Ameriprise Financial

James Cracchiolo CEO

Exercised options: 37,994 Price: $37.23

Shares sold: 70,920 Price:

–20 $136.19–$136.21

Directly holds: 212,610

Apogee Enterprises

Joseph Puishys CEO

Exercised options: 69,516 Price: $8.34

Shares sold: 69,516 Price:

–24 $44.11–$44.31

Directly holds: 247,261

Donaldson Co. Inc.

William Cook CEO

Exercised options: 106,000 Price:

$16.40

Shares sold: 71,004 Price: $37.90

Date: March 18 Holdings: 1,294,502

Mary Perushek officer

Shares sold: 2,000 Price: $38.31

Date: March 20 Directly holds: 46,674

Famous Dave'S Of America Inc.

SAb Capital Advisors shareholder

Shares sold: 10,000 Price: $29.21

Date: March 20 Indirectly holds: 701,506

Insignia Systems Inc.

AIr T Inc. major shareholder

Shares purchased: 14,100 Price:

–25 $2.88–$3.03

Indirectly holds: 1,389,280

Otter Tail Corp.

Charles Macfarlane president

Exercised options: 3,000 Price: $24.93

Date: March 23 Holdings: 95,947

Proto Labs Inc.

John Goodman director

Exercised options: 500 Price: $4.27

Shares sold: 500 Price: $69.40

Date: March 19 Directly holds: 7,048

Target Corp.

Roxanne Austin director

Exercised options: 6,365 Price: $48.88

Shares sold: 9,081 Price: $81.66

Date: March 20 Directly holds:

Toro Co.

Janet Cooper director

Exercised options: 6,556 Price: $21.30

Shares sold: 6,556 Price: $68.43

Date: March 19 Directly holds: 32,479

Michael Drazan officer

Exercised options: 14,000 Price: $22.45

Shares sold: 14,000 Price: $68.15

Date: March 19 Directly holds: 32,158

Darren Redetzke officer

Shares sold: 2,000 Price: $68.14

Date: March 18 Directly holds: 24,818

Unitedhealth Group

William Ballard Jr. director

Exercised options: 10,000 Price: $52.81

Shares sold: 10,000 Price: $120.48

Date: March 18 Directly holds: 67,047