diff --git a/api/pyproject.toml b/api/pyproject.toml
index d722b9a5060d..3eeab6874148 100644
--- a/api/pyproject.toml
+++ b/api/pyproject.toml
@@ -44,7 +44,7 @@ dependencies = [
     "drf-writable-nested>=0.6.2,<0.7.0",
     "django-filter>=2.4.0,<2.5.0",
     "flagsmith-flag-engine>=10.1.0,<11.0.0",
-    "flagsmith-sql-flag-engine>=0.1.3,<0.2.0",
+    "flagsmith-sql-flag-engine>=0.2.0,<0.3.0",
     "django-clickhouse-backend>=1.4,<2.0",
     "clickhouse-driver",
     "boto3>=1.35.95,<1.36.0",
diff --git a/api/segment_membership/services.py b/api/segment_membership/services.py
index 9df56cffd7aa..532c3e1b630c 100644
--- a/api/segment_membership/services.py
+++ b/api/segment_membership/services.py
@@ -7,7 +7,12 @@
 from django.db.backends.utils import CursorWrapper
 from django.db.models import Q
 from flag_engine.context.types import EvaluationContext
-from flagsmith_sql_flag_engine import TranslateContext, translate_segment
+from flagsmith_sql_flag_engine import (
+    Binder,
+    PyformatParamStyle,
+    TranslateContext,
+    translate_segment,
+)
 from flagsmith_sql_flag_engine.dialects import ClickHouseDialect
 from task_processor.models import Task
 
@@ -122,6 +127,7 @@ def compute_segment_counts_for_project(
         return []
 
     dialect = ClickHouseDialect()
+    binder = Binder(PyformatParamStyle())
     select_clauses: list[str] = []
     for seg in segments:
         translate_ctx = TranslateContext(
@@ -129,6 +135,7 @@ def compute_segment_counts_for_project(
                 environment={"key": "_count", "name": project.name}
             ),
             dialect=dialect,
+            binder=binder,
         )
         predicate = translate_segment(
             map_segment_to_segment_context(map_segment_to_engine(seg)),
@@ -155,7 +162,7 @@ def compute_segment_counts_for_project(
         return []
 
     sql = "\nUNION ALL\n".join(select_clauses)
-    cursor.execute(sql, {"env_keys": tuple(env_id_by_key)})
+    cursor.execute(sql, {"env_keys": tuple(env_id_by_key), **binder.params})
     rows: list[tuple[Any, ...]] = cursor.fetchall()
     membership_counts: list[SegmentMembershipCount] = []
     for row in rows:
@@ -186,11 +193,13 @@ def get_segment_members_page(
     Provide identifier as `cursor` to get a page after that identifier.
     Provide `q` to filter to identifiers containing it (case-insensitive).
     """
+    binder = Binder(PyformatParamStyle())
     translate_ctx = TranslateContext(
         evaluation_context=EvaluationContext(
             environment={"key": "_members", "name": segment.project.name}
         ),
         dialect=ClickHouseDialect(),
+        binder=binder,
     )
     predicate = translate_segment(
         map_segment_to_segment_context(map_segment_to_engine(segment)),
@@ -208,7 +217,11 @@ def get_segment_members_page(
         "i.environment_id = %(env_key)s",
         "i.is_deleted = false",
     ]
-    params: dict[str, Any] = {"env_key": environment.api_key, "limit": limit}
+    params: dict[str, Any] = {
+        "env_key": environment.api_key,
+        "limit": limit,
+        **binder.params,
+    }
     if cursor:
         conditions.append("i.identifier > %(cursor)s")
         params["cursor"] = cursor
diff --git a/api/tests/unit/segment_membership/test_unit_segment_membership_services.py b/api/tests/unit/segment_membership/test_unit_segment_membership_services.py
index 767b17b42a07..b119643060b6 100644
--- a/api/tests/unit/segment_membership/test_unit_segment_membership_services.py
+++ b/api/tests/unit/segment_membership/test_unit_segment_membership_services.py
@@ -5,7 +5,7 @@
 from common.test_tools import RunTasksFixture
 from django.db import connections
 from django.utils import timezone
-from flag_engine.segments.constants import EQUAL
+from flag_engine.segments.constants import EQUAL, REGEX
 from pytest_django.fixtures import SettingsWrapper
 from pytest_mock import MockerFixture
 from task_processor.models import Task
@@ -191,6 +191,13 @@ def matching_segment(segment: Segment) -> Segment:
     return segment
 
 
+@pytest.fixture
+def percent_regex_segment(segment: Segment) -> Segment:
+    rule = SegmentRule.objects.create(segment=segment, type=SegmentRule.ALL_RULE)
+    Condition.objects.create(rule=rule, property="foo", operator=REGEX, value="[b%]ar")
+    return segment
+
+
 @pytest.mark.clickhouse
 def test_get_segment_members_page__deleted_identity__excluded(
     segment_membership_identities: None,
@@ -281,6 +288,37 @@ def test_compute_segment_counts_for_project__deleted_identity__excluded_from_cou
     assert counts[0].count == 2
 
