X0303 4 2011-02-10 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 2011-02-10 4 M 0 1020 16.34 A 108406 D Common Stock 2011-02-10 4 S 0 1020 20.50 D 107386 D Common Stock 2011-02-11 4 M 0 40000 16.34 A 147386 D Common Stock 2011-02-11 4 S 0 1900 20.70 D 145486 D Common Stock 2011-02-11 4 S 0 1000 20.73 D 144486 D Common Stock 2011-02-11 4 S 0 200 20.75 D 144286 D Common Stock 2011-02-11 4 S 0 100 20.76 D 144186 D Common Stock 2011-02-11 4 S 0 600 20.77 D 143586 D Common Stock 2011-02-11 4 S 0 100 20.79 D 143486 D Common Stock 2011-02-11 4 S 0 400 20.82 D 143086 D Common Stock 2011-02-11 4 S 0 1700 20.83 D 141386 D Common Stock 2011-02-11 4 S 0 5564 20.86 D 135822 D Common Stock 2011-02-11 4 S 0 2536 20.87 D 133286 D Common Stock 2011-02-11 4 S 0 2200 20.88 D 131086 D Common Stock 2011-02-11 4 S 0 1200 20.89 D 129886 D Common Stock 2011-02-11 4 S 0 6067 20.90 D 123819 D Common Stock 2011-02-11 4 S 0 4359 20.91 D 119460 D Common Stock 2011-02-11 4 S 0 4174 20.92 D 115286 D Common Stock 2011-02-11 4 S 0 2700 20.93 D 112586 D Common Stock 2011-02-11 4 S 0 3300 20.94 D 109286 D Common Stock 2011-02-11 4 S 0 1900 20.95 D 107386 D Employee Stock Option (Right to Buy) 16.34 2011-02-10 4 M 0 1020 0 D 2012-02-05 Common Stock 1020 109162 D Employee Stock Option (Right to Buy) 16.34 2011-02-11 4 M 0 40000 0 D 2012-02-05 Common Stock 40000 69162 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. /s/Michael A. Pollner, Attorney-in-Fact 2011-02-14