X0306 4 2013-09-19 0 0001379785 Triangle Capital CORP TCAP 0001389291 Burgess Brent P W 3700 GLENWOOD AVENUE SUITE 530 RALEIGH NC 27612 1 1 0 0 Chief Investment Officer Common Stock 2013-09-19 4 S 0 15000 29.04 D 224298 D Common Stock 2013-09-20 4 S 0 15000 29.26 D 209298 D Common Stock 2013-09-23 4 S 0 5695 29.15 D 203603 D The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by this reporting person. The price reported in Column 4 is a weighted average price. These shares were sold in more than one transaction at prices ranging from $29.00 to $29.17, inclusive. The reporting person hereby undertakes to provide to Triangle Capital Corporation, any security holder of Triangle Capital Corporation, 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 ranges set forth in footnotes (2), (3) and (4) to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in more than one transaction at prices ranging from $29.06 to $29.40, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in more than one transaction at prices ranging from $29.12 to $29.18, inclusive. /s/ Helen W. Brown, Attorney-in-Fact for Brent P.W. Burgess 2013-09-23