 
+@pytest.mark.clickhouse
+def test_get_segment_members_page__regex_with_percent__returns_matches(
+    segment_membership_identities: None,
+    percent_regex_segment: Segment,
+    environment: Environment,
+) -> None:
+    # Given / When
+    members = get_segment_members_page(
+        percent_regex_segment, environment, cursor=None, limit=100
+    )
+
+    # Then
+    assert [member["identifier"] for member in members] == ["alice", "bob"]
+
+
+@pytest.mark.clickhouse
+def test_compute_segment_counts_for_project__regex_with_percent__counts_matches(
+    segment_membership_identities: None,
+    percent_regex_segment: Segment,
+    project: Project,
+) -> None:
+    # Given / When
+    with connections["clickhouse"].cursor() as cursor:
+        counts = compute_segment_counts_for_project(project, cursor)
+
+    # Then
+    assert len(counts) == 1
+    assert counts[0].segment_id == percent_regex_segment.id
+    assert counts[0].count == 2
+
+
 @pytest.mark.clickhouse
 def test_get_segment_members_page__matching_identities__returns_members_ordered_by_identifier(
     segment_membership_identities: None,
diff --git a/api/uv.lock b/api/uv.lock
index a57bf8efeabb..aa586f711b7a 100644
--- a/api/uv.lock
+++ b/api/uv.lock
@@ -1556,7 +1556,7 @@ requires-dist = [
     { name = "flagsmith-common", extras = ["test-tools"], marker = "extra == 'dev'" },
     { name = "flagsmith-flag-engine", specifier = ">=10.1.0,<11.0.0" },
     { name = "flagsmith-private", marker = "extra == 'private'", specifier = ">=0.10.1,<1", index = "https://flagsmith-production-084060095745.d.codeartifact.eu-west-2.amazonaws.com/pypi/flagsmith-pypi-production/simple/" },
-    { name = "flagsmith-sql-flag-engine", specifier = ">=0.1.3,<0.2.0" },
+    { name = "flagsmith-sql-flag-engine", specifier = ">=0.2.0,<0.3.0" },
     { name = "google-api-python-client", specifier = ">=1.12.5,<1.13.0" },
     { name = "google-re2", specifier = ">=1.0,<2.0.0" },
     { name = "gunicorn", specifier = ">=23.0.0,<23.1.0" },
@@ -1706,15 +1706,15 @@ wheels = [
 
 [[package]]
 name = "flagsmith-sql-flag-engine"
-version = "0.1.3"
+version = "0.2.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "flagsmith-flag-engine" },
     { name = "jsonpath-rfc9535" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/f4/bd/6647e7d6598b57b7edd4685fd28b27fb477a7bdf93525a1351cdd4fcdd86/flagsmith_sql_flag_engine-0.1.3.tar.gz", hash = "sha256:33b7203d25ded9f00c213910294030b6e102d34230c7fa51b43ccc9ec913f5c6", size = 17992, upload-time = "2026-07-01T19:08:46.985Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/72/34/961758e0946ffd430cf90480dce67fd7b548269749b174961d6380f2fb57/flagsmith_sql_flag_engine-0.2.0.tar.gz", hash = "sha256:38af827ba846795b04d7504e47498875bbfb6951c26177427b0e6378eaebed52", size = 19396, upload-time = "2026-07-02T17:40:02.645Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/13/1f/19219272e2b2ee3e44aca4c881c290b0399086c60c6733091d25f6faaa75/flagsmith_sql_flag_engine-0.1.3-py3-none-any.whl", hash = "sha256:6da33dc77636924a523df8c265a7e196fec886b5d0a87e5b37a3cb20e71dd77f", size = 21736, upload-time = "2026-07-01T19:08:45.767Z" },
+    { url = "https://files.pythonhosted.org/packages/22/59/6ea43aba79109cbd4feaad3623a7554d4364c1b825d1989ba6410764aa0f/flagsmith_sql_flag_engine-0.2.0-py3-none-any.whl", hash = "sha256:a30658d740a3c7f8111c3475005f8ec75a9f9ad7ce4ab58e4fd300364dca139c", size = 23742, upload-time = "2026-07-02T17:40:01.263Z" },
 ]
 
 [[package]]
diff --git a/docs/docs/deployment-self-hosting/observability/_events-catalogue.md b/docs/docs/deployment-self-hosting/observability/_events-catalogue.md
index 73eb191ab05f..fe0d6052fcd1 100644
--- a/docs/docs/deployment-self-hosting/observability/_events-catalogue.md
+++ b/docs/docs/deployment-self-hosting/observability/_events-catalogue.md
@@ -369,7 +369,7 @@ Attributes:
 ### `segment_membership.compute.segment.skipped`
 
 Logged at `error` from:
- - `api/segment_membership/services.py:138`
+ - `api/segment_membership/services.py:145`
 
 Attributes:
  - `project.id`
@@ -379,7 +379,7 @@ Attributes:
 ### `segment_membership.members.segment.skipped`
 
 Logged at `error` from:
- - `api/segment_membership/services.py:200`
+ - `api/segment_membership/services.py:209`
 
 Attributes:
  - `reason`