how to get facebook page sharedposts rather than feeds for IONIC framework

.controller('FeedCtrl', function ($scope, $http, $stateParams, OpenFB, $ionicLoading, $ionicScrollDelegate) {

        $scope.show = function () {
            $scope.loading = $ionicLoading.show({
                content: 'Loading feed...'
            });
        };
        $scope.hide = function () {
            $ionicLoading.loading.hide();
        };
        function loadFeed()
        {
            $scope.show();
            OpenFB.get('/107621857718/feed', {limit: 5})
                    .success(function (result) {
                        $ionicLoading.hide();
                        $scope.loaded = result.data;
                        // Used with pull-to-refresh
                        //$scope.loaded = [];
                        $scope.$broadcast('scroll.infiniteScrollComplete');
                    })
                    .error(function (data) {
                        $ionicLoading.hide();
                        alert(data.error.message);
                    });


        }
        ;
        $scope.checkScroll = function () {

            var currentTop = $ionicScrollDelegate.$getByHandle('libScroll').getScrollPosition().top;
            var maxTop = $ionicScrollDelegate.$getByHandle('libScroll').getScrollView().__maxScrollTop;

            if ((currentTop >= maxTop) && (!$scope.libraryLoading))
            {
                loadMore();
            }
        };
        function loadMore()
        {

            $scope.show();
            OpenFB.get('/107621857718/feed')
                    .success(function (result) {

                        $ionicLoading.hide();
                        $scope.loaded = result.data;
                        // Used with pull-to-refresh

                        $scope.$broadcast('scroll.infiniteScrollComplete');

                    })

                    .error(function (data) {
                        $ionicLoading.hide();
                        alert(data.error.message);
                    });
        }

        $scope.doRefresh = loadFeed;
        loadFeed();



    });

For above part I am getting posts which is given by other users to page but I want posts shared by page.