X0303 4 2011-02-14 0001011570 KNOLL INC KNL 0001310413 Graves Arthur C C/O KNOLL, INC. 1235 WATER STREET EAST GREENVILLE PA 18041 0 1 0 0 Exec.V.P.-Sales & Distribution Common Stock 2011-02-14 4 M 0 11800 16.34 A 119186 D Common Stock 2011-02-14 4 S 0 430 20.70 D 118756 D Common Stock 2011-02-14 4 S 0 250 20.71 D 118506 D Common Stock 2011-02-14 4 S 0 4604 20.80 D 113902 D Common Stock 2011-02-14 4 S 0 3376 20.81 D 110526 D Common Stock 2011-02-14 4 S 0 569 20.82 D 109957 D Common Stock 2011-02-14 4 S 0 873 20.84 D 109084 D Common Stock 2011-02-14 4 S 0 180 20.85 D 108904 D Common Stock 2011-02-14 4 S 0 247 20.86 D 108657 D Common Stock 2011-02-14 4 S 0 796 20.87 D 107861 D Common Stock 2011-02-14 4 S 0 360 20.88 D 107501 D Common Stock 2011-02-14 4 S 0 81 20.89 D 107420 D Common Stock 2011-02-14 4 S 0 34 20.90 D 107386 D Common Stock 2011-02-15 4 M 0 31800 16.34 A 139186 D Common Stock 2011-02-15 4 S 0 100 20.53 D 139086 D Common Stock 2011-02-15 4 S 0 200 20.54 D 138886 D Common Stock 2011-02-15 4 S 0 1900 20.57 D 136986 D Common Stock 2011-02-15 4 S 0 16 20.58 D 136970 D Common Stock 2011-02-15 4 S 0 2100 20.59 D 134870 D Common Stock 2011-02-15 4 S 0 2500 20.60 D 132370 D Common Stock 2011-02-15 4 S 0 2599 20.61 D 129771 D Common Stock 2011-02-15 4 S 0 311 20.62 D 129460 D Common Stock 2011-02-15 4 S 0 1000 20.69 D 128460 D Common Stock 2011-02-15 4 S 0 1975 20.72 D 126485 D Common Stock 2011-02-15 4 S 0 3000 20.74 D 123485 D Common Stock 2011-02-15 4 S 0 1595 20.75 D 121890 D Common Stock 2011-02-15 4 S 0 1304 20.76 D 120586 D Common Stock 2011-02-15 4 S 0 4400 20.79 D 116186 D Common Stock 2011-02-15 4 S 0 2814 20.80 D 113372 D Common Stock 2011-02-15 4 S 0 1100 20.83 D 112272 D Employee Stock Option (Right to Buy) 16.34 2011-02-14 4 M 0 11800 0 D 2012-02-05 Common Stock 11800 57362 D Employee Stock Option (Right to Buy) 16.34 2011-02-15 4 M 0 31800 0 D 2012-02-05 Common Stock 31800 25562 D Employee Stock Option (Right to Buy) 16.34 2011-02-16 4 M 0 25562 0 D 2012-02-05 Common Stock 25562 0 D These stock options are a portion of the stock options that vested in four annual installments beginning on the first anniversary of February 5, 2002. These stock options expire on February 5, 2012. 1 of 2 Forms 4 /s/Michael A. Pollner, Attorney-in-Fact 2011-02-16