diff --git a/cmd/ateapi/internal/controlapi/functionaltest/actor_test.go b/cmd/ateapi/internal/controlapi/functionaltest/actor_test.go
index 1b82acf0c..5198f5ed6 100644
--- a/cmd/ateapi/internal/controlapi/functionaltest/actor_test.go
+++ b/cmd/ateapi/internal/controlapi/functionaltest/actor_test.go
@@ -1610,7 +1610,7 @@ func TestResumeActor(t *testing.T) {
 			},
 		},
 	}
-	if diff := cmp.Diff(want, getResp, protocmp.Transform(), ignoreUID, ignoreVersion, ignoreTimestamps, protocmp.IgnoreFields(&ateapipb.WorkerAssignment{}, "worker_pod_uid")); diff != "" {
+	if diff := cmp.Diff(want, getResp, protocmp.Transform(), ignoreUID, ignoreVersion, ignoreTimestamps, ignoreResumeTime, protocmp.IgnoreFields(&ateapipb.WorkerAssignment{}, "worker_pod_uid")); diff != "" {
 		t.Errorf("GetActor response mismatch (-want +got):\n%s", diff)
 	}
 
@@ -2108,7 +2108,7 @@ func TestSuspendActor(t *testing.T) {
 		ignoreUID,
 		ignoreVersion,
 		ignoreTimestamps,
-		protocmp.IgnoreFields(&ateapipb.ActorStatus{}, "latest_snapshot"),
+		protocmp.IgnoreFields(&ateapipb.ActorStatus{}, "latest_snapshot", "last_resume_time"),
 	); diff != "" {
 		t.Errorf("GetActor response mismatch (-want +got):\n%s", diff)
 	}
@@ -2202,6 +2202,7 @@ func TestPauseActor(t *testing.T) {
 		ignoreUID,
 		ignoreVersion,
 		ignoreTimestamps,
+		ignoreResumeTime,
 		protocmp.IgnoreFields(&ateapipb.WorkerAssignment{}, "worker_pod_uid"),
 		protocmp.IgnoreFields(&ateapipb.LocalSnapshotInfo{}, "snapshot_name"),
 	); diff != "" {
diff --git a/cmd/ateapi/internal/controlapi/functionaltest/common_test.go b/cmd/ateapi/internal/controlapi/functionaltest/common_test.go
index e7c144000..a09d1088e 100644
--- a/cmd/ateapi/internal/controlapi/functionaltest/common_test.go
+++ b/cmd/ateapi/internal/controlapi/functionaltest/common_test.go
@@ -70,6 +70,7 @@ var (
 	ignoreUID        = protocmp.IgnoreFields(&ateapipb.ResourceMetadata{}, "uid")
 	ignoreVersion    = protocmp.IgnoreFields(&ateapipb.ResourceMetadata{}, "version")
 	ignoreTimestamps = protocmp.IgnoreFields(&ateapipb.ResourceMetadata{}, "create_time", "update_time")
+	ignoreResumeTime = protocmp.IgnoreFields(&ateapipb.ActorStatus{}, "last_resume_time")
 )
 
 type testContext struct {
diff --git a/cmd/ateapi/internal/controlapi/workflow_resume.go b/cmd/ateapi/internal/controlapi/workflow_resume.go
index 5dfce905f..229d6fdd7 100644
--- a/cmd/ateapi/internal/controlapi/workflow_resume.go
+++ b/cmd/ateapi/internal/controlapi/workflow_resume.go
@@ -31,6 +31,7 @@ import (
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
 	"google.golang.org/protobuf/proto"
+	"google.golang.org/protobuf/types/known/timestamppb"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/labels"
 	"k8s.io/apimachinery/pkg/util/wait"
@@ -764,6 +765,7 @@ func (w *ActorWorkflow) finalizeRunning(ctx context.Context, actorRef resources.
 
 	storedActor, err := w.store.UpdateActor(ctx, actorRef, store.WithPrecondition(latestActor, func(toUpdate *ateapipb.Actor) error {
 		toUpdate.Status.State = ateapipb.ActorState_ACTOR_STATE_RUNNING
+		toUpdate.Status.LastResumeTime = timestamppb.Now()
 		return nil
 	}))
 	if err != nil {
diff --git a/cmd/ateapi/internal/controlapi/workflow_resume_test.go b/cmd/ateapi/internal/controlapi/workflow_resume_test.go
index 0439571ee..0c35a085d 100644
--- a/cmd/ateapi/internal/controlapi/workflow_resume_test.go
+++ b/cmd/ateapi/internal/controlapi/workflow_resume_test.go
@@ -611,6 +611,36 @@ func TestResumeActor_CrashesOnMissingWorkerAssignment(t *testing.T) {
 	}
 }
 
+func TestFinalizeRunning_SetsLastResumeTime(t *testing.T) {
+	ctx := context.Background()
+	st, cleanup := storetest.SetupTestStore(t)
+	defer cleanup()
+	w := newTestActorWorkflow(t, st, "ns", "tmpl1")
+
+	ref := resources.ActorRef{Atespace: "team-a", Name: "id1"}
+	seedWorkflowActor(t, ctx, st, ref, "ns", "tmpl1", ateapipb.ActorState_ACTOR_STATE_RESUMING)
+
+	before := time.Now()
+	if _, err := w.finalizeRunning(ctx, ref); err != nil {
