Allete Inc.

Alan R. Hodnik CEO

Shares sold: 4,000Price: $75.70

Date: Sept. 13Directly holds: 67,742

ANI Pharmaceuticals

Robert W. Schrepfer officer

Exercised options: 26,688Price: $6.60

Date: Sept. 11Directly holds: na

Donaldson Co. Inc.

Amy C. Becker officer

Exercised options: 3,000Price: $15.87

Date: Sept. 13Directly holds: na

Tod E. Carpenter CEO

Exercised options: 35,600Price:

Date: Sept. 17$17,28-$21.20

Directly holds: na

Richard Brent Lewis officer

Exercised options: 6,000Price:

$15,87–$21.14

Shares sold: 3,209Price : $58.99

Date: Sept. 14Directly holds: 7,977

Wim Vermeersch officer

Exercised options: 21,500Price:

Date: Sept. 12-17$29.07–$57.05

Directly holds: na

Ecolab Inc.

Douglas M. Baker Jr. CEO

Exercised options: 120,075Price:

Date: Sept. 18Directly holds: na

Angela M. Busch officer

Exercised options: 2,000Price: $36.63

Date: Sept. 12Directly holds: na

Thomas W. Handley president

Exercised options: 42,3000Price:

Date: Sept. 18$55.60

Directly holds: na

Michael A. Hickey officer

Exercised options: 25,000Price: $55.60

Shares sold: 32,468Price: $155.80

Date: Sept. 13Directly holds: 43,633

ECOLAB INC. (cont.)

Daniel J. Schmechel CFO

Exercised options: 14,500Price: $48.06

Date: Sept. 18Directly holds: na

Hormel Foods Corp.

Deanna T. Brady officer

Exercised options: 48,000Price: $14.80

Shares sold: 48,000Price: $41.05

Date: Sept. 17Directly holds: 45,809

Terrell K. Crews director

Exercised options: 16,000Price: $7.60

Shares sold: 6,630Price: $42.07

Date: Sept. 14Directly holds: 99,397

Dakota A. Pippins director

Shares sold: 1,750Price: $39.59

Date: Sept. 19Directly holds: 91,797

Nortech Systems Inc.

David B. Kunin director and owner

Shares purchased: 490Price: $4

Date: Sept. 13Directly holds:

1,376,036

Pentair Plc

Glynis A. Bryan director

Exercised options: 17,133Price: $16.51

Shares sold: 17,133Price: $45

Date: Sept. 18Directly holds: 17,982

Proto Labs Inc.

John B. Goodman director

Exercised options: 1,113Price:

$62.68–$70

Shares sold: 1,113Price: $162.95

Date: Sept. 14Directly holds: 12,078

Sps Commerce Inc.

Martin J. Leestma director

Exercised options: 21,336Price:

$12–$48.66

Shares sold: 5,136Price: $99.35

Date: Sept. 17Directly holds: 20,935

Tactile Systems Technology Inc.

Robert J. Folkes COO

Exercised options: 2,482Price: $0.73

Shares sold: 2,482Price: $64.73

Date: Sept. 18Directly holds: 113,236

Gerald R. Mattys CEO

Exercised options: 21,098Price: $1.55

Shares sold: 21,098Price:

Date: Sept. 17$65.34–$68.46

Directly holds: 294,129

Bryan F. Rishe officer

Shares sold: 3,000Price:

Date: Sept. 14$68.63–$69.30

Directly holds: 73,328

Tile Shop Holdings Inc.

Peter J. Jacullo III owner

Shares purchased: 41,127Price:

Date: Sept. 13-14$7.14–$7.23

Indirectly holds: 5,440,172

Unitedhealth Group

Richard Burke Sr. director

Shares sold: 30,000Price:

Date: Sept. 12-13$263.41–$264.90

Directly holds: 1,796,112

Michele J. Hooper director

Exercised options: 5,000Price: $25,16

Shares sold: 5,000Price: $264.86

Date: Sept. 13Directly holds: 32,865