diff --git a/lib/trino-orc/src/main/java/io/trino/orc/reader/TimestampColumnReader.java b/lib/trino-orc/src/main/java/io/trino/orc/reader/TimestampColumnReader.java
index fbba025ff3e8..a794365283e9 100644
--- a/lib/trino-orc/src/main/java/io/trino/orc/reader/TimestampColumnReader.java
+++ b/lib/trino-orc/src/main/java/io/trino/orc/reader/TimestampColumnReader.java
@@ -60,6 +60,7 @@
 import static io.trino.spi.type.Timestamps.NANOSECONDS_PER_MICROSECOND;
 import static io.trino.spi.type.Timestamps.NANOSECONDS_PER_MILLISECOND;
 import static io.trino.spi.type.Timestamps.PICOSECONDS_PER_MICROSECOND;
+import static io.trino.spi.type.Timestamps.PICOSECONDS_PER_MILLISECOND;
 import static io.trino.spi.type.Timestamps.PICOSECONDS_PER_NANOSECOND;
 import static io.trino.spi.type.Timestamps.roundDiv;
 import static java.lang.Math.floorDiv;
@@ -616,6 +617,11 @@ private void readInstantMicros(int i, long[] millisValues, int[] picosFractionVa
 
             // round nanos to micros and convert to picos
             picosFraction = toIntExact(roundDiv(nanos, NANOSECONDS_PER_MICROSECOND)) * PICOSECONDS_PER_MICROSECOND;
+
+            if (picosFraction == PICOSECONDS_PER_MILLISECOND) {
+                picosFraction = 0;
+                millis++;
+            }
         }
 
         millisValues[i] = packDateTimeWithZone(millis, TimeZoneKey.UTC_KEY);
diff --git a/lib/trino-orc/src/test/java/io/trino/orc/TestTimestampTzMicros.java b/lib/trino-orc/src/test/java/io/trino/orc/TestTimestampTzMicros.java
new file mode 100644
index 000000000000..c2f986d634af
--- /dev/null
+++ b/lib/trino-orc/src/test/java/io/trino/orc/TestTimestampTzMicros.java
@@ -0,0 +1,60 @@
+/*
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.trino.orc;
+
+import com.google.common.collect.ImmutableList;
+import io.airlift.slice.Slices;
+import io.trino.spi.type.LongTimestampWithTimeZone;
+import io.trino.spi.type.TimestampType;
+import io.trino.spi.type.TimestampWithTimeZoneType;
+import org.joda.time.DateTimeZone;
+import org.testng.annotations.Test;
+
+import static com.google.common.io.Resources.getResource;
+import static com.google.common.io.Resources.toByteArray;
+import static io.trino.memory.context.AggregatedMemoryContext.newSimpleAggregatedMemoryContext;
+import static io.trino.orc.OrcReader.INITIAL_BATCH_SIZE;
+import static io.trino.spi.type.TimestampWithTimeZoneType.createTimestampWithTimeZoneType;
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class TestTimestampTzMicros
+{
+    /**
+     * Test for incorrect rounding when reading timestamp_tz_micros: https://github.com/trinodb/trino/pull/12804
+     */
+    @Test
+    public void test()
+            throws Exception
+    {
+        OrcReader orcReader = OrcReader.createOrcReader(new MemoryOrcDataSource(
+                                new OrcDataSourceId("memory"),
+                                Slices.wrappedBuffer(toByteArray(getResource("timestamp-tz-micros.orc")))),
+                        new OrcReaderOptions())
+                .orElseThrow(() -> new RuntimeException("File is empty"));
+
+        TimestampWithTimeZoneType timestampTzType = createTimestampWithTimeZoneType(6);
+
+        try (OrcRecordReader reader = orcReader.createRecordReader(
+                orcReader.getRootColumn().getNestedColumns(),
+                ImmutableList.of(timestampTzType, TimestampType.createTimestampType(6)),
+                OrcPredicate.TRUE,
+                DateTimeZone.UTC,
+                newSimpleAggregatedMemoryContext(),
+                INITIAL_BATCH_SIZE,
+                RuntimeException::new)) {
+            assertThat(timestampTzType.getObject(reader.nextPage().getBlock(0), 0))
+                    .isEqualTo(LongTimestampWithTimeZone.fromEpochMillisAndFraction(1654809982754L, 0, (short) 0));
+        }
+    }
+}
diff --git a/lib/trino-orc/src/test/resources/timestamp-tz-micros.orc b/lib/trino-orc/src/test/resources/timestamp-tz-micros.orc
new file mode 100644
index 000000000000..a1c623369eaf
Binary files /dev/null and b/lib/trino-orc/src/test/resources/timestamp-tz-micros.orc differ