+		t.Fatalf("finalizeRunning: %v", err)
+	}
+
+	got, err := st.GetActor(ctx, ref)
+	if err != nil {
+		t.Fatalf("GetActor: %v", err)
+	}
+	if got.GetStatus().GetState() != ateapipb.ActorState_ACTOR_STATE_RUNNING {
+		t.Errorf("state = %v, want RUNNING", got.GetStatus().GetState())
+	}
+	lrt := got.GetStatus().GetLastResumeTime()
+	if lrt == nil {
+		t.Fatal("LastResumeTime not set")
+	}
+	if ts := lrt.AsTime(); ts.Before(before.Add(-time.Second)) || ts.After(time.Now().Add(time.Second)) {
+		t.Errorf("LastResumeTime = %v, want within test window", ts)
+	}
+}
+
 // TestValidateAssignedWorker_WorkerOwnership verifies that RESUMING recovery
 // only proceeds on a worker whose assignment still names this actor: the
 // recovery path loads the worker by pod name only, so the assignment may have
diff --git a/cmd/ateapi/internal/controlapi/workflow_suspend_test.go b/cmd/ateapi/internal/controlapi/workflow_suspend_test.go
index 659b4694b..ccbc82200 100644
--- a/cmd/ateapi/internal/controlapi/workflow_suspend_test.go
+++ b/cmd/ateapi/internal/controlapi/workflow_suspend_test.go
@@ -18,6 +18,7 @@ import (
 	"context"
 	"errors"
 	"testing"
+	"time"
 
 	"github.com/agent-substrate/substrate/cmd/ateapi/internal/store"
 	"github.com/agent-substrate/substrate/cmd/ateapi/internal/store/ateredis"
@@ -30,6 +31,7 @@ import (
 	"github.com/redis/go-redis/v9"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
+	"google.golang.org/protobuf/types/known/timestamppb"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/client-go/tools/cache"
 )
@@ -372,6 +374,41 @@ func TestEnsureSuspendedFinalized_NoAssignment(t *testing.T) {
 	}
 }
 
+// LastResumeTime records the last transition into RUNNING, so suspending must
+// leave it alone: it stays queryable while the actor is suspended.
+func TestEnsureSuspendedFinalized_KeepsLastResumeTime(t *testing.T) {
+	ctx := context.Background()
+	persistence := newTestPersistence(t)
+
+	resumedAt := timestamppb.New(time.Date(2026, 1, 1, 0, 0, 0, 0, time.UTC))
+	actor := &ateapipb.Actor{
+		Metadata: &ateapipb.ResourceMetadata{Atespace: "team-a", Name: "actor-1"},
+		Status: &ateapipb.ActorStatus{
+			State:                                ateapipb.ActorState_ACTOR_STATE_SUSPENDING,
+			InProgressSnapshotName:               "2026-01-01t00-00-00z-abc",
+			InProgressSnapshotSourceActorVersion: 1,
+			LastResumeTime:                       resumedAt,
+		},
+	}
+	if _, err := persistence.CreateActor(ctx, actor); err != nil {
+		t.Fatalf("CreateActor: %v", err)
+	}
+
+	w := &ActorWorkflow{store: persistence}
+	tmpl := &atev1alpha1.ActorTemplate{Spec: atev1alpha1.ActorTemplateSpec{SnapshotsConfig: atev1alpha1.SnapshotsConfig{Location: "gs://snapshots"}}}
+	stored, err := w.ensureSuspendedFinalized(ctx, resources.ActorRef{Atespace: "team-a", Name: "actor-1"}, tmpl)
+	if err != nil {
+		t.Fatalf("ensureSuspendedFinalized: %v", err)
+	}
+
+	if stored.GetStatus().GetState() != ateapipb.ActorState_ACTOR_STATE_SUSPENDED {
+		t.Errorf("state = %v, want SUSPENDED", stored.GetStatus().GetState())
+	}
+	if got := stored.GetStatus().GetLastResumeTime(); !got.AsTime().Equal(resumedAt.AsTime()) {
+		t.Errorf("LastResumeTime = %v, want %v preserved through suspend", got.AsTime(), resumedAt.AsTime())
+	}
+}
+
 func TestEnsureSuspendedFinalized_ReleasesOnlyOwnWorker(t *testing.T) {
 	tests := []struct {
 		name               string
diff --git a/pkg/proto/ateapipb/ateapi.pb.go b/pkg/proto/ateapipb/ateapi.pb.go
index 79c9b6ef4..7f964b932 100644
--- a/pkg/proto/ateapipb/ateapi.pb.go
+++ b/pkg/proto/ateapipb/ateapi.pb.go
@@ -931,6 +931,8 @@ type ActorStatus struct {
 	// How this Actor was seeded from an ActorSnapshot at CreateActor. Unset if
 	// the Actor was not created from a snapshot.
 	SourceSnapshot *ActorSourceSnapshotStatus `protobuf:"bytes,9,opt,name=source_snapshot,json=sourceSnapshot,proto3" json:"source_snapshot,omitempty"`
+	// Time of the most recent transition into ACTOR_STATE_RUNNING.
