X0304 4 2012-02-24 0000009984 BARNES GROUP INC B 0001175893 MANGUM MYLLE H BARNES GROUP INC. 123 MAIN STREET BRISTOL CT 06010 1 0 0 0 Common Stock 2012-02-24 4 S 0 6000 27.9337 D 31350.5292 D Common Stock 5144.0762 I By Non-Employee Director Deferred Stock Plan The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.91 to $27.97, inclusive. The reporting person undertakes to provide to Barnes Group Inc., any security holder of Barnes Group Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (1) to this Form 4. Includes a balance of 1810 Restricted Stock Units granted 2/8/11 and 3046 granted 2/8/12, that are subject to forfeiture if certain events occur. Monique B. Marchetti, pursuant to a Power of Atty 2012-02-27