business

AETRIUM INC.

archer advisors major shareholder

Shares purchased: 7,600 Price: $0.72

Date: Feb. 28 Indirectly holds: 489,532

ALLETE INC.

mark schober chief financial officer

Exercised options: 17,366 Price:

$37.76-$39.10

Shares sold: 17,366 Price: $46.90

Date: March 1 Directly holds: 36,805

ALLiant techsystems inc.

michael kahn officer

Shares sold: 2,646 Price: $66.30-$67.10

Date: Feb. 28 Directly holds: 25,905

Buffalo Wild Wings Inc.

Kathleen Benning-Alberga officer

Exercised options: 300 Price: $9.08

Date: Feb. 25 Directly holds: NA