+	LastResumeTime *timestamppb.Timestamp `protobuf:"bytes,10,opt,name=last_resume_time,json=lastResumeTime,proto3" json:"last_resume_time,omitempty"`
 	unknownFields  protoimpl.UnknownFields
 	sizeCache      protoimpl.SizeCache
 }
@@ -1028,6 +1030,13 @@ func (x *ActorStatus) GetSourceSnapshot() *ActorSourceSnapshotStatus {
 	return nil
 }
 
+func (x *ActorStatus) GetLastResumeTime() *timestamppb.Timestamp {
+	if x != nil {
+		return x.LastResumeTime
+	}
+	return nil
+}
+
 // ActorSourceSnapshotStatus records what an Actor's source_snapshot_tag
 // resolved to at CreateActor time. Set once, immutable afterward.
 type ActorSourceSnapshotStatus struct {
@@ -4873,7 +4882,7 @@ const file_ateapi_proto_rawDesc = "" +
 	"\x0eactor_template\x18\x04 \x01(\v2\x11.ateapi.ObjectRefR\ractorTemplate\x129\n" +
 	"\x0fworker_selector\x18\x05 \x01(\v2\x10.ateapi.SelectorR\x0eworkerSelector\x12A\n" +
 	"\x13source_snapshot_tag\x18\x06 \x01(\v2\x11.ateapi.ObjectRefR\x11sourceSnapshotTag\x12+\n" +
-	"\x06status\x18\a \x01(\v2\x13.ateapi.ActorStatusR\x06status\"\xe8\x04\n" +
+	"\x06status\x18\a \x01(\v2\x13.ateapi.ActorStatusR\x06status\"\xae\x05\n" +
 	"\vActorStatus\x12(\n" +
 	"\x05state\x18\x01 \x01(\x0e2\x12.ateapi.ActorStateR\x05state\x12E\n" +
 	"\x11worker_assignment\x18\x02 \x01(\v2\x18.ateapi.WorkerAssignmentR\x10workerAssignment\x129\n" +
@@ -4883,7 +4892,9 @@ const file_ateapi_proto_rawDesc = "" +
 	")in_progress_snapshot_source_actor_version\x18\x06 \x01(\x03R$inProgressSnapshotSourceActorVersion\x12;\n" +
 	"\ractor_volumes\x18\a \x03(\v2\x16.ateapi.ExternalVolumeR\factorVolumes\x12D\n" +
 	"\x1fin_progress_local_snapshot_name\x18\b \x01(\tR\x1binProgressLocalSnapshotName\x12J\n" +
-	"\x0fsource_snapshot\x18\t \x01(\v2!.ateapi.ActorSourceSnapshotStatusR\x0esourceSnapshot\"m\n" +
+	"\x0fsource_snapshot\x18\t \x01(\v2!.ateapi.ActorSourceSnapshotStatusR\x0esourceSnapshot\x12D\n" +
+	"\x10last_resume_time\x18\n" +
+	" \x01(\v2\x1a.google.protobuf.TimestampR\x0elastResumeTime\"m\n" +
 	"\x19ActorSourceSnapshotStatus\x12-\n" +
 	"\bsnapshot\x18\x01 \x01(\v2\x11.ateapi.ObjectRefR\bsnapshot\x12!\n" +
 	"\fsnapshot_uid\x18\x02 \x01(\tR\vsnapshotUid\"\xc7\x01\n" +
@@ -5332,136 +5343,137 @@ var file_ateapi_proto_depIdxs = []int32{
 	9,   // 14: ateapi.ActorStatus.local_snapshot_info:type_name -> ateapi.LocalSnapshotInfo
 	12,  // 15: ateapi.ActorStatus.actor_volumes:type_name -> ateapi.ExternalVolume
 	15,  // 16: ateapi.ActorStatus.source_snapshot:type_name -> ateapi.ActorSourceSnapshotStatus
-	21,  // 17: ateapi.ActorSourceSnapshotStatus.snapshot:type_name -> ateapi.ObjectRef
-	11,  // 18: ateapi.ActorSnapshot.metadata:type_name -> ateapi.ResourceMetadata
-	18,  // 19: ateapi.ActorSnapshot.status:type_name -> ateapi.ActorSnapshotStatus
-	21,  // 20: ateapi.ActorSnapshotStatus.source_actor:type_name -> ateapi.ObjectRef
-	0,   // 21: ateapi.ActorSnapshotStatus.content_scope:type_name -> ateapi.SnapshotContentScope
-	21,  // 22: ateapi.ActorSnapshotStatus.actor_template:type_name -> ateapi.ObjectRef
-	11,  // 23: ateapi.ActorSnapshotTag.metadata:type_name -> ateapi.ResourceMetadata
-	21,  // 24: ateapi.ActorSnapshotTag.snapshot:type_name -> ateapi.ObjectRef
-	1,   // 25: ateapi.ActorSnapshotTag.scope:type_name -> ateapi.ActorSnapshotTagScope
-	11,  // 26: ateapi.Atespace.metadata:type_name -> ateapi.ResourceMetadata
-	11,  // 27: ateapi.ActorTemplate.metadata:type_name -> ateapi.ResourceMetadata
-	10,  // 28: ateapi.ActorTemplate.worker_selector:type_name -> ateapi.Selector
-	29,  // 29: ateapi.ActorTemplate.containers:type_name -> ateapi.Container
-	33,  // 30: ateapi.ActorTemplate.volumes:type_name -> ateapi.Volume
-	27,  // 31: ateapi.ActorTemplate.snapshots_config:type_name -> ateapi.SnapshotsConfig
-	26,  // 32: ateapi.ActorTemplate.sandbox_config:type_name -> ateapi.SandboxConfig
-	23,  // 33: ateapi.ActorTemplate.resources:type_name -> ateapi.Resources
-	25,  // 34: ateapi.ActorTemplate.status:type_name -> ateapi.ActorTemplateStatus
-	24,  // 35: ateapi.Resources.limits:type_name -> ateapi.Limits
-	4,   // 36: ateapi.ActorTemplateStatus.phase:type_name -> ateapi.ActorTemplatePhase
