X0306 4 2015-12-31 false 0001079577 STANCORP FINANCIAL GROUP INC SFG 0001476802 McMillan Daniel J. 1100 SW 6TH AVE PORTLAND OR 97204 false true false false VP Employee Benefits common stock 2015-12-31 4 M false 3290 0 A 14472 D common stock 2015-12-31 4 A false 5922 0 A 20394 D common stock 2015-12-31 4 M false 1466 66.19 A 21860 D common stock 2015-12-31 4 M false 1834 39.58 A 23694 D common stock 2015-12-31 4 M false 1763 38.56 A 25457 D common stock 2015-12-31 4 F false 1677 114.14 D 23780 D common stock 2015-12-31 4 F false 3018 114.14 D 20762 D common stock 2015-12-31 4 F false 1164 114.14 D 19598 D common stock 2015-12-31 4 F false 1247 114.14 D 18351 D common stock 2015-12-31 4 F false 1191 114.14 D 17160 D Restricted Stock Unit 021113 0 2015-12-31 4 M false 3290 0 D 2015-12-31 2015-12-31 common stock 3290 0 D Stock Option RTB 02232015 66.19 2015-12-31 4 M false 1466 0 D 2015-12-31 2025-02-23 common stock 8238 6772 D Stock Option RTB 02132012 39.58 2015-12-31 4 M false 1834 0 D 2012-12-31 2022-02-13 common stock 7339 0 D Stock Option RTB 02112013 38.56 2015-12-31 4 M false 1763 0 D 2013-12-31 2023-02-11 common stock 7054 1764 D Each Restricted Stock Unit represented a contingent right to receive one share of SFG stock. This option was granted on February 23, 2015 and becomes exercisable in four equal installments on the first four anniversaries of December 31, 2014. This option was granted on February 13, 2012 and became exercisable in four equal installments on the first four anniversaries December 31, 2011. This option was granted on February 11, 2013 and becomes exercisable in four equal installments on the first four anniversaries December 31, 2012. Holley Y. Franklin 2016-01-04