X0303 4 2011-02-09 0001011570 KNOLL INC KNL 0001310400 Cogan Andrew B C/O KNOLL, INC. 1235 WATER STREET EAST GREENVILLE PA 18041 1 1 0 0 Chief Executive Officer Common Stock 2011-02-09 4 A 0 195000 0 A 913921 D Common Stock 2011-02-10 4 M 0 146817 16.34 A 1060738 D Common Stock 2011-02-10 4 S 0 10619 20.40 D 1050119 D Common Stock 2011-02-10 4 S 0 4781 20.41 D 1045338 D Common Stock 2011-02-10 4 S 0 2300 20.42 D 1043038 D Common Stock 2011-02-10 4 S 0 9900 20.43 D 1033138 D Common Stock 2011-02-10 4 S 0 6100 20.44 D 1027038 D Common Stock 2011-02-10 4 S 0 4751 20.45 D 1022287 D Common Stock 2011-02-10 4 S 0 5046 20.46 D 1017241 D Common Stock 2011-02-10 4 S 0 3654 20.47 D 1013587 D Common Stock 2011-02-10 4 S 0 4400 20.48 D 1009187 D Common Stock 2011-02-10 4 S 0 4800 20.49 D 1004387 D Common Stock 2011-02-10 4 S 0 5626 20.50 D 998761 D Common Stock 2011-02-10 4 S 0 5500 20.51 D 993261 D Common Stock 2011-02-10 4 S 0 5970 20.52 D 987291 D Common Stock 2011-02-10 4 S 0 3360 20.53 D 983931 D Common Stock 2011-02-10 4 S 0 5914 20.54 D 978017 D Common Stock 2011-02-10 4 S 0 6877 20.55 D 971140 D Common Stock 2011-02-10 4 S 0 4848 20.56 D 966292 D Common Stock 2011-02-10 4 S 0 3590 20.57 D 962702 D Common Stock 2011-02-10 4 S 0 1510 20.58 D 961192 D Common Stock 2011-02-10 4 S 0 6000 20.59 D 955192 D Common Stock 2011-02-10 4 S 0 2783 20.60 D 952409 D Common Stock 2011-02-10 4 S 0 2507 20.61 D 949902 D Common Stock 2011-02-10 4 S 0 2115 20.62 D 947787 D Common Stock 2011-02-10 4 S 0 6977 20.63 D 940810 D Common Stock 2011-02-10 4 S 0 2223 20.64 D 938587 D Common Stock 2011-02-10 4 S 0 2100 20.65 D 936487 D Common Stock 2011-02-10 4 S 0 2200 20.66 D 934287 D Common Stock 2011-02-10 4 S 0 500 20.67 D 933787 D Employee Stock Option (Right to Buy) 16.34 2011-02-10 4 M 0 146817 0 D 2012-02-05 Common Stock 146817 73549 D These shares vest on the third anniversary of the date of grant, subject to earlier performance vesting. 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 3 Forms 4 /s/Michael A. Pollner, Attorney-in-Fact 2011-02-11