-	21,  // 37: ateapi.ActorTemplateStatus.golden_snapshot:type_name -> ateapi.ObjectRef
-	37,  // 38: ateapi.ActorTemplateStatus.sandbox_assets:type_name -> ateapi.SandboxAssets
-	3,   // 39: ateapi.SandboxConfig.sandbox_class:type_name -> ateapi.SandboxClass
-	0,   // 40: ateapi.SnapshotsConfig.on_pause:type_name -> ateapi.SnapshotContentScope
-	0,   // 41: ateapi.SnapshotsConfig.on_commit:type_name -> ateapi.SnapshotContentScope
-	28,  // 42: ateapi.SnapshotsConfig.on_resume:type_name -> ateapi.OnResumeConfig
-	5,   // 43: ateapi.OnResumeConfig.from_data:type_name -> ateapi.ResumeSource
-	30,  // 44: ateapi.Container.env:type_name -> ateapi.EnvVar
-	31,  // 45: ateapi.Container.readyz:type_name -> ateapi.ContainerReadyz
-	36,  // 46: ateapi.Container.volume_mounts:type_name -> ateapi.VolumeMount
-	32,  // 47: ateapi.ContainerReadyz.http_get:type_name -> ateapi.HTTPGetAction
-	34,  // 48: ateapi.Volume.durable_dir:type_name -> ateapi.DurableDirVolumeSource
-	35,  // 49: ateapi.Volume.external_volume_template:type_name -> ateapi.ExternalVolumeTemplate
-	3,   // 50: ateapi.SandboxAssets.sandbox_class:type_name -> ateapi.SandboxClass
-	83,  // 51: ateapi.SandboxAssets.assets:type_name -> ateapi.SandboxAssets.AssetsEntry
-	84,  // 52: ateapi.ArchAssets.files:type_name -> ateapi.ArchAssets.FilesEntry
-	20,  // 53: ateapi.CreateAtespaceRequest.atespace:type_name -> ateapi.Atespace
-	21,  // 54: ateapi.GetAtespaceRequest.atespace:type_name -> ateapi.ObjectRef
-	20,  // 55: ateapi.ListAtespacesResponse.atespaces:type_name -> ateapi.Atespace
-	21,  // 56: ateapi.DeleteAtespaceRequest.atespace:type_name -> ateapi.ObjectRef
-	22,  // 57: ateapi.CreateActorTemplateRequest.actor_template:type_name -> ateapi.ActorTemplate
-	21,  // 58: ateapi.GetActorTemplateRequest.actor_template:type_name -> ateapi.ObjectRef
-	22,  // 59: ateapi.ListActorTemplatesResponse.actor_templates:type_name -> ateapi.ActorTemplate
-	21,  // 60: ateapi.DeleteActorTemplateRequest.actor_template:type_name -> ateapi.ObjectRef
-	21,  // 61: ateapi.GetActorRequest.actor:type_name -> ateapi.ObjectRef
-	13,  // 62: ateapi.CreateActorRequest.actor:type_name -> ateapi.Actor
-	13,  // 63: ateapi.UpdateActorRequest.actor:type_name -> ateapi.Actor
-	87,  // 64: ateapi.UpdateActorRequest.update_mask:type_name -> google.protobuf.FieldMask
-	21,  // 65: ateapi.SuspendActorRequest.actor:type_name -> ateapi.ObjectRef
-	13,  // 66: ateapi.SuspendActorResponse.actor:type_name -> ateapi.Actor
-	21,  // 67: ateapi.PauseActorRequest.actor:type_name -> ateapi.ObjectRef
-	13,  // 68: ateapi.PauseActorResponse.actor:type_name -> ateapi.Actor
-	21,  // 69: ateapi.ResumeActorRequest.actor:type_name -> ateapi.ObjectRef
-	13,  // 70: ateapi.ResumeActorResponse.actor:type_name -> ateapi.Actor
-	21,  // 71: ateapi.DeleteActorRequest.actor:type_name -> ateapi.ObjectRef
-	21,  // 72: ateapi.GetActorSnapshotRequest.snapshot:type_name -> ateapi.ObjectRef
-	21,  // 73: ateapi.GetActorSnapshotTagRequest.tag:type_name -> ateapi.ObjectRef
-	17,  // 74: ateapi.ListActorSnapshotsResponse.snapshots:type_name -> ateapi.ActorSnapshot
-	19,  // 75: ateapi.CreateActorSnapshotTagRequest.actor_snapshot_tag:type_name -> ateapi.ActorSnapshotTag
-	19,  // 76: ateapi.UpdateActorSnapshotTagRequest.tag:type_name -> ateapi.ActorSnapshotTag
-	87,  // 77: ateapi.UpdateActorSnapshotTagRequest.update_mask:type_name -> google.protobuf.FieldMask
-	21,  // 78: ateapi.DeleteActorSnapshotTagRequest.tag:type_name -> ateapi.ObjectRef
-	71,  // 79: ateapi.ListWorkersResponse.workers:type_name -> ateapi.Worker
-	13,  // 80: ateapi.ListActorsResponse.actors:type_name -> ateapi.Actor
-	73,  // 81: ateapi.Worker.assignment:type_name -> ateapi.Assignment
-	85,  // 82: ateapi.Worker.labels:type_name -> ateapi.Worker.LabelsEntry
-	8,   // 83: ateapi.Worker.state:type_name -> ateapi.Worker.State
-	72,  // 84: ateapi.Worker.capacity:type_name -> ateapi.WorkerCapacity
-	74,  // 85: ateapi.Assignment.actor_template:type_name -> ateapi.KubeNamespacedObjectRef
-	21,  // 86: ateapi.Assignment.actor:type_name -> ateapi.ObjectRef
