X0202 4 2007-12-03 0001126328 PRINCIPAL FINANCIAL GROUP INC PFG 0001166853 GRISWELL J BARRY 711 HIGH STREET DES MOINES IA 50392 1 1 0 0 Chairman and CEO Common Stock 2007-12-03 4 S 0 1400 63.85 A 281024 D Common Stock 2007-12-03 4 S 0 400 63.86 D 280624 D Common Stock 2007-12-03 4 S 0 1200 63.87 D 279424 D Common Stock 2007-12-03 4 S 0 500 63.88 D 278924 D Common Stock 2007-12-03 4 S 0 900 63.89 D 278024 D Common Stock 2007-12-03 4 S 0 1400 63.90 D 276624 D Common Stock 2007-12-03 4 S 0 400 63.91 D 276224 D Common Stock 2007-12-03 4 S 0 2099 63.92 D 274125 D Common Stock 2007-12-03 4 S 0 1801 63.93 D 272324 D Common Stock 2007-12-03 4 S 0 1200 63.94 D 271124 D Common Stock 2007-12-03 4 S 0 2300 63.95 D 268824 D Common Stock 2007-12-03 4 S 0 1466 63.96 D 267358 D Common Stock 2007-12-03 4 S 0 3181 63.97 D 264177 D Common Stock 2007-12-03 4 S 0 1427 63.98 D 262750 D Common Stock 2007-12-03 4 S 0 619 63.99 D 262131 D Common Stock 2007-12-03 4 S 0 2500 64.00 D 259631 D Common Stock 2007-12-03 4 S 0 2200 64.01 D 257431 D Common Stock 2007-12-03 4 S 0 1042 64.02 D 256389 D Common Stock 2007-12-03 4 S 0 100 64.03 D 256289 D Common Stock 2007-12-03 4 S 0 700 64.04 D 255589 D Common Stock 2007-12-03 4 S 0 300 64.05 D 255289 D Common Stock 2007-12-03 4 S 0 705 64.06 D 254584 D Common Stock 2007-12-03 4 S 0 1095 64.07 D 253489 D Common Stock 2007-12-03 4 S 0 2000 64.08 D 251489 D Common Stock 2007-12-03 4 S 0 1600 64.09 D 249889 D Common Stock 2007-12-03 4 S 0 1800 64.10 D 248089 D Common Stock 2007-12-03 4 S 0 900 64.11 D 247189 D Common Stock 2007-12-03 4 S 0 100 64.12 D 247089 D Common Stock 2007-12-03 4 S 0 100 64.13 D 246989 D Common Stock 2007-12-03 4 S 0 600 64.15 D 246389 D Pursuant to a 10b5-1 plan adopted December 15, 2006, as amended on August 7, 2007. Includes 3,306 shares acquired pursuant to the Principal Financial Group, Inc. Employee Stock Purchase Plan. This is the second of five Form 4s filed by the reporting person on the same date. Joyce N. Hoffman, by Power of Attorney 2007-12-05