Bio-Techne Corp.

Karen Ann Holbrook director

Shares sold: 1,059 Price: $121.73

Date: Sept. 6Directly holds: 914

Roger Lucas director

Shares sold: 100 Price: $120.94

Date: Sept. 8Directly holds: 1,970

Communications Systems Inc.

Bruce Blackwood officer

Shares purchased: 1,200 Price: $4.21

Date: Sept. 13Directly holds: 11,219

Curtis Allen Sampson director

Shares purchased: 10,000 Price:

Date: Sept. 6$3.94–$4.08

Directly holds: 1,095,750

Donaldson Co. Inc.

Jeffrey Noddle director

Exercised options: 14,400 Price: $22.77

Date: Sept. 11Directly holds: na

Entellus Medical Inc.

Stephen Paidosh officer

Exercised options: 25,000 Price: $1.40

Shares sold: 25,000 Price: $17.54

Date: Sept. 13Directly holds: 7,500

Graco Inc.

David Lowe officer

Exercised options: 30,000 Price: $35.90

Shares sold: 30,000 Price: $115.50

Date: Sept. 8Directly holds: 135,251

Hawkins Inc.

Steven Matthews II officer

Shares sold: 262 Price: $36.94

Date: Sept. 11Directly holds: 4,435

Hormel Foods Corp.

Steven Binder officer

Exercised options: 15,000 Price: $31.25

Shares sold: 15,000 Price: $31.23

Date: Sept. 7Directly holds: 348,762

Donald H. Kremin officer

Exercised options: 100,000 Price:

$15.49

Shares sold: 100,000 Price: $31.66

Date: Sept. 11Directly holds: 45,307

Dakota Pippins director

Shares sold: 4,000 Price: $31.60

Date: Sept. 8Directly holds: 92,377

Northern Technologies International Corp.

Richard Nigon director

Exercised options: 1,500 Price: $10.25

Date: Sept. 7Directly holds: na

SurModics Inc.

Joseph Stich officer

Shares sold: 1,000 Price: $27.28

Date: Sept. 11Directly holds: 39,989

Tactile Systems Technology Inc.

Bryan Rishe officer

Shares sold: 1,500 Price: $32.77

Date: Sept. 5Directly holds: 111,307

UnitedHealth Group

Gail Wilensky director

Exercised options: 5,600 Price:

$47.90–$48.14

Shares sold: 5,600 Price: $199.49

Date: Sept. 5Directly holds: 55,834

Winmark Corp.

Kirk MacKenzie director

Shares sold: 12,519 Price:

Date: Aug. 30–Sept. 6$131.46–$131.97

Indirectly holds: 31,513

Shares sold: 1,071 Price: $131.21

Date: Sept. 7Indirectly holds: 31,513

Xcel Energy Inc.

Daniel Yohannes director

Shares purchased: 1,000 Price: $49.53

Date: Sept. 5Directly holds: 1,000