-	6,   // 87: ateapi.MintCertRequest.purpose:type_name -> ateapi.ActorCertificatePurpose
-	38,  // 88: ateapi.SandboxAssets.AssetsEntry.value:type_name -> ateapi.ArchAssets
-	39,  // 89: ateapi.ArchAssets.FilesEntry.value:type_name -> ateapi.AssetFile
-	50,  // 90: ateapi.Control.GetActor:input_type -> ateapi.GetActorRequest
-	51,  // 91: ateapi.Control.CreateActor:input_type -> ateapi.CreateActorRequest
-	52,  // 92: ateapi.Control.UpdateActor:input_type -> ateapi.UpdateActorRequest
-	53,  // 93: ateapi.Control.SuspendActor:input_type -> ateapi.SuspendActorRequest
-	55,  // 94: ateapi.Control.PauseActor:input_type -> ateapi.PauseActorRequest
-	57,  // 95: ateapi.Control.ResumeActor:input_type -> ateapi.ResumeActorRequest
-	59,  // 96: ateapi.Control.DeleteActor:input_type -> ateapi.DeleteActorRequest
-	60,  // 97: ateapi.Control.GetActorSnapshot:input_type -> ateapi.GetActorSnapshotRequest
-	61,  // 98: ateapi.Control.GetActorSnapshotTag:input_type -> ateapi.GetActorSnapshotTagRequest
-	62,  // 99: ateapi.Control.ListActorSnapshots:input_type -> ateapi.ListActorSnapshotsRequest
-	64,  // 100: ateapi.Control.CreateActorSnapshotTag:input_type -> ateapi.CreateActorSnapshotTagRequest
-	65,  // 101: ateapi.Control.UpdateActorSnapshotTag:input_type -> ateapi.UpdateActorSnapshotTagRequest
-	66,  // 102: ateapi.Control.DeleteActorSnapshotTag:input_type -> ateapi.DeleteActorSnapshotTagRequest
-	67,  // 103: ateapi.Control.ListWorkers:input_type -> ateapi.ListWorkersRequest
-	69,  // 104: ateapi.Control.ListActors:input_type -> ateapi.ListActorsRequest
-	40,  // 105: ateapi.Control.CreateAtespace:input_type -> ateapi.CreateAtespaceRequest
-	41,  // 106: ateapi.Control.GetAtespace:input_type -> ateapi.GetAtespaceRequest
-	42,  // 107: ateapi.Control.ListAtespaces:input_type -> ateapi.ListAtespacesRequest
-	44,  // 108: ateapi.Control.DeleteAtespace:input_type -> ateapi.DeleteAtespaceRequest
-	45,  // 109: ateapi.Control.CreateActorTemplate:input_type -> ateapi.CreateActorTemplateRequest
-	46,  // 110: ateapi.Control.GetActorTemplate:input_type -> ateapi.GetActorTemplateRequest
-	47,  // 111: ateapi.Control.ListActorTemplates:input_type -> ateapi.ListActorTemplatesRequest
-	49,  // 112: ateapi.Control.DeleteActorTemplate:input_type -> ateapi.DeleteActorTemplateRequest
-	75,  // 113: ateapi.Debug.DebugClear:input_type -> ateapi.DebugClearRequest
-	77,  // 114: ateapi.ActorIdentity.MintJWT:input_type -> ateapi.MintJWTRequest
-	79,  // 115: ateapi.ActorIdentity.MintCert:input_type -> ateapi.MintCertRequest
-	13,  // 116: ateapi.Control.GetActor:output_type -> ateapi.Actor
-	13,  // 117: ateapi.Control.CreateActor:output_type -> ateapi.Actor
-	13,  // 118: ateapi.Control.UpdateActor:output_type -> ateapi.Actor
-	54,  // 119: ateapi.Control.SuspendActor:output_type -> ateapi.SuspendActorResponse
-	56,  // 120: ateapi.Control.PauseActor:output_type -> ateapi.PauseActorResponse
-	58,  // 121: ateapi.Control.ResumeActor:output_type -> ateapi.ResumeActorResponse
-	13,  // 122: ateapi.Control.DeleteActor:output_type -> ateapi.Actor
-	17,  // 123: ateapi.Control.GetActorSnapshot:output_type -> ateapi.ActorSnapshot
-	19,  // 124: ateapi.Control.GetActorSnapshotTag:output_type -> ateapi.ActorSnapshotTag
-	63,  // 125: ateapi.Control.ListActorSnapshots:output_type -> ateapi.ListActorSnapshotsResponse
-	19,  // 126: ateapi.Control.CreateActorSnapshotTag:output_type -> ateapi.ActorSnapshotTag
-	19,  // 127: ateapi.Control.UpdateActorSnapshotTag:output_type -> ateapi.ActorSnapshotTag
-	19,  // 128: ateapi.Control.DeleteActorSnapshotTag:output_type -> ateapi.ActorSnapshotTag
-	68,  // 129: ateapi.Control.ListWorkers:output_type -> ateapi.ListWorkersResponse
-	70,  // 130: ateapi.Control.ListActors:output_type -> ateapi.ListActorsResponse
-	20,  // 131: ateapi.Control.CreateAtespace:output_type -> ateapi.Atespace
-	20,  // 132: ateapi.Control.GetAtespace:output_type -> ateapi.Atespace
-	43,  // 133: ateapi.Control.ListAtespaces:output_type -> ateapi.ListAtespacesResponse
-	20,  // 134: ateapi.Control.DeleteAtespace:output_type -> ateapi.Atespace
