X0202 4 2007-06-07 0001126328 PRINCIPAL FINANCIAL GROUP INC PFG 0001166875 ZIMPLEMAN LARRY D 711 HIGH STREET DES MOINES IA 50392 0 1 0 0 President and COO Common Stock 2007-06-07 4 M 0 24177 27.57 A 47651 D Common Stock 2007-06-07 4 S 0 200 59.42 D 47451 D Common Stock 2007-06-07 4 S 0 200 59.43 D 47251 D Common Stock 2007-06-07 4 S 0 1800 59.61 D 45451 D Common Stock 2007-06-07 4 S 0 200 59.67 D 45251 D Common Stock 2007-06-07 4 S 0 100 59.75 D 45151 D Common Stock 2007-06-07 4 S 0 700 59.76 D 44451 D Common Stock 2007-06-07 4 S 0 500 59.77 D 43951 D Common Stock 2007-06-07 4 S 0 100 59.78 D 43851 D Common Stock 2007-06-07 4 S 0 1200 59.79 D 42651 D Common Stock 2007-06-07 4 S 0 400 59.80 D 42251 D Common Stock 2007-06-07 4 S 0 677 59.82 D 41574 D Common Stock 2007-06-07 4 S 0 1195 59.83 D 40379 D Common Stock 2007-06-07 4 S 0 600 59.84 D 39779 D Common Stock 2007-06-07 4 S 0 900 59.85 D 38879 D Common Stock 2007-06-07 4 S 0 1600 59.86 D 37279 D Common Stock 2007-06-07 4 S 0 2504 59.87 D 34775 D Common Stock 2007-06-07 4 S 0 2426 59.88 D 32349 D Common Stock 2007-06-07 4 S 0 3764 59.89 D 28585 D Common Stock 2007-06-07 4 S 0 5111 59.90 D 23474 D Employee Stock Option (Right to Buy) 27.57 2007-06-07 4 M 0 24177 0 D 2006-02-24 2013-02-25 Common Stock 24177 48353 D Pursuant to a 10b5-1 plan adopted May 25, 2007. Includes 2,156 shares acquired pursuant to the Principal Financial Group, Inc. Employee Stock Purchase Plan. Joyce N. Hoffman, by Power of Attorney 2007-06-11