diff --git a/dimod/sampleset.py b/dimod/sampleset.py
index bfcd2cc0f..f79d62f61 100644
--- a/dimod/sampleset.py
+++ b/dimod/sampleset.py
@@ -237,7 +237,16 @@ def concatenate(samplesets, defaults=None):
     record = recfunctions.stack_arrays(records, defaults=defaults,
                                        asrecarray=True, usemask=False)
 
-    return SampleSet(record, variables, {}, vartype)
+    # Merge info, preserving conflicts as lists
+    info = {}
+    for k in set().union(*[s.info for s in samplesets]):
+        info[k] = []
+        for s in samplesets:
+             if k in s.info and s.info[k] not in info[k]:
+                 info[k] += [s.info[k]]
+        info[k] = info[k] if len(info[k])>1 else info[k].pop()
+
+    return SampleSet(record, variables, info, vartype)
 
 
 def _iter_records(samplesets, vartype, variables):
diff --git a/tests/test_sampleset.py b/tests/test_sampleset.py
index 74672acad..8b460a134 100644
--- a/tests/test_sampleset.py
+++ b/tests/test_sampleset.py
@@ -900,6 +900,7 @@ def test_simple(self):
         out = dimod.SampleSet.from_samples([[-1, +1], [+1, -1], [+1, +1], [-1, -1]], dimod.SPIN, energy=[-1, -1, 1, 1])
 
         self.assertEqual(comb, out)
+        self.assertEqual(comb.info, {})
         np.testing.assert_array_equal(comb.record.sample, out.record.sample)
 
     def test_variables_order(self):
@@ -941,6 +942,17 @@ def test_variables_order_and_vartype(self):
         self.assertEqual(comb, out)
         np.testing.assert_array_equal(comb.record.sample, out.record.sample)
 
+    def test_info(self):
+        ss0 = dimod.SampleSet.from_samples(([-1, +1], 'ab'), dimod.SPIN, info={}, energy=-1)
+        ss1 = dimod.SampleSet.from_samples(([-1, +1], 'ba'), dimod.SPIN, info={1:'a',2:['b','c']}, energy=-1)
+        ss2 = dimod.SampleSet.from_samples(([+1, +1], 'ab'), dimod.SPIN, info={3:'e',2:'d',4:[]}, energy=+1)
+
+        comb = dimod.concatenate((ss0, ss1, ss2))
+
+        out_info = {1:'a',2:[['b','c'],'d'],3:'e',4:[]}
+
+        self.assertEqual(comb.info, out_info)
+
     def test_empty(self):
         with self.assertRaises(ValueError):
             dimod.concatenate([])