-	22,  // 135: ateapi.Control.CreateActorTemplate:output_type -> ateapi.ActorTemplate
-	22,  // 136: ateapi.Control.GetActorTemplate:output_type -> ateapi.ActorTemplate
-	48,  // 137: ateapi.Control.ListActorTemplates:output_type -> ateapi.ListActorTemplatesResponse
-	22,  // 138: ateapi.Control.DeleteActorTemplate:output_type -> ateapi.ActorTemplate
-	76,  // 139: ateapi.Debug.DebugClear:output_type -> ateapi.DebugClearResponse
-	78,  // 140: ateapi.ActorIdentity.MintJWT:output_type -> ateapi.MintJWTResponse
-	80,  // 141: ateapi.ActorIdentity.MintCert:output_type -> ateapi.MintCertResponse
-	116, // [116:142] is the sub-list for method output_type
-	90,  // [90:116] is the sub-list for method input_type
-	90,  // [90:90] is the sub-list for extension type_name
-	90,  // [90:90] is the sub-list for extension extendee
-	0,   // [0:90] is the sub-list for field type_name
+	86,  // 17: ateapi.ActorStatus.last_resume_time:type_name -> google.protobuf.Timestamp
+	21,  // 18: ateapi.ActorSourceSnapshotStatus.snapshot:type_name -> ateapi.ObjectRef
+	11,  // 19: ateapi.ActorSnapshot.metadata:type_name -> ateapi.ResourceMetadata
+	18,  // 20: ateapi.ActorSnapshot.status:type_name -> ateapi.ActorSnapshotStatus
+	21,  // 21: ateapi.ActorSnapshotStatus.source_actor:type_name -> ateapi.ObjectRef
+	0,   // 22: ateapi.ActorSnapshotStatus.content_scope:type_name -> ateapi.SnapshotContentScope
+	21,  // 23: ateapi.ActorSnapshotStatus.actor_template:type_name -> ateapi.ObjectRef
+	11,  // 24: ateapi.ActorSnapshotTag.metadata:type_name -> ateapi.ResourceMetadata
+	21,  // 25: ateapi.ActorSnapshotTag.snapshot:type_name -> ateapi.ObjectRef
+	1,   // 26: ateapi.ActorSnapshotTag.scope:type_name -> ateapi.ActorSnapshotTagScope
+	11,  // 27: ateapi.Atespace.metadata:type_name -> ateapi.ResourceMetadata
+	11,  // 28: ateapi.ActorTemplate.metadata:type_name -> ateapi.ResourceMetadata
+	10,  // 29: ateapi.ActorTemplate.worker_selector:type_name -> ateapi.Selector
+	29,  // 30: ateapi.ActorTemplate.containers:type_name -> ateapi.Container
+	33,  // 31: ateapi.ActorTemplate.volumes:type_name -> ateapi.Volume
+	27,  // 32: ateapi.ActorTemplate.snapshots_config:type_name -> ateapi.SnapshotsConfig
+	26,  // 33: ateapi.ActorTemplate.sandbox_config:type_name -> ateapi.SandboxConfig
+	23,  // 34: ateapi.ActorTemplate.resources:type_name -> ateapi.Resources
+	25,  // 35: ateapi.ActorTemplate.status:type_name -> ateapi.ActorTemplateStatus
+	24,  // 36: ateapi.Resources.limits:type_name -> ateapi.Limits
+	4,   // 37: ateapi.ActorTemplateStatus.phase:type_name -> ateapi.ActorTemplatePhase
+	21,  // 38: ateapi.ActorTemplateStatus.golden_snapshot:type_name -> ateapi.ObjectRef
+	37,  // 39: ateapi.ActorTemplateStatus.sandbox_assets:type_name -> ateapi.SandboxAssets
+	3,   // 40: ateapi.SandboxConfig.sandbox_class:type_name -> ateapi.SandboxClass
+	0,   // 41: ateapi.SnapshotsConfig.on_pause:type_name -> ateapi.SnapshotContentScope
+	0,   // 42: ateapi.SnapshotsConfig.on_commit:type_name -> ateapi.SnapshotContentScope
+	28,  // 43: ateapi.SnapshotsConfig.on_resume:type_name -> ateapi.OnResumeConfig
+	5,   // 44: ateapi.OnResumeConfig.from_data:type_name -> ateapi.ResumeSource
+	30,  // 45: ateapi.Container.env:type_name -> ateapi.EnvVar
+	31,  // 46: ateapi.Container.readyz:type_name -> ateapi.ContainerReadyz
+	36,  // 47: ateapi.Container.volume_mounts:type_name -> ateapi.VolumeMount
+	32,  // 48: ateapi.ContainerReadyz.http_get:type_name -> ateapi.HTTPGetAction
+	34,  // 49: ateapi.Volume.durable_dir:type_name -> ateapi.DurableDirVolumeSource
+	35,  // 50: ateapi.Volume.external_volume_template:type_name -> ateapi.ExternalVolumeTemplate
+	3,   // 51: ateapi.SandboxAssets.sandbox_class:type_name -> ateapi.SandboxClass
+	83,  // 52: ateapi.SandboxAssets.assets:type_name -> ateapi.SandboxAssets.AssetsEntry
+	84,  // 53: ateapi.ArchAssets.files:type_name -> ateapi.ArchAssets.FilesEntry
+	20,  // 54: ateapi.CreateAtespaceRequest.atespace:type_name -> ateapi.Atespace
+	21,  // 55: ateapi.GetAtespaceRequest.atespace:type_name -> ateapi.ObjectRef
