, officer

Exercised options: 34,190Price:

$17.77–$33.32

Shares sold: 34,190Price: $42.42

Date: Feb. 19Directly holds: 41,554

Patricia Dirks, officer

Exercised options: 6,600Price: $17.36

Shares sold: 10,805Price: $42–$43

Date: Feb. 14-15Directly holds: 30,708

Shelly Radue Ibach, CEO

Exercised options: 7,500Price: $0.79

Date: Feb. 20

Shares sold: 25,112Price: $42–$44

Date: Feb. 14-21Directly/indirectly

holds: 112,184

Suresh Krishna, officer

Shares sold: 14,025Price: $42.62

Date: Feb. 19Directly holds: 26,750

Brenda Joyce Lauderback, director

Exercised options: 5,000Price: $9.95

Shares sold: 7,058Price:

Date: Feb. 19$42.89–$42.95

Directly holds: 32,954

Michael A. Peel, director

Exercised options: 6,863Price: $6.23

Date: Feb. 15Directly holds: na

Joseph Saklad, chief tech. officer

Exercised options: 6,862Price:

$23.61–$33.32

Shares sold: 5,302Price: $43.63

Date: Feb. 20Directly holds: 51,640

SPS Commerce Inc.

Archie C. Black, CEO

Shares sold: 7,982Price:

Date: Feb. 14–15$102.87–$108.48

Directly holds: 82,342

SPS Commerce (cont.)

James J. Frome, COO

Exercised options: 9,107Price: $39.01

Shares sold: 19,670Price:

Date: Feb. 13$99.83–$112.52

Directly holds: 18,049

Kimberly K. Nelson, CFO

Shares sold: 7,370Price:

Date: Feb. 12–15$94–$107.89

Directly holds: 50,955

Sven A. Wehrwein, director

Exercised options: 2,672Price: $27.55

Shares sold: 2,672Price:

Date: Feb. 19–20$108.32–$110

Directly holds: 6,415

Surmodics Inc.

Joseph J. Stich, officer

Shares sold: 2,000Price:

Date: Feb. 15$54.44–$56.30

Directly holds: 54,494

Tactile Systems Technology Inc.

Gerald R. Mattys, CEO

Shares sold: 50,000Price:

Date: Feb. 14-15$69.50–$71.43

Directly holds: 289,607

Bryan F. Rishe, officer

Shares sold: 3,000Price: $69.44

Date: Feb. 15Directly holds: 54,143