The two daughters Lee Boo-jin and Lee Seo-hyun split the remaining shares at 2-for-1 respectively.
Experts say this favors the leadership succession of Lee Jae-yong.
"From the fact that Samsung Electronics Vice Chairman Lee Jae-yong inherited half of the Samsung Life Insurance stocks, it seems that there won't be much change to the governance structure of Samsung Group. Samsung will now be led by Lee Jae-yong, and in the long run some Samsung affiliates may spin off and operate separately."
For the remaining late chairman Lee Kun-hee's shares, the Samsung Group heirs have agreed to split them in accordance with the country's inheritance law.