+	20,  // 56: ateapi.ListAtespacesResponse.atespaces:type_name -> ateapi.Atespace
+	21,  // 57: ateapi.DeleteAtespaceRequest.atespace:type_name -> ateapi.ObjectRef
+	22,  // 58: ateapi.CreateActorTemplateRequest.actor_template:type_name -> ateapi.ActorTemplate
+	21,  // 59: ateapi.GetActorTemplateRequest.actor_template:type_name -> ateapi.ObjectRef
+	22,  // 60: ateapi.ListActorTemplatesResponse.actor_templates:type_name -> ateapi.ActorTemplate
+	21,  // 61: ateapi.DeleteActorTemplateRequest.actor_template:type_name -> ateapi.ObjectRef
+	21,  // 62: ateapi.GetActorRequest.actor:type_name -> ateapi.ObjectRef
+	13,  // 63: ateapi.CreateActorRequest.actor:type_name -> ateapi.Actor
+	13,  // 64: ateapi.UpdateActorRequest.actor:type_name -> ateapi.Actor
+	87,  // 65: ateapi.UpdateActorRequest.update_mask:type_name -> google.protobuf.FieldMask
+	21,  // 66: ateapi.SuspendActorRequest.actor:type_name -> ateapi.ObjectRef
+	13,  // 67: ateapi.SuspendActorResponse.actor:type_name -> ateapi.Actor
+	21,  // 68: ateapi.PauseActorRequest.actor:type_name -> ateapi.ObjectRef
+	13,  // 69: ateapi.PauseActorResponse.actor:type_name -> ateapi.Actor
+	21,  // 70: ateapi.ResumeActorRequest.actor:type_name -> ateapi.ObjectRef
+	13,  // 71: ateapi.ResumeActorResponse.actor:type_name -> ateapi.Actor
+	21,  // 72: ateapi.DeleteActorRequest.actor:type_name -> ateapi.ObjectRef
+	21,  // 73: ateapi.GetActorSnapshotRequest.snapshot:type_name -> ateapi.ObjectRef
+	21,  // 74: ateapi.GetActorSnapshotTagRequest.tag:type_name -> ateapi.ObjectRef
+	17,  // 75: ateapi.ListActorSnapshotsResponse.snapshots:type_name -> ateapi.ActorSnapshot
+	19,  // 76: ateapi.CreateActorSnapshotTagRequest.actor_snapshot_tag:type_name -> ateapi.ActorSnapshotTag
+	19,  // 77: ateapi.UpdateActorSnapshotTagRequest.tag:type_name -> ateapi.ActorSnapshotTag
+	87,  // 78: ateapi.UpdateActorSnapshotTagRequest.update_mask:type_name -> google.protobuf.FieldMask
+	21,  // 79: ateapi.DeleteActorSnapshotTagRequest.tag:type_name -> ateapi.ObjectRef
+	71,  // 80: ateapi.ListWorkersResponse.workers:type_name -> ateapi.Worker
+	13,  // 81: ateapi.ListActorsResponse.actors:type_name -> ateapi.Actor
+	73,  // 82: ateapi.Worker.assignment:type_name -> ateapi.Assignment
+	85,  // 83: ateapi.Worker.labels:type_name -> ateapi.Worker.LabelsEntry
+	8,   // 84: ateapi.Worker.state:type_name -> ateapi.Worker.State
+	72,  // 85: ateapi.Worker.capacity:type_name -> ateapi.WorkerCapacity
+	74,  // 86: ateapi.Assignment.actor_template:type_name -> ateapi.KubeNamespacedObjectRef
+	21,  // 87: ateapi.Assignment.actor:type_name -> ateapi.ObjectRef
+	6,   // 88: ateapi.MintCertRequest.purpose:type_name -> ateapi.ActorCertificatePurpose
+	38,  // 89: ateapi.SandboxAssets.AssetsEntry.value:type_name -> ateapi.ArchAssets
+	39,  // 90: ateapi.ArchAssets.FilesEntry.value:type_name -> ateapi.AssetFile
+	50,  // 91: ateapi.Control.GetActor:input_type -> ateapi.GetActorRequest
+	51,  // 92: ateapi.Control.CreateActor:input_type -> ateapi.CreateActorRequest
+	52,  // 93: ateapi.Control.UpdateActor:input_type -> ateapi.UpdateActorRequest
+	53,  // 94: ateapi.Control.SuspendActor:input_type -> ateapi.SuspendActorRequest
+	55,  // 95: ateapi.Control.PauseActor:input_type -> ateapi.PauseActorRequest
+	57,  // 96: ateapi.Control.ResumeActor:input_type -> ateapi.ResumeActorRequest
+	59,  // 97: ateapi.Control.DeleteActor:input_type -> ateapi.DeleteActorRequest
+	60,  // 98: ateapi.Control.GetActorSnapshot:input_type -> ateapi.GetActorSnapshotRequest
+	61,  // 99: ateapi.Control.GetActorSnapshotTag:input_type -> ateapi.GetActorSnapshotTagRequest
+	62,  // 100: ateapi.Control.ListActorSnapshots:input_type -> ateapi.ListActorSnapshotsRequest
+	64,  // 101: ateapi.Control.CreateActorSnapshotTag:input_type -> ateapi.CreateActorSnapshotTagRequest
+	65,  // 102: ateapi.Control.UpdateActorSnapshotTag:input_type -> ateapi.UpdateActorSnapshotTagRequest
+	66,  // 103: ateapi.Control.DeleteActorSnapshotTag:input_type -> ateapi.DeleteActorSnapshotTagRequest
+	67,  // 104: ateapi.Control.ListWorkers:input_type -> ateapi.ListWorkersRequest
