X0306 4 2017-05-02 0000009984 BARNES GROUP INC B 0001453850 STEPHENS CHRISTOPHER J BARNES GROUP INC. 123 MAIN STREET BRISTOL CT 06010 0 1 0 0 SVP, Finance and CFO Common Stock 2017-05-02 4 M 0 13600 26.59 A 105266.13 D Common Stock 2017-05-02 4 S 0 12500 54.82 D 92766.13 D Common Stock 2017-05-02 4 S 0 1100 55.52 D 91666.13 D Common Stock 1924.27 I By Company's 401(k) Plan Employee Stock Option (right to buy) 26.59 2017-05-02 4 M 0 13600 D 2021-02-08 Common Stock 13600 0 D Includes balances of 1633 Restricted Stock Units granted 2/12/2014, 666 granted 2/12/2014, 3799 granted 2/11/2015, 7000 granted 2/10/2016 and 4800 granted 2/8/2017, that are subject to forfeiture if certain events occur. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $54.44 to $55.40, 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 this footnote to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $55.44 to $55.61, 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 this footnote to this Form 4. The options vest 33.334% on the 18th month and 33.333% on the 30th and 42nd months from the 2/8/2012 grant date. 1 for 1. William K. Piotrowski, pursuant to a Power of Attorney 2017-05-04