+	69,  // 105: ateapi.Control.ListActors:input_type -> ateapi.ListActorsRequest
+	40,  // 106: ateapi.Control.CreateAtespace:input_type -> ateapi.CreateAtespaceRequest
+	41,  // 107: ateapi.Control.GetAtespace:input_type -> ateapi.GetAtespaceRequest
+	42,  // 108: ateapi.Control.ListAtespaces:input_type -> ateapi.ListAtespacesRequest
+	44,  // 109: ateapi.Control.DeleteAtespace:input_type -> ateapi.DeleteAtespaceRequest
+	45,  // 110: ateapi.Control.CreateActorTemplate:input_type -> ateapi.CreateActorTemplateRequest
+	46,  // 111: ateapi.Control.GetActorTemplate:input_type -> ateapi.GetActorTemplateRequest
+	47,  // 112: ateapi.Control.ListActorTemplates:input_type -> ateapi.ListActorTemplatesRequest
+	49,  // 113: ateapi.Control.DeleteActorTemplate:input_type -> ateapi.DeleteActorTemplateRequest
+	75,  // 114: ateapi.Debug.DebugClear:input_type -> ateapi.DebugClearRequest
+	77,  // 115: ateapi.ActorIdentity.MintJWT:input_type -> ateapi.MintJWTRequest
+	79,  // 116: ateapi.ActorIdentity.MintCert:input_type -> ateapi.MintCertRequest
+	13,  // 117: ateapi.Control.GetActor:output_type -> ateapi.Actor
+	13,  // 118: ateapi.Control.CreateActor:output_type -> ateapi.Actor
+	13,  // 119: ateapi.Control.UpdateActor:output_type -> ateapi.Actor
+	54,  // 120: ateapi.Control.SuspendActor:output_type -> ateapi.SuspendActorResponse
+	56,  // 121: ateapi.Control.PauseActor:output_type -> ateapi.PauseActorResponse
+	58,  // 122: ateapi.Control.ResumeActor:output_type -> ateapi.ResumeActorResponse
+	13,  // 123: ateapi.Control.DeleteActor:output_type -> ateapi.Actor
+	17,  // 124: ateapi.Control.GetActorSnapshot:output_type -> ateapi.ActorSnapshot
+	19,  // 125: ateapi.Control.GetActorSnapshotTag:output_type -> ateapi.ActorSnapshotTag
+	63,  // 126: ateapi.Control.ListActorSnapshots:output_type -> ateapi.ListActorSnapshotsResponse
+	19,  // 127: ateapi.Control.CreateActorSnapshotTag:output_type -> ateapi.ActorSnapshotTag
+	19,  // 128: ateapi.Control.UpdateActorSnapshotTag:output_type -> ateapi.ActorSnapshotTag
+	19,  // 129: ateapi.Control.DeleteActorSnapshotTag:output_type -> ateapi.ActorSnapshotTag
+	68,  // 130: ateapi.Control.ListWorkers:output_type -> ateapi.ListWorkersResponse
+	70,  // 131: ateapi.Control.ListActors:output_type -> ateapi.ListActorsResponse
+	20,  // 132: ateapi.Control.CreateAtespace:output_type -> ateapi.Atespace
+	20,  // 133: ateapi.Control.GetAtespace:output_type -> ateapi.Atespace
+	43,  // 134: ateapi.Control.ListAtespaces:output_type -> ateapi.ListAtespacesResponse
+	20,  // 135: ateapi.Control.DeleteAtespace:output_type -> ateapi.Atespace
+	22,  // 136: ateapi.Control.CreateActorTemplate:output_type -> ateapi.ActorTemplate
+	22,  // 137: ateapi.Control.GetActorTemplate:output_type -> ateapi.ActorTemplate
+	48,  // 138: ateapi.Control.ListActorTemplates:output_type -> ateapi.ListActorTemplatesResponse
+	22,  // 139: ateapi.Control.DeleteActorTemplate:output_type -> ateapi.ActorTemplate
+	76,  // 140: ateapi.Debug.DebugClear:output_type -> ateapi.DebugClearResponse
+	78,  // 141: ateapi.ActorIdentity.MintJWT:output_type -> ateapi.MintJWTResponse
+	80,  // 142: ateapi.ActorIdentity.MintCert:output_type -> ateapi.MintCertResponse
+	117, // [117:143] is the sub-list for method output_type
+	91,  // [91:117] is the sub-list for method input_type
+	91,  // [91:91] is the sub-list for extension type_name
+	91,  // [91:91] is the sub-list for extension extendee
+	0,   // [0:91] is the sub-list for field type_name
 }
 
 func init() { file_ateapi_proto_init() }
diff --git a/pkg/proto/ateapipb/ateapi.proto b/pkg/proto/ateapipb/ateapi.proto
index 433b65c3e..6951994c8 100644
--- a/pkg/proto/ateapipb/ateapi.proto
+++ b/pkg/proto/ateapipb/ateapi.proto
@@ -244,6 +244,9 @@ message ActorStatus {
   // How this Actor was seeded from an ActorSnapshot at CreateActor. Unset if
   // the Actor was not created from a snapshot.
   ActorSourceSnapshotStatus source_snapshot = 9;
+
+  // Time of the most recent transition into ACTOR_STATE_RUNNING.
+  google.protobuf.Timestamp last_resume_time = 10;
 }
 
 // ActorSourceSnapshotStatus records what an Actor's source